move browser to webbrowser/

77 files changed, 34235 insertions, 0 deletions

diff --git a/webbrowser/base/content/aboutDialog.css b/webbrowser/base/content/aboutDialog.css
new file mode 100644
index 0000000..d96eba5
--- /dev/null
+++ b/webbrowser/base/content/aboutDialog.css
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#aboutPMDialogContainer {
+  width: 700px;
+  height: 410px;
+}
+
+#aboutVersionBox {
+  font-family: Arial, helvetica;
+  height: 38 px;
+}
+
+#aboutVersion {
+  text-align: center;
+  font-size: 18px;
+  font-weight: bold;
+  margin: 4px;
+}
+
+#distribution,
+#distributionId {
+  text-align: center;
+  font-size: 14px;
+  font-weight: bold;
+  display: none;
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+#aboutTextBox {
+  font-family: Arial, helvetica;
+  font-size: 14px;
+  margin: 5px 20px;
+  padding: 4px 10px 0px;
+  border-radius: 3px;
+  color: black;
+  background-color: rgba(240, 240, 240, .6);
+}
+
+#aboutLinkBox {
+  font-family: Arial, helvetica;
+}
+
+.text-credits {
+  margin: 5px 0px;
+}
+
+.text-center {
+  text-align: center;
+}
+
+.text-link,
+.text-link:focus {
+  margin: 0px;
+  padding: 0px;
+}
+
+.bottom-link,
+.bottom-link:focus {
+  text-align: center;
+  text-decoration: none !important;
+  padding: 4px;
+  border-radius: 3px;
+  color: #244C8A;
+  background-color: rgba(240, 240, 240, .7);
+  margin: 0 40px;
+  transition: background-color 0.5s ease-out;
+}
+
+.bottom-link:hover {
+  background-color: rgba(240, 240, 255, .95);
+}
diff --git a/webbrowser/base/content/aboutDialog.js b/webbrowser/base/content/aboutDialog.js
new file mode 100644
index 0000000..e4e18f2
--- /dev/null
+++ b/webbrowser/base/content/aboutDialog.js
@@ -0,0 +1,62 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Services = object with smart getters for common XPCOM services
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function init(aEvent)
+{
+  if (aEvent.target != document)
+    return;
+
+  try {
+    var distroId = Services.prefs.getCharPref("distribution.id");
+    if (distroId) {
+      var distroVersion = Services.prefs.getCharPref("distribution.version");
+
+      var distroIdField = document.getElementById("distributionId");
+      distroIdField.value = distroId + " - " + distroVersion;
+      distroIdField.style.display = "block";
+
+      try {
+        // This is in its own try catch due to bug 895473 and bug 900925.
+        var distroAbout = Services.prefs.getComplexValue("distribution.about",
+          Components.interfaces.nsISupportsString);
+        var distroField = document.getElementById("distribution");
+        distroField.value = distroAbout;
+        distroField.style.display = "block";
+      }
+      catch (ex) {
+        // Pref is unset
+        Components.utils.reportError(ex);
+      }
+    }
+  }
+  catch (e) {
+    // Pref is unset
+  }
+
+  // Include the build ID if this is an "a#" or "b#" build
+  let version = Services.appinfo.version;
+  if (/[ab]\d+$/.test(version)) {
+    let buildID = Services.appinfo.appBuildID;
+    let buildDate = buildID.slice(0,4) + "-" + buildID.slice(4,6) + "-" + buildID.slice(6,8);
+    document.getElementById("aboutVersion").textContent += " (" + buildDate + ")";
+  }
+
+#ifdef XP_MACOSX
+  // it may not be sized at this point, and we need its width to calculate its position
+  window.sizeToContent();
+  window.moveTo((screen.availWidth / 2) - (window.outerWidth / 2), screen.availHeight / 5);
+#endif
+
+// get release notes URL from prefs
+  var formatter = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
+                            .getService(Components.interfaces.nsIURLFormatter);
+  var releaseNotesURL = formatter.formatURLPref("app.releaseNotesURL");
+  if (releaseNotesURL != "about:blank") {
+    var relnotes = document.getElementById("releaseNotesURL");
+    relnotes.setAttribute("href", releaseNotesURL);
+  }
+}
diff --git a/webbrowser/base/content/aboutDialog.xul b/webbrowser/base/content/aboutDialog.xul
new file mode 100644
index 0000000..91fa81e
--- /dev/null
+++ b/webbrowser/base/content/aboutDialog.xul
@@ -0,0 +1,86 @@
+<?xml version="1.0"?> <!-- -*- Mode: HTML -*- --> 
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/content/aboutDialog.css" type="text/css"?>
+<?xml-stylesheet href="chrome://branding/content/aboutDialog.css" type="text/css"?>
+
+<!DOCTYPE window [
+<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
+%brandDTD;
+<!ENTITY % aboutDialogDTD SYSTEM "chrome://browser/locale/aboutDialog.dtd" >
+%aboutDialogDTD;
+]>
+
+#ifdef XP_MACOSX
+<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
+#endif
+
+<window xmlns:html="http://www.w3.org/1999/xhtml"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        id="PMaboutDialog"
+        windowtype="Browser:About"
+        onload="init(event);"
+#ifdef XP_MACOSX
+        inwindowmenu="false"
+#else
+        title="&aboutDialog.title;"
+#endif
+        role="dialog"
+        aria-describedby="version distribution distributionId communityDesc contributeDesc trademark"
+        >
+
+  <script type="application/javascript" src="chrome://browser/content/aboutDialog.js"/>
+
+  <vbox id="aboutPMDialogContainer" flex="1">
+    <vbox id="aboutHeaderBox" />
+    <vbox id="aboutVersionBox" flex="3">
+#ifdef HAVE_64BIT_BUILD
+#expand <label id="aboutVersion">Version: __MOZ_APP_VERSION__ (64-bit)</label>
+#else
+#expand <label id="aboutVersion">Version: __MOZ_APP_VERSION__ (32-bit)</label>
+#endif
+        <label id="distribution" class="text-blurb"/>
+        <label id="distributionId" class="text-blurb"/>
+
+    </vbox>
+    <vbox id="aboutTextBox" flex="1">
+        <description class="text-credits text-center">
+#if defined(MOZ_OFFICIAL_BRANDING) || defined(MC_OFFICIAL)
+#ifdef MC_PRIVATE_BUILD
+          This is a private build of Pale Moon. If you did not manually build this copy from source yourself, then please download an official version from the <label class="text-link" href="http://www.palemoon.org/">Pale Moon website</label>.
+#else
+          <label class="text-link" href="http://www.palemoon.org">Pale Moon</label> is released by <label class="text-link" href="http://www.moonchildproductions.info">Moonchild Productions</label>.
+        </description>
+        <description class="text-credits text-center">
+          Special thanks to all our supporters and donors for making this browser possible!
+        </description>
+        <description class="text-credits">
+          If you wish to contribute, please consider helping out by providing support to other users on the <label class="text-link" href="https://forum.palemoon.org/">Pale Moon forum</label>
+          or getting involved in our development by tackling some of the issues found in our GitHub issue tracker.
+#endif
+#else
+          &brandFullName; is released by &vendorShortName;.
+        </description>
+        <description class="text-credits">
+          This is an experimental build of Web Browser.
+#endif
+        </description>    
+    </vbox>
+    <vbox id="aboutLinkBox">
+      <hbox pack="center">
+        <label class="text-link bottom-link" href="about:rights">End-user rights</label>
+        <label class="text-link bottom-link" href="about:license">Licensing information</label>
+        <label class="text-link bottom-link" id="releaseNotesURL">Release notes</label>
+      </hbox>
+      <description id="aboutPMtrademark">&trademarkInfo.part1;</description>
+    </vbox>
+  </vbox>
+  
+  <keyset>
+    <key keycode="VK_ESCAPE" oncommand="window.close();"/>
+  </keyset>
+
+#ifdef XP_MACOSX
+#include browserMountPoints.inc
+#endif
+</window>
diff --git a/webbrowser/base/content/autocomplete.css b/webbrowser/base/content/autocomplete.css
new file mode 100644
index 0000000..960bdc4
--- /dev/null
+++ b/webbrowser/base/content/autocomplete.css
@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+@namespace html url("http://www.w3.org/1999/xhtml");
+
+/* Apply crisp rendering for favicons at exactly 2dppx resolution */
+@media (resolution: 2dppx) {
+  .ac-site-icon {
+    image-rendering: -moz-crisp-edges;
+  }
+}
+
+richlistitem > .ac-title-box > .ac-title > .ac-comment:not([selected]) > html|span.ac-selected-text {
+  display: none;
+}
diff --git a/webbrowser/base/content/autocomplete.xml b/webbrowser/base/content/autocomplete.xml
new file mode 100644
index 0000000..bd09284
--- /dev/null
+++ b/webbrowser/base/content/autocomplete.xml
@@ -0,0 +1,2128 @@
+<?xml version="1.0"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<bindings id="privateAutocompleteBindings"
+          xmlns="http://www.mozilla.org/xbl"
+          xmlns:html="http://www.w3.org/1999/xhtml"
+          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+          xmlns:xbl="http://www.mozilla.org/xbl">
+
+  <binding id="private-autocomplete" role="xul:combobox"
+           extends="chrome://global/content/bindings/textbox.xml#textbox">
+    <resources>
+      <stylesheet src="chrome://browser/content/autocomplete.css"/>
+      <stylesheet src="chrome://browser/skin/autocomplete.css"/>
+    </resources>
+
+    <content sizetopopup="pref">
+      <xul:hbox class="private-autocomplete-textbox-container" flex="1" xbl:inherits="focused">
+        <children includes="image|deck|stack|box">
+          <xul:image class="private-autocomplete-icon" allowevents="true"/>
+        </children>
+
+        <xul:hbox anonid="textbox-input-box" class="textbox-input-box" flex="1" xbl:inherits="tooltiptext=inputtooltiptext">
+          <children/>
+          <html:input anonid="input" class="private-autocomplete-textbox textbox-input"
+                      allowevents="true"
+                      xbl:inherits="tooltiptext=inputtooltiptext,value,type=inputtype,maxlength,disabled,size,readonly,placeholder,tabindex,accesskey,mozactionhint"/>
+        </xul:hbox>
+        <children includes="hbox"/>
+      </xul:hbox>
+
+      <xul:dropmarker anonid="historydropmarker" class="private-autocomplete-history-dropmarker"
+                      allowevents="true"
+                      xbl:inherits="open,enablehistory,parentfocused=focused"/>
+
+      <xul:popupset anonid="popupset" class="private-autocomplete-result-popupset"/>
+
+      <children includes="toolbarbutton"/>
+    </content>
+
+    <implementation implements="nsIAutoCompleteInput, nsIDOMXULMenuListElement">
+      <field name="mController">null</field>
+      <field name="mSearchNames">null</field>
+      <field name="mIgnoreInput">false</field>
+      <field name="mEnterEvent">null</field>
+
+      <field name="_searchBeginHandler">null</field>
+      <field name="_searchCompleteHandler">null</field>
+      <field name="_textEnteredHandler">null</field>
+      <field name="_textRevertedHandler">null</field>
+
+      <constructor><![CDATA[
+        this.mController = Components.classes["@mozilla.org/autocomplete/controller;1"].
+          getService(Components.interfaces.nsIAutoCompleteController);
+
+        this._searchBeginHandler = this.initEventHandler("searchbegin");
+        this._searchCompleteHandler = this.initEventHandler("searchcomplete");
+        this._textEnteredHandler = this.initEventHandler("textentered");
+        this._textRevertedHandler = this.initEventHandler("textreverted");
+
+        // For security reasons delay searches on pasted values.
+        this.inputField.controllers.insertControllerAt(0, this._pasteController);
+      ]]></constructor>
+
+      <destructor><![CDATA[
+        this.inputField.controllers.removeController(this._pasteController);
+      ]]></destructor>
+
+      <!-- =================== nsIAutoCompleteInput =================== -->
+
+      <field name="popup"><![CDATA[
+        // Wrap in a block so that the let statements don't
+        // create properties on 'this' (bug 635252).
+        {
+          let popup = null;
+          let popupId = this.getAttribute("autocompletepopup");
+          if (popupId)
+            popup = document.getElementById(popupId);
+          if (!popup) {
+            popup = document.createElement("panel");
+            popup.setAttribute("type", "autocomplete");
+            popup.setAttribute("noautofocus", "true");
+
+            let popupset = document.getAnonymousElementByAttribute(this, "anonid", "popupset");
+            popupset.appendChild(popup);
+          }
+          popup.mInput = this;
+          popup;
+        }
+      ]]></field>
+
+      <property name="controller" onget="return this.mController;" readonly="true"/>
+
+      <property name="popupOpen"
+                onget="return this.popup.popupOpen;"
+                onset="if (val) this.openPopup(); else this.closePopup();"/>
+
+      <property name="disableAutoComplete"
+                onset="this.setAttribute('disableautocomplete', val); return val;"
+                onget="return this.getAttribute('disableautocomplete') == 'true';"/>
+
+      <property name="completeDefaultIndex"
+                onset="this.setAttribute('completedefaultindex', val); return val;"
+                onget="return this.getAttribute('completedefaultindex') == 'true';"/>
+
+      <property name="completeSelectedIndex"
+                onset="this.setAttribute('completeselectedindex', val); return val;"
+                onget="return this.getAttribute('completeselectedindex') == 'true';"/>
+
+      <property name="forceComplete"
+                onset="this.setAttribute('forcecomplete', val); return val;"
+                onget="return this.getAttribute('forcecomplete') == 'true';"/>
+
+      <property name="minResultsForPopup"
+                onset="this.setAttribute('minresultsforpopup', val); return val;"
+                onget="var m = parseInt(this.getAttribute('minresultsforpopup')); return isNaN(m) ? 1 : m;"/>
+
+      <property name="showCommentColumn"
+                onset="this.setAttribute('showcommentcolumn', val); return val;"
+                onget="return this.getAttribute('showcommentcolumn') == 'true';"/>
+
+      <property name="showImageColumn"
+                onset="this.setAttribute('showimagecolumn', val); return val;"
+                onget="return this.getAttribute('showimagecolumn') == 'true';"/>
+
+      <property name="timeout"
+                onset="this.setAttribute('timeout', val); return val;">
+        <getter><![CDATA[
+          // For security reasons delay searches on pasted values.
+          if (this._valueIsPasted) {
+            let t = parseInt(this.getAttribute('pastetimeout'));
+            return isNaN(t) ? 1000 : t;
+          }
+
+          let t = parseInt(this.getAttribute('timeout'));
+          return isNaN(t) ? 50 : t;
+        ]]></getter>
+      </property>
+
+      <property name="searchParam"
+                onget="return this.getAttribute('autocompletesearchparam') || '';"
+                onset="this.setAttribute('autocompletesearchparam', val); return val;"/>
+
+      <property name="searchCount" readonly="true"
+                onget="this.initSearchNames(); return this.mSearchNames.length;"/>
+
+      <field name="shrinkDelay" readonly="true">
+        parseInt(this.getAttribute("shrinkdelay")) || 0
+      </field>
+
+      <field name="PrivateBrowsingUtils" readonly="true">
+        {
+          let utils = {};
+          Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm", utils);
+          utils.PrivateBrowsingUtils
+        }
+      </field>
+
+      <property name="inPrivateContext" readonly="true"
+                onget="return this.PrivateBrowsingUtils.isWindowPrivate(window);"/>
+
+      <property name="noRollupOnCaretMove" readonly="true"
+                onget="return this.popup.getAttribute('norolluponanchor') == 'true'"/>
+
+      <!-- This is the maximum number of drop-down rows we get when we
+            hit the drop marker beside fields that have it (like the URLbar).-->
+      <field name="maxDropMarkerRows" readonly="true">14</field>
+
+      <method name="getSearchAt">
+        <parameter name="aIndex"/>
+        <body><![CDATA[
+          this.initSearchNames();
+          return this.mSearchNames[aIndex];
+        ]]></body>
+      </method>
+
+      <property name="textValue"
+                onget="return this.value;">
+        <setter><![CDATA[
+          // Completing a result should simulate the user typing the result,
+          // so fire an input event.
+          // Trim popup selected values, but never trim results coming from
+          // autofill.
+          if (this.popup.selectedIndex == -1)
+            this._disableTrim = true;
+          this.value = val;
+          this._disableTrim = false;
+
+          var evt = document.createEvent("UIEvents");
+          evt.initUIEvent("input", true, false, window, 0);
+          this.mIgnoreInput = true;
+          this.dispatchEvent(evt);
+          this.mIgnoreInput = false;
+          return this.value;
+        ]]></setter>
+      </property>
+
+      <method name="selectTextRange">
+        <parameter name="aStartIndex"/>
+        <parameter name="aEndIndex"/>
+        <body><![CDATA[
+          this.inputField.setSelectionRange(aStartIndex, aEndIndex);
+        ]]></body>
+      </method>
+
+      <method name="onSearchBegin">
+        <body><![CDATA[
+          if (this.popup && typeof this.popup.onSearchBegin == "function")
+            this.popup.onSearchBegin();
+          if (this._searchBeginHandler)
+            this._searchBeginHandler();
+        ]]></body>
+      </method>
+
+      <method name="onSearchComplete">
+        <body><![CDATA[
+          if (this.mController.matchCount == 0)
+            this.setAttribute("nomatch", "true");
+          else
+            this.removeAttribute("nomatch");
+
+          if (this.ignoreBlurWhileSearching && !this.focused) {
+            this.handleEnter();
+            this.detachController();
+          }
+
+          if (this._searchCompleteHandler)
+            this._searchCompleteHandler();
+        ]]></body>
+      </method>
+
+      <method name="onTextEntered">
+        <body><![CDATA[
+          let rv = false;
+          if (this._textEnteredHandler)
+            rv = this._textEnteredHandler(this.mEnterEvent);
+          this.mEnterEvent = null;
+          return rv;
+        ]]></body>
+      </method>
+
+      <method name="onTextReverted">
+        <body><![CDATA[
+          if (this._textRevertedHandler)
+            return this._textRevertedHandler();
+          return false;
+        ]]></body>
+      </method>
+
+      <!-- =================== nsIDOMXULMenuListElement =================== -->
+
+      <property name="editable" readonly="true"
+                onget="return true;" />
+
+      <property name="crop"
+                onset="this.setAttribute('crop',val); return val;"
+                onget="return this.getAttribute('crop');"/>
+
+      <property name="open"
+                onget="return this.getAttribute('open') == 'true';">
+        <setter><![CDATA[
+          if (val)
+            this.showHistoryPopup();
+          else
+            this.closePopup();
+        ]]></setter>
+      </property>
+
+      <!-- =================== PUBLIC MEMBERS =================== -->
+
+      <field name="valueIsTyped">false</field>
+      <field name="_disableTrim">false</field>
+      <property name="value">
+        <getter><![CDATA[
+          if (typeof this.onBeforeValueGet == "function") {
+            var result = this.onBeforeValueGet();
+            if (result)
+              return result.value;
+          }
+          return this.inputField.value;
+        ]]></getter>
+        <setter><![CDATA[
+          this.mIgnoreInput = true;
+
+          if (typeof this.onBeforeValueSet == "function")
+            val = this.onBeforeValueSet(val);
+
+          if (typeof this.trimValue == "function" && !this._disableTrim)
+            val = this.trimValue(val);
+
+          this.valueIsTyped = false;
+          this.inputField.value = val;
+
+          if (typeof this.formatValue == "function")
+            this.formatValue();
+
+          this.mIgnoreInput = false;
+          var event = document.createEvent('Events');
+          event.initEvent('ValueChange', true, true);
+          this.inputField.dispatchEvent(event);
+          return val;
+        ]]></setter>
+      </property>
+
+      <property name="focused" readonly="true"
+                onget="return this.getAttribute('focused') == 'true';"/>
+
+      <!-- maximum number of rows to display at a time -->
+      <property name="maxRows"
+                onset="this.setAttribute('maxrows', val); return val;"
+                onget="return parseInt(this.getAttribute('maxrows')) || 0;"/>
+
+      <!-- option to allow scrolling through the list via the tab key, rather than
+           tab moving focus out of the textbox -->
+      <property name="tabScrolling"
+                onset="this.setAttribute('tabscrolling', val); return val;"
+                onget="return this.getAttribute('tabscrolling') == 'true';"/>
+
+      <!-- option to completely ignore any blur events while searches are
+           still going on. -->
+      <property name="ignoreBlurWhileSearching"
+                onset="this.setAttribute('ignoreblurwhilesearching', val); return val;"
+                onget="return this.getAttribute('ignoreblurwhilesearching') == 'true';"/>
+
+      <!-- disable key navigation handling in the popup results -->
+      <property name="disableKeyNavigation"
+                onset="this.setAttribute('disablekeynavigation', val); return val;"
+                onget="return this.getAttribute('disablekeynavigation') == 'true';"/>
+
+      <!-- option to highlight entries that don't have any matches -->
+      <property name="highlightNonMatches"
+                onset="this.setAttribute('highlightnonmatches', val); return val;"
+                onget="return this.getAttribute('highlightnonmatches') == 'true';"/>
+
+      <!-- =================== PRIVATE MEMBERS =================== -->
+
+      <!-- ::::::::::::: autocomplete controller ::::::::::::: -->
+
+      <method name="attachController">
+        <body><![CDATA[
+          this.mController.input = this;
+        ]]></body>
+      </method>
+
+      <method name="detachController">
+        <body><![CDATA[
+          if (this.mController.input == this)
+            this.mController.input = null;
+        ]]></body>
+      </method>
+
+      <!-- ::::::::::::: popup opening ::::::::::::: -->
+
+      <method name="openPopup">
+        <body><![CDATA[
+          if (this.focused)
+            this.popup.openAutocompletePopup(this, this);
+        ]]></body>
+      </method>
+
+      <method name="closePopup">
+        <body><![CDATA[
+          this.popup.closePopup();
+        ]]></body>
+      </method>
+
+      <method name="showHistoryPopup">
+        <body><![CDATA[
+          // history dropmarker pushed state
+          function cleanup(popup) {
+            popup.removeEventListener("popupshowing", onShow, false);
+          }
+          function onShow(event) {
+            var popup = event.target, input = popup.input;
+            cleanup(popup);
+            input.setAttribute("open", "true");
+            function onHide() {
+              input.removeAttribute("open");
+              popup.removeEventListener("popuphiding", onHide, false);
+            }
+            popup.addEventListener("popuphiding", onHide, false);
+          }
+          this.popup.addEventListener("popupshowing", onShow, false);
+          setTimeout(cleanup, 1000, this.popup);
+
+          // Store our "normal" maxRows on the popup, so that it can reset the
+          // value when the popup is hidden.
+          this.popup._normalMaxRows = this.maxRows;
+
+          // Increase our maxRows temporarily, since we want the dropdown to
+          // be bigger in this case. The popup's popupshowing/popuphiding
+          // handlers will take care of resetting this.
+          this.maxRows = this.maxDropMarkerRows;
+
+          // Ensure that we have focus.
+          if (!this.focused)
+            this.focus();
+          this.attachController();
+          this.mController.startSearch("");
+        ]]></body>
+      </method>
+
+      <method name="toggleHistoryPopup">
+        <body><![CDATA[
+          // If this method is called on the same event tick as the popup gets
+          // hidden, do nothing to avoid re-opening the popup when the drop
+          // marker is clicked while the popup is still open.
+          if (!this.popup.isPopupHidingTick && !this.popup.popupOpen)
+            this.showHistoryPopup();
+          else
+            this.closePopup();
+        ]]></body>
+      </method>
+
+      <!-- ::::::::::::: event dispatching ::::::::::::: -->
+
+      <method name="initEventHandler">
+        <parameter name="aEventType"/>
+        <body><![CDATA[
+          let handlerString = this.getAttribute("on" + aEventType);
+          if (handlerString) {
+            return (new Function("eventType", "param", handlerString)).bind(this, aEventType);
+          }
+          return null;
+        ]]></body>
+      </method>
+
+      <!-- ::::::::::::: key handling ::::::::::::: -->
+
+      <field name="_selectionDetails">null</field>
+      <method name="onKeyPress">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          return this.handleKeyPress(aEvent);
+        ]]></body>
+      </method>
+
+      <method name="handleKeyPress">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          if (aEvent.target.localName != "textbox")
+            return true; // Let child buttons of autocomplete take input
+
+          //XXXpch this is so bogus...
+          if (aEvent.defaultPrevented)
+            return false;
+
+          var cancel = false;
+
+          let { AppConstants } =
+              Components.utils.import("resource://gre/modules/AppConstants.jsm", {});
+          // Catch any keys that could potentially move the caret. Ctrl can be
+          // used in combination with these keys on Windows and Linux; and Alt
+          // can be used on OS X, so make sure the unused one isn't used.
+          let metaKey = AppConstants.platform == "macosx" ? aEvent.ctrlKey : aEvent.altKey;
+          if (!this.disableKeyNavigation && !metaKey) {
+            switch (aEvent.keyCode) {
+              case KeyEvent.DOM_VK_LEFT:
+              case KeyEvent.DOM_VK_RIGHT:
+              case KeyEvent.DOM_VK_HOME:
+                cancel = this.mController.handleKeyNavigation(aEvent.keyCode);
+                break;
+            }
+          }
+
+          // Handle keys that are not part of a keyboard shortcut (no Ctrl or Alt)
+          if (!this.disableKeyNavigation && !aEvent.ctrlKey && !aEvent.altKey) {
+            switch (aEvent.keyCode) {
+              case KeyEvent.DOM_VK_TAB:
+                if (this.tabScrolling && this.popup.popupOpen)
+                  cancel = this.mController.handleKeyNavigation(aEvent.shiftKey ?
+                                                                KeyEvent.DOM_VK_UP :
+                                                                KeyEvent.DOM_VK_DOWN);
+                else if (this.forceComplete && this.mController.matchCount >= 1)
+                  this.mController.handleTab();
+                break;
+              case KeyEvent.DOM_VK_UP:
+              case KeyEvent.DOM_VK_DOWN:
+              case KeyEvent.DOM_VK_PAGE_UP:
+              case KeyEvent.DOM_VK_PAGE_DOWN:
+                cancel = this.mController.handleKeyNavigation(aEvent.keyCode);
+                break;
+            }
+          }
+
+          // Handle keys we know aren't part of a shortcut, even with Alt or
+          // Ctrl.
+          switch (aEvent.keyCode) {
+            case KeyEvent.DOM_VK_ESCAPE:
+              cancel = this.mController.handleEscape();
+              break;
+            case KeyEvent.DOM_VK_RETURN:
+              if (AppConstants.platform == "macosx") {
+                // Prevent the default action, since it will beep on Mac
+                if (aEvent.metaKey)
+                  aEvent.preventDefault();
+              }
+              this.mEnterEvent = aEvent;
+              if (this.mController.selection) {
+                this._selectionDetails = {
+                  index: this.mController.selection.currentIndex,
+                  kind: "key"
+                };
+              }
+              cancel = this.handleEnter();
+              break;
+            case KeyEvent.DOM_VK_DELETE:
+              if (AppConstants.platform == "macosx" && !aEvent.shiftKey) {
+                break;
+              }
+              cancel = this.handleDelete();
+              break;
+            case KeyEvent.DOM_VK_BACK_SPACE:
+              if (AppConstants.platform == "macosx" && aEvent.shiftKey) {
+                cancel = this.handleDelete();
+              }
+              break;
+            case KeyEvent.DOM_VK_DOWN:
+            case KeyEvent.DOM_VK_UP:
+              if (aEvent.altKey)
+                this.toggleHistoryPopup();
+              break;
+            case KeyEvent.DOM_VK_F4:
+              if (AppConstants.platform != "macosx") {
+                this.toggleHistoryPopup();
+              }
+              break;
+          }
+
+          if (cancel) {
+            aEvent.stopPropagation();
+            aEvent.preventDefault();
+          }
+
+          return true;
+        ]]></body>
+      </method>
+
+      <method name="handleEnter">
+        <body><![CDATA[
+          return this.mController.handleEnter(false);
+        ]]></body>
+      </method>
+
+      <method name="handleDelete">
+        <body><![CDATA[
+          return this.mController.handleDelete();
+        ]]></body>
+      </method>
+
+      <!-- ::::::::::::: miscellaneous ::::::::::::: -->
+
+      <method name="initSearchNames">
+        <body><![CDATA[
+          if (!this.mSearchNames) {
+            var names = this.getAttribute("autocompletesearch");
+            if (!names)
+              this.mSearchNames = [];
+            else
+              this.mSearchNames = names.split(" ");
+          }
+        ]]></body>
+      </method>
+
+      <method name="_focus">
+        <!-- doesn't reset this.mController -->
+        <body><![CDATA[
+          this._dontBlur = true;
+          this.focus();
+          this._dontBlur = false;
+        ]]></body>
+      </method>
+
+      <method name="resetActionType">
+        <body><![CDATA[
+          if (this.mIgnoreInput)
+            return;
+          this.removeAttribute("actiontype");
+        ]]></body>
+      </method>
+
+      <field name="_valueIsPasted">false</field>
+      <field name="_pasteController"><![CDATA[
+        ({
+          _autocomplete: this,
+          _kGlobalClipboard: Components.interfaces.nsIClipboard.kGlobalClipboard,
+          supportsCommand: aCommand => aCommand == "cmd_paste",
+          doCommand: function(aCommand) {
+            this._autocomplete._valueIsPasted = true;
+            this._autocomplete.editor.paste(this._kGlobalClipboard);
+            this._autocomplete._valueIsPasted = false;
+          },
+          isCommandEnabled: function(aCommand) {
+            return this._autocomplete.editor.isSelectionEditable &&
+                   this._autocomplete.editor.canPaste(this._kGlobalClipboard);
+          },
+          onEvent: function() {}
+        })
+      ]]></field>
+
+      <method name="onInput">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          if (!this.mIgnoreInput && this.mController.input == this) {
+            this.valueIsTyped = true;
+            this.mController.handleText();
+          }
+          this.resetActionType();
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="input"><![CDATA[
+        this.onInput(event);
+      ]]></handler>
+
+      <handler event="keypress" phase="capturing"
+               action="return this.onKeyPress(event);"/>
+
+      <handler event="compositionstart" phase="capturing"
+               action="if (this.mController.input == this) this.mController.handleStartComposition();"/>
+
+      <handler event="compositionend" phase="capturing"
+               action="if (this.mController.input == this) this.mController.handleEndComposition();"/>
+
+      <handler event="focus" phase="capturing"
+               action="this.attachController();"/>
+
+      <handler event="blur" phase="capturing"><![CDATA[
+        if (!this._dontBlur) {
+          if (this.forceComplete && this.mController.matchCount >= 1) {
+            // mousemove sets selected index. Don't blindly use that selected
+            // index in this blur handler since if the popup is open you can
+            // easily "select" another match just by moving the mouse over it.
+            let filledVal = this.value.replace(/.+ >> /, "").toLowerCase();
+            let selectedVal = null;
+            if (this.popup.selectedIndex >= 0) {
+              selectedVal = this.mController.getFinalCompleteValueAt(
+                this.popup.selectedIndex);
+            }
+            if (selectedVal && filledVal != selectedVal.toLowerCase()) {
+              for (let i = 0; i < this.mController.matchCount; i++) {
+                let matchVal = this.mController.getFinalCompleteValueAt(i);
+                if (matchVal.toLowerCase() == filledVal) {
+                  this.popup.selectedIndex = i;
+                  break;
+                }
+              }
+            }
+            this.mController.handleEnter(false);
+          }
+          if (!this.ignoreBlurWhileSearching)
+            this.detachController();
+        }
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <binding id="private-autocomplete-result-popup" extends="chrome://browser/content/autocomplete.xml#private-autocomplete-base-popup">
+    <resources>
+      <stylesheet src="chrome://browser/content/autocomplete.css"/>
+      <stylesheet src="chrome://global/skin/tree.css"/>
+      <stylesheet src="chrome://browser/skin/autocomplete.css"/>
+    </resources>
+
+    <content ignorekeys="true" level="top" consumeoutsideclicks="never">
+      <xul:tree anonid="tree" class="private-autocomplete-tree plain" hidecolumnpicker="true" flex="1" seltype="single">
+        <xul:treecols anonid="treecols">
+          <xul:treecol id="treecolAutoCompleteValue" class="private-autocomplete-treecol" flex="1" overflow="true"/>
+        </xul:treecols>
+        <xul:treechildren class="private-autocomplete-treebody"/>
+      </xul:tree>
+    </content>
+
+    <implementation>
+      <field name="mShowCommentColumn">false</field>
+      <field name="mShowImageColumn">false</field>
+
+      <property name="showCommentColumn"
+                   onget="return this.mShowCommentColumn;">
+        <setter>
+          <![CDATA[
+          if (!val && this.mShowCommentColumn) {
+            // reset the flex on the value column and remove the comment column
+            document.getElementById("treecolAutoCompleteValue").setAttribute("flex", 1);
+            this.removeColumn("treecolAutoCompleteComment");
+          } else if (val && !this.mShowCommentColumn) {
+            // reset the flex on the value column and add the comment column
+            document.getElementById("treecolAutoCompleteValue").setAttribute("flex", 2);
+            this.addColumn({id: "treecolAutoCompleteComment", flex: 1});
+          }
+          this.mShowCommentColumn = val;
+          return val;
+        ]]>
+        </setter>
+      </property>
+
+      <property name="showImageColumn"
+                onget="return this.mShowImageColumn;">
+        <setter>
+          <![CDATA[
+          if (!val && this.mShowImageColumn) {
+            // remove the image column
+            this.removeColumn("treecolAutoCompleteImage");
+          } else if (val && !this.mShowImageColumn) {
+            // add the image column
+            this.addColumn({id: "treecolAutoCompleteImage", flex: 1});
+          }
+          this.mShowImageColumn = val;
+          return val;
+        ]]>
+        </setter>
+      </property>
+
+
+      <method name="addColumn">
+        <parameter name="aAttrs"/>
+        <body>
+          <![CDATA[
+          var col = document.createElement("treecol");
+          col.setAttribute("class", "private-autocomplete-treecol");
+          for (var name in aAttrs)
+            col.setAttribute(name, aAttrs[name]);
+          this.treecols.appendChild(col);
+          return col;
+        ]]>
+        </body>
+      </method>
+
+      <method name="removeColumn">
+        <parameter name="aColId"/>
+        <body>
+          <![CDATA[
+          return this.treecols.removeChild(document.getElementById(aColId));
+        ]]>
+        </body>
+      </method>
+
+      <property name="selectedIndex"
+                onget="return this.tree.currentIndex;">
+        <setter>
+          <![CDATA[
+          this.tree.view.selection.select(val);
+          if (this.tree.treeBoxObject.height > 0)
+            this.tree.treeBoxObject.ensureRowIsVisible(val < 0 ? 0 : val);
+          // Fire select event on xul:tree so that accessibility API
+          // support layer can fire appropriate accessibility events.
+          var event = document.createEvent('Events');
+          event.initEvent("select", true, true);
+          this.tree.dispatchEvent(event);
+          return val;
+        ]]></setter>
+      </property>
+
+      <method name="adjustHeight">
+        <body>
+          <![CDATA[
+          // detect the desired height of the tree
+          var bx = this.tree.treeBoxObject;
+          var view = this.tree.view;
+          if (!view)
+            return;
+          var rows = this.maxRows;
+          if (!view.rowCount || (rows && view.rowCount < rows))
+            rows = view.rowCount;
+
+          var height = rows * bx.rowHeight;
+
+          if (height == 0) {
+            this.tree.setAttribute("collapsed", "true");
+          } else {
+            if (this.tree.hasAttribute("collapsed"))
+              this.tree.removeAttribute("collapsed");
+
+            this.tree.setAttribute("height", height);
+          }
+          this.tree.setAttribute("hidescrollbar", view.rowCount <= rows);
+        ]]>
+        </body>
+      </method>
+
+      <method name="openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body><![CDATA[
+          // until we have "baseBinding", (see bug #373652) this allows
+          // us to override openAutocompletePopup(), but still call
+          // the method on the base class
+          this._openAutocompletePopup(aInput, aElement);
+        ]]></body>
+      </method>
+
+      <method name="_openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body><![CDATA[
+          if (!this.mPopupOpen) {
+            this.mInput = aInput;
+            this.view = aInput.controller.QueryInterface(Components.interfaces.nsITreeView);
+            this.invalidate();
+
+            this.showCommentColumn = this.mInput.showCommentColumn;
+            this.showImageColumn = this.mInput.showImageColumn;
+
+            var rect = aElement.getBoundingClientRect();
+            var nav = aElement.ownerDocument.defaultView.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+                              .getInterface(Components.interfaces.nsIWebNavigation);
+            var docShell = nav.QueryInterface(Components.interfaces.nsIDocShell);
+            var docViewer = docShell.contentViewer;
+            var width = (rect.right - rect.left) * docViewer.fullZoom;
+            this.setAttribute("width", width > 100 ? width : 100);
+
+            // Adjust the direction of the autocomplete popup list based on the textbox direction, bug 649840
+            var popupDirection = aElement.ownerDocument.defaultView.getComputedStyle(aElement).direction;
+            this.style.direction = popupDirection;
+
+            this.openPopup(aElement, "after_start", 0, 0, false, false);
+          }
+        ]]></body>
+      </method>
+
+      <method name="invalidate">
+        <body><![CDATA[
+          this.adjustHeight();
+          this.tree.treeBoxObject.invalidate();
+        ]]></body>
+      </method>
+
+      <method name="selectBy">
+        <parameter name="aReverse"/>
+        <parameter name="aPage"/>
+        <body><![CDATA[
+          try {
+            var amount = aPage ? 5 : 1;
+            this.selectedIndex = this.getNextIndex(aReverse, amount, this.selectedIndex, this.tree.view.rowCount-1);
+            if (this.selectedIndex == -1) {
+              this.input._focus();
+            }
+          } catch (ex) {
+            // do nothing - occasionally timer-related js errors happen here
+            // e.g. "this.selectedIndex has no properties", when you type fast and hit a
+            // navigation key before this popup has opened
+          }
+        ]]></body>
+      </method>
+
+      <!-- =================== PUBLIC MEMBERS =================== -->
+
+      <field name="tree">
+        document.getAnonymousElementByAttribute(this, "anonid", "tree");
+      </field>
+
+      <field name="treecols">
+        document.getAnonymousElementByAttribute(this, "anonid", "treecols");
+      </field>
+
+      <property name="view"
+                onget="return this.mView;">
+        <setter><![CDATA[
+          // We must do this by hand because the tree binding may not be ready yet
+          this.mView = val;
+          this.tree.boxObject.view = val;
+        ]]></setter>
+      </property>
+
+    </implementation>
+  </binding>
+
+  <binding id="private-autocomplete-base-popup" role="none"
+extends="chrome://global/content/bindings/popup.xml#popup">
+    <implementation implements="nsIAutoCompletePopup">
+      <field name="mInput">null</field>
+      <field name="mPopupOpen">false</field>
+      <field name="mIsPopupHidingTick">false</field>
+
+      <!-- =================== nsIAutoCompletePopup =================== -->
+
+      <property name="input" readonly="true"
+                onget="return this.mInput"/>
+
+      <property name="overrideValue" readonly="true"
+                onget="return null;"/>
+
+      <property name="popupOpen" readonly="true"
+                onget="return this.mPopupOpen;"/>
+
+      <property name="isPopupHidingTick" readonly="true"
+                onget="return this.mIsPopupHidingTick;"/>
+
+      <method name="closePopup">
+        <body>
+          <![CDATA[
+          if (this.mPopupOpen) {
+            this.hidePopup();
+            this.removeAttribute("width");
+          }
+        ]]>
+        </body>
+      </method>
+
+      <!-- This is the default number of rows that we give the autocomplete
+           popup when the textbox doesn't have a "maxrows" attribute
+           for us to use. -->
+      <field name="defaultMaxRows" readonly="true">6</field>
+
+      <!-- In some cases (e.g. when the input's dropmarker button is clicked),
+           the input wants to display a popup with more rows. In that case, it
+           should increase its maxRows property and store the "normal" maxRows
+           in this field. When the popup is hidden, we restore the input's
+           maxRows to the value stored in this field.
+
+           This field is set to -1 between uses so that we can tell when it's
+           been set by the input and when we need to set it in the popupshowing
+           handler. -->
+      <field name="_normalMaxRows">-1</field>
+
+      <property name="maxRows" readonly="true">
+        <getter>
+          <![CDATA[
+          return (this.mInput && this.mInput.maxRows) || this.defaultMaxRows;
+        ]]>
+        </getter>
+      </property>
+
+      <method name="getNextIndex">
+        <parameter name="aReverse"/>
+        <parameter name="aAmount"/>
+        <parameter name="aIndex"/>
+        <parameter name="aMaxRow"/>
+        <body><![CDATA[
+          if (aMaxRow < 0)
+            return -1;
+
+          var newIdx = aIndex + (aReverse?-1:1)*aAmount;
+          if (aReverse && aIndex == -1 || newIdx > aMaxRow && aIndex != aMaxRow)
+            newIdx = aMaxRow;
+          else if (!aReverse && aIndex == -1 || newIdx < 0 && aIndex != 0)
+            newIdx = 0;
+
+          if (newIdx < 0 && aIndex == 0 || newIdx > aMaxRow && aIndex == aMaxRow)
+            aIndex = -1;
+          else
+            aIndex = newIdx;
+
+          return aIndex;
+        ]]></body>
+      </method>
+
+      <method name="onPopupClick">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          var controller = this.view.QueryInterface(Components.interfaces.nsIAutoCompleteController);
+          controller.handleEnter(true);
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="popupshowing"><![CDATA[
+        // If normalMaxRows wasn't already set by the input, then set it here
+        // so that we restore the correct number when the popup is hidden.
+
+        // Null-check this.mInput; see bug 1017914
+        if (this._normalMaxRows < 0 && this.mInput) {
+          this._normalMaxRows = this.mInput.maxRows;
+        }
+
+        // Set an attribute for styling the popup based on the input.
+        let inputID = "";
+        if (this.mInput && this.mInput.ownerDocument &&
+            this.mInput.ownerDocument.documentURIObject.schemeIs("chrome")) {
+          inputID = this.mInput.id;
+          // Take care of elements with no id that are inside xbl bindings
+          if (!inputID) {
+            let bindingParent = this.mInput.ownerDocument.getBindingParent(this.mInput);
+            if (bindingParent) {
+              inputID = bindingParent.id;
+            }
+          }
+        }
+        this.setAttribute("autocompleteinput", inputID);
+
+        this.mPopupOpen = true;
+      ]]></handler>
+
+      <handler event="popuphiding"><![CDATA[
+        var isListActive = true;
+        if (this.selectedIndex == -1)
+          isListActive = false;
+        var controller = this.view.QueryInterface(Components.interfaces.nsIAutoCompleteController);
+        controller.stopSearch();
+
+        this.removeAttribute("autocompleteinput");
+        this.mPopupOpen = false;
+
+        // Prevent opening popup from historydropmarker mousedown handler
+        // on the same event tick the popup is hidden by the same mousedown
+        // event.
+        this.mIsPopupHidingTick = true;
+        setTimeout(() => {
+          this.mIsPopupHidingTick = false;
+        }, 0);
+
+        // Reset the maxRows property to the cached "normal" value, and reset
+        // _normalMaxRows so that we can detect whether it was set by the input
+        // when the popupshowing handler runs.
+
+        // Null-check this.mInput; see bug 1017914
+        if (this.mInput)
+          this.mInput.maxRows = this._normalMaxRows;
+        this._normalMaxRows = -1;
+        // If the list was being navigated and then closed, make sure
+        // we fire accessible focus event back to textbox
+
+        // Null-check this.mInput; see bug 1017914
+        if (isListActive && this.mInput) {
+          this.mInput.mIgnoreFocus = true;
+          this.mInput._focus();
+          this.mInput.mIgnoreFocus = false;
+        }
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <binding id="private-autocomplete-rich-result-popup" extends="chrome://browser/content/autocomplete.xml#private-autocomplete-base-popup">
+    <resources>
+      <stylesheet src="chrome://browser/content/autocomplete.css"/>
+      <stylesheet src="chrome://browser/skin/autocomplete.css"/>
+    </resources>
+
+    <content ignorekeys="true" level="top" consumeoutsideclicks="never">
+      <xul:richlistbox anonid="richlistbox" class="private-autocomplete-richlistbox" flex="1"/>
+      <xul:hbox>
+        <children/>
+      </xul:hbox>
+    </content>
+
+    <implementation implements="nsIAutoCompletePopup">
+      <field name="_currentIndex">0</field>
+      <field name="_rowHeight">0</field>
+      <field name="_rlbAnimated">false</field>
+
+      <!-- =================== nsIAutoCompletePopup =================== -->
+
+      <property name="selectedIndex"
+                onget="return this.richlistbox.selectedIndex;">
+        <setter>
+          <![CDATA[
+          this.richlistbox.selectedIndex = val;
+
+          // when clearing the selection (val == -1, so selectedItem will be
+          // null), we want to scroll back to the top.  see bug #406194
+          this.richlistbox.ensureElementIsVisible(
+            this.richlistbox.selectedItem || this.richlistbox.firstChild);
+
+          return val;
+        ]]>
+        </setter>
+      </property>
+
+      <method name="onSearchBegin">
+        <body><![CDATA[
+          this.richlistbox.mouseSelectedIndex = -1;
+        ]]></body>
+      </method>
+
+      <method name="openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body>
+          <![CDATA[
+          // until we have "baseBinding", (see bug #373652) this allows
+          // us to override openAutocompletePopup(), but still call
+          // the method on the base class
+          this._openAutocompletePopup(aInput, aElement);
+        ]]>
+        </body>
+      </method>
+
+      <method name="_openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body>
+          <![CDATA[
+          if (!this.mPopupOpen) {
+            this.mInput = aInput;
+            // clear any previous selection, see bugs 400671 and 488357
+            this.selectedIndex = -1;
+
+            var width = aElement.getBoundingClientRect().width;
+            this.setAttribute("width", width > 100 ? width : 100);
+            // invalidate() depends on the width attribute
+            this._invalidate();
+
+            this.openPopup(aElement, "after_start", 0, 0, false, false);
+          }
+        ]]>
+        </body>
+      </method>
+
+      <method name="invalidate">
+        <parameter name="reason"/>
+        <body>
+          <![CDATA[
+          // Don't bother doing work if we're not even showing
+          if (!this.mPopupOpen)
+            return;
+
+          this._invalidate(reason);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_invalidate">
+        <parameter name="reason"/>
+        <body>
+          <![CDATA[
+          // collapsed if no matches
+          this.richlistbox.collapsed = (this._matchCount == 0);
+
+          // Update the richlistbox height.
+          if (this._adjustHeightTimeout) {
+            clearTimeout(this._adjustHeightTimeout);
+          }
+          if (this._shrinkTimeout) {
+            clearTimeout(this._shrinkTimeout);
+          }
+          this._adjustHeightTimeout = setTimeout(() => this.adjustHeight(), 0);
+
+          this._currentIndex = 0;
+          if (this._appendResultTimeout) {
+            clearTimeout(this._appendResultTimeout);
+          }
+          this._appendCurrentResult(reason);
+        ]]>
+        </body>
+      </method>
+
+      <property name="maxResults" readonly="true">
+        <getter>
+          <![CDATA[
+            // this is how many richlistitems will be kept around
+            // (note, this getter may be overridden)
+            return 20;
+          ]]>
+        </getter>
+      </property>
+
+      <property name="_matchCount" readonly="true">
+        <getter>
+          <![CDATA[
+          return Math.min(this.mInput.controller.matchCount, this.maxResults);
+          ]]>
+        </getter>
+      </property>
+
+      <method name="_collapseUnusedItems">
+        <body>
+          <![CDATA[
+            let existingItemsCount = this.richlistbox.childNodes.length;
+            for (let i = this._matchCount; i < existingItemsCount; ++i) {
+              this.richlistbox.childNodes[i].collapsed = true;
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="adjustHeight">
+        <body>
+          <![CDATA[
+          // Figure out how many rows to show
+          let rows = this.richlistbox.childNodes;
+          let numRows = Math.min(this._matchCount, this.maxRows, rows.length);
+
+          this.removeAttribute("height");
+
+          // Default the height to 0 if we have no rows to show
+          let height = 0;
+          if (numRows) {
+            if (!this._rowHeight) {
+              let firstRowRect = rows[0].getBoundingClientRect();
+              this._rowHeight = firstRowRect.height;
+
+              let transition =
+                window.getComputedStyle(this.richlistbox).transitionProperty;
+              this._rlbAnimated = transition && transition != "none";
+
+              // Set a fixed max-height to avoid flicker when growing the panel.
+              this.richlistbox.style.maxHeight = (this._rowHeight * this.maxRows) + "px";
+            }
+
+            // Calculate the height to have the first row to last row shown
+            height = this._rowHeight * numRows;
+          }
+
+          let animate = this._rlbAnimated &&
+                        this.getAttribute("dontanimate") != "true";
+          let currentHeight = this.richlistbox.getBoundingClientRect().height;
+          if (height > currentHeight) {
+            // Grow immediately.
+            if (animate) {
+              this.richlistbox.removeAttribute("height");
+              this.richlistbox.style.height = height + "px";
+            } else {
+              this.richlistbox.style.removeProperty("height");
+              this.richlistbox.height = height;
+            }
+          } else {
+            // Delay shrinking to avoid flicker.
+            this._shrinkTimeout = setTimeout(() => {
+              this._collapseUnusedItems();
+              if (animate) {
+                this.richlistbox.removeAttribute("height");
+                this.richlistbox.style.height = height + "px";
+              } else {
+                this.richlistbox.style.removeProperty("height");
+                this.richlistbox.height = height;
+              }
+            }, this.mInput.shrinkDelay);
+          }
+          ]]>
+        </body>
+      </method>
+
+      <method name="_appendCurrentResult">
+        <parameter name="invalidateReason"/>
+        <body>
+          <![CDATA[
+          var controller = this.mInput.controller;
+          var matchCount = this._matchCount;
+          var existingItemsCount = this.richlistbox.childNodes.length;
+
+          // Process maxRows per chunk to improve performance and user experience
+          for (let i = 0; i < this.maxRows; i++) {
+            if (this._currentIndex >= matchCount)
+              break;
+
+            var item;
+
+            // trim the leading/trailing whitespace
+            var trimmedSearchString = controller.searchString.replace(/^\s+/, "").replace(/\s+$/, "");
+
+            let url = controller.getValueAt(this._currentIndex);
+
+            if (this._currentIndex < existingItemsCount) {
+              // re-use the existing item
+              item = this.richlistbox.childNodes[this._currentIndex];
+
+              // Completely reuse the existing richlistitem for invalidation
+              // due to new results, but only when: the item is the same, *OR*
+              // we are about to replace the currently mouse-selected item, to
+              // avoid surprising the user.
+              let iface = Components.interfaces.nsIAutoCompletePopup;
+              if (item.getAttribute("text") == trimmedSearchString &&
+                  invalidateReason == iface.INVALIDATE_REASON_NEW_RESULT &&
+                  (item.getAttribute("url") == url ||
+                   this.richlistbox.mouseSelectedIndex === this._currentIndex)) {
+                item.collapsed = false;
+                this._currentIndex++;
+                continue;
+              }
+            }
+            else {
+              // need to create a new item
+              item = document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "richlistitem");
+            }
+
+            // set these attributes before we set the class
+            // so that we can use them from the constructor
+            let iconURI = controller.getImageAt(this._currentIndex);
+            item.setAttribute("image", iconURI);
+            item.setAttribute("url", url);
+            item.setAttribute("title", controller.getCommentAt(this._currentIndex));
+            item.setAttribute("type", controller.getStyleAt(this._currentIndex));
+            item.setAttribute("text", trimmedSearchString);
+
+            if (this._currentIndex < existingItemsCount) {
+              // re-use the existing item
+              item._adjustAcItem();
+              item.collapsed = false;
+            }
+            else {
+              // set the class at the end so we can use the attributes
+              // in the xbl constructor
+              item.className = "private-autocomplete-richlistitem";
+              this.richlistbox.appendChild(item);
+            }
+
+            this._currentIndex++;
+          }
+
+          if (typeof this.onResultsAdded == "function")
+            this.onResultsAdded();
+
+          if (this._currentIndex < matchCount) {
+            // yield after each batch of items so that typing the url bar is
+            // responsive
+            this._appendResultTimeout = setTimeout(() => this._appendCurrentResult(), 0);
+          }
+        ]]>
+        </body>
+      </method>
+
+      <method name="selectBy">
+        <parameter name="aReverse"/>
+        <parameter name="aPage"/>
+        <body>
+          <![CDATA[
+          try {
+            var amount = aPage ? 5 : 1;
+
+            // because we collapsed unused items, we can't use this.richlistbox.getRowCount(), we need to use the matchCount
+            this.selectedIndex = this.getNextIndex(aReverse, amount, this.selectedIndex, this._matchCount - 1);
+            if (this.selectedIndex == -1) {
+              this.input._focus();
+            }
+          } catch (ex) {
+            // do nothing - occasionally timer-related js errors happen here
+            // e.g. "this.selectedIndex has no properties", when you type fast and hit a
+            // navigation key before this popup has opened
+          }
+            ]]>
+        </body>
+      </method>
+
+      <field name="richlistbox">
+        document.getAnonymousElementByAttribute(this, "anonid", "richlistbox");
+      </field>
+
+      <property name="view"
+                onget="return this.mInput.controller;"
+                onset="return val;"/>
+
+    </implementation>
+  </binding>
+
+  <binding id="private-autocomplete-richlistitem" extends="chrome://global/content/bindings/richlistbox.xml#richlistitem">
+    <content>
+      <xul:hbox align="center" class="ac-title-box">
+        <xul:image xbl:inherits="src=image" class="ac-site-icon"/>
+        <xul:hbox anonid="title-box" class="ac-title" flex="1"
+                  onunderflow="_doUnderflow('_title');"
+                  onoverflow="_doOverflow('_title');">
+          <xul:description anonid="title" class="ac-normal-text ac-comment" xbl:inherits="selected"/>
+        </xul:hbox>
+        <xul:label anonid="title-overflow-ellipsis" xbl:inherits="selected"
+                   class="ac-ellipsis-after ac-comment"/>
+        <xul:hbox anonid="extra-box" class="ac-extra" align="center" hidden="true">
+          <xul:image class="ac-result-type-tag"/>
+          <xul:label class="ac-normal-text ac-comment" xbl:inherits="selected" value=":"/>
+          <xul:description anonid="extra" class="ac-normal-text ac-comment" xbl:inherits="selected"/>
+        </xul:hbox>
+        <xul:image anonid="type-image" class="ac-type-icon" xbl:inherits="selected"/>
+      </xul:hbox>
+      <xul:hbox align="center" class="ac-url-box">
+        <xul:spacer class="ac-site-icon"/>
+        <xul:image class="ac-action-icon"/>
+        <xul:hbox anonid="url-box" class="ac-url" flex="1"
+                  onunderflow="_doUnderflow('_url');"
+                  onoverflow="_doOverflow('_url');">
+          <xul:description anonid="url" class="ac-normal-text ac-url-text"
+                           xbl:inherits="selected type"/>
+          <xul:description anonid="action" class="ac-normal-text ac-action-text"
+                           xbl:inherits="selected type"/>
+        </xul:hbox>
+        <xul:label anonid="url-overflow-ellipsis" xbl:inherits="selected"
+                   class="ac-ellipsis-after ac-url-text"/>
+        <xul:spacer class="ac-type-icon"/>
+      </xul:hbox>
+    </content>
+    <implementation implements="nsIDOMXULSelectControlItemElement">
+      <constructor>
+        <![CDATA[
+            let ellipsis = "\u2026";
+            try {
+              ellipsis = Components.classes["@mozilla.org/preferences-service;1"].
+                getService(Components.interfaces.nsIPrefBranch).
+                getComplexValue("intl.ellipsis",
+                  Components.interfaces.nsIPrefLocalizedString).data;
+            } catch (ex) {
+              // Do nothing.. we already have a default
+            }
+
+            this._urlOverflowEllipsis = document.getAnonymousElementByAttribute(this, "anonid", "url-overflow-ellipsis");
+            this._titleOverflowEllipsis = document.getAnonymousElementByAttribute(this, "anonid", "title-overflow-ellipsis");
+
+            this._urlOverflowEllipsis.value = ellipsis;
+            this._titleOverflowEllipsis.value = ellipsis;
+
+            this._typeImage = document.getAnonymousElementByAttribute(this, "anonid", "type-image");
+
+            this._urlBox = document.getAnonymousElementByAttribute(this, "anonid", "url-box");
+            this._url = document.getAnonymousElementByAttribute(this, "anonid", "url");
+            this._action = document.getAnonymousElementByAttribute(this, "anonid", "action");
+
+            this._titleBox = document.getAnonymousElementByAttribute(this, "anonid", "title-box");
+            this._title = document.getAnonymousElementByAttribute(this, "anonid", "title");
+
+            this._extraBox = document.getAnonymousElementByAttribute(this, "anonid", "extra-box");
+            this._extra = document.getAnonymousElementByAttribute(this, "anonid", "extra");
+
+            this._adjustAcItem();
+          ]]>
+      </constructor>
+
+      <property name="label" readonly="true">
+        <getter>
+          <![CDATA[
+            // This property is a string that is read aloud by screen readers,
+            // so it must not contain anything that should not be user-facing.
+
+            let parts = [
+              this.getAttribute("title"),
+              this.getAttribute("displayurl"),
+            ];
+            let label = parts.filter(str => str).join(" ")
+
+            // allow consumers that have extended popups to override
+            // the label values for the richlistitems
+            let panel = this.parentNode.parentNode;
+            if (panel.createResultLabel) {
+              return panel.createResultLabel(this, label);
+            }
+
+            return label;
+          ]]>
+        </getter>
+      </property>
+
+      <property name="_stringBundle">
+        <getter><![CDATA[
+          if (!this.__stringBundle) {
+            this.__stringBundle = Services.strings.createBundle("chrome://global/locale/autocomplete.properties");
+          }
+          return this.__stringBundle;
+        ]]></getter>
+      </property>
+
+      <field name="_boundaryCutoff">null</field>
+
+      <property name="boundaryCutoff" readonly="true">
+        <getter>
+          <![CDATA[
+          if (!this._boundaryCutoff) {
+            this._boundaryCutoff =
+              Components.classes["@mozilla.org/preferences-service;1"].
+              getService(Components.interfaces.nsIPrefBranch).
+              getIntPref("toolkit.autocomplete.richBoundaryCutoff");
+          }
+          return this._boundaryCutoff;
+          ]]>
+        </getter>
+      </property>
+
+      <method name="_getBoundaryIndices">
+        <parameter name="aText"/>
+        <parameter name="aSearchTokens"/>
+        <body>
+          <![CDATA[
+          // Short circuit for empty search ([""] == "")
+          if (aSearchTokens == "")
+            return [0, aText.length];
+
+          // Find which regions of text match the search terms
+          let regions = [];
+          for (let search of Array.prototype.slice.call(aSearchTokens)) {
+            let matchIndex = -1;
+            let searchLen = search.length;
+
+            // Find all matches of the search terms, but stop early for perf
+            let lowerText = aText.substr(0, this.boundaryCutoff).toLowerCase();
+            while ((matchIndex = lowerText.indexOf(search, matchIndex + 1)) >= 0) {
+              regions.push([matchIndex, matchIndex + searchLen]);
+            }
+          }
+
+          // Sort the regions by start position then end position
+          regions = regions.sort((a, b) => {
+            let start = a[0] - b[0];
+            return (start == 0) ? a[1] - b[1] : start;
+          });
+
+          // Generate the boundary indices from each region
+          let start = 0;
+          let end = 0;
+          let boundaries = [];
+          let len = regions.length;
+          for (let i = 0; i < len; i++) {
+            // We have a new boundary if the start of the next is past the end
+            let region = regions[i];
+            if (region[0] > end) {
+              // First index is the beginning of match
+              boundaries.push(start);
+              // Second index is the beginning of non-match
+              boundaries.push(end);
+
+              // Track the new region now that we've stored the previous one
+              start = region[0];
+            }
+
+            // Push back the end index for the current or new region
+            end = Math.max(end, region[1]);
+          }
+
+          // Add the last region
+          boundaries.push(start);
+          boundaries.push(end);
+
+          // Put on the end boundary if necessary
+          if (end < aText.length)
+            boundaries.push(aText.length);
+
+          // Skip the first item because it's always 0
+          return boundaries.slice(1);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_getSearchTokens">
+        <parameter name="aSearch"/>
+        <body>
+          <![CDATA[
+          let search = aSearch.toLowerCase();
+          return search.split(/\s+/);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_setUpDescription">
+        <parameter name="aDescriptionElement"/>
+        <parameter name="aText"/>
+        <parameter name="aNoEmphasis"/>
+        <body>
+          <![CDATA[
+          // Get rid of all previous text
+          while (aDescriptionElement.hasChildNodes())
+            aDescriptionElement.removeChild(aDescriptionElement.firstChild);
+
+          // If aNoEmphasis is specified, don't add any emphasis
+          if (aNoEmphasis) {
+            aDescriptionElement.appendChild(document.createTextNode(aText));
+            return;
+          }
+
+          // Get the indices that separate match and non-match text
+          let search = this.getAttribute("text");
+          let tokens = this._getSearchTokens(search);
+          let indices = this._getBoundaryIndices(aText, tokens);
+
+          let next;
+          let start = 0;
+          let len = indices.length;
+          // Even indexed boundaries are matches, so skip the 0th if it's empty
+          for (let i = indices[0] == 0 ? 1 : 0; i < len; i++) {
+            next = indices[i];
+            let text = aText.substr(start, next - start);
+            start = next;
+
+            if (i % 2 == 0) {
+              // Emphasize the text for even indices
+              let span = aDescriptionElement.appendChild(
+                document.createElementNS("http://www.w3.org/1999/xhtml", "span"));
+              span.className = "ac-emphasize-text";
+              span.textContent = text;
+            } else {
+              // Otherwise, it's plain text
+              aDescriptionElement.appendChild(document.createTextNode(text));
+            }
+          }
+          ]]>
+        </body>
+      </method>
+
+      <!--
+        This will generate an array of emphasis pairs for use with
+        _setUpEmphasisedSections(). Each pair is a tuple (array) that
+        represents a block of text - containing the text of that block, and a
+        boolean for whether that block should have an emphasis styling applied
+        to it.
+
+        These pairs are generated by parsing a localised string (aSourceString)
+        with parameters, in the format that is used by
+        nsIStringBundle.formatStringFromName():
+
+          "textA %1$S textB textC %2$S"
+
+        Or:
+
+          "textA %S"
+
+        Where "%1$S", "%2$S", and "%S" are intended to be replaced by provided
+        replacement strings. These are specified an array of tuples
+        (aReplacements), each containing the replacement text and a boolean for
+        whether that text should have an emphasis styling applied. This is used
+        as a 1-based array - ie, "%1$S" is replaced by the item in the first
+        index of aReplacements, "%2$S" by the second, etc. "%S" will always
+        match the first index.
+      -->
+      <method name="_generateEmphasisPairs">
+        <parameter name="aSourceString"/>
+        <parameter name="aReplacements"/>
+        <body>
+          <![CDATA[
+            let pairs = [];
+
+            // Split on %S, %1$S, %2$S, etc. ie:
+            //   "textA %S"
+            //     becomes ["textA ", "%S"]
+            //   "textA %1$S textB textC %2$S"
+            //     becomes ["textA ", "%1$S", " textB textC ", "%2$S"]
+            let parts = aSourceString.split(/(%(?:[0-9]+\$)?S)/);
+
+            for (let part of parts) {
+              // The above regex will actually give us an empty string at the
+              // end - we don't want that, as we don't want to later generate an
+              // empty text node for it.
+              if (part.length === 0)
+                continue;
+
+              // Determine if this token is a replacement token or a normal text
+              // token. If it is a replacement token, we want to extract the
+              // numerical number. However, we still want to match on "$S".
+              let match = part.match(/^%(?:([0-9]+)\$)?S$/);
+
+              if (match) {
+                // "%S" doesn't have a numerical number in it, but will always
+                // be assumed to be 1. Furthermore, the input string specifies
+                // these with a 1-based index, but we want a 0-based index.
+                let index = (match[1] || 1) - 1;
+
+                if (index >= 0 && index < aReplacements.length) {
+                  pairs.push([...aReplacements[index]]);
+                }
+              } else {
+                pairs.push([part]);
+              }
+            }
+
+            return pairs;
+          ]]>
+        </body>
+      </method>
+
+      <!--
+        _setUpEmphasisedSections() has the same use as _setUpDescription,
+        except instead of taking a string and highlighting given tokens, it takes
+        an array of pairs generated by _generateEmphasisPairs(). This allows
+        control over emphasising based on specific blocks of text, rather than
+        search for substrings.
+      -->
+      <method name="_setUpEmphasisedSections">
+        <parameter name="aDescriptionElement"/>
+        <parameter name="aTextPairs"/>
+        <body>
+          <![CDATA[
+          // Get rid of all previous text
+          while (aDescriptionElement.hasChildNodes())
+            aDescriptionElement.firstChild.remove();
+
+          for (let [text, emphasise] of aTextPairs) {
+            if (emphasise) {
+              let span = aDescriptionElement.appendChild(
+                document.createElementNS("http://www.w3.org/1999/xhtml", "span"));
+              span.textContent = text;
+              switch(emphasise) {
+                case "match":
+                  span.className = "ac-emphasize-text";
+                  break;
+                case "selected":
+                  span.className = "ac-selected-text";
+                  break;
+              }
+            } else {
+              aDescriptionElement.appendChild(document.createTextNode(text));
+            }
+          }
+          ]]>
+        </body>
+      </method>
+
+      <field name="_textToSubURI">null</field>
+      <method name="_unescapeUrl">
+        <parameter name="url"/>
+        <body>
+          <![CDATA[
+          if (!this._textToSubURI) {
+            this._textToSubURI =
+              Components.classes["@mozilla.org/intl/texttosuburi;1"]
+                        .getService(Components.interfaces.nsITextToSubURI);
+          }
+          return this._textToSubURI.unEscapeURIForUI("UTF-8", url);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_adjustAcItem">
+        <body>
+          <![CDATA[
+          let originalUrl = this.getAttribute("url");
+          let title = this.getAttribute("title");
+          let type = this.getAttribute("type");
+
+          let displayUrl;
+          let emphasiseTitle = true;
+          let emphasiseUrl = true;
+
+          // Hide the title's extra box by default, until we find out later if
+          // we need extra stuff.
+          this._extraBox.hidden = true;
+          this._titleBox.flex = 1;
+          this._typeImage.hidden = false;
+
+          this.removeAttribute("actiontype");
+          this.classList.remove("overridable-action");
+
+          // The ellipses are hidden via their visibility so that they always
+          // take up space and don't pop in on top of text when shown.  For
+          // keyword searches, however, the title ellipsis should not take up
+          // space when hidden.  Setting the hidden property accomplishes that.
+          this._titleOverflowEllipsis.hidden = false;
+
+          let types = new Set(type.split(/\s+/));
+
+          // Remove types that should ultimately not be in the `type` string.
+          let initialTypes = new Set(types);
+          types.delete("action");
+          types.delete("autofill");
+          types.delete("heuristic");
+          types.delete("search");
+
+          type = [...types][0] || "";
+
+          // If the type includes an action, set up the item appropriately.
+          if (initialTypes.has("action")) {
+            let action = this._parseActionUrl(originalUrl);
+            this.setAttribute("actiontype", action.type);
+
+            if (action.type == "switchtab") {
+              this.classList.add("overridable-action");
+              displayUrl = this._unescapeUrl(action.params.url);
+              let desc = this._stringBundle.GetStringFromName("switchToTab");
+              this._setUpDescription(this._action, desc, true);
+            } else if (action.type == "remotetab") {
+              displayUrl = this._unescapeUrl(action.params.url);
+              let desc = action.params.deviceName;
+              this._setUpDescription(this._action, desc, true);
+            } else if (action.type == "searchengine") {
+              emphasiseUrl = false;
+
+              // The order here is not localizable, we default to appending
+              // "- Search with Engine" to the search string, to be able to
+              // properly generate emphasis pairs. That said, no localization
+              // changed the order while it was possible, so doesn't look like
+              // there's a strong need for that.
+              let {engineName, searchSuggestion, searchQuery} = action.params;
+              let engineStr = " - " +
+                this._stringBundle.formatStringFromName("searchWithEngine",
+                                                        [engineName], 1);
+
+              // Make the title by generating an array of pairs and its
+              // corresponding interpolation string (e.g., "%1$S") to pass to
+              // _generateEmphasisPairs.
+              let pairs;
+              if (searchSuggestion) {
+                // Check if the search query appears in the suggestion.  It may
+                // not.  If it does, then emphasize the query in the suggestion
+                // and otherwise just include the suggestion without emphasis.
+                let idx = searchSuggestion.indexOf(searchQuery);
+                if (idx >= 0) {
+                  pairs = [
+                    [searchSuggestion.substring(0, idx), ""],
+                    [searchQuery, "match"],
+                    [searchSuggestion.substring(idx + searchQuery.length), ""],
+                  ];
+                } else {
+                  pairs = [
+                    [searchSuggestion, ""],
+                  ];
+                }
+              } else {
+                pairs = [
+                  [searchQuery, ""],
+                ];
+              }
+              pairs.push([engineStr, "selected"]);
+              let interpStr = pairs.map((pair, i) => `%${i + 1}$S`).join("");
+              title = this._generateEmphasisPairs(interpStr, pairs);
+
+              // If this is a default search match, we remove the image so we
+              // can style it ourselves with a generic search icon.
+              // We don't do this when matching an aliased search engine,
+              // because the icon helps with recognising which engine will be
+              // used (when using the default engine, we don't need that
+              // recognition).
+              if (!action.params.alias) {
+                this.removeAttribute("image");
+              }
+            } else if (action.type == "visiturl") {
+              emphasiseUrl = false;
+              displayUrl = this._unescapeUrl(action.params.url);
+              let sourceStr = this._stringBundle.GetStringFromName("visitURL");
+              title = this._generateEmphasisPairs(sourceStr, [
+                                                    [displayUrl, "match"],
+                                                  ]);
+            }
+          }
+
+          // Check if we have a search engine name
+          if (initialTypes.has("search")) {
+            emphasiseUrl = false;
+
+            const TITLE_SEARCH_ENGINE_SEPARATOR = " \u00B7\u2013\u00B7 ";
+
+            let searchEngine = "";
+            [title, searchEngine] = title.split(TITLE_SEARCH_ENGINE_SEPARATOR);
+            displayUrl = this._stringBundle.formatStringFromName("searchWithEngine", [searchEngine], 1);
+          }
+
+          if (!displayUrl) {
+            let input = this.parentNode.parentNode.input;
+            let url = typeof(input.trimValue) == "function" ?
+                      input.trimValue(originalUrl) :
+                      originalUrl;
+            displayUrl = this._unescapeUrl(url);
+          }
+          this.setAttribute("displayurl", displayUrl);
+
+          // Check if we have an auto-fill URL
+          if (initialTypes.has("autofill")) {
+            emphasiseUrl = false;
+
+            let sourceStr = this._stringBundle.GetStringFromName("visitURL");
+            title = this._generateEmphasisPairs(sourceStr, [
+                                                 [displayUrl, "match"],
+                                                ]);
+          }
+
+          // If we have a tag match, show the tags and icon
+          if (type == "tag" || type == "bookmark-tag") {
+            // Configure the extra box for tags display
+            this._extraBox.hidden = false;
+            this._extraBox.childNodes[0].hidden = false;
+            this._extraBox.childNodes[1].hidden = true;
+            this._extraBox.pack = "end";
+            this._titleBox.flex = 1;
+
+            // The title is separated from the tags by an endash
+            let tags;
+            [, title, tags] = title.match(/^(.+) \u2013 (.+)$/);
+
+            // Each tag is split by a comma in an undefined order, so sort it
+            let sortedTags = tags.split(",").sort().join(", ");
+
+            // Emphasize the matching text in the tags
+            this._setUpDescription(this._extra, sortedTags);
+
+            // If we're suggesting bookmarks, then treat tagged matches as
+            // bookmarks for the star.
+            if (type == "bookmark-tag") {
+              type = "bookmark";
+            } else {
+              this._typeImage.hidden = true;
+            }
+          // keyword and favicon type results for search engines
+          // have an extra magnifying glass icon after them
+          } else if (type == "keyword" || (initialTypes.has("search") &&
+              initialTypes.has("favicon"))) {
+            // Configure the extra box for keyword display
+            this._extraBox.hidden = false;
+            this._extraBox.childNodes[0].hidden = true;
+            // The second child node is ":" and it should be hidden for non keyword types
+            this._extraBox.childNodes[1].hidden = type == "keyword" ? false : true;
+            this._extraBox.pack = "start";
+            this._titleBox.flex = 0;
+
+            // Hide the ellipsis so it doesn't take up space.
+            this._titleOverflowEllipsis.hidden = true;
+
+            if (type == "keyword") {
+              // Put the parameters next to the title if we have any
+              let search = this.getAttribute("text");
+              let params = "";
+              let paramsIndex = search.indexOf(" ");
+              if (paramsIndex != -1)
+                params = search.substr(paramsIndex + 1);
+
+              // Emphasize the keyword parameters
+              this._setUpDescription(this._extra, params);
+
+              // Don't emphasize keyword searches in the title or url
+              emphasiseUrl = false;
+              emphasiseTitle = false;
+            } else {
+              // Don't show any description for non keyword types.
+              this._setUpDescription(this._extra, "", true);
+            }
+            // If the result has the type favicon and a known search provider,
+            // customize it the same way as a keyword result.
+            type = "keyword";
+          }
+
+          // Give the image the icon style and a special one for the type
+          this._typeImage.className = "ac-type-icon" +
+            (type ? " ac-result-type-" + type : "");
+
+          // Show the domain as the title if we don't have a title.
+          if (title == "") {
+            title = displayUrl;
+            try {
+              let uri = Services.io.newURI(originalUrl, null, null);
+              // Not all valid URLs have a domain.
+              if (uri.host)
+                title = uri.host;
+            } catch (e) {}
+          }
+
+          // Emphasize the matching search terms for the description
+          if (Array.isArray(title))
+            this._setUpEmphasisedSections(this._title, title);
+          else
+            this._setUpDescription(this._title, title, !emphasiseTitle);
+
+          this._setUpDescription(this._url, displayUrl, !emphasiseUrl);
+
+          // Set up overflow on a timeout because the contents of the box
+          // might not have a width yet even though we just changed them
+          setTimeout(this._setUpOverflow, 0, this._titleBox, this._titleOverflowEllipsis);
+          setTimeout(this._setUpOverflow, 0, this._urlBox, this._urlOverflowEllipsis);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_parseActionUrl">
+        <parameter name="aUrl"/>
+        <body><![CDATA[
+          if (!aUrl.startsWith("moz-action:"))
+            return null;
+
+          // URL is in the format moz-action:ACTION,PARAMS
+          // Where PARAMS is a JSON encoded object.
+          let [, type, params] = aUrl.match(/^moz-action:([^,]+),(.*)$/);
+
+          let action = {
+            type: type,
+          };
+
+          try {
+            action.params = JSON.parse(params);
+            for (let key in action.params) {
+              action.params[key] = decodeURIComponent(action.params[key]);
+            }
+          } catch (e) {
+            // If this failed, we assume that params is not a JSON object, and
+            // is instead just a flat string. This will happen when
+            // UnifiedComplete is disabled - in which case, the param is always
+            // a URL.
+            action.params = {
+              url: params,
+            }
+          }
+
+          return action;
+        ]]></body>
+      </method>
+
+      <method name="_setUpOverflow">
+        <parameter name="aParentBox"/>
+        <parameter name="aEllipsis"/>
+        <body>
+          <![CDATA[
+          // Hide the ellipsis incase there's just enough to not underflow
+          aEllipsis.style.visibility = "hidden";
+
+          // Start with the parent's width and subtract off its children
+          let tooltip = [];
+          let children = aParentBox.childNodes;
+          let widthDiff = aParentBox.boxObject.width;
+
+          for (let i = 0; i < children.length; i++) {
+            // Only consider a child if it actually takes up space
+            let childWidth = children[i].boxObject.width;
+            if (childWidth > 0) {
+              // Subtract a little less to account for subpixel rounding
+              widthDiff -= childWidth - .5;
+
+              // Add to the tooltip if it's not hidden and has text
+              let childText = children[i].textContent;
+              if (childText)
+                tooltip.push(childText);
+            }
+          }
+
+          // If the children take up more space than the parent.. overflow!
+          if (widthDiff < 0) {
+            // Re-show the ellipsis now that we know it's needed
+            aEllipsis.style.visibility = "visible";
+
+            // Separate text components with a ndash --
+            aParentBox.tooltipText = tooltip.join(" \u2013 ");
+          }
+          ]]>
+        </body>
+      </method>
+
+      <method name="_doUnderflow">
+        <parameter name="aName"/>
+        <body>
+          <![CDATA[
+          // Hide the ellipsis right when we know we're underflowing instead of
+          // waiting for the timeout to trigger the _setUpOverflow calculations
+          this[aName + "Box"].tooltipText = "";
+          this[aName + "OverflowEllipsis"].style.visibility = "hidden";
+          ]]>
+        </body>
+      </method>
+
+      <method name="_doOverflow">
+        <parameter name="aName"/>
+        <body>
+          <![CDATA[
+          this._setUpOverflow(this[aName + "Box"],
+                              this[aName + "OverflowEllipsis"]);
+          ]]>
+        </body>
+      </method>
+
+    </implementation>
+  </binding>
+
+  <binding id="private-autocomplete-tree" extends="chrome://global/content/bindings/tree.xml#tree">
+    <content>
+      <children includes="treecols"/>
+      <xul:treerows class="private-autocomplete-treerows tree-rows" xbl:inherits="hidescrollbar" flex="1">
+        <children/>
+      </xul:treerows>
+    </content>
+  </binding>
+
+  <binding id="private-autocomplete-richlistbox" extends="chrome://global/content/bindings/richlistbox.xml#richlistbox">
+    <implementation>
+      <field name="mLastMoveTime">Date.now()</field>
+      <field name="mouseSelectedIndex">-1</field>
+    </implementation>
+    <handlers>
+      <handler event="mouseup">
+        <![CDATA[
+        // don't call onPopupClick for the scrollbar buttons, thumb, slider, etc.
+        let item = event.originalTarget;
+        while (item && item.localName != "richlistitem") {
+          item = item.parentNode;
+        }
+
+        if (!item)
+          return;
+
+        this.parentNode.onPopupClick(event);
+      ]]>
+      </handler>
+
+      <handler event="mousemove">
+        <![CDATA[
+        if (Date.now() - this.mLastMoveTime > 30) {
+         let item = event.target;
+         while (item && item.localName != "richlistitem") {
+           item = item.parentNode;
+         }
+
+         if (!item)
+           return;
+
+         let index = this.getIndexOfItem(item);
+         if (index != this.selectedIndex) {
+            this.mouseSelectedIndex = this.selectedIndex = index;
+         }
+
+         this.mLastMoveTime = Date.now();
+        }
+      ]]>
+      </handler>
+    </handlers>
+  </binding>
+
+  <binding id="private-autocomplete-treebody">
+    <implementation>
+      <field name="mLastMoveTime">Date.now()</field>
+    </implementation>
+
+    <handlers>
+      <handler event="mouseup" action="this.parentNode.parentNode.onPopupClick(event);"/>
+
+      <handler event="mousedown"><![CDATA[
+         var rc = this.parentNode.treeBoxObject.getRowAt(event.clientX, event.clientY);
+         if (rc != this.parentNode.currentIndex)
+            this.parentNode.view.selection.select(rc);
+      ]]></handler>
+
+      <handler event="mousemove"><![CDATA[
+        if (Date.now() - this.mLastMoveTime > 30) {
+         var rc = this.parentNode.treeBoxObject.getRowAt(event.clientX, event.clientY);
+         if (rc != this.parentNode.currentIndex)
+            this.parentNode.view.selection.select(rc);
+         this.mLastMoveTime = Date.now();
+        }
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <binding id="private-autocomplete-treerows">
+    <content>
+      <xul:hbox flex="1" class="tree-bodybox">
+        <children/>
+      </xul:hbox>
+      <xul:scrollbar xbl:inherits="collapsed=hidescrollbar" orient="vertical" class="tree-scrollbar"/>
+    </content>
+  </binding>
+
+  <binding id="private-history-dropmarker" extends="chrome://global/content/bindings/general.xml#dropmarker">
+    <handlers>
+      <handler event="mousedown" button="0"><![CDATA[
+        document.getBindingParent(this).toggleHistoryPopup();
+      ]]></handler>
+    </handlers>
+  </binding>
+
+</bindings>
diff --git a/webbrowser/base/content/autorecovery.js b/webbrowser/base/content/autorecovery.js
new file mode 100644
index 0000000..01a092f
--- /dev/null
+++ b/webbrowser/base/content/autorecovery.js
@@ -0,0 +1,60 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Auto-recovery module.
+ * This module aims to catch fatal browser initialization errors and either
+ * automatically correct likely causes from them, or automatically restarting
+ * the browser in safe mode. This is hooked into the browser's "onload"
+ * event because it can be assumed that at that point, everything must
+ * have been properly initialized already.
+ */
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+
+// Services = object with smart getters for common XPCOM services
+Cu.import("resource://gre/modules/Services.jsm");
+
+var browser_autoRecovery =
+{
+  onLoad: function() {
+  
+    var nsIAS = Ci.nsIAppStartup; // Application startup interface
+    
+    if (typeof gBrowser === "undefined") {
+      // gBrowser should always be defined at this point, but if it is not, then most likely 
+      // it is due to an incompatible or outdated language pack being installed and selected.
+      // In this case, we reset "general.useragent.locale" to try to recover browser startup.
+      if (Services.prefs.prefHasUserValue("general.useragent.locale")) {
+        // Restart automatically in en-US.
+        Services.prefs.clearUserPref("general.useragent.locale");
+        Cc["@mozilla.org/toolkit/app-startup;1"].getService(nsIAS).quit(nsIAS.eRestart | nsIAS.eAttemptQuit);
+      } else if (!Services.appinfo.inSafeMode) {
+        // gBrowser isn't defined, and we're not using a custom locale. Most likely
+        // a user-installed add-on causes issues here, so we restart in Safe Mode.
+        let RISM = Services.prompt.confirm(null, "Error",
+                              "The Browser didn't start properly!\n"+
+                              "This is usually caused by an add-on or misconfiguration.\n\n"+
+                              "Restart in Safe Mode?");
+        if (RISM) {
+          Cc["@mozilla.org/toolkit/app-startup;1"].getService(nsIAS).restartInSafeMode(nsIAS.eRestart | nsIAS.eAttemptQuit);
+        } else {
+          // Force quit application
+          Cc["@mozilla.org/toolkit/app-startup;1"].getService(nsIAS).quit(nsIAS.eForceQuit);
+        }
+      }
+      // Something else caused this issue and we're already in Safe Mode, so we return
+      // without doing anything else, and let normal error handling take place.
+      return;
+    } // gBrowser undefined
+    
+    // Other checks than gBrowser undefined can go here!
+    
+    // Remove our listener, since we don't want this to fire on every load.
+    window.removeEventListener("load", browser_autoRecovery.onLoad, false);
+  }
+};
+
+window.addEventListener("load", browser_autoRecovery.onLoad, false);
diff --git a/webbrowser/base/content/autorecovery.xul b/webbrowser/base/content/autorecovery.xul
new file mode 100644
index 0000000..866bdf2
--- /dev/null
+++ b/webbrowser/base/content/autorecovery.xul
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+
+<overlay
+  id="autorecovery"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<script type="application/x-javascript" src="chrome://browser/content/autorecovery.js"/>
+
+<!-- This is an empty overlay to allow separation of the script into its
+     own context (needed for locale issues preventing browser start) -->
+
+</overlay>
diff --git a/webbrowser/base/content/baseMenuOverlay.xul b/webbrowser/base/content/baseMenuOverlay.xul
new file mode 100644
index 0000000..bccdec2
--- /dev/null
+++ b/webbrowser/base/content/baseMenuOverlay.xul
@@ -0,0 +1,114 @@
+<?xml version="1.0"?>
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<!DOCTYPE overlay [
+<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd">
+%brandDTD;
+<!ENTITY % baseMenuOverlayDTD SYSTEM "chrome://browser/locale/baseMenuOverlay.dtd">
+%baseMenuOverlayDTD;
+]>
+<overlay id="baseMenuOverlay"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<script type="application/javascript" src="chrome://browser/content/utilityOverlay.js"/>
+
+#ifdef XP_MACOSX
+<!-- nsMenuBarX hides these and uses them to build the Application menu.
+     When using Carbon widgets for Mac OS X widgets, some of these are not
+     used as they only apply to Cocoa widget builds. All version of Firefox
+     through Firefox 2 will use Carbon widgets. -->
+    <menupopup id="menu_ToolsPopup">
+        <menuitem id="menu_preferences" label="&preferencesCmdMac.label;" key="key_preferencesCmdMac" oncommand="openPreferences();"/>
+        <menuitem id="menu_mac_services" label="&servicesMenuMac.label;"/>
+        <menuitem id="menu_mac_hide_app" label="&hideThisAppCmdMac.label;" key="key_hideThisAppCmdMac"/>
+        <menuitem id="menu_mac_hide_others" label="&hideOtherAppsCmdMac.label;" key="key_hideOtherAppsCmdMac"/>
+        <menuitem id="menu_mac_show_all" label="&showAllAppsCmdMac.label;"/>
+    </menupopup>
+<!-- Mac window menu -->
+#include ../../../../toolkit/content/macWindowMenu.inc
+#endif
+
+#ifdef XP_WIN
+    <menu id="helpMenu"
+          label="&helpMenuWin.label;"
+          accesskey="&helpMenuWin.accesskey;">
+#else
+    <menu id="helpMenu"
+          label="&helpMenu.label;"
+          accesskey="&helpMenu.accesskey;">
+#endif
+      <menupopup id="menu_HelpPopup" onpopupshowing="buildHelpMenu();">
+        <menuitem id="menu_openHelp"
+                  oncommand="openHelpLink('firefox-help')"
+                  onclick="checkForMiddleClick(this, event);"
+                  label="&productHelp.label;"
+                  accesskey="&productHelp.accesskey;"
+#ifdef XP_MACOSX
+                  key="key_openHelpMac"/>
+#else
+                  />
+#endif
+        <menuitem id="troubleShooting"
+                  accesskey="&helpTroubleshootingInfo.accesskey;"
+                  label="&helpTroubleshootingInfo.label;"
+                  oncommand="openTroubleshootingPage()"
+                  onclick="checkForMiddleClick(this, event);"/>
+        <menuitem id="helpSafeMode"
+                  accesskey="&helpSafeMode.accesskey;"
+                  label="&helpSafeMode.label;"
+                  oncommand="restart(true);"/>
+        <menuseparator/>
+        <menuitem id="releaseNotes"
+                  accesskey="&helpReleaseNotes.accesskey;"
+                  label="&helpReleaseNotes.label;"
+                  oncommand="openReleaseNotes();"
+                  onclick="checkForMiddleClick(this, event);"/>
+        <menuitem id="feedbackPage"
+                  accesskey="&helpFeedbackPage.accesskey;"
+                  label="&helpFeedbackPage.label;"
+                  oncommand="openFeedbackPage()"
+                  onclick="checkForMiddleClick(this, event);"/>
+        <menuseparator id="updatesSeparator"/>
+        <menuitem id="checkForUpdates" class="menuitem-iconic"
+#ifdef MOZ_UPDATER
+                  label="&updateCmd.label;"
+                  oncommand="checkForUpdates();"/>
+#else
+                  hidden="true"/>
+#endif
+        <menuseparator id="aboutSeparator"/>
+        <menuitem id="aboutName"
+                  accesskey="&aboutProduct.accesskey;"
+                  label="&aboutProduct.label;"
+                  oncommand="openAboutDialog();"/>
+      </menupopup>
+    </menu>
+
+    <keyset id="baseMenuKeyset">
+#ifdef XP_MACOSX
+        <key id="key_openHelpMac"
+             oncommand="openHelpLink('firefox-osxkey');"
+             key="&helpMac.commandkey;"
+             modifiers="accel"/>
+<!-- These are used to build the Application menu under Cocoa widgets -->
+        <key id="key_preferencesCmdMac"
+             key="&preferencesCmdMac.commandkey;"
+             modifiers="accel"/>
+        <key id="key_hideThisAppCmdMac"
+             key="&hideThisAppCmdMac.commandkey;"
+             modifiers="accel"/>
+        <key id="key_hideOtherAppsCmdMac"
+             key="&hideOtherAppsCmdMac.commandkey;"
+             modifiers="accel,alt"/>
+#endif
+    </keyset>
+
+    <stringbundleset id="stringbundleset">
+        <stringbundle id="bundle_browser" src="chrome://browser/locale/browser.properties"/>
+        <stringbundle id="bundle_browser_region" src="chrome://browser-region/locale/region.properties"/>
+    </stringbundleset>
+</overlay>
diff --git a/webbrowser/base/content/browser-addons.js b/webbrowser/base/content/browser-addons.js
new file mode 100644
index 0000000..630a0cf
--- /dev/null
+++ b/webbrowser/base/content/browser-addons.js
@@ -0,0 +1,537 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Removes a doorhanger notification if all of the installs it was notifying
+// about have ended in some way.
+function removeNotificationOnEnd(notification, installs) {
+  let count = installs.length;
+
+  function maybeRemove(install) {
+    install.removeListener(this);
+
+    if (--count == 0) {
+      // Check that the notification is still showing
+      let current = PopupNotifications.getNotification(notification.id, notification.browser);
+      if (current === notification)
+        notification.remove();
+    }
+  }
+
+  for (let install of installs) {
+    install.addListener({
+      onDownloadCancelled: maybeRemove,
+      onDownloadFailed: maybeRemove,
+      onInstallFailed: maybeRemove,
+      onInstallEnded: maybeRemove
+    });
+  }
+}
+
+const gXPInstallObserver = {
+  _findChildShell: function (aDocShell, aSoughtShell)
+  {
+    if (aDocShell == aSoughtShell)
+      return aDocShell;
+
+    var node = aDocShell.QueryInterface(Components.interfaces.nsIDocShellTreeItem);
+    for (var i = 0; i < node.childCount; ++i) {
+      var docShell = node.getChildAt(i);
+      docShell = this._findChildShell(docShell, aSoughtShell);
+      if (docShell == aSoughtShell)
+        return docShell;
+    }
+    return null;
+  },
+
+  _getBrowser: function (aDocShell)
+  {
+    for (let browser of gBrowser.browsers) {
+      if (this._findChildShell(browser.docShell, aDocShell))
+        return browser;
+    }
+    return null;
+  },
+
+  observe: function (aSubject, aTopic, aData)
+  {
+    var brandBundle = document.getElementById("bundle_brand");
+    var installInfo = aSubject.QueryInterface(Components.interfaces.amIWebInstallInfo);
+    var browser = installInfo.browser;
+
+    // Make sure the browser is still alive.
+    if (!browser || gBrowser.browsers.indexOf(browser) == -1)
+      return;
+
+    const anchorID = "addons-notification-icon";
+    var messageString, action;
+    var brandShortName = brandBundle.getString("brandShortName");
+
+    var notificationID = aTopic;
+    // Make notifications persist a minimum of 30 seconds
+    var options = {
+      timeout: Date.now() + 30000
+    };
+
+    switch (aTopic) {
+    case "addon-install-disabled":
+      notificationID = "xpinstall-disabled"
+
+      if (gPrefService.prefIsLocked("xpinstall.enabled")) {
+        messageString = gNavigatorBundle.getString("xpinstallDisabledMessageLocked");
+        buttons = [];
+      }
+      else {
+        messageString = gNavigatorBundle.getString("xpinstallDisabledMessage");
+
+        action = {
+          label: gNavigatorBundle.getString("xpinstallDisabledButton"),
+          accessKey: gNavigatorBundle.getString("xpinstallDisabledButton.accesskey"),
+          callback: function editPrefs() {
+            gPrefService.setBoolPref("xpinstall.enabled", true);
+          }
+        };
+      }
+
+      PopupNotifications.show(browser, notificationID, messageString, anchorID,
+                              action, null, options);
+      break;
+    case "addon-install-origin-blocked": {
+      messageString = gNavigatorBundle.getFormattedString("xpinstallPromptWarningOrigin",
+                        [brandShortName]);
+
+      let popup = PopupNotifications.show(browser, notificationID,
+                                          messageString, anchorID,
+                                          null, null, options);
+      removeNotificationOnEnd(popup, installInfo.installs);
+      break; }
+    case "addon-install-blocked":
+      let originatingHost;
+      try {
+        originatingHost = installInfo.originatingURI.host;
+      } catch (ex) {
+        // Need to deal with missing originatingURI and with about:/data: URIs more gracefully,
+        // see bug 1063418 - but for now, bail:
+        return;
+      }
+      messageString = gNavigatorBundle.getFormattedString("xpinstallPromptWarning",
+                        [brandShortName, originatingHost]);
+
+      action = {
+        label: gNavigatorBundle.getString("xpinstallPromptAllowButton"),
+        accessKey: gNavigatorBundle.getString("xpinstallPromptAllowButton.accesskey"),
+        callback: function() {
+          installInfo.install();
+        }
+      };
+
+      let popup = PopupNotifications.show(browser, notificationID, messageString,
+                                          anchorID, action, null, options);
+      removeNotificationOnEnd(popup, installInfo.installs);
+      break;
+    case "addon-install-started":
+      var needsDownload = function needsDownload(aInstall) {
+        return aInstall.state != AddonManager.STATE_DOWNLOADED;
+      }
+      // If all installs have already been downloaded then there is no need to
+      // show the download progress
+      if (!installInfo.installs.some(needsDownload))
+        return;
+      notificationID = "addon-progress";
+      messageString = gNavigatorBundle.getString("addonDownloading");
+      messageString = PluralForm.get(installInfo.installs.length, messageString);
+      options.installs = installInfo.installs;
+      options.contentWindow = browser.contentWindow;
+      options.sourceURI = browser.currentURI;
+      options.eventCallback = function(aEvent) {
+        if (aEvent != "removed")
+          return;
+        options.contentWindow = null;
+        options.sourceURI = null;
+      };
+      PopupNotifications.show(browser, notificationID, messageString, anchorID,
+                              null, null, options);
+      break;
+    case "addon-install-failed":
+      // TODO This isn't terribly ideal for the multiple failure case
+      for (let install of installInfo.installs) {
+        let host = (installInfo.originatingURI instanceof Ci.nsIStandardURL) &&
+                   installInfo.originatingURI.host;
+        if (!host)
+          host = (install.sourceURI instanceof Ci.nsIStandardURL) &&
+                 install.sourceURI.host;
+
+        let error = (host || install.error == 0) ? "addonError" : "addonLocalError";
+        if (install.error != 0)
+          error += install.error;
+        else if (install.addon.jetsdk)
+          error += "JetSDK";
+        else if (install.addon.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED)
+          error += "Blocklisted";
+        else
+          error += "Incompatible";
+
+        messageString = gNavigatorBundle.getString(error);
+        messageString = messageString.replace("#1", install.name);
+        if (host)
+          messageString = messageString.replace("#2", host);
+        messageString = messageString.replace("#3", brandShortName);
+        messageString = messageString.replace("#4", Services.appinfo.version);
+
+        PopupNotifications.show(browser, notificationID, messageString, anchorID,
+                                action, null, options);
+      }
+      break;
+    case "addon-install-complete":
+      var needsRestart = installInfo.installs.some(function(i) {
+        return i.addon.pendingOperations != AddonManager.PENDING_NONE;
+      });
+
+      if (needsRestart) {
+        messageString = gNavigatorBundle.getString("addonsInstalledNeedsRestart");
+        action = {
+          label: gNavigatorBundle.getString("addonInstallRestartButton"),
+          accessKey: gNavigatorBundle.getString("addonInstallRestartButton.accesskey"),
+          callback: function() {
+            Application.restart();
+          }
+        };
+      }
+      else {
+        messageString = gNavigatorBundle.getString("addonsInstalled");
+        action = null;
+      }
+
+      messageString = PluralForm.get(installInfo.installs.length, messageString);
+      messageString = messageString.replace("#1", installInfo.installs[0].name);
+      messageString = messageString.replace("#2", installInfo.installs.length);
+      messageString = messageString.replace("#3", brandShortName);
+
+      // Remove notificaion on dismissal, since it's possible to cancel the
+      // install through the addons manager UI, making the "restart" prompt
+      // irrelevant.
+      options.removeOnDismissal = true;
+
+      PopupNotifications.show(browser, notificationID, messageString, anchorID,
+                              action, null, options);
+      break;
+    }
+  }
+};
+
+/*
+ * When addons are installed/uninstalled, check and see if the number of items
+ * on the add-on bar changed:
+ * - If an add-on was installed, incrementing the count, show the bar.
+ * - If an add-on was uninstalled, and no more items are left, hide the bar.
+ */
+var AddonsMgrListener = {
+  get addonBar() document.getElementById("addon-bar"),
+  get statusBar() document.getElementById("status-bar"),
+  getAddonBarItemCount: function() {
+    // Take into account the contents of the status bar shim for the count.
+    var itemCount = this.statusBar.childNodes.length;
+
+    var defaultOrNoninteractive = this.addonBar.getAttribute("defaultset")
+                                      .split(",")
+                                      .concat(["separator", "spacer", "spring"]);
+    for (let item of this.addonBar.currentSet.split(",")) {
+      if (defaultOrNoninteractive.indexOf(item) == -1)
+        itemCount++;
+    }
+
+    return itemCount;
+  },
+  onInstalling: function(aAddon) {
+    this.lastAddonBarCount = this.getAddonBarItemCount();
+  },
+  onInstalled: function(aAddon) {
+    if (this.getAddonBarItemCount() > this.lastAddonBarCount)
+      setToolbarVisibility(this.addonBar, true);
+  },
+  onUninstalling: function(aAddon) {
+    this.lastAddonBarCount = this.getAddonBarItemCount();
+  },
+  onUninstalled: function(aAddon) {
+    if (this.getAddonBarItemCount() == 0)
+      setToolbarVisibility(this.addonBar, false);
+  },
+  onEnabling: function(aAddon) this.onInstalling(),
+  onEnabled: function(aAddon) this.onInstalled(),
+  onDisabling: function(aAddon) this.onUninstalling(),
+  onDisabled: function(aAddon) this.onUninstalled(),
+};
+
+#ifdef MOZ_PERSONAS
+var LightWeightThemeWebInstaller = {
+  handleEvent: function (event) {
+    switch (event.type) {
+      case "InstallBrowserTheme":
+      case "PreviewBrowserTheme":
+      case "ResetBrowserThemePreview":
+        // ignore requests from background tabs
+        if (event.target.ownerDocument.defaultView.top != content)
+          return;
+    }
+    switch (event.type) {
+      case "InstallBrowserTheme":
+        this._installRequest(event);
+        break;
+      case "PreviewBrowserTheme":
+        this._preview(event);
+        break;
+      case "ResetBrowserThemePreview":
+        this._resetPreview(event);
+        break;
+      case "pagehide":
+      case "TabSelect":
+        this._resetPreview();
+        break;
+    }
+  },
+
+  get _manager () {
+    var temp = {};
+    Cu.import("resource://gre/modules/LightweightThemeManager.jsm", temp);
+    delete this._manager;
+    return this._manager = temp.LightweightThemeManager;
+  },
+
+  _installRequest: function (event) {
+    var node = event.target;
+    var data = this._getThemeFromNode(node);
+    if (!data)
+      return;
+
+    if (this._isAllowed(node)) {
+      this._install(data);
+      return;
+    }
+
+    var allowButtonText =
+      gNavigatorBundle.getString("lwthemeInstallRequest.allowButton");
+    var allowButtonAccesskey =
+      gNavigatorBundle.getString("lwthemeInstallRequest.allowButton.accesskey");
+    var message =
+      gNavigatorBundle.getFormattedString("lwthemeInstallRequest.message",
+                                          [node.ownerDocument.location.host]);
+    var buttons = [{
+      label: allowButtonText,
+      accessKey: allowButtonAccesskey,
+      callback: function () {
+        LightWeightThemeWebInstaller._install(data);
+      }
+    }];
+
+    this._removePreviousNotifications();
+
+    var notificationBox = gBrowser.getNotificationBox();
+    var notificationBar =
+      notificationBox.appendNotification(message, "lwtheme-install-request", "",
+                                         notificationBox.PRIORITY_INFO_MEDIUM,
+                                         buttons);
+    notificationBar.persistence = 1;
+  },
+
+  _install: function (newLWTheme) {
+    var previousLWTheme = this._manager.currentTheme;
+
+    var listener = {
+      onEnabling: function(aAddon, aRequiresRestart) {
+        if (!aRequiresRestart)
+          return;
+
+        let messageString = gNavigatorBundle.getFormattedString("lwthemeNeedsRestart.message",
+          [aAddon.name], 1);
+
+        let action = {
+          label: gNavigatorBundle.getString("lwthemeNeedsRestart.button"),
+          accessKey: gNavigatorBundle.getString("lwthemeNeedsRestart.accesskey"),
+          callback: function () {
+            Application.restart();
+          }
+        };
+
+        let options = {
+          timeout: Date.now() + 30000
+        };
+
+        PopupNotifications.show(gBrowser.selectedBrowser, "addon-theme-change",
+                                messageString, "addons-notification-icon",
+                                action, null, options);
+      },
+
+      onEnabled: function(aAddon) {
+        LightWeightThemeWebInstaller._postInstallNotification(newLWTheme, previousLWTheme);
+      }
+    };
+
+    AddonManager.addAddonListener(listener);
+    this._manager.currentTheme = newLWTheme;
+    AddonManager.removeAddonListener(listener);
+  },
+
+  _postInstallNotification: function (newTheme, previousTheme) {
+    function text(id) {
+      return gNavigatorBundle.getString("lwthemePostInstallNotification." + id);
+    }
+
+    var buttons = [{
+      label: text("undoButton"),
+      accessKey: text("undoButton.accesskey"),
+      callback: function () {
+        LightWeightThemeWebInstaller._manager.forgetUsedTheme(newTheme.id);
+        LightWeightThemeWebInstaller._manager.currentTheme = previousTheme;
+      }
+    }, {
+      label: text("manageButton"),
+      accessKey: text("manageButton.accesskey"),
+      callback: function () {
+        BrowserOpenAddonsMgr("addons://list/theme");
+      }
+    }];
+
+    this._removePreviousNotifications();
+
+    var notificationBox = gBrowser.getNotificationBox();
+    var notificationBar =
+      notificationBox.appendNotification(text("message"),
+                                         "lwtheme-install-notification", "",
+                                         notificationBox.PRIORITY_INFO_MEDIUM,
+                                         buttons);
+    notificationBar.persistence = 1;
+    notificationBar.timeout = Date.now() + 20000; // 20 seconds
+  },
+
+  _removePreviousNotifications: function () {
+    var box = gBrowser.getNotificationBox();
+
+    ["lwtheme-install-request",
+     "lwtheme-install-notification"].forEach(function (value) {
+        var notification = box.getNotificationWithValue(value);
+        if (notification)
+          box.removeNotification(notification);
+      });
+  },
+
+  _previewWindow: null,
+  _preview: function (event) {
+    if (!this._isAllowed(event.target))
+      return;
+
+    var data = this._getThemeFromNode(event.target);
+    if (!data)
+      return;
+
+    this._resetPreview();
+
+    this._previewWindow = event.target.ownerDocument.defaultView;
+    this._previewWindow.addEventListener("pagehide", this, true);
+    gBrowser.tabContainer.addEventListener("TabSelect", this, false);
+
+    this._manager.previewTheme(data);
+  },
+
+  _resetPreview: function (event) {
+    if (!this._previewWindow ||
+        event && !this._isAllowed(event.target))
+      return;
+
+    this._previewWindow.removeEventListener("pagehide", this, true);
+    this._previewWindow = null;
+    gBrowser.tabContainer.removeEventListener("TabSelect", this, false);
+
+    this._manager.resetPreview();
+  },
+
+  _isAllowed: function (node) {
+    var pm = Services.perms;
+
+    var uri = node.ownerDocument.documentURIObject;
+    return pm.testPermission(uri, "install") == pm.ALLOW_ACTION;
+  },
+
+  _getThemeFromNode: function (node) {
+    return this._manager.parseTheme(node.getAttribute("data-browsertheme"),
+                                    node.baseURI);
+  }
+}
+
+/*
+ * Listen for Lightweight Theme styling changes and update the browser's theme accordingly.
+ */
+var LightweightThemeListener = {
+  _modifiedStyles: [],
+
+  init: function () {
+    XPCOMUtils.defineLazyGetter(this, "styleSheet", function() {
+      for (let i = document.styleSheets.length - 1; i >= 0; i--) {
+        let sheet = document.styleSheets[i];
+        if (sheet.href == "chrome://browser/skin/browser-lightweightTheme.css")
+          return sheet;
+      }
+    });
+
+    Services.obs.addObserver(this, "lightweight-theme-styling-update", false);
+    Services.obs.addObserver(this, "lightweight-theme-optimized", false);
+    if (document.documentElement.hasAttribute("lwtheme"))
+      this.updateStyleSheet(document.documentElement.style.backgroundImage);
+  },
+
+  uninit: function () {
+    Services.obs.removeObserver(this, "lightweight-theme-styling-update");
+    Services.obs.removeObserver(this, "lightweight-theme-optimized");
+  },
+
+  /**
+   * Append the headerImage to the background-image property of all rulesets in
+   * browser-lightweightTheme.css.
+   *
+   * @param headerImage - a string containing a CSS image for the lightweight theme header.
+   */
+  updateStyleSheet: function(headerImage) {
+    if (!this.styleSheet)
+      return;
+    this.substituteRules(this.styleSheet.cssRules, headerImage);
+  },
+
+  substituteRules: function(ruleList, headerImage, existingStyleRulesModified = 0) {
+    let styleRulesModified = 0;
+    for (let i = 0; i < ruleList.length; i++) {
+      let rule = ruleList[i];
+      if (rule instanceof Ci.nsIDOMCSSGroupingRule) {
+        // Add the number of modified sub-rules to the modified count
+        styleRulesModified += this.substituteRules(rule.cssRules, headerImage, existingStyleRulesModified + styleRulesModified);
+      } else if (rule instanceof Ci.nsIDOMCSSStyleRule) {
+        if (!rule.style.backgroundImage)
+          continue;
+        let modifiedIndex = existingStyleRulesModified + styleRulesModified;
+        if (!this._modifiedStyles[modifiedIndex])
+          this._modifiedStyles[modifiedIndex] = { backgroundImage: rule.style.backgroundImage };
+
+        rule.style.backgroundImage = this._modifiedStyles[modifiedIndex].backgroundImage + ", " + headerImage;
+        styleRulesModified++;
+      } else {
+        Cu.reportError("Unsupported rule encountered");
+      }
+    }
+    return styleRulesModified;
+  },
+
+  // nsIObserver
+  observe: function (aSubject, aTopic, aData) {
+    if ((aTopic != "lightweight-theme-styling-update" && aTopic != "lightweight-theme-optimized") ||
+          !this.styleSheet)
+      return;
+
+    if (aTopic == "lightweight-theme-optimized" && aSubject != window)
+      return;
+
+    let themeData = JSON.parse(aData);
+    if (!themeData)
+      return;
+    this.updateStyleSheet("url(" + themeData.headerURL + ")");
+  },
+};
+#endif
diff --git a/webbrowser/base/content/browser-appmenu.inc b/webbrowser/base/content/browser-appmenu.inc
new file mode 100644
index 0000000..9d202c9
--- /dev/null
+++ b/webbrowser/base/content/browser-appmenu.inc
@@ -0,0 +1,381 @@
+# -*- Mode: HTML -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<menupopup id="appmenu-popup"
+           onpopupshowing="if (event.target == this) {
+                             updateEditUIVisibility();
+#ifdef MOZ_SERVICES_SYNC
+                             gSyncUI.updateUI();
+#endif
+                             return;
+                           }
+                           updateCharacterEncodingMenuState();
+                           if (event.target.parentNode.parentNode.parentNode.parentNode == this)
+                             this._currentPopup = event.target;">
+  <hbox>
+    <vbox id="appmenuPrimaryPane">
+      <menuitem id="appmenu_newTab_popup"
+                label="&tabCmd.label;"
+                command="cmd_newNavigatorTab"
+                key="key_newNavigatorTab"/>
+      <menuitem id="appmenu_newNavigator"
+                label="&newNavigatorCmd.label;"
+                command="cmd_newNavigator"
+                key="key_newNavigator"/>
+      <menuitem id="appmenu_newPrivateWindow"
+                class="menuitem-iconic menuitem-iconic-tooltip"
+                label="&newPrivateWindow.label;"
+                command="Tools:PrivateBrowsing"
+                key="key_privatebrowsing"/>
+      <menuitem label="&goOfflineCmd.label;"
+                id="appmenu_offlineModeRecovery"
+                type="checkbox"
+                observes="workOfflineMenuitemState"
+                oncommand="BrowserOffline.toggleOfflineStatus();"/>
+      <menuseparator class="appmenu-menuseparator"/>
+      <hbox>
+        <menuitem id="appmenu-edit-label"
+                  label="&appMenuEdit.label;"
+                  disabled="true"/>
+        <toolbarbutton id="appmenu-cut"
+                       class="appmenu-edit-button"
+                       command="cmd_cut"
+                       onclick="if (!this.disabled) hidePopup();"
+                       tooltiptext="&cutButton.tooltip;"/>
+        <toolbarbutton id="appmenu-copy"
+                       class="appmenu-edit-button"
+                       command="cmd_copy"
+                       onclick="if (!this.disabled) hidePopup();"
+                       tooltiptext="&copyButton.tooltip;"/>
+        <toolbarbutton id="appmenu-paste"
+                       class="appmenu-edit-button"
+                       command="cmd_paste"
+                       onclick="if (!this.disabled) hidePopup();"
+                       tooltiptext="&pasteButton.tooltip;"/>
+        <spacer flex="1"/>
+        <menu id="appmenu-editmenu">
+          <menupopup id="appmenu-editmenu-menupopup">
+            <menuitem id="appmenu-editmenu-cut"
+                      class="menuitem-iconic"
+                      label="&cutCmd.label;"
+                      key="key_cut"
+                      command="cmd_cut"/>
+            <menuitem id="appmenu-editmenu-copy"
+                      class="menuitem-iconic"
+                      label="&copyCmd.label;"
+                      key="key_copy"
+                      command="cmd_copy"/>
+            <menuitem id="appmenu-editmenu-paste"
+                      class="menuitem-iconic"
+                      label="&pasteCmd.label;"
+                      key="key_paste"
+                      command="cmd_paste"/>
+            <menuseparator/>
+            <menuitem id="appmenu-editmenu-undo"
+                      label="&undoCmd.label;"
+                      key="key_undo"
+                      command="cmd_undo"/>
+            <menuitem id="appmenu-editmenu-redo"
+                      label="&redoCmd.label;"
+                      key="key_redo"
+                      command="cmd_redo"/>
+            <menuseparator/>
+            <menuitem id="appmenu-editmenu-selectAll"
+                      label="&selectAllCmd.label;"
+                      key="key_selectAll"
+                      command="cmd_selectAll"/>
+            <menuseparator/>
+            <menuitem id="appmenu-editmenu-delete"
+                      label="&deleteCmd.label;"
+                      key="key_delete"
+                      command="cmd_delete"/>
+          </menupopup>
+        </menu>
+      </hbox>
+      <menuitem id="appmenu_find"
+                class="menuitem-tooltip"
+                label="&appMenuFind.label;"
+                command="cmd_find"
+                key="key_find"/>
+      <menuseparator class="appmenu-menuseparator"/>
+      <menuitem id="appmenu_openFile"
+                label="&openFileCmd.label;"
+                command="Browser:OpenFile"
+                key="openFileKb"/>
+      <menuitem id="appmenu_savePage"
+                class="menuitem-tooltip"
+                label="&savePageCmd.label;"
+                command="Browser:SavePage"
+                key="key_savePage"/>
+      <menuitem id="appmenu_sendLink"
+                label="&emailPageCmd.label;"
+                command="Browser:SendLink"/>
+      <splitmenu id="appmenu_print"
+                 iconic="true"
+                 label="&printCmd.label;"
+                 command="cmd_print">
+          <menupopup>
+            <menuitem id="appmenu_print_popup"
+                      class="menuitem-iconic"
+                      label="&printCmd.label;"
+                      command="cmd_print"
+                      key="printKb"/>
+            <menuitem id="appmenu_printPreview"
+                      label="&printPreviewCmd.label;"
+                      command="cmd_printPreview"/>
+            <menuitem id="appmenu_printSetup"
+                      label="&printSetupCmd.label;"
+                      command="cmd_pageSetup"/>
+          </menupopup>
+      </splitmenu>
+      <menuseparator class="appmenu-menuseparator"/>
+      <splitmenu id="appmenu_webDeveloper"
+                 label="&appMenuWebDeveloper.label;">
+        <menupopup id="appmenu_webDeveloper_popup">
+#define ID_PREFIX appmenu_developer_
+#define OMIT_ACCESSKEYS
+#include browser-charsetmenu.inc
+#undef ID_PREFIX
+#undef OMIT_ACCESSKEYS
+          <menuitem label="&goOfflineCmd.label;"
+                    type="checkbox"
+                    observes="workOfflineMenuitemState"
+                    oncommand="BrowserOffline.toggleOfflineStatus();"/>
+          <menuseparator/>
+          <menuitem id="appmenu_pageSource"
+                    observes="devtoolsMenuBroadcaster_PageSource"/>
+          <menuitem id="appmenu_javascriptConsole"
+                    observes="devtoolsMenuBroadcaster_ErrorConsole"/>
+        </menupopup>
+      </splitmenu>
+      <menuseparator class="appmenu-menuseparator"/>
+#define ID_PREFIX appmenu_
+#define OMIT_ACCESSKEYS
+#include browser-charsetmenu.inc
+#undef ID_PREFIX
+#undef OMIT_ACCESSKEYS
+      <menuitem id="appmenu_fullScreen"
+                class="menuitem-tooltip"
+                label="&fullScreenCmd.label;"
+                type="checkbox"
+                observes="View:FullScreen"
+                key="key_fullScreen"/>
+      <menuitem id="appmenu_restart"
+                class="menuitem-iconic"
+                label="&appMenuRestart.label;"
+                command="cmd_restartApplication"/>
+      <menuitem id="appmenu-quit"
+                class="menuitem-iconic"
+#ifdef XP_WIN
+                label="&quitApplicationCmdWin.label;"
+#else
+                label="&quitApplicationCmd.label;"
+#endif
+                command="cmd_quitApplication"/>
+    </vbox>
+    <vbox id="appmenuSecondaryPane">
+      <splitmenu id="appmenu_bookmarks"
+                 iconic="true"
+                 label="&bookmarksMenu.label;"
+                 command="Browser:ShowAllBookmarks">
+          <menupopup id="appmenu_bookmarksPopup"
+                     placespopup="true"
+                     context="placesContext"
+                     openInTabs="children"
+                     oncommand="BookmarksEventHandler.onCommand(event, this.parentNode._placesView);"
+                     onclick="BookmarksEventHandler.onClick(event, this.parentNode._placesView);"
+                     onpopupshowing="BookmarkingUI.onPopupShowing(event);
+                                     if (!this.parentNode._placesView)
+                                       new PlacesMenu(event, 'place:folder=BOOKMARKS_MENU');"
+                     tooltip="bhTooltip"
+                     popupsinherittooltip="true">
+            <menuitem id="appmenu_showAllBookmarks"
+                      class="menuitem-iconic"
+                      label="&organizeBookmarks.label;"
+                      command="Browser:ShowAllBookmarks"
+                      context=""
+                      key="manBookmarkKb"/>
+            <menuseparator/>
+            <menuitem id="appmenu_bookmarkThisPage"
+                      class="menuitem-iconic"
+                      label="&bookmarkThisPageCmd.label;"
+                      command="Browser:AddBookmarkAs"
+                      key="addBookmarkAsKb"/>
+            <menuitem id="appmenu_subscribeToPage"
+                      class="menuitem-iconic"
+                      label="&subscribeToPageMenuitem.label;"
+                      oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                      onclick="checkForMiddleClick(this, event);"
+                      observes="singleFeedMenuitemState"/>
+            <menu id="appmenu_subscribeToPageMenu"
+                  class="menu-iconic"
+                  label="&subscribeToPageMenupopup.label;"
+                  observes="multipleFeedsMenuState">
+              <menupopup id="appmenu_subscribeToPageMenupopup"
+                         onpopupshowing="return FeedHandler.buildFeedList(event.target);"
+                         oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                         onclick="checkForMiddleClick(this, event);"/>
+            </menu>
+            <menuseparator/>
+            <menu id="appmenu_bookmarksToolbar"
+                  placesanonid="toolbar-autohide"
+                  class="menu-iconic bookmark-item"
+                  label="&personalbarCmd.label;"
+                  container="true">
+              <menupopup id="appmenu_bookmarksToolbarPopup"
+                         placespopup="true"
+                         context="placesContext"
+                         onpopupshowing="if (!this.parentNode._placesView)
+                                           new PlacesMenu(event, 'place:folder=TOOLBAR');"/>
+            </menu>
+            <menuseparator/>
+            <!-- Bookmarks menu items -->
+            <menuseparator builder="end"
+                           class="hide-if-empty-places-result"/>
+            <menuitem id="appmenu_unsortedBookmarks"
+                      class="menuitem-iconic"
+                      label="&appMenuUnsorted.label;"
+                      oncommand="PlacesCommandHook.showPlacesOrganizer('UnfiledBookmarks');"/>
+          </menupopup>
+      </splitmenu>
+      <splitmenu id="appmenu_history"
+                 iconic="true"
+                 label="&historyMenu.label;"
+                 command="Browser:ShowAllHistory">
+          <menupopup id="appmenu_historyMenupopup"
+                     placespopup="true"
+                     context="placesContext"
+                     oncommand="this.parentNode._placesView._onCommand(event);"
+                     onclick="checkForMiddleClick(this, event);"
+                     onpopupshowing="if (!this.parentNode._placesView)
+                                       new HistoryMenu(event);"
+                     tooltip="bhTooltip"
+                     popupsinherittooltip="true">
+            <menuitem id="appmenu_showAllHistory"
+                      class="menuitem-iconic"
+                      label="&showAllHistoryCmd2.label;"
+                      command="Browser:ShowAllHistory"
+                      key="showAllHistoryKb"/>
+            <menuseparator/>
+            <menuitem id="appmenu_sanitizeHistory"
+                      class="menuitem-iconic"
+                      label="&clearRecentHistory.label;"
+                      key="key_sanitize"
+                      command="Tools:Sanitize"/>
+            <menuseparator class="hide-if-empty-places-result"/>
+#ifdef MOZ_SERVICES_SYNC
+            <menuitem id="appmenu_sync-tabs"
+                      class="syncTabsMenuItem"
+                      label="&syncTabsMenu2.label;"
+                      oncommand="BrowserOpenSyncTabs();"
+                      disabled="true"/>
+#endif
+            <menuitem id="appmenu_restoreLastSession"
+                      label="&historyRestoreLastSession.label;"
+                      command="Browser:RestoreLastSession"/>
+            <menu id="appmenu_recentlyClosedTabsMenu"
+                  class="recentlyClosedTabsMenu"
+                  label="&historyUndoMenu.label;"
+                  disabled="true">
+              <menupopup id="appmenu_recentlyClosedTabsMenupopup"
+                         onpopupshowing="document.getElementById('appmenu_history')._placesView.populateUndoSubmenu();"/>
+            </menu>
+            <menu id="appmenu_recentlyClosedWindowsMenu"
+                  class="recentlyClosedWindowsMenu"
+                  label="&historyUndoWindowMenu.label;"
+                  disabled="true">
+              <menupopup id="appmenu_recentlyClosedWindowsMenupopup"
+                         onpopupshowing="document.getElementById('appmenu_history')._placesView.populateUndoWindowSubmenu();"/>
+            </menu>
+            <menuseparator/>
+          </menupopup>
+      </splitmenu>
+      <menuitem id="appmenu_downloads"
+                class="menuitem-tooltip"
+                label="&downloads.label;"
+                command="Tools:Downloads"
+                key="key_openDownloads"/>
+      <spacer id="appmenuSecondaryPane-spacer"/>
+      <menuitem id="appmenu_addons"
+                class="menuitem-iconic menuitem-iconic-tooltip"
+                label="&addons.label;"
+                command="Tools:Addons"
+                key="key_openAddons"/>
+      <menuitem id="appmenu_permissions"
+                class="menuitem-iconic"
+                label="&permissions.label;"
+                command="Tools:Permissions"
+                key="key_openPermissions"/>
+#ifdef MOZ_SERVICES_SYNC
+      <!-- only one of sync-setup or sync-syncnow will be showing at once -->
+      <menuitem id="sync-setup-appmenu"
+                label="&syncSetup.label;"
+                observes="sync-setup-state"
+                oncommand="gSyncUI.openSetup()"/>
+      <menuitem id="sync-syncnowitem-appmenu"
+                label="&syncSyncNowItem.label;"
+                observes="sync-syncnow-state"
+                oncommand="gSyncUI.doSync(event);"/>
+#endif
+      <splitmenu id="appmenu_customize"
+                 label="&preferencesCmd2.label;"
+                 oncommand="openPreferences();">
+          <menupopup id="appmenu_customizeMenu"
+                     onpopupshowing="onViewToolbarsPopupShowing(event, document.getElementById('appmenu_toggleToolbarsSeparator'));">
+            <menuitem id="appmenu_preferences"
+                      label="&preferencesCmd2.label;"
+                      oncommand="openPreferences();"/>
+            <menuseparator/>
+            <menuseparator id="appmenu_toggleToolbarsSeparator"/>
+            <menuitem id="appmenu_toggleTabsOnTop"
+                      label="&viewTabsOnTop.label;"
+                      type="checkbox"
+                      command="cmd_ToggleTabsOnTop"/>
+            <menuitem id="appmenu_toolbarLayout"
+                      label="&appMenuToolbarLayout.label;"
+                      command="cmd_CustomizeToolbars"/>
+          </menupopup>
+      </splitmenu>
+      <splitmenu id="appmenu_help"
+                 label="&helpMenu.label;"
+                 oncommand="openHelpLink('firefox-help')">
+          <menupopup id="appmenu_helpMenupopup" onpopupshowing="buildHelpMenu();">
+            <menuitem id="appmenu_openHelp"
+                      label="&helpMenu.label;"
+                      oncommand="openHelpLink('firefox-help')"
+                      onclick="checkForMiddleClick(this, event);"/>
+            <menuitem id="appmenu_troubleshootingInfo"
+                      label="&helpTroubleshootingInfo.label;"
+                      oncommand="openTroubleshootingPage()"
+                      onclick="checkForMiddleClick(this,event);"/>
+            <menuitem id="appmenu_safeMode"
+                      label="&appMenuSafeMode.label;"
+                      oncommand="restart(true);"/>
+            <menuseparator/>
+            <menuitem id="appmenu_releaseNotes"
+                      accesskey="&helpReleaseNotes.accesskey;"
+                      label="&helpReleaseNotes.label;"
+                      oncommand="openReleaseNotes();"
+                      onclick="checkForMiddleClick(this, event);"/>
+            <menuitem id="appmenu_feedbackPage"
+                      label="&helpFeedbackPage.label;"
+                      oncommand="openFeedbackPage()"
+                      onclick="checkForMiddleClick(this, event);"/>
+#ifdef MOZ_UPDATER
+            <menuseparator/>
+            <menuitem id="appmenu_checkForUpdates"
+                      class="menuitem-iconic"
+                      label="&updateCmd.label;"
+                      oncommand="checkForUpdates();"/>
+#endif
+            <menuseparator/>
+            <menuitem id="appmenu_about"
+                      label="&aboutProduct.label;"
+                      oncommand="openAboutDialog();"/>
+          </menupopup>
+      </splitmenu>
+    </vbox>
+  </hbox>
+</menupopup>
diff --git a/webbrowser/base/content/browser-charsetmenu.inc b/webbrowser/base/content/browser-charsetmenu.inc
new file mode 100644
index 0000000..628de13
--- /dev/null
+++ b/webbrowser/base/content/browser-charsetmenu.inc
@@ -0,0 +1,62 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#filter substitution
+
+#expand <menu id="__ID_PREFIX__charsetMenu"
+    label="&charsetMenu.label;"
+#ifndef OMIT_ACCESSKEYS
+    accesskey="&charsetMenu.accesskey;"
+#endif
+    oncommand="MultiplexHandler(event)"
+#ifdef OMIT_ACCESSKEYS
+#expand    onpopupshowing="CharsetMenu.build(event, '__ID_PREFIX__');"
+#else
+#expand    onpopupshowing="CharsetMenu.build(event, '__ID_PREFIX__', true);"
+#endif
+    onpopupshown="UpdateMenus(event);">
+  <menupopup>
+    <menu label="&charsetMenuAutodet.label;"
+#ifndef OMIT_ACCESSKEYS
+          accesskey="&charsetMenuAutodet.accesskey;"
+#endif
+        >
+      <menupopup>
+        <menuitem type="radio"
+                  name="detectorGroup"
+#expand           id="__ID_PREFIX__chardet.off"
+                  label="&charsetMenuAutodet.off.label;"
+#ifndef OMIT_ACCESSKEYS
+                  accesskey="&charsetMenuAutodet.off.accesskey;"
+#endif
+                  />
+        <menuitem type="radio"
+                  name="detectorGroup"
+#expand           id="__ID_PREFIX__chardet.ja_parallel_state_machine"
+                  label="&charsetMenuAutodet.ja.label;"
+#ifndef OMIT_ACCESSKEYS
+                  accesskey="&charsetMenuAutodet.ja.accesskey;"
+#endif
+                  />
+        <menuitem type="radio"
+                  name="detectorGroup"
+#expand           id="__ID_PREFIX__chardet.ruprob"
+                  label="&charsetMenuAutodet.ru.label;"
+#ifndef OMIT_ACCESSKEYS
+                  accesskey="&charsetMenuAutodet.ru.accesskey;"
+#endif
+                  />
+        <menuitem type="radio"
+                  name="detectorGroup"
+#expand           id="__ID_PREFIX__chardet.ukprob"
+                  label="&charsetMenuAutodet.uk.label;"
+#ifndef OMIT_ACCESSKEYS
+                  accesskey="&charsetMenuAutodet.uk.accesskey;"
+#endif
+                  />
+      </menupopup>
+    </menu>
+    <menuseparator/>
+  </menupopup>
+</menu>
diff --git a/webbrowser/base/content/browser-context.inc b/webbrowser/base/content/browser-context.inc
new file mode 100644
index 0000000..38c4725
--- /dev/null
+++ b/webbrowser/base/content/browser-context.inc
@@ -0,0 +1,384 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+      <menuseparator id="page-menu-separator"/>
+      <menuitem id="spell-no-suggestions"
+                disabled="true"
+                label="&spellNoSuggestions.label;"/>
+      <menuitem id="spell-add-to-dictionary"
+                label="&spellAddToDictionary.label;"
+                accesskey="&spellAddToDictionary.accesskey;"
+                oncommand="InlineSpellCheckerUI.addToDictionary();"/>
+      <menuitem id="spell-undo-add-to-dictionary"
+                label="&spellUndoAddToDictionary.label;"
+                accesskey="&spellUndoAddToDictionary.accesskey;"
+                oncommand="InlineSpellCheckerUI.undoAddToDictionary();" />
+      <menuseparator id="spell-suggestions-separator"/>
+      <menuitem id="context-openlinkintab"
+                label="&openLinkCmdInTab.label;"
+                accesskey="&openLinkCmdInTab.accesskey;"
+                oncommand="gContextMenu.openLinkInTab();"/>
+      <menuitem id="context-openlink"
+                label="&openLinkCmd.label;"
+                accesskey="&openLinkCmd.accesskey;"
+                oncommand="gContextMenu.openLink();"/>
+      <menuitem id="context-openlinkprivate"
+                label="&openLinkInPrivateWindowCmd.label;"
+                accesskey="&openLinkInPrivateWindowCmd.accesskey;"
+                oncommand="gContextMenu.openLinkInPrivateWindow();"/>
+      <menuitem id="context-openlinkincurrent"
+                label="&openLinkCmdInCurrent.label;"
+                accesskey="&openLinkCmdInCurrent.accesskey;"
+                oncommand="gContextMenu.openLinkInCurrent();"/>
+      <menuseparator id="context-sep-open"/>
+      <menuitem id="context-bookmarklink"
+                label="&bookmarkThisLinkCmd.label;"
+                accesskey="&bookmarkThisLinkCmd.accesskey;"
+                oncommand="gContextMenu.bookmarkLink();"/>
+      <menuitem id="context-savelink"
+                label="&saveLinkCmd.label;"
+                accesskey="&saveLinkCmd.accesskey;"
+                oncommand="gContextMenu.saveLink();"/>
+      <menuitem id="context-sendlink"
+                label="&sendLinkCmd.label;"
+                accesskey="&sendLinkCmd.accesskey;"
+                oncommand="gContextMenu.sendLink();"/>
+      <menuitem id="context-copyemail"
+                label="&copyEmailCmd.label;"
+                accesskey="&copyEmailCmd.accesskey;"
+                oncommand="gContextMenu.copyEmail();"/>
+      <menuitem id="context-copylink"
+                label="&copyLinkCmd.label;"
+                accesskey="&copyLinkCmd.accesskey;"
+                oncommand="goDoCommand('cmd_copyLink');"/>
+      <menuseparator id="context-sep-copylink"/>
+      <menuitem id="context-media-play"
+                label="&mediaPlay.label;"
+                accesskey="&mediaPlay.accesskey;"
+                oncommand="gContextMenu.mediaCommand('play');"/>
+      <menuitem id="context-media-pause"
+                label="&mediaPause.label;"
+                accesskey="&mediaPause.accesskey;"
+                oncommand="gContextMenu.mediaCommand('pause');"/>
+      <menuitem id="context-media-mute"
+                label="&mediaMute.label;"
+                accesskey="&mediaMute.accesskey;"
+                oncommand="gContextMenu.mediaCommand('mute');"/>
+      <menuitem id="context-media-unmute"
+                label="&mediaUnmute.label;"
+                accesskey="&mediaUnmute.accesskey;"
+                oncommand="gContextMenu.mediaCommand('unmute');"/>
+      <menu id="context-media-playbackrate" label="&mediaPlaybackRate2.label;" accesskey="&mediaPlaybackRate2.accesskey;">
+        <menupopup>
+          <menuitem id="context-media-playbackrate-050x"
+                    label="&mediaPlaybackRate050x.label;"
+                    accesskey="&mediaPlaybackRate050x.accesskey;"
+                    type="radio"
+                    name="playbackrate"
+                    oncommand="gContextMenu.mediaCommand('playbackRate', 0.5);"/>
+          <menuitem id="context-media-playbackrate-100x"
+                    label="&mediaPlaybackRate100x.label;"
+                    accesskey="&mediaPlaybackRate100x.accesskey;"
+                    type="radio"
+                    name="playbackrate"
+                    checked="true"
+                    oncommand="gContextMenu.mediaCommand('playbackRate', 1.0);"/>
+          <menuitem id="context-media-playbackrate-150x"
+                    label="&mediaPlaybackRate150x.label;"
+                    accesskey="&mediaPlaybackRate150x.accesskey;"
+                    type="radio"
+                    name="playbackrate"
+                    oncommand="gContextMenu.mediaCommand('playbackRate', 1.5);"/>
+          <menuitem id="context-media-playbackrate-200x"
+                    label="&mediaPlaybackRate200x.label;"
+                    accesskey="&mediaPlaybackRate200x.accesskey;"
+                    type="radio"
+                    name="playbackrate"
+                    oncommand="gContextMenu.mediaCommand('playbackRate', 2.0);"/>
+        </menupopup>
+      </menu>
+      <menuitem id="context-media-loop"
+                label="&mediaLoop.label;"
+                accesskey="&mediaLoop.accesskey;"
+                type="checkbox"
+                oncommand="gContextMenu.mediaCommand('loop');"/>
+      <menuitem id="context-media-showcontrols"
+                label="&mediaShowControls.label;"
+                accesskey="&mediaShowControls.accesskey;"
+                oncommand="gContextMenu.mediaCommand('showcontrols');"/>
+      <menuitem id="context-media-hidecontrols"
+                label="&mediaHideControls.label;"
+                accesskey="&mediaHideControls.accesskey;"
+                oncommand="gContextMenu.mediaCommand('hidecontrols');"/>
+      <menuitem id="context-video-showstats"
+                accesskey="&videoShowStats.accesskey;"
+                label="&videoShowStats.label;"
+                oncommand="gContextMenu.mediaCommand('showstats');"/>
+      <menuitem id="context-video-hidestats"
+                accesskey="&videoHideStats.accesskey;"
+                label="&videoHideStats.label;"
+                oncommand="gContextMenu.mediaCommand('hidestats');"/>
+      <menuitem id="context-video-fullscreen"
+                accesskey="&videoFullScreen.accesskey;"
+                label="&videoFullScreen.label;"
+                oncommand="gContextMenu.fullScreenVideo();"/>
+      <menuitem id="context-leave-dom-fullscreen"
+                accesskey="&leaveDOMFullScreen.accesskey;"
+                label="&leaveDOMFullScreen.label;"
+                oncommand="gContextMenu.leaveDOMFullScreen();"/>
+      <menuseparator id="context-media-sep-commands"/>
+      <menuitem id="context-reloadimage"
+                label="&reloadImageCmd.label;"
+                accesskey="&reloadImageCmd.accesskey;"
+                oncommand="gContextMenu.reloadImage();"/>
+      <menuitem id="context-viewimage"
+                label="&viewImageCmd.label;"
+                accesskey="&viewImageCmd.accesskey;"
+                oncommand="gContextMenu.viewMedia(event);"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuitem id="context-viewvideo"
+                label="&viewVideoCmd.label;"
+                accesskey="&viewVideoCmd.accesskey;"
+                oncommand="gContextMenu.viewMedia(event);"
+                onclick="checkForMiddleClick(this, event);"/>
+#ifdef CONTEXT_COPY_IMAGE_CONTENTS
+      <menuitem id="context-copyimage-contents"
+                label="&copyImageContentsCmd.label;"
+                accesskey="&copyImageContentsCmd.accesskey;"
+                oncommand="goDoCommand('cmd_copyImage');"/>
+#endif
+      <menuitem id="context-copyimage"
+                label="&copyImageCmd.label;"
+                accesskey="&copyImageCmd.accesskey;"
+                oncommand="gContextMenu.copyMediaLocation();"/>
+      <menuitem id="context-copyvideourl"
+                label="&copyVideoURLCmd.label;"
+                accesskey="&copyVideoURLCmd.accesskey;"
+                oncommand="gContextMenu.copyMediaLocation();"/>
+      <menuitem id="context-copyaudiourl"
+                label="&copyAudioURLCmd.label;"
+                accesskey="&copyAudioURLCmd.accesskey;"
+                oncommand="gContextMenu.copyMediaLocation();"/>
+      <menuseparator id="context-sep-copyimage"/>
+      <menuitem id="context-saveimage"
+                label="&saveImageCmd.label;"
+                accesskey="&saveImageCmd.accesskey;"
+                oncommand="gContextMenu.saveMedia();"/>
+      <menuitem id="context-sendimage"
+                label="&emailImageCmd.label;"
+                accesskey="&emailImageCmd.accesskey;"
+                oncommand="gContextMenu.sendMedia();"/>
+      <menuitem id="context-setDesktopBackground"
+                label="&setDesktopBackgroundCmd.label;"
+                accesskey="&setDesktopBackgroundCmd.accesskey;"
+                oncommand="gContextMenu.setDesktopBackground();"/>
+      <menuitem id="context-viewimageinfo"
+                label="&viewImageInfoCmd.label;"
+                accesskey="&viewImageInfoCmd.accesskey;"
+                oncommand="gContextMenu.viewImageInfo();"/>
+      <menuitem id="context-savevideo"
+                label="&saveVideoCmd.label;"
+                accesskey="&saveVideoCmd.accesskey;"
+                oncommand="gContextMenu.saveMedia();"/>
+      <menuitem id="context-saveaudio"
+                label="&saveAudioCmd.label;"
+                accesskey="&saveAudioCmd.accesskey;"
+                oncommand="gContextMenu.saveMedia();"/>
+      <menuitem id="context-video-saveimage"
+                accesskey="&videoSaveImage.accesskey;"
+                label="&videoSaveImage.label;"
+                oncommand="gContextMenu.saveVideoFrameAsImage();"/>
+      <menuitem id="context-sendvideo"
+                label="&emailVideoCmd.label;"
+                accesskey="&emailVideoCmd.accesskey;"
+                oncommand="gContextMenu.sendMedia();"/>
+      <menuitem id="context-sendaudio"
+                label="&emailAudioCmd.label;"
+                accesskey="&emailAudioCmd.accesskey;"
+                oncommand="gContextMenu.sendMedia();"/>
+      <menuitem id="context-ctp-play"
+                label="&playPluginCmd.label;"
+                accesskey="&playPluginCmd.accesskey;"
+                oncommand="gContextMenu.playPlugin();"/>
+      <menuitem id="context-ctp-hide"
+                label="&hidePluginCmd.label;"
+                accesskey="&hidePluginCmd.accesskey;"
+                oncommand="gContextMenu.hidePlugin();"/>
+      <menuseparator id="context-sep-ctp"/>
+      <menuitem id="context-back"
+                label="&backCmd.label;"
+                accesskey="&backCmd.accesskey;"
+                command="Browser:BackOrBackDuplicate"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuitem id="context-forward"
+                label="&forwardCmd.label;"
+                accesskey="&forwardCmd.accesskey;"
+                command="Browser:ForwardOrForwardDuplicate"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuitem id="context-reload"
+                label="&reloadCmd.label;"
+                accesskey="&reloadCmd.accesskey;"
+                oncommand="gContextMenu.reload(event);"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuitem id="context-stop"
+                label="&stopCmd.label;"
+                accesskey="&stopCmd.accesskey;"
+                command="Browser:Stop"/>
+      <menuseparator id="context-sep-stop"/>
+      <menuitem id="context-bookmarkpage"
+                label="&bookmarkPageCmd2.label;"
+                accesskey="&bookmarkPageCmd2.accesskey;"
+                oncommand="gContextMenu.bookmarkThisPage();"/>
+      <menuitem id="context-savepage"
+                label="&savePageCmd.label;"
+                accesskey="&savePageCmd.accesskey2;"
+                oncommand="gContextMenu.savePageAs();"/>
+      <menuitem id="context-sendpage"
+                label="&sendPageCmd.label;"
+                accesskey="&sendPageCmd.accesskey;"
+                oncommand="gContextMenu.sendPage();"/>
+      <menuseparator id="context-sep-viewbgimage"/>
+      <menuitem id="context-viewbgimage"
+                label="&viewBGImageCmd.label;"
+                accesskey="&viewBGImageCmd.accesskey;"
+                oncommand="gContextMenu.viewBGImage(event);"
+                onclick="checkForMiddleClick(this, event);"/>
+      <menuitem id="context-undo"
+                label="&undoCmd.label;"
+                accesskey="&undoCmd.accesskey;"
+                command="cmd_undo"/>
+      <menuseparator id="context-sep-undo"/>
+      <menuitem id="context-cut"
+                label="&cutCmd.label;"
+                accesskey="&cutCmd.accesskey;"
+                command="cmd_cut"/>
+      <menuitem id="context-copy"
+                label="&copyCmd.label;"
+                accesskey="&copyCmd.accesskey;"
+                command="cmd_copy"/>
+      <menuitem id="context-paste"
+                label="&pasteCmd.label;"
+                accesskey="&pasteCmd.accesskey;"
+                command="cmd_paste"/>
+      <menuitem id="context-delete"
+                label="&deleteCmd.label;"
+                accesskey="&deleteCmd.accesskey;"
+                command="cmd_delete"/>
+      <menuseparator id="context-sep-paste"/>
+      <menuitem id="context-selectall"
+                label="&selectAllCmd.label;"
+                accesskey="&selectAllCmd.accesskey;"
+                command="cmd_selectAll"/>
+      <menuseparator id="context-sep-selectall"/>
+      <menuitem id="context-keywordfield"
+                label="&keywordfield.label;"
+                accesskey="&keywordfield.accesskey;"
+                oncommand="AddKeywordForSearchField();"/>
+      <menuitem id="context-searchselect"
+                oncommand="BrowserSearch.loadSearchFromContext(this.searchTerms);"/>
+      <menuseparator id="frame-sep"/>
+      <menu id="frame" label="&thisFrameMenu.label;" accesskey="&thisFrameMenu.accesskey;">
+        <menupopup>
+          <menuitem id="context-showonlythisframe"
+                    label="&showOnlyThisFrameCmd.label;"
+                    accesskey="&showOnlyThisFrameCmd.accesskey;"
+                    oncommand="gContextMenu.showOnlyThisFrame();"/>
+          <menuitem id="context-openframeintab"
+                    label="&openFrameCmdInTab.label;"
+                    accesskey="&openFrameCmdInTab.accesskey;"
+                    oncommand="gContextMenu.openFrameInTab();"/>
+          <menuitem id="context-openframe"
+                    label="&openFrameCmd.label;"
+                    accesskey="&openFrameCmd.accesskey;"
+                    oncommand="gContextMenu.openFrame();"/>
+          <menuseparator id="open-frame-sep"/>
+          <menuitem id="context-reloadframe"
+                    label="&reloadFrameCmd.label;"
+                    accesskey="&reloadFrameCmd.accesskey;"
+                    oncommand="gContextMenu.reloadFrame();"/>
+          <menuseparator/>
+          <menuitem id="context-bookmarkframe"
+                    label="&bookmarkThisFrameCmd.label;"
+                    accesskey="&bookmarkThisFrameCmd.accesskey;"
+                    oncommand="gContextMenu.addBookmarkForFrame();"/>
+          <menuitem id="context-saveframe"
+                    label="&saveFrameCmd.label;"
+                    accesskey="&saveFrameCmd.accesskey;"
+                    oncommand="gContextMenu.saveFrame();"/>
+          <menuseparator/>
+          <menuitem id="context-printframe"
+                    label="&printFrameCmd.label;"
+                    accesskey="&printFrameCmd.accesskey;"
+                    oncommand="gContextMenu.printFrame();"/>
+          <menuseparator/>
+          <menuitem id="context-viewframesource"
+                    label="&viewFrameSourceCmd.label;"
+                    accesskey="&viewFrameSourceCmd.accesskey;"
+                    oncommand="gContextMenu.viewFrameSource();"
+                    observes="isFrameImage"/>
+          <menuitem id="context-viewframeinfo"
+                    label="&viewFrameInfoCmd.label;"
+                    accesskey="&viewFrameInfoCmd.accesskey;"
+                    oncommand="gContextMenu.viewFrameInfo();"/>
+        </menupopup>
+      </menu>
+      <menuitem id="context-viewpartialsource-selection"
+                label="&viewPartialSourceForSelectionCmd.label;"
+                accesskey="&viewPartialSourceCmd.accesskey;"
+                oncommand="gContextMenu.viewPartialSource('selection');"
+                observes="isImage"/>
+      <menuitem id="context-viewpartialsource-mathml"
+                label="&viewPartialSourceForMathMLCmd.label;"
+                accesskey="&viewPartialSourceCmd.accesskey;"
+                oncommand="gContextMenu.viewPartialSource('mathml');"
+                observes="isImage"/>
+      <menuseparator id="context-sep-viewsource"/>
+      <menuitem id="context-viewsource"
+                label="&viewPageSourceCmd.label;"
+                accesskey="&viewPageSourceCmd.accesskey;"
+                oncommand="BrowserViewSourceOfDocument(gContextMenu.browser.contentDocument);"
+                observes="isImage"/>
+      <menuitem id="context-viewinfo"
+                label="&viewPageInfoCmd.label;"
+                accesskey="&viewPageInfoCmd.accesskey;"
+                oncommand="gContextMenu.viewInfo();"/>
+      <menuseparator id="spell-separator"/>
+      <menuitem id="spell-check-enabled"
+                label="&spellCheckToggle.label;"
+                type="checkbox"
+                accesskey="&spellCheckToggle.accesskey;"
+                oncommand="InlineSpellCheckerUI.toggleEnabled();"/>
+      <menuitem id="spell-add-dictionaries-main"
+                label="&spellAddDictionaries.label;"
+                accesskey="&spellAddDictionaries.accesskey;"
+                oncommand="gContextMenu.addDictionaries();"/>
+      <menu id="spell-dictionaries"
+            label="&spellDictionaries.label;"
+            accesskey="&spellDictionaries.accesskey;">
+          <menupopup id="spell-dictionaries-menu">
+              <menuseparator id="spell-language-separator"/>
+              <menuitem id="spell-add-dictionaries"
+                        label="&spellAddDictionaries.label;"
+                        accesskey="&spellAddDictionaries.accesskey;"
+                        oncommand="gContextMenu.addDictionaries();"/>
+          </menupopup>
+      </menu>
+      <menuseparator hidden="true" id="context-sep-bidi"/>
+      <menuitem hidden="true" id="context-bidi-text-direction-toggle"
+                label="&bidiSwitchTextDirectionItem.label;"
+                accesskey="&bidiSwitchTextDirectionItem.accesskey;"
+                command="cmd_switchTextDirection"/>
+      <menuitem hidden="true" id="context-bidi-page-direction-toggle"
+                label="&bidiSwitchPageDirectionItem.label;"
+                accesskey="&bidiSwitchPageDirectionItem.accesskey;"
+                oncommand="gContextMenu.switchPageDirection();"/>
+#ifdef MOZ_DEVTOOLS
+      <menuseparator id="inspect-separator" hidden="true"/>
+      <menuitem id="context-inspect"
+                hidden="true"
+                label="&inspectContextMenu.label;"
+                accesskey="&inspectContextMenu.accesskey;"
+                oncommand="gContextMenu.inspectNode();"/>
+#endif
diff --git a/webbrowser/base/content/browser-devtools-theme.js b/webbrowser/base/content/browser-devtools-theme.js
new file mode 100644
index 0000000..7b21dde
--- /dev/null
+++ b/webbrowser/base/content/browser-devtools-theme.js
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Listeners for the DevTools theme.
+ */
+var DevToolsTheme = {
+  _devtoolsThemePrefName: "devtools.theme",
+  styleSheet: null,
+  initialized: false,
+
+  get isStyleSheetEnabled() {
+    return this.styleSheet && !this.styleSheet.sheet.disabled;
+  },
+
+  init: function () {
+    this.initialized = true;
+    Services.prefs.addObserver(this._devtoolsThemePrefName, this, false);
+    Services.obs.addObserver(this, "lightweight-theme-styling-update", false);
+    Services.obs.addObserver(this, "lightweight-theme-window-updated", false);
+    this._updateDevtoolsThemeAttribute();
+  },
+
+  observe: function (subject, topic, data) {
+    if (topic == "lightweight-theme-styling-update") {
+      let newTheme = JSON.parse(data);
+      this._toggleStyleSheet();
+    }
+
+    if (topic == "nsPref:changed" && data == this._devtoolsThemePrefName) {
+      this._updateDevtoolsThemeAttribute();
+    }
+  },
+
+  _inferBrightness: function() {
+    ToolbarIconColor.inferFromText();
+    // Get an inverted full screen button if the dark theme is applied.
+    if (this.isStyleSheetEnabled &&
+        document.documentElement.getAttribute("devtoolstheme") == "dark") {
+      document.documentElement.setAttribute("brighttitlebarforeground", "true");
+    } else {
+      document.documentElement.removeAttribute("brighttitlebarforeground");
+    }
+  },
+
+  _updateDevtoolsThemeAttribute: function() {
+    // Set an attribute on root element to make it possible
+    // to change colors based on the selected devtools theme.
+    let devtoolsTheme = Services.prefs.getCharPref(this._devtoolsThemePrefName);
+    if (devtoolsTheme != "dark") {
+      devtoolsTheme = "light";
+    }
+    document.documentElement.setAttribute("devtoolstheme", devtoolsTheme);
+    this._inferBrightness();
+  },
+
+  handleEvent: function(e) {
+    if (e.type === "load") {
+      this.styleSheet.removeEventListener("load", this);
+      this.refreshBrowserDisplay();
+    }
+  },
+
+  refreshBrowserDisplay: function() {
+    // Don't touch things on the browser if gBrowserInit.onLoad hasn't
+    // yet fired.
+    if (this.initialized) {
+      gBrowser.tabContainer._positionPinnedTabs();
+      this._inferBrightness();
+    }
+  },
+
+  _toggleStyleSheet: function() {
+    let wasEnabled = this.isStyleSheetEnabled;
+    if (wasEnabled) {
+      this.styleSheet.sheet.disabled = true;
+      this.refreshBrowserDisplay();
+    }
+  },
+
+  uninit: function () {
+    Services.prefs.removeObserver(this._devtoolsThemePrefName, this);
+    Services.obs.removeObserver(this, "lightweight-theme-styling-update", false);
+    Services.obs.removeObserver(this, "lightweight-theme-window-updated", false);
+    if (this.styleSheet) {
+      this.styleSheet.removeEventListener("load", this);
+    }
+    this.styleSheet = null;
+  }
+};
diff --git a/webbrowser/base/content/browser-doctype.inc b/webbrowser/base/content/browser-doctype.inc
new file mode 100644
index 0000000..6ee6384
--- /dev/null
+++ b/webbrowser/base/content/browser-doctype.inc
@@ -0,0 +1,19 @@
+<!DOCTYPE window [
+<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
+%brandDTD;
+<!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd" >
+%browserDTD;
+<!ENTITY % baseMenuDTD SYSTEM "chrome://browser/locale/baseMenuOverlay.dtd" >
+%baseMenuDTD;
+<!ENTITY % charsetDTD SYSTEM "chrome://browser/locale/charsetMenu.dtd" >
+%charsetDTD;
+<!ENTITY % textcontextDTD SYSTEM "chrome://global/locale/textcontext.dtd" >
+%textcontextDTD;
+<!ENTITY % customizeToolbarDTD SYSTEM "chrome://global/locale/customizeToolbar.dtd">
+  %customizeToolbarDTD;
+<!ENTITY % placesDTD SYSTEM "chrome://browser/locale/places/places.dtd">
+%placesDTD;
+<!ENTITY % aboutHomeDTD SYSTEM "chrome://browser/locale/aboutHome.dtd">
+%aboutHomeDTD;
+]>
+
diff --git a/webbrowser/base/content/browser-feeds.js b/webbrowser/base/content/browser-feeds.js
new file mode 100644
index 0000000..c678772
--- /dev/null
+++ b/webbrowser/base/content/browser-feeds.js
@@ -0,0 +1,224 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/**
+ * The Feed Handler object manages discovery of RSS/ATOM feeds in web pages
+ * and shows UI when they are discovered.
+ */
+var FeedHandler = {
+
+  /* Pale Moon: Address Bar: Feeds 
+   * The click handler for the Feed icon in the location bar. Opens the
+   * subscription page if user is not given a choice of feeds.
+   * (Otherwise the list of available feeds will be presented to the
+   * user in a popup menu.)
+   */
+  onFeedButtonPMClick: function(event) {
+    event.stopPropagation();
+
+    if (event.target.hasAttribute("feed") &&
+        event.eventPhase == Event.AT_TARGET &&
+        (event.button == 0 || event.button == 1)) {
+        this.subscribeToFeed(null, event);
+    }
+  },
+  
+  /**
+   * The click handler for the Feed icon in the toolbar. Opens the
+   * subscription page if user is not given a choice of feeds.
+   * (Otherwise the list of available feeds will be presented to the
+   * user in a popup menu.)
+   */
+  onFeedButtonClick: function(event) {
+    event.stopPropagation();
+
+    let feeds = gBrowser.selectedBrowser.feeds || [];
+    // If there are multiple feeds, the menu will open, so no need to do
+    // anything. If there are no feeds, nothing to do either.
+    if (feeds.length != 1)
+      return;
+
+    if (event.eventPhase == Event.AT_TARGET &&
+        (event.button == 0 || event.button == 1)) {
+      this.subscribeToFeed(feeds[0].href, event);
+    }
+  },
+
+ /** Called when the user clicks on the Subscribe to This Page... menu item.
+   * Builds a menu of unique feeds associated with the page, and if there
+   * is only one, shows the feed inline in the browser window.
+   * @param   menuPopup
+   *          The feed list menupopup to be populated.
+   * @returns true if the menu should be shown, false if there was only
+   *          one feed and the feed should be shown inline in the browser
+   *          window (do not show the menupopup).
+   */
+  buildFeedList: function(menuPopup) {
+    var feeds = gBrowser.selectedBrowser.feeds;
+    if (feeds == null) {
+      // XXX hack -- menu opening depends on setting of an "open"
+      // attribute, and the menu refuses to open if that attribute is
+      // set (because it thinks it's already open).  onpopupshowing gets
+      // called after the attribute is unset, and it doesn't get unset
+      // if we return false.  so we unset it here; otherwise, the menu
+      // refuses to work past this point.
+      menuPopup.parentNode.removeAttribute("open");
+      return false;
+    }
+
+    while (menuPopup.firstChild)
+      menuPopup.removeChild(menuPopup.firstChild);
+
+    if (feeds.length == 1) {
+      var feedButtonPM = document.getElementById("ub-feed-button");
+      if (feedButtonPM)
+        feedButtonPM.setAttribute("feed", feeds[0].href);
+      return false;
+    }
+
+    if (feeds.length <= 1)
+      return false;
+
+    // Build the menu showing the available feed choices for viewing.
+    for (let feedInfo of feeds) {
+      var menuItem = document.createElement("menuitem");
+      var baseTitle = feedInfo.title || feedInfo.href;
+      var labelStr = gNavigatorBundle.getFormattedString("feedShowFeedNew", [baseTitle]);
+      menuItem.setAttribute("class", "feed-menuitem");
+      menuItem.setAttribute("label", labelStr);
+      menuItem.setAttribute("feed", feedInfo.href);
+      menuItem.setAttribute("tooltiptext", feedInfo.href);
+      menuItem.setAttribute("crop", "center");
+      menuPopup.appendChild(menuItem);
+    }
+    return true;
+  },
+
+  /**
+   * Subscribe to a given feed.  Called when
+   *   1. Page has a single feed and user clicks feed icon in location bar
+   *   2. Page has a single feed and user selects Subscribe menu item
+   *   3. Page has multiple feeds and user selects from feed icon popup
+   *   4. Page has multiple feeds and user selects from Subscribe submenu
+   * @param   href
+   *          The feed to subscribe to. May be null, in which case the
+   *          event target's feed attribute is examined.
+   * @param   event
+   *          The event this method is handling. Used to decide where
+   *          to open the preview UI. (Optional, unless href is null)
+   */
+  subscribeToFeed: function(href, event) {
+    // Just load the feed in the content area to either subscribe or show the
+    // preview UI
+    if (!href)
+      href = event.target.getAttribute("feed");
+    urlSecurityCheck(href, gBrowser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
+    var feedURI = makeURI(href, document.characterSet);
+    // Use the feed scheme so X-Moz-Is-Feed will be set
+    // The value doesn't matter
+    if (/^https?$/.test(feedURI.scheme))
+      href = "feed:" + href;
+    this.loadFeed(href, event);
+  },
+
+  loadFeed: function(href, event) {
+    var feeds = gBrowser.selectedBrowser.feeds;
+    try {
+      openUILink(href, event, { ignoreAlt: true });
+    }
+    finally {
+      // We might default to a livebookmarks modal dialog,
+      // so reset that if the user happens to click it again
+      gBrowser.selectedBrowser.feeds = feeds;
+    }
+  },
+
+  get _feedMenuitem() {
+    delete this._feedMenuitem;
+    return this._feedMenuitem = document.getElementById("singleFeedMenuitemState");
+  },
+
+  get _feedMenupopup() {
+    delete this._feedMenupopup;
+    return this._feedMenupopup = document.getElementById("multipleFeedsMenuState");
+  },
+
+  /**
+   * Update the browser UI to show whether or not feeds are available when
+   * a page is loaded or the user switches tabs to a page that has feeds.
+   */
+  updateFeeds: function() {
+    if (this._updateFeedTimeout)
+      clearTimeout(this._updateFeedTimeout);
+
+    var feeds = gBrowser.selectedBrowser.feeds;
+    var haveFeeds = feeds && feeds.length > 0;
+
+    var feedButtonPM = document.getElementById("ub-feed-button");
+
+    var feedButton = document.getElementById("feed-button");
+    
+    if (feedButton)
+      feedButton.disabled = !haveFeeds;
+    
+    if (feedButtonPM) {
+        if (!haveFeeds) {
+          feedButtonPM.collapsed = true;
+          feedButtonPM.removeAttribute("feed");
+        } else {
+          feedButtonPM.collapsed = !gPrefService.getBoolPref("browser.urlbar.rss");
+        }
+      }
+
+    if (!haveFeeds) {
+      this._feedMenuitem.setAttribute("disabled", "true");
+      this._feedMenuitem.removeAttribute("hidden");
+      this._feedMenupopup.setAttribute("hidden", "true");
+      return;
+    }
+
+    if (feeds.length > 1) {
+      if (feedButtonPM)
+        feedButtonPM.removeAttribute("feed");
+      this._feedMenuitem.setAttribute("hidden", "true");
+      this._feedMenupopup.removeAttribute("hidden");
+    } else {
+      if (feedButtonPM)
+        feedButtonPM.setAttribute("feed", feeds[0].href);
+      this._feedMenuitem.setAttribute("feed", feeds[0].href);
+      this._feedMenuitem.removeAttribute("disabled");
+      this._feedMenuitem.removeAttribute("hidden");
+      this._feedMenupopup.setAttribute("hidden", "true");
+    }
+  },
+
+  addFeed: function(link, targetDoc) {
+    // find which tab this is for, and set the attribute on the browser
+    var browserForLink = gBrowser.getBrowserForDocument(targetDoc);
+    if (!browserForLink) {
+      // ignore feeds loaded in subframes (see bug 305472)
+      return;
+    }
+
+    if (!browserForLink.feeds)
+      browserForLink.feeds = [];
+
+    browserForLink.feeds.push({ href: link.href, title: link.title });
+
+    // If this addition was for the current browser, update the UI. For
+    // background browsers, we'll update on tab switch.
+    if (browserForLink == gBrowser.selectedBrowser) {
+      var feedButtonPM = document.getElementById("ub-feed-button");
+      if (feedButtonPM)
+        feedButtonPM.collapsed = !gPrefService.getBoolPref("browser.urlbar.rss");
+      // Batch updates to avoid updating the UI for multiple onLinkAdded events
+      // fired within 100ms of each other.
+      if (this._updateFeedTimeout)
+        clearTimeout(this._updateFeedTimeout);
+      this._updateFeedTimeout = setTimeout(this.updateFeeds.bind(this), 100);
+    }
+  }
+};
diff --git a/webbrowser/base/content/browser-fullScreen.js b/webbrowser/base/content/browser-fullScreen.js
new file mode 100644
index 0000000..e816ce5
--- /dev/null
+++ b/webbrowser/base/content/browser-fullScreen.js
@@ -0,0 +1,462 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+var FullScreen = {
+  _XULNS: "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul",
+
+  toggle: function () {
+    var enterFS = window.fullScreen;
+
+    // Toggle the View:FullScreen command, which controls elements like the
+    // fullscreen menuitem, menubars, and the appmenu.
+    let fullscreenCommand = document.getElementById("View:FullScreen");
+    if (enterFS) {
+      fullscreenCommand.setAttribute("checked", enterFS);
+    } else {
+      fullscreenCommand.removeAttribute("checked");
+    }
+
+#ifdef XP_MACOSX
+    // Make sure the menu items are adjusted.
+    document.getElementById("enterFullScreenItem").hidden = enterFS;
+    document.getElementById("exitFullScreenItem").hidden = !enterFS;
+#endif
+
+    if (!this._fullScrToggler) {
+      this._fullScrToggler = document.getElementById("fullscr-toggler");
+      this._fullScrToggler.addEventListener("mouseover", this._expandCallback, false);
+      this._fullScrToggler.addEventListener("dragenter", this._expandCallback, false);
+    }
+
+    // On OS X Lion we don't want to hide toolbars when entering fullscreen, unless
+    // we're entering DOM fullscreen, in which case we should hide the toolbars.
+    // If we're leaving fullscreen, then we'll go through the exit code below to
+    // make sure toolbars are made visible in the case of DOM fullscreen.
+    if (enterFS && this.useLionFullScreen) {
+      if (document.mozFullScreen) {
+        this.showXULChrome("toolbar", false);
+      }
+      else {
+        gNavToolbox.setAttribute("inFullscreen", true);
+        document.documentElement.setAttribute("inFullscreen", true);
+      }
+      return;
+    }
+
+    // show/hide menubars, toolbars (except the full screen toolbar)
+    this.showXULChrome("toolbar", !enterFS);
+
+    if (enterFS) {
+      document.addEventListener("keypress", this._keyToggleCallback, false);
+      document.addEventListener("popupshown", this._setPopupOpen, false);
+      document.addEventListener("popuphidden", this._setPopupOpen, false);
+      this._shouldAnimate = true;
+      if (gPrefService.getBoolPref("browser.fullscreen.autohide")) {
+        gBrowser.mPanelContainer.addEventListener("mousemove",
+                                                  this._collapseCallback, false);
+      }
+      // We don't animate the toolbar collapse if in DOM full-screen mode,
+      // as the size of the content area would still be changing after the
+      // mozfullscreenchange event fired, which could confuse content script.
+      this.hideNavToolbox(document.mozFullScreen);
+    }
+    else {
+      this.showNavToolbox(false);
+      // This is needed if they use the context menu to quit fullscreen
+      this._isPopupOpen = false;
+
+      document.documentElement.removeAttribute("inDOMFullscreen");
+
+      this.cleanup();
+    }
+  },
+
+  exitDomFullScreen : function() {
+    document.mozCancelFullScreen();
+  },
+
+  handleEvent: function (event) {
+    switch (event.type) {
+      case "activate":
+        if (document.mozFullScreen) {
+          this.showWarning(this.fullscreenDoc);
+        }
+        break;
+      case "transitionend":
+        if (event.propertyName == "opacity")
+          this.cancelWarning();
+        break;
+    }
+  },
+
+  enterDomFullscreen : function(event) {
+    if (!document.mozFullScreen)
+      return;
+
+    // However, if we receive a "MozDOMFullscreen:NewOrigin" event for a document
+    // which is not a subdocument of a currently active (ie. visible) browser
+    // or iframe, we know that we've switched to a different frame since the
+    // request to enter full-screen was made, so we should exit full-screen
+    // since the "full-screen document" isn't acutally visible.
+    if (!event.target.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
+                                 .getInterface(Ci.nsIWebNavigation)
+                                 .QueryInterface(Ci.nsIDocShell).isActive) {
+      document.mozCancelFullScreen();
+      return;
+    }
+
+    let focusManager = Cc["@mozilla.org/focus-manager;1"].getService(Ci.nsIFocusManager);
+    if (focusManager.activeWindow != window) {
+      // The top-level window has lost focus since the request to enter
+      // full-screen was made. Cancel full-screen.
+      document.mozCancelFullScreen();
+      return;
+    }
+
+    document.documentElement.setAttribute("inDOMFullscreen", true);
+
+    if (gFindBarInitialized)
+      gFindBar.close();
+
+    this.showWarning(event.target);
+
+    // Exit DOM full-screen mode upon open, close, or change tab.
+    gBrowser.tabContainer.addEventListener("TabOpen", this.exitDomFullScreen);
+    gBrowser.tabContainer.addEventListener("TabClose", this.exitDomFullScreen);
+    gBrowser.tabContainer.addEventListener("TabSelect", this.exitDomFullScreen);
+
+    // Add listener to detect when the fullscreen window is re-focused.
+    // If a fullscreen window loses focus, we show a warning when the
+    // fullscreen window is refocused.
+    if (!this.useLionFullScreen) {
+      window.addEventListener("activate", this);
+    }
+
+    // Cancel any "hide the toolbar" animation which is in progress, and make
+    // the toolbar hide immediately.
+    this.hideNavToolbox(true);
+  },
+
+  cleanup: function () {
+    if (!window.fullScreen) {
+      gBrowser.mPanelContainer.removeEventListener("mousemove",
+                                                   this._collapseCallback, false);
+      document.removeEventListener("keypress", this._keyToggleCallback, false);
+      document.removeEventListener("popupshown", this._setPopupOpen, false);
+      document.removeEventListener("popuphidden", this._setPopupOpen, false);
+
+      this.cancelWarning();
+      gBrowser.tabContainer.removeEventListener("TabOpen", this.exitDomFullScreen);
+      gBrowser.tabContainer.removeEventListener("TabClose", this.exitDomFullScreen);
+      gBrowser.tabContainer.removeEventListener("TabSelect", this.exitDomFullScreen);
+      if (!this.useLionFullScreen)
+        window.removeEventListener("activate", this);
+      this.fullscreenDoc = null;
+    }
+  },
+
+  // Event callbacks
+  _expandCallback: function()
+  {
+    FullScreen.showNavToolbox();
+  },
+  _collapseCallback: function()
+  {
+    FullScreen.hideNavToolbox();
+  },
+  _keyToggleCallback: function(aEvent)
+  {
+    // if we can use the keyboard (eg Ctrl+L or Ctrl+E) to open the toolbars, we
+    // should provide a way to collapse them too.
+    if (aEvent.keyCode == aEvent.DOM_VK_ESCAPE) {
+      FullScreen.hideNavToolbox(true);
+    }
+    // F6 is another shortcut to the address bar, but its not covered in OpenLocation()
+    else if (aEvent.keyCode == aEvent.DOM_VK_F6)
+      FullScreen.showNavToolbox();
+  },
+
+  // Checks whether we are allowed to collapse the chrome
+  _isPopupOpen: false,
+  _isChromeCollapsed: false,
+  _safeToCollapse: function(forceHide)
+  {
+    if (!gPrefService.getBoolPref("browser.fullscreen.autohide"))
+      return false;
+
+    // a popup menu is open in chrome: don't collapse chrome
+    if (!forceHide && this._isPopupOpen)
+      return false;
+
+    // a textbox in chrome is focused (location bar anyone?): don't collapse chrome
+    if (document.commandDispatcher.focusedElement &&
+        document.commandDispatcher.focusedElement.ownerDocument == document &&
+        document.commandDispatcher.focusedElement.localName == "input") {
+      if (forceHide)
+        // hidden textboxes that still have focus are bad bad bad
+        document.commandDispatcher.focusedElement.blur();
+      else
+        return false;
+    }
+    return true;
+  },
+
+  _setPopupOpen: function(aEvent)
+  {
+    // Popups should only veto chrome collapsing if they were opened when the chrome was not collapsed.
+    // Otherwise, they would not affect chrome and the user would expect the chrome to go away.
+    // e.g. we wouldn't want the autoscroll icon firing this event, so when the user
+    // toggles chrome when moving mouse to the top, it doesn't go away again.
+    if (aEvent.type == "popupshown" && !FullScreen._isChromeCollapsed &&
+        aEvent.target.localName != "tooltip" && aEvent.target.localName != "window")
+      FullScreen._isPopupOpen = true;
+    else if (aEvent.type == "popuphidden" && aEvent.target.localName != "tooltip" &&
+             aEvent.target.localName != "window")
+      FullScreen._isPopupOpen = false;
+  },
+
+  // Autohide helpers for the context menu item
+  getAutohide: function(aItem)
+  {
+    aItem.setAttribute("checked", gPrefService.getBoolPref("browser.fullscreen.autohide"));
+  },
+  setAutohide: function()
+  {
+    gPrefService.setBoolPref("browser.fullscreen.autohide", !gPrefService.getBoolPref("browser.fullscreen.autohide"));
+  },
+
+  // Animate the toolbars disappearing
+  _shouldAnimate: true,
+
+  cancelWarning: function(event) {
+    if (!this.warningBox)
+      return;
+    this.warningBox.removeEventListener("transitionend", this);
+    if (this.warningFadeOutTimeout) {
+      clearTimeout(this.warningFadeOutTimeout);
+      this.warningFadeOutTimeout = null;
+    }
+
+    // Ensure focus switches away from the (now hidden) warning box. If the user
+    // clicked buttons in the fullscreen key authorization UI, it would have been
+    // focused, and any key events would be directed at the (now hidden) chrome
+    // document instead of the target document.
+    gBrowser.selectedBrowser.focus();
+
+    this.warningBox.setAttribute("hidden", true);
+    this.warningBox.removeAttribute("fade-warning-out");
+    this.warningBox = null;
+  },
+
+  warningBox: null,
+  warningFadeOutTimeout: null,
+  fullscreenDoc: null,
+
+  // Shows a warning that the site has entered fullscreen for a short duration.
+  showWarning: function(targetDoc) {
+    let timeout = gPrefService.getIntPref("full-screen-api.warning.timeout");
+    if (!document.mozFullScreen || timeout <= 0)
+      return;
+
+    // Set the strings on the fullscreen warning UI.
+    this.fullscreenDoc = targetDoc;
+    let uri = this.fullscreenDoc.nodePrincipal.URI;
+    let host = null;
+    try {
+      host = uri.host;
+    } catch (e) { }
+    let hostLabel = document.getElementById("full-screen-domain-text");
+    if (host) {
+      // Document's principal's URI has a host. Display a warning including the hostname.
+      let utils = {};
+      Cu.import("resource://gre/modules/DownloadUtils.jsm", utils);
+      let displayHost = utils.DownloadUtils.getURIHost(uri.spec)[0];
+      let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
+
+      hostLabel.textContent = bundle.formatStringFromName("fullscreen.entered", [displayHost], 1);
+      hostLabel.removeAttribute("hidden");
+    } else {
+      hostLabel.setAttribute("hidden", "true");
+    }
+
+    // Note: the warning box can be non-null if the warning box from the previous request
+    // wasn't hidden before another request was made.
+    if (!this.warningBox) {
+      this.warningBox = document.getElementById("full-screen-warning-container");
+      // Add a listener to clean up state after the warning is hidden.
+      this.warningBox.addEventListener("transitionend", this);
+      this.warningBox.removeAttribute("hidden");
+    } else {
+      if (this.warningFadeOutTimeout) {
+        clearTimeout(this.warningFadeOutTimeout);
+        this.warningFadeOutTimeout = null;
+      }
+      this.warningBox.removeAttribute("fade-warning-out");
+    }
+
+    // Set a timeout to fade the warning out after a few moments.
+    this.warningFadeOutTimeout = setTimeout(() => {
+      if (this.warningBox) {
+        this.warningBox.setAttribute("fade-warning-out", "true");
+      }
+    }, timeout);
+  },
+
+  showNavToolbox: function(trackMouse = true) {
+    this._fullScrToggler.hidden = true;
+    gNavToolbox.removeAttribute("fullscreenShouldAnimate");
+    gNavToolbox.style.marginTop = "";
+
+    if (!this._isChromeCollapsed) {
+      return;
+    }
+
+    // Track whether mouse is near the toolbox
+    this._isChromeCollapsed = false;
+    if (trackMouse) {
+      gBrowser.mPanelContainer.addEventListener("mousemove",
+                                                this._collapseCallback, false);
+    }
+  },
+
+  hideNavToolbox: function(forceHide = false) {
+    this._fullScrToggler.hidden = document.mozFullScreen;
+    if (this._isChromeCollapsed) {
+      if (forceHide) {
+        gNavToolbox.removeAttribute("fullscreenShouldAnimate");
+      }
+      return;
+    }
+    if (!this._safeToCollapse(forceHide)) {
+      this._fullScrToggler.hidden = true;
+      return;
+    }
+
+    // browser.fullscreen.animateUp
+    // 0 - never animate up
+    // 1 - animate only for first collapse after entering fullscreen (default for perf's sake)
+    // 2 - animate every time it collapses
+    let animateUp = gPrefService.getIntPref("browser.fullscreen.animateUp");
+    if (animateUp == 0) {
+      this._shouldAnimate = false;
+    } else if (animateUp == 2) {
+      this._shouldAnimate = true;
+    }
+    if (this._shouldAnimate && !forceHide) {
+      gNavToolbox.setAttribute("fullscreenShouldAnimate", true);
+      this._shouldAnimate = false;
+      // Hide the fullscreen toggler until the transition ends.
+      let listener = () => {
+        gNavToolbox.removeEventListener("transitionend", listener, true);
+        if (this._isChromeCollapsed)
+          this._fullScrToggler.hidden = false;
+      };
+      gNavToolbox.addEventListener("transitionend", listener, true);
+      this._fullScrToggler.hidden = true;
+    }
+
+    gNavToolbox.style.marginTop =
+      -gNavToolbox.getBoundingClientRect().height + "px";
+    this._isChromeCollapsed = true;
+    gBrowser.mPanelContainer.removeEventListener("mousemove",
+                                                 this._collapseCallback, false);
+  },
+
+  showXULChrome: function(aTag, aShow)
+  {
+    var els = document.getElementsByTagNameNS(this._XULNS, aTag);
+
+    for (let el of els) {
+      // XXX don't interfere with previously collapsed toolbars
+      if (el.getAttribute("fullscreentoolbar") == "true") {
+        if (!aShow) {
+
+          var toolbarMode = el.getAttribute("mode");
+          if (toolbarMode != "text") {
+            el.setAttribute("saved-mode", toolbarMode);
+            el.setAttribute("saved-iconsize", el.getAttribute("iconsize"));
+            el.setAttribute("mode", "icons");
+            el.setAttribute("iconsize", "small");
+          }
+
+          // Give the main nav bar and the tab bar the fullscreen context menu,
+          // otherwise remove context menu to prevent breakage
+          el.setAttribute("saved-context", el.getAttribute("context"));
+          if (el.id == "nav-bar" || el.id == "TabsToolbar")
+            el.setAttribute("context", "autohide-context");
+          else
+            el.removeAttribute("context");
+
+          // Set the inFullscreen attribute to allow specific styling
+          // in fullscreen mode
+          el.setAttribute("inFullscreen", true);
+        }
+        else {
+          var restoreAttr = function restoreAttr(attrName) {
+            var savedAttr = "saved-" + attrName;
+            if (el.hasAttribute(savedAttr)) {
+              el.setAttribute(attrName, el.getAttribute(savedAttr));
+              el.removeAttribute(savedAttr);
+            }
+          }
+
+          restoreAttr("mode");
+          restoreAttr("iconsize");
+          restoreAttr("context");
+
+          el.removeAttribute("inFullscreen");
+        }
+      } else {
+        // use moz-collapsed so it doesn't persist hidden/collapsed,
+        // so that new windows don't have missing toolbars
+        if (aShow)
+          el.removeAttribute("moz-collapsed");
+        else
+          el.setAttribute("moz-collapsed", "true");
+      }
+    }
+
+    if (aShow) {
+      gNavToolbox.removeAttribute("inFullscreen");
+      document.documentElement.removeAttribute("inFullscreen");
+    } else {
+      gNavToolbox.setAttribute("inFullscreen", true);
+      document.documentElement.setAttribute("inFullscreen", true);
+    }
+
+    // In tabs-on-top mode, move window controls to the tab bar,
+    // and in tabs-on-bottom mode, move them back to the navigation toolbar.
+    // When there is a chance the tab bar may be collapsed, put window
+    // controls on nav bar.
+    var fullscreenctls = document.getElementById("window-controls");
+    var navbar = document.getElementById("nav-bar");
+    var ctlsOnTabbar = window.toolbar.visible &&
+                        (navbar.collapsed || (TabsOnTop.enabled &&
+                        !gPrefService.getBoolPref("browser.tabs.autoHide")));
+    if (fullscreenctls.parentNode == navbar && ctlsOnTabbar) {
+      fullscreenctls.removeAttribute("flex");
+      document.getElementById("TabsToolbar").appendChild(fullscreenctls);
+    }
+    else if (fullscreenctls.parentNode.id == "TabsToolbar" && !ctlsOnTabbar) {
+      fullscreenctls.setAttribute("flex", "1");
+      navbar.appendChild(fullscreenctls);
+    }
+    fullscreenctls.hidden = aShow;
+    
+    ToolbarIconColor.inferFromText();
+  }
+};
+XPCOMUtils.defineLazyGetter(FullScreen, "useLionFullScreen", function() {
+  // We'll only use OS X Lion full screen if we're
+  // * on OS X
+  // * on Lion or higher (Darwin 11+)
+  // * have fullscreenbutton="true"
+#ifdef XP_MACOSX
+  return parseFloat(Services.sysinfo.getProperty("version")) >= 11 &&
+         document.documentElement.getAttribute("fullscreenbutton") == "true";
+#else
+  return false;
+#endif
+});
diff --git a/webbrowser/base/content/browser-fullZoom.js b/webbrowser/base/content/browser-fullZoom.js
new file mode 100644
index 0000000..890cd84
--- /dev/null
+++ b/webbrowser/base/content/browser-fullZoom.js
@@ -0,0 +1,526 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Controls the "full zoom" setting and its site-specific preferences.
+ */
+var FullZoom = {
+  // Identifies the setting in the content prefs database.
+  name: "browser.content.full-zoom",
+
+  // browser.zoom.siteSpecific preference cache
+  _siteSpecificPref: undefined,
+
+  // browser.zoom.updateBackgroundTabs preference cache
+  updateBackgroundTabs: undefined,
+
+  // This maps the browser to monotonically increasing integer
+  // tokens. _browserTokenMap[browser] is increased each time the zoom is
+  // changed in the browser. See _getBrowserToken and _ignorePendingZoomAccesses.
+  _browserTokenMap: new WeakMap(),
+
+  // Stores initial locations if we receive onLocationChange
+  // events before we're initialized.
+  _initialLocations: new WeakMap(),
+
+  get siteSpecific() {
+    return this._siteSpecificPref;
+  },
+
+  // nsISupports
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMEventListener,
+                                         Ci.nsIObserver,
+                                         Ci.nsIContentPrefObserver,
+                                         Ci.nsISupportsWeakReference,
+                                         Ci.nsISupports]),
+
+  // Initialization & Destruction
+
+  init: function FullZoom_init() {
+    gBrowser.addEventListener("ZoomChangeUsingMouseWheel", this);
+
+    // Register ourselves with the service so we know when our pref changes.
+    this._cps2 = Cc["@mozilla.org/content-pref/service;1"].
+                 getService(Ci.nsIContentPrefService2);
+    this._cps2.addObserverForName(this.name, this);
+
+    this._siteSpecificPref =
+      gPrefService.getBoolPref("browser.zoom.siteSpecific");
+    this.updateBackgroundTabs =
+      gPrefService.getBoolPref("browser.zoom.updateBackgroundTabs");
+    // Listen for changes to the browser.zoom branch so we can enable/disable
+    // updating background tabs and per-site saving and restoring of zoom levels.
+    gPrefService.addObserver("browser.zoom.", this, true);
+
+    // If we received onLocationChange events for any of the current browsers
+    // before we were initialized we want to replay those upon initialization.
+    for (let browser of gBrowser.browsers) {
+      if (this._initialLocations.has(browser)) {
+        this.onLocationChange(...this._initialLocations.get(browser), browser);
+      }
+    }
+
+    // This should be nulled after initialization.
+    this._initialLocations = null;
+  },
+
+  destroy: function FullZoom_destroy() {
+    gPrefService.removeObserver("browser.zoom.", this);
+    this._cps2.removeObserverForName(this.name, this);
+    gBrowser.removeEventListener("ZoomChangeUsingMouseWheel", this);
+  },
+
+
+  // Event Handlers
+
+  // nsIDOMEventListener
+
+  handleEvent: function FullZoom_handleEvent(event) {
+    switch (event.type) {
+      case "ZoomChangeUsingMouseWheel":
+        let browser = this._getTargetedBrowser(event);
+        this._ignorePendingZoomAccesses(browser);
+        this._applyZoomToPref(browser);
+        break;
+    }
+  },
+
+  // nsIObserver
+
+  observe: function (aSubject, aTopic, aData) {
+    switch (aTopic) {
+      case "nsPref:changed":
+        switch (aData) {
+          case "browser.zoom.siteSpecific":
+            this._siteSpecificPref =
+              gPrefService.getBoolPref("browser.zoom.siteSpecific");
+            break;
+          case "browser.zoom.updateBackgroundTabs":
+            this.updateBackgroundTabs =
+              gPrefService.getBoolPref("browser.zoom.updateBackgroundTabs");
+            break;
+        }
+        break;
+    }
+  },
+
+  // nsIContentPrefObserver
+
+  onContentPrefSet: function FullZoom_onContentPrefSet(aGroup, aName, aValue, aIsPrivate) {
+    this._onContentPrefChanged(aGroup, aValue, aIsPrivate);
+  },
+
+  onContentPrefRemoved: function FullZoom_onContentPrefRemoved(aGroup, aName, aIsPrivate) {
+    this._onContentPrefChanged(aGroup, undefined, aIsPrivate);
+  },
+
+  /**
+   * Appropriately updates the zoom level after a content preference has
+   * changed.
+   *
+   * @param aGroup  The group of the changed preference.
+   * @param aValue  The new value of the changed preference.  Pass undefined to
+   *                indicate the preference's removal.
+   */
+  _onContentPrefChanged: function FullZoom__onContentPrefChanged(aGroup, aValue, aIsPrivate) {
+    if (this._isNextContentPrefChangeInternal) {
+      // Ignore changes that FullZoom itself makes.  This works because the
+      // content pref service calls callbacks before notifying observers, and it
+      // does both in the same turn of the event loop.
+      delete this._isNextContentPrefChangeInternal;
+      return;
+    }
+
+    let browser = gBrowser.selectedBrowser;
+    if (!browser.currentURI)
+      return;
+
+    let ctxt = this._loadContextFromBrowser(browser);
+    let domain = this._cps2.extractDomain(browser.currentURI.spec);
+    if (aGroup) {
+      if (aGroup == domain && ctxt.usePrivateBrowsing == aIsPrivate)
+        this._applyPrefToZoom(aValue, browser);
+      return;
+    }
+
+    this._globalValue = aValue === undefined ? aValue :
+                          this._ensureValid(aValue);
+
+    // If the current page doesn't have a site-specific preference, then its
+    // zoom should be set to the new global preference now that the global
+    // preference has changed.
+    let hasPref = false;
+    let token = this._getBrowserToken(browser);
+    this._cps2.getByDomainAndName(browser.currentURI.spec, this.name, ctxt, {
+      handleResult: function () { hasPref = true; },
+      handleCompletion: function () {
+        if (!hasPref && token.isCurrent)
+          this._applyPrefToZoom(undefined, browser);
+      }.bind(this)
+    });
+  },
+
+  // location change observer
+
+  /**
+   * Called when the location of a tab changes.
+   * When that happens, we need to update the current zoom level if appropriate.
+   *
+   * @param aURI
+   *        A URI object representing the new location.
+   * @param aIsTabSwitch
+   *        Whether this location change has happened because of a tab switch.
+   * @param aBrowser
+   *        (optional) browser object displaying the document
+   */
+  onLocationChange: function FullZoom_onLocationChange(aURI, aIsTabSwitch, aBrowser) {
+    let browser = aBrowser || gBrowser.selectedBrowser;
+
+    // If we haven't been initialized yet but receive an onLocationChange
+    // notification then let's store and replay it upon initialization.
+    if (this._initialLocations) {
+      this._initialLocations.set(browser, [aURI, aIsTabSwitch]);
+      return;
+    }
+
+    // Ignore all pending async zoom accesses in the browser.  Pending accesses
+    // that started before the location change will be prevented from applying
+    // to the new location.
+    this._ignorePendingZoomAccesses(browser);
+
+    if (!aURI || (aIsTabSwitch && !this.siteSpecific)) {
+      this._notifyOnLocationChange(browser);
+      return;
+    }
+
+    // Avoid the cps roundtrip and apply the default/global pref.
+    if (aURI.spec == "about:blank") {
+      this._applyPrefToZoom(undefined, browser,
+                            this._notifyOnLocationChange.bind(this, browser));
+      return;
+    }
+
+    // Media documents should always start at 1, and are not affected by prefs.
+    if (!aIsTabSwitch && browser.isSyntheticDocument) {
+      ZoomManager.setZoomForBrowser(browser, 1);
+      // _ignorePendingZoomAccesses already called above, so no need here.
+      this._notifyOnLocationChange(browser);
+      return;
+    }
+
+    // See if the zoom pref is cached.
+    let ctxt = this._loadContextFromBrowser(browser);
+    let pref = this._cps2.getCachedByDomainAndName(aURI.spec, this.name, ctxt);
+    if (pref) {
+      this._applyPrefToZoom(pref.value, browser,
+                            this._notifyOnLocationChange.bind(this, browser));
+      return;
+    }
+
+    // It's not cached, so we have to asynchronously fetch it.
+    let value = undefined;
+    let token = this._getBrowserToken(browser);
+    this._cps2.getByDomainAndName(aURI.spec, this.name, ctxt, {
+      handleResult: function (resultPref) { value = resultPref.value; },
+      handleCompletion: function () {
+        if (!token.isCurrent) {
+          this._notifyOnLocationChange(browser);
+          return;
+        }
+        this._applyPrefToZoom(value, browser,
+                              this._notifyOnLocationChange.bind(this, browser));
+      }.bind(this)
+    });
+  },
+
+  // update state of zoom type menu item
+
+  updateMenu: function FullZoom_updateMenu() {
+    var menuItem = document.getElementById("toggle_zoom");
+
+    menuItem.setAttribute("checked", !ZoomManager.useFullZoom);
+  },
+
+  // Setting & Pref Manipulation
+
+  /**
+   * Reduces the zoom level of the page in the current browser.
+   */
+  reduce: function FullZoom_reduce() {
+    ZoomManager.reduce();
+    let browser = gBrowser.selectedBrowser;
+    this._ignorePendingZoomAccesses(browser);
+    this._applyZoomToPref(browser);
+  },
+
+  /**
+   * Enlarges the zoom level of the page in the current browser.
+   */
+  enlarge: function FullZoom_enlarge() {
+    ZoomManager.enlarge();
+    let browser = gBrowser.selectedBrowser;
+    this._ignorePendingZoomAccesses(browser);
+    this._applyZoomToPref(browser);
+  },
+
+  /**
+   * Sets the zoom level for the given browser to the given floating
+   * point value, where 1 is the default zoom level.
+   */
+  setZoom: function (value, browser = gBrowser.selectedBrowser) {
+    ZoomManager.setZoomForBrowser(browser, value);
+    this._ignorePendingZoomAccesses(browser);
+    this._applyZoomToPref(browser);
+  },
+
+  /**
+   * Sets the zoom level of the page in the given browser to the global zoom
+   * level.
+   *
+   * @return A promise which resolves when the zoom reset has been applied.
+   */
+  reset: function FullZoom_reset(browser = gBrowser.selectedBrowser) {
+    let token = this._getBrowserToken(browser);
+    let result = this._getGlobalValue(browser).then(value => {
+      if (token.isCurrent) {
+        ZoomManager.setZoomForBrowser(browser, value === undefined ? 1 : value);
+        this._ignorePendingZoomAccesses(browser);
+        Services.obs.notifyObservers(browser, "browser-fullZoom:zoomReset", "");
+      }
+    });
+    this._removePref(browser);
+    return result;
+  },
+
+  /**
+   * Set the zoom level for a given browser.
+   *
+   * Per nsPresContext::setFullZoom, we can set the zoom to its current value
+   * without significant impact on performance, as the setting is only applied
+   * if it differs from the current setting.  In fact getting the zoom and then
+   * checking ourselves if it differs costs more.
+   *
+   * And perhaps we should always set the zoom even if it was more expensive,
+   * since nsDocumentViewer::SetTextZoom claims that child documents can have
+   * a different text zoom (although it would be unusual), and it implies that
+   * those child text zooms should get updated when the parent zoom gets set,
+   * and perhaps the same is true for full zoom
+   * (although nsDocumentViewer::SetFullZoom doesn't mention it).
+   *
+   * So when we apply new zoom values to the browser, we simply set the zoom.
+   * We don't check first to see if the new value is the same as the current
+   * one.
+   *
+   * @param aValue     The zoom level value.
+   * @param aBrowser   The zoom is set in this browser.  Required.
+   * @param aCallback  If given, it's asynchronously called when complete.
+   */
+  _applyPrefToZoom: function FullZoom__applyPrefToZoom(aValue, aBrowser, aCallback) {
+    if (!this.siteSpecific || gInPrintPreviewMode) {
+      this._executeSoon(aCallback);
+      return;
+    }
+
+    // The browser is sometimes half-destroyed because this method is called
+    // by content pref service callbacks, which themselves can be called at any
+    // time, even after browsers are closed.
+    if (!aBrowser.parentNode || aBrowser.isSyntheticDocument) {
+      this._executeSoon(aCallback);
+      return;
+    }
+
+    if (aValue !== undefined) {
+      ZoomManager.setZoomForBrowser(aBrowser, this._ensureValid(aValue));
+      this._ignorePendingZoomAccesses(aBrowser);
+      this._executeSoon(aCallback);
+      return;
+    }
+
+    let token = this._getBrowserToken(aBrowser);
+    this._getGlobalValue(aBrowser).then(value => {
+      if (token.isCurrent) {
+        ZoomManager.setZoomForBrowser(aBrowser, value === undefined ? 1 : value);
+        this._ignorePendingZoomAccesses(aBrowser);
+      }
+      this._executeSoon(aCallback);
+    });
+  },
+
+  /**
+   * Saves the zoom level of the page in the given browser to the content
+   * prefs store.
+   *
+   * @param browser  The zoom of this browser will be saved.  Required.
+   */
+  _applyZoomToPref: function FullZoom__applyZoomToPref(browser) {
+    Services.obs.notifyObservers(browser, "browser-fullZoom:zoomChange", "");
+    if (!this.siteSpecific ||
+        gInPrintPreviewMode ||
+        browser.isSyntheticDocument)
+      return;
+
+    this._cps2.set(browser.currentURI.spec, this.name,
+                   ZoomManager.getZoomForBrowser(browser),
+                   this._loadContextFromBrowser(browser), {
+      handleCompletion: function () {
+        this._isNextContentPrefChangeInternal = true;
+      }.bind(this),
+    });
+  },
+
+  /**
+   * Removes from the content prefs store the zoom level of the given browser.
+   *
+   * @param browser  The zoom of this browser will be removed.  Required.
+   */
+  _removePref: function FullZoom__removePref(browser) {
+    Services.obs.notifyObservers(browser, "browser-fullZoom:zoomReset", "");
+    if (browser.isSyntheticDocument)
+      return;
+    let ctxt = this._loadContextFromBrowser(browser);
+    this._cps2.removeByDomainAndName(browser.currentURI.spec, this.name, ctxt, {
+      handleCompletion: function () {
+        this._isNextContentPrefChangeInternal = true;
+      }.bind(this),
+    });
+  },
+
+  // Utilities
+
+  /**
+   * Returns the zoom change token of the given browser.  Asynchronous
+   * operations that access the given browser's zoom should use this method to
+   * capture the token before starting and use token.isCurrent to determine if
+   * it's safe to access the zoom when done.  If token.isCurrent is false, then
+   * after the async operation started, either the browser's zoom was changed or
+   * the browser was destroyed, and depending on what the operation is doing, it
+   * may no longer be safe to set and get its zoom.
+   *
+   * @param browser  The token of this browser will be returned.
+   * @return  An object with an "isCurrent" getter.
+   */
+  _getBrowserToken: function FullZoom__getBrowserToken(browser) {
+    let map = this._browserTokenMap;
+    if (!map.has(browser))
+      map.set(browser, 0);
+    return {
+      token: map.get(browser),
+      get isCurrent() {
+        // At this point, the browser may have been destructed and unbound but
+        // its outer ID not removed from the map because outer-window-destroyed
+        // hasn't been received yet.  In that case, the browser is unusable, it
+        // has no properties, so return false.  Check for this case by getting a
+        // property, say, docShell.
+        return map.get(browser) === this.token && browser.parentNode;
+      },
+    };
+  },
+
+  /**
+   * Returns the browser that the supplied zoom event is associated with.
+   * @param event  The ZoomChangeUsingMouseWheel event.
+   * @return  The associated browser element, if one exists, otherwise null.
+   */
+  _getTargetedBrowser: function FullZoom__getTargetedBrowser(event) {
+    let target = event.originalTarget;
+
+    // With remote content browsers, the event's target is the browser
+    // we're looking for.
+    const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+    if (target instanceof window.XULElement &&
+        target.localName == "browser" &&
+        target.namespaceURI == XUL_NS)
+      return target;
+
+    // With in-process content browsers, the event's target is the content
+    // document.
+    if (target.nodeType == Node.DOCUMENT_NODE)
+      return gBrowser.getBrowserForDocument(target);
+
+    throw new Error("Unexpected ZoomChangeUsingMouseWheel event source");
+  },
+
+  /**
+   * Increments the zoom change token for the given browser so that pending
+   * async operations know that it may be unsafe to access they zoom when they
+   * finish.
+   *
+   * @param browser  Pending accesses in this browser will be ignored.
+   */
+  _ignorePendingZoomAccesses: function FullZoom__ignorePendingZoomAccesses(browser) {
+    let map = this._browserTokenMap;
+    map.set(browser, (map.get(browser) || 0) + 1);
+  },
+
+  _ensureValid: function FullZoom__ensureValid(aValue) {
+    // Note that undefined is a valid value for aValue that indicates a known-
+    // not-to-exist value.
+    if (isNaN(aValue))
+      return 1;
+
+    if (aValue < ZoomManager.MIN)
+      return ZoomManager.MIN;
+
+    if (aValue > ZoomManager.MAX)
+      return ZoomManager.MAX;
+
+    return aValue;
+  },
+
+  /**
+   * Gets the global browser.content.full-zoom content preference.
+   *
+   * @param browser   The browser pertaining to the zoom.
+   * @returns Promise<prefValue>
+   *                  Resolves to the preference value when done.
+   */
+  _getGlobalValue: function FullZoom__getGlobalValue(browser) {
+    // * !("_globalValue" in this) => global value not yet cached.
+    // * this._globalValue === undefined => global value known not to exist.
+    // * Otherwise, this._globalValue is a number, the global value.
+    return new Promise(resolve => {
+      if ("_globalValue" in this) {
+        resolve(this._globalValue);
+        return;
+      }
+      let value = undefined;
+      this._cps2.getGlobal(this.name, this._loadContextFromBrowser(browser), {
+        handleResult: function (pref) { value = pref.value; },
+        handleCompletion: (reason) => {
+          this._globalValue = this._ensureValid(value);
+          resolve(this._globalValue);
+        }
+      });
+    });
+  },
+
+  /**
+   * Gets the load context from the given Browser.
+   *
+   * @param Browser  The Browser whose load context will be returned.
+   * @return        The nsILoadContext of the given Browser.
+   */
+  _loadContextFromBrowser: function FullZoom__loadContextFromBrowser(browser) {
+    return browser.loadContext;
+  },
+
+  /**
+   * Asynchronously broadcasts "browser-fullZoom:location-change" so that
+   * listeners can be notified when the zoom levels on those pages change.
+   * The notification is always asynchronous so that observers are guaranteed a
+   * consistent behavior.
+   */
+  _notifyOnLocationChange: function FullZoom__notifyOnLocationChange(browser) {
+    this._executeSoon(function () {
+      Services.obs.notifyObservers(browser, "browser-fullZoom:location-change", "");
+    });
+  },
+
+  _executeSoon: function FullZoom__executeSoon(callback) {
+    if (!callback)
+      return;
+    Services.tm.mainThread.dispatch(callback, Ci.nsIThread.DISPATCH_NORMAL);
+  },
+};
diff --git a/webbrowser/base/content/browser-gestureSupport.js b/webbrowser/base/content/browser-gestureSupport.js
new file mode 100644
index 0000000..13eb71b
--- /dev/null
+++ b/webbrowser/base/content/browser-gestureSupport.js
@@ -0,0 +1,1059 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Simple gestures support
+//
+// As per bug #412486, web content must not be allowed to receive any
+// simple gesture events.  Multi-touch gesture APIs are in their
+// infancy and we do NOT want to be forced into supporting an API that
+// will probably have to change in the future.  (The current Mac OS X
+// API is undocumented and was reverse-engineered.)  Until support is
+// implemented in the event dispatcher to keep these events as
+// chrome-only, we must listen for the simple gesture events during
+// the capturing phase and call stopPropagation on every event.
+
+var gGestureSupport = {
+  _currentRotation: 0,
+  _lastRotateDelta: 0,
+  _rotateMomentumThreshold: .75,
+
+  /**
+   * Add or remove mouse gesture event listeners
+   *
+   * @param aAddListener
+   *        True to add/init listeners and false to remove/uninit
+   */
+  init: function GS_init(aAddListener) {
+    // Bug 863514 - Make gesture support work in electrolysis
+    if (gMultiProcessBrowser)
+      return;
+
+    const gestureEvents = ["SwipeGestureStart",
+      "SwipeGestureUpdate", "SwipeGestureEnd", "SwipeGesture",
+      "MagnifyGestureStart", "MagnifyGestureUpdate", "MagnifyGesture",
+      "RotateGestureStart", "RotateGestureUpdate", "RotateGesture",
+      "TapGesture", "PressTapGesture"];
+
+    let addRemove = aAddListener ? window.addEventListener :
+      window.removeEventListener;
+
+    gestureEvents.forEach(function (event) addRemove("Moz" + event, this, true),
+                          this);
+  },
+
+  /**
+   * Dispatch events based on the type of mouse gesture event. For now, make
+   * sure to stop propagation of every gesture event so that web content cannot
+   * receive gesture events.
+   *
+   * @param aEvent
+   *        The gesture event to handle
+   */
+  handleEvent: function GS_handleEvent(aEvent) {
+    if (!Services.prefs.getBoolPref(
+           "dom.debug.propagate_gesture_events_through_content")) {
+      aEvent.stopPropagation();
+    }
+
+    // Create a preference object with some defaults
+    let def = function(aThreshold, aLatched)
+      ({ threshold: aThreshold, latched: !!aLatched });
+
+    switch (aEvent.type) {
+      case "MozSwipeGestureStart":
+        aEvent.preventDefault();
+        this._setupSwipeGesture(aEvent);
+        break;
+      case "MozSwipeGestureUpdate":
+        aEvent.preventDefault();
+        this._doUpdate(aEvent);
+        break;
+      case "MozSwipeGestureEnd":
+        aEvent.preventDefault();
+        this._doEnd(aEvent);
+        break;
+      case "MozSwipeGesture":
+        aEvent.preventDefault();
+        this.onSwipe(aEvent);
+        break;
+      case "MozMagnifyGestureStart":
+        aEvent.preventDefault();
+#ifdef XP_WIN
+        this._setupGesture(aEvent, "pinch", def(25, 0), "out", "in");
+#else
+        this._setupGesture(aEvent, "pinch", def(150, 1), "out", "in");
+#endif
+        break;
+      case "MozRotateGestureStart":
+        aEvent.preventDefault();
+        this._setupGesture(aEvent, "twist", def(25, 0), "right", "left");
+        break;
+      case "MozMagnifyGestureUpdate":
+      case "MozRotateGestureUpdate":
+        aEvent.preventDefault();
+        this._doUpdate(aEvent);
+        break;
+      case "MozTapGesture":
+        aEvent.preventDefault();
+        this._doAction(aEvent, ["tap"]);
+        break;
+      case "MozRotateGesture":
+        aEvent.preventDefault();
+        this._doAction(aEvent, ["twist", "end"]);
+        break;
+      /* case "MozPressTapGesture":
+        break; */
+    }
+  },
+
+  /**
+   * Called at the start of "pinch" and "twist" gestures to setup all of the
+   * information needed to process the gesture
+   *
+   * @param aEvent
+   *        The continual motion start event to handle
+   * @param aGesture
+   *        Name of the gesture to handle
+   * @param aPref
+   *        Preference object with the names of preferences and defaults
+   * @param aInc
+   *        Command to trigger for increasing motion (without gesture name)
+   * @param aDec
+   *        Command to trigger for decreasing motion (without gesture name)
+   */
+  _setupGesture: function GS__setupGesture(aEvent, aGesture, aPref, aInc, aDec) {
+    // Try to load user-set values from preferences
+    for (let [pref, def] in Iterator(aPref))
+      aPref[pref] = this._getPref(aGesture + "." + pref, def);
+
+    // Keep track of the total deltas and latching behavior
+    let offset = 0;
+    let latchDir = aEvent.delta > 0 ? 1 : -1;
+    let isLatched = false;
+
+    // Create the update function here to capture closure state
+    this._doUpdate = function GS__doUpdate(aEvent) {
+      // Update the offset with new event data
+      offset += aEvent.delta;
+
+      // Check if the cumulative deltas exceed the threshold
+      if (Math.abs(offset) > aPref["threshold"]) {
+        // Trigger the action if we don't care about latching; otherwise, make
+        // sure either we're not latched and going the same direction of the
+        // initial motion; or we're latched and going the opposite way
+        let sameDir = (latchDir ^ offset) >= 0;
+        if (!aPref["latched"] || (isLatched ^ sameDir)) {
+          this._doAction(aEvent, [aGesture, offset > 0 ? aInc : aDec]);
+
+          // We must be getting latched or leaving it, so just toggle
+          isLatched = !isLatched;
+        }
+
+        // Reset motion counter to prepare for more of the same gesture
+        offset = 0;
+      }
+    };
+
+    // The start event also contains deltas, so handle an update right away
+    this._doUpdate(aEvent);
+  },
+
+  /**
+   * Checks whether a swipe gesture event can navigate the browser history or
+   * not.
+   *
+   * @param aEvent
+   *        The swipe gesture event.
+   * @return true if the swipe event may navigate the history, false othwerwise.
+   */
+  _swipeNavigatesHistory: function GS__swipeNavigatesHistory(aEvent) {
+    return this._getCommand(aEvent, ["swipe", "left"])
+              == "Browser:BackOrBackDuplicate" &&
+           this._getCommand(aEvent, ["swipe", "right"])
+              == "Browser:ForwardOrForwardDuplicate";
+  },
+
+  /**
+   * Sets up the history swipe animations for a swipe gesture event, if enabled.
+   *
+   * @param aEvent
+   *        The swipe gesture start event.
+   */
+  _setupSwipeGesture: function GS__setupSwipeGesture(aEvent) {
+    if (!this._swipeNavigatesHistory(aEvent))
+      return;
+
+    let canGoBack = gHistorySwipeAnimation.canGoBack();
+    let canGoForward = gHistorySwipeAnimation.canGoForward();
+    let isLTR = gHistorySwipeAnimation.isLTR;
+
+    if (canGoBack)
+      aEvent.allowedDirections |= isLTR ? aEvent.DIRECTION_LEFT :
+                                          aEvent.DIRECTION_RIGHT;
+    if (canGoForward)
+      aEvent.allowedDirections |= isLTR ? aEvent.DIRECTION_RIGHT :
+                                          aEvent.DIRECTION_LEFT;
+
+    gHistorySwipeAnimation.startAnimation();
+
+    this._doUpdate = function GS__doUpdate(aEvent) {
+      gHistorySwipeAnimation.updateAnimation(aEvent.delta);
+    };
+
+    this._doEnd = function GS__doEnd(aEvent) {
+      gHistorySwipeAnimation.swipeEndEventReceived();
+
+      this._doUpdate = function (aEvent) {};
+      this._doEnd = function (aEvent) {};
+    }
+  },
+
+  /**
+   * Generator producing the powerset of the input array where the first result
+   * is the complete set and the last result (before StopIteration) is empty.
+   *
+   * @param aArray
+   *        Source array containing any number of elements
+   * @yield Array that is a subset of the input array from full set to empty
+   */
+  _power: function GS__power(aArray) {
+    // Create a bitmask based on the length of the array
+    let num = 1 << aArray.length;
+    while (--num >= 0) {
+      // Only select array elements where the current bit is set
+      yield aArray.reduce(function (aPrev, aCurr, aIndex) {
+        if (num & 1 << aIndex)
+          aPrev.push(aCurr);
+        return aPrev;
+      }, []);
+    }
+  },
+
+  /**
+   * Determine what action to do for the gesture based on which keys are
+   * pressed and which commands are set, and execute the command.
+   *
+   * @param aEvent
+   *        The original gesture event to convert into a fake click event
+   * @param aGesture
+   *        Array of gesture name parts (to be joined by periods)
+   * @return Name of the executed command. Returns null if no command is
+   *         found.
+   */
+  _doAction: function GS__doAction(aEvent, aGesture) {
+    let command = this._getCommand(aEvent, aGesture);
+    return command && this._doCommand(aEvent, command);
+  },
+
+  /**
+   * Determine what action to do for the gesture based on which keys are
+   * pressed and which commands are set
+   *
+   * @param aEvent
+   *        The original gesture event to convert into a fake click event
+   * @param aGesture
+   *        Array of gesture name parts (to be joined by periods)
+   */
+  _getCommand: function GS__getCommand(aEvent, aGesture) {
+    // Create an array of pressed keys in a fixed order so that a command for
+    // "meta" is preferred over "ctrl" when both buttons are pressed (and a
+    // command for both don't exist)
+    let keyCombos = [];
+    ["shift", "alt", "ctrl", "meta"].forEach(function (key) {
+      if (aEvent[key + "Key"])
+        keyCombos.push(key);
+    });
+
+    // Try each combination of key presses in decreasing order for commands
+    for (let subCombo of this._power(keyCombos)) {
+      // Convert a gesture and pressed keys into the corresponding command
+      // action where the preference has the gesture before "shift" before
+      // "alt" before "ctrl" before "meta" all separated by periods
+      let command;
+      try {
+        command = this._getPref(aGesture.concat(subCombo).join("."));
+      } catch (e) {}
+
+      if (command)
+        return command;
+    }
+    return null;
+  },
+
+  /**
+   * Execute the specified command.
+   *
+   * @param aEvent
+   *        The original gesture event to convert into a fake click event
+   * @param aCommand
+   *        Name of the command found for the event's keys and gesture.
+   */
+  _doCommand: function GS__doCommand(aEvent, aCommand) {
+    let node = document.getElementById(aCommand);
+    if (node) {
+      if (node.getAttribute("disabled") != "true") {
+        let cmdEvent = document.createEvent("xulcommandevent");
+        cmdEvent.initCommandEvent("command", true, true, window, 0,
+                                  aEvent.ctrlKey, aEvent.altKey,
+                                  aEvent.shiftKey, aEvent.metaKey, aEvent);
+        node.dispatchEvent(cmdEvent);
+      }
+
+    }
+    else {
+      goDoCommand(aCommand);
+    }
+  },
+
+  /**
+   * Handle continual motion events.  This function will be set by
+   * _setupGesture or _setupSwipe.
+   *
+   * @param aEvent
+   *        The continual motion update event to handle
+   */
+  _doUpdate: function(aEvent) {},
+
+  /**
+   * Handle gesture end events.  This function will be set by _setupSwipe.
+   *
+   * @param aEvent
+   *        The gesture end event to handle
+   */
+  _doEnd: function(aEvent) {},
+
+  /**
+   * Convert the swipe gesture into a browser action based on the direction.
+   *
+   * @param aEvent
+   *        The swipe event to handle
+   */
+  onSwipe: function GS_onSwipe(aEvent) {
+    // Figure out which one (and only one) direction was triggered
+    for (let dir of ["UP", "RIGHT", "DOWN", "LEFT"]) {
+      if (aEvent.direction == aEvent["DIRECTION_" + dir]) {
+        this._coordinateSwipeEventWithAnimation(aEvent, dir);
+        break;
+      }
+    }
+  },
+
+  /**
+   * Process a swipe event based on the given direction.
+   *
+   * @param aEvent
+   *        The swipe event to handle
+   * @param aDir
+   *        The direction for the swipe event
+   */
+  processSwipeEvent: function GS_processSwipeEvent(aEvent, aDir) {
+    this._doAction(aEvent, ["swipe", aDir.toLowerCase()]);
+  },
+
+  /**
+   * Coordinates the swipe event with the swipe animation, if any.
+   * If an animation is currently running, the swipe event will be
+   * processed once the animation stops. This will guarantee a fluid
+   * motion of the animation.
+   *
+   * @param aEvent
+   *        The swipe event to handle
+   * @param aDir
+   *        The direction for the swipe event
+   */
+  _coordinateSwipeEventWithAnimation:
+  function GS__coordinateSwipeEventWithAnimation(aEvent, aDir) {
+    if ((gHistorySwipeAnimation.isAnimationRunning()) &&
+        (aDir == "RIGHT" || aDir == "LEFT")) {
+      gHistorySwipeAnimation.processSwipeEvent(aEvent, aDir);
+    }
+    else {
+      this.processSwipeEvent(aEvent, aDir);
+    }
+  },
+
+  /**
+   * Get a gesture preference or use a default if it doesn't exist
+   *
+   * @param aPref
+   *        Name of the preference to load under the gesture branch
+   * @param aDef
+   *        Default value if the preference doesn't exist
+   */
+  _getPref: function GS__getPref(aPref, aDef) {
+    // Preferences branch under which all gestures preferences are stored
+    const branch = "browser.gesture.";
+
+    try {
+      // Determine what type of data to load based on default value's type
+      let type = typeof aDef;
+      let getFunc = "get" + (type == "boolean" ? "Bool" :
+                             type == "number" ? "Int" : "Char") + "Pref";
+      return gPrefService[getFunc](branch + aPref);
+    }
+    catch (e) {
+      return aDef;
+    }
+  },
+
+  /**
+   * Perform rotation for ImageDocuments
+   *
+   * @param aEvent
+   *        The MozRotateGestureUpdate event triggering this call
+   */
+  rotate: function(aEvent) {
+    if (!(content.document instanceof ImageDocument))
+      return;
+
+    let contentElement = content.document.body.firstElementChild;
+    if (!contentElement)
+      return;
+    // If we're currently snapping, cancel that snap
+    if (contentElement.classList.contains("completeRotation"))
+      this._clearCompleteRotation();
+
+    this.rotation = Math.round(this.rotation + aEvent.delta);
+    contentElement.style.transform = "rotate(" + this.rotation + "deg)";
+    this._lastRotateDelta = aEvent.delta;
+  },
+
+  /**
+   * Perform a rotation end for ImageDocuments
+   */
+  rotateEnd: function() {
+    if (!(content.document instanceof ImageDocument))
+      return;
+
+    let contentElement = content.document.body.firstElementChild;
+    if (!contentElement)
+      return;
+
+    let transitionRotation = 0;
+
+    // The reason that 360 is allowed here is because when rotating between
+    // 315 and 360, setting rotate(0deg) will cause it to rotate the wrong
+    // direction around--spinning wildly.
+    if (this.rotation <= 45)
+      transitionRotation = 0;
+    else if (this.rotation > 45 && this.rotation <= 135)
+      transitionRotation = 90;
+    else if (this.rotation > 135 && this.rotation <= 225)
+      transitionRotation = 180;
+    else if (this.rotation > 225 && this.rotation <= 315)
+      transitionRotation = 270;
+    else
+      transitionRotation = 360;
+
+    // If we're going fast enough, and we didn't already snap ahead of rotation,
+    // then snap ahead of rotation to simulate momentum
+    if (this._lastRotateDelta > this._rotateMomentumThreshold &&
+        this.rotation > transitionRotation)
+      transitionRotation += 90;
+    else if (this._lastRotateDelta < -1 * this._rotateMomentumThreshold &&
+             this.rotation < transitionRotation)
+      transitionRotation -= 90;
+
+    // Only add the completeRotation class if it is is necessary
+    if (transitionRotation != this.rotation) {
+      contentElement.classList.add("completeRotation");
+      contentElement.addEventListener("transitionend", this._clearCompleteRotation);
+    }
+
+    contentElement.style.transform = "rotate(" + transitionRotation + "deg)";
+    this.rotation = transitionRotation;
+  },
+
+  /**
+   * Gets the current rotation for the ImageDocument
+   */
+  get rotation() {
+    return this._currentRotation;
+  },
+
+  /**
+   * Sets the current rotation for the ImageDocument
+   *
+   * @param aVal
+   *        The new value to take.  Can be any value, but it will be bounded to
+   *        0 inclusive to 360 exclusive.
+   */
+  set rotation(aVal) {
+    this._currentRotation = aVal % 360;
+    if (this._currentRotation < 0)
+      this._currentRotation += 360;
+    return this._currentRotation;
+  },
+
+  /**
+   * When the location/tab changes, need to reload the current rotation for the
+   * image
+   */
+  restoreRotationState: function() {
+    // Bug 863514 - Make gesture support work in electrolysis
+    if (gMultiProcessBrowser)
+      return;
+
+    if (!(content.document instanceof ImageDocument))
+      return;
+
+    let contentElement = content.document.body.firstElementChild;
+    let transformValue = content.window.getComputedStyle(contentElement, null)
+                                       .transform;
+
+    if (transformValue == "none") {
+      this.rotation = 0;
+      return;
+    }
+
+    // transformValue is a rotation matrix--split it and do mathemagic to
+    // obtain the real rotation value
+    transformValue = transformValue.split("(")[1]
+                                   .split(")")[0]
+                                   .split(",");
+    this.rotation = Math.round(Math.atan2(transformValue[1], transformValue[0]) *
+                               (180 / Math.PI));
+  },
+
+  /**
+   * Removes the transition rule by removing the completeRotation class
+   */
+  _clearCompleteRotation: function() {
+    let contentElement = content.document &&
+                         content.document instanceof ImageDocument &&
+                         content.document.body &&
+                         content.document.body.firstElementChild;
+    if (!contentElement)
+      return;
+    contentElement.classList.remove("completeRotation");
+    contentElement.removeEventListener("transitionend", this._clearCompleteRotation);
+  },
+};
+
+// History Swipe Animation Support (bug 678392)
+var gHistorySwipeAnimation = {
+
+  active: false,
+  isLTR: false,
+
+  /**
+   * Initializes the support for history swipe animations, if it is supported
+   * by the platform/configuration.
+   */
+  init: function HSA_init() {
+    if (!this._isSupported())
+      return;
+
+    this.active = false;
+    this.isLTR = document.documentElement.mozMatchesSelector(
+                                            ":-moz-locale-dir(ltr)");
+    this._trackedSnapshots = [];
+    this._historyIndex = -1;
+    this._boxWidth = -1;
+    this._maxSnapshots = this._getMaxSnapshots();
+    this._lastSwipeDir = "";
+
+    // We only want to activate history swipe animations if we store snapshots.
+    // If we don't store any, we handle horizontal swipes without animations.
+    if (this._maxSnapshots > 0) {
+      this.active = true;
+      gBrowser.addEventListener("pagehide", this, false);
+      gBrowser.addEventListener("pageshow", this, false);
+      gBrowser.addEventListener("popstate", this, false);
+      gBrowser.tabContainer.addEventListener("TabClose", this, false);
+    }
+  },
+
+  /**
+   * Uninitializes the support for history swipe animations.
+   */
+  uninit: function HSA_uninit() {
+    gBrowser.removeEventListener("pagehide", this, false);
+    gBrowser.removeEventListener("pageshow", this, false);
+    gBrowser.removeEventListener("popstate", this, false);
+    gBrowser.tabContainer.removeEventListener("TabClose", this, false);
+
+    this.active = false;
+    this.isLTR = false;
+  },
+
+  /**
+   * Starts the swipe animation and handles fast swiping (i.e. a swipe animation
+   * is already in progress when a new one is initiated).
+   */
+  startAnimation: function HSA_startAnimation() {
+    if (this.isAnimationRunning()) {
+      gBrowser.stop();
+      this._lastSwipeDir = "RELOAD"; // just ensure that != ""
+      this._canGoBack = this.canGoBack();
+      this._canGoForward = this.canGoForward();
+      this._handleFastSwiping();
+    }
+    else {
+      this._historyIndex = gBrowser.webNavigation.sessionHistory.index;
+      this._canGoBack = this.canGoBack();
+      this._canGoForward = this.canGoForward();
+      if (this.active) {
+        this._takeSnapshot();
+        this._installPrevAndNextSnapshots();
+        this._addBoxes();
+        this._lastSwipeDir = "";
+      }
+    }
+    this.updateAnimation(0);
+  },
+
+  /**
+   * Stops the swipe animation.
+   */
+  stopAnimation: function HSA_stopAnimation() {
+    gHistorySwipeAnimation._removeBoxes();
+  },
+
+  /**
+   * Updates the animation between two pages in history.
+   *
+   * @param aVal
+   *        A floating point value that represents the progress of the
+   *        swipe gesture.
+   */
+  updateAnimation: function HSA_updateAnimation(aVal) {
+    if (!this.isAnimationRunning())
+      return;
+
+    if ((aVal >= 0 && this.isLTR) ||
+        (aVal <= 0 && !this.isLTR)) {
+      if (aVal > 1)
+        aVal = 1; // Cap value to avoid sliding the page further than allowed.
+
+      if (this._canGoBack)
+        this._prevBox.collapsed = false;
+      else
+        this._prevBox.collapsed = true;
+
+      // The current page is pushed to the right (LTR) or left (RTL),
+      // the intention is to go back.
+      // If there is a page to go back to, it should show in the background.
+      this._positionBox(this._curBox, aVal);
+
+      // The forward page should be pushed offscreen all the way to the right.
+      this._positionBox(this._nextBox, 1);
+    }
+    else {
+      if (aVal < -1)
+        aVal = -1; // Cap value to avoid sliding the page further than allowed.
+
+      // The intention is to go forward. If there is a page to go forward to,
+      // it should slide in from the right (LTR) or left (RTL).
+      // Otherwise, the current page should slide to the left (LTR) or
+      // right (RTL) and the backdrop should appear in the background.
+      // For the backdrop to be visible in that case, the previous page needs
+      // to be hidden (if it exists).
+      if (this._canGoForward) {
+        let offset = this.isLTR ? 1 : -1;
+        this._positionBox(this._curBox, 0);
+        this._positionBox(this._nextBox, offset + aVal); // aVal is negative
+      }
+      else {
+        this._prevBox.collapsed = true;
+        this._positionBox(this._curBox, aVal);
+      }
+    }
+  },
+
+  /**
+   * Event handler for events relevant to the history swipe animation.
+   *
+   * @param aEvent
+   *        An event to process.
+   */
+  handleEvent: function HSA_handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "TabClose":
+        let browser = gBrowser.getBrowserForTab(aEvent.target);
+        this._removeTrackedSnapshot(-1, browser);
+        break;
+      case "pageshow":
+      case "popstate":
+        if (this.isAnimationRunning()) {
+          if (aEvent.target != gBrowser.selectedBrowser.contentDocument)
+            break;
+          this.stopAnimation();
+        }
+        this._historyIndex = gBrowser.webNavigation.sessionHistory.index;
+        break;
+      case "pagehide":
+        if (aEvent.target == gBrowser.selectedBrowser.contentDocument) {
+          // Take a snapshot of a page whenever it's about to be navigated away
+          // from.
+          this._takeSnapshot();
+        }
+        break;
+    }
+  },
+
+  /**
+   * Checks whether the history swipe animation is currently running or not.
+   *
+   * @return true if the animation is currently running, false otherwise.
+   */
+  isAnimationRunning: function HSA_isAnimationRunning() {
+    return !!this._container;
+  },
+
+  /**
+   * Process a swipe event based on the given direction.
+   *
+   * @param aEvent
+   *        The swipe event to handle
+   * @param aDir
+   *        The direction for the swipe event
+   */
+  processSwipeEvent: function HSA_processSwipeEvent(aEvent, aDir) {
+    if (aDir == "RIGHT")
+      this._historyIndex += this.isLTR ? 1 : -1;
+    else if (aDir == "LEFT")
+      this._historyIndex += this.isLTR ? -1 : 1;
+    else
+      return;
+    this._lastSwipeDir = aDir;
+  },
+
+  /**
+   * Checks if there is a page in the browser history to go back to.
+   *
+   * @return true if there is a previous page in history, false otherwise.
+   */
+  canGoBack: function HSA_canGoBack() {
+    if (this.isAnimationRunning())
+      return this._doesIndexExistInHistory(this._historyIndex - 1);
+    return gBrowser.webNavigation.canGoBack;
+  },
+
+  /**
+   * Checks if there is a page in the browser history to go forward to.
+   *
+   * @return true if there is a next page in history, false otherwise.
+   */
+  canGoForward: function HSA_canGoForward() {
+    if (this.isAnimationRunning())
+      return this._doesIndexExistInHistory(this._historyIndex + 1);
+    return gBrowser.webNavigation.canGoForward;
+  },
+
+  /**
+   * Used to notify the history swipe animation that the OS sent a swipe end
+   * event and that we should navigate to the page that the user swiped to, if
+   * any. This will also result in the animation overlay to be torn down.
+   */
+  swipeEndEventReceived: function HSA_swipeEndEventReceived() {
+    if (this._lastSwipeDir != "")
+      this._navigateToHistoryIndex();
+    else
+      this.stopAnimation();
+  },
+
+  /**
+   * Checks whether a particular index exists in the browser history or not.
+   *
+   * @param aIndex
+   *        The index to check for availability for in the history.
+   * @return true if the index exists in the browser history, false otherwise.
+   */
+  _doesIndexExistInHistory: function HSA__doesIndexExistInHistory(aIndex) {
+    try {
+      gBrowser.webNavigation.sessionHistory.getEntryAtIndex(aIndex, false);
+    }
+    catch(ex) {
+      return false;
+    }
+    return true;
+  },
+
+  /**
+   * Navigates to the index in history that is currently being tracked by
+   * |this|.
+   */
+  _navigateToHistoryIndex: function HSA__navigateToHistoryIndex() {
+    if (this._doesIndexExistInHistory(this._historyIndex)) {
+      gBrowser.webNavigation.gotoIndex(this._historyIndex);
+    }
+  },
+
+  /**
+   * Checks to see if history swipe animations are supported by this
+   * platform/configuration.
+   *
+   * return true if supported, false otherwise.
+   */
+  _isSupported: function HSA__isSupported() {
+    return window.matchMedia("(-moz-swipe-animation-enabled)").matches;
+  },
+
+  /**
+   * Handle fast swiping (i.e. a swipe animation is already in
+   * progress when a new one is initiated). This will swap out the snapshots
+   * used in the previous animation with the appropriate new ones.
+   */
+  _handleFastSwiping: function HSA__handleFastSwiping() {
+    this._installCurrentPageSnapshot(null);
+    this._installPrevAndNextSnapshots();
+  },
+
+  /**
+   * Adds the boxes that contain the snapshots used during the swipe animation.
+   */
+  _addBoxes: function HSA__addBoxes() {
+    let browserStack =
+      document.getAnonymousElementByAttribute(gBrowser.getNotificationBox(),
+                                              "class", "browserStack");
+    this._container = this._createElement("historySwipeAnimationContainer",
+                                          "stack");
+    browserStack.appendChild(this._container);
+
+    this._prevBox = this._createElement("historySwipeAnimationPreviousPage",
+                                        "box");
+    this._container.appendChild(this._prevBox);
+
+    this._curBox = this._createElement("historySwipeAnimationCurrentPage",
+                                       "box");
+    this._container.appendChild(this._curBox);
+
+    this._nextBox = this._createElement("historySwipeAnimationNextPage",
+                                        "box");
+    this._container.appendChild(this._nextBox);
+
+    this._boxWidth = this._curBox.getBoundingClientRect().width; // cache width
+  },
+
+  /**
+   * Removes the boxes.
+   */
+  _removeBoxes: function HSA__removeBoxes() {
+    this._curBox = null;
+    this._prevBox = null;
+    this._nextBox = null;
+    if (this._container)
+      this._container.parentNode.removeChild(this._container);
+    this._container = null;
+    this._boxWidth = -1;
+  },
+
+  /**
+   * Creates an element with a given identifier and tag name.
+   *
+   * @param aID
+   *        An identifier to create the element with.
+   * @param aTagName
+   *        The name of the tag to create the element for.
+   * @return the newly created element.
+   */
+  _createElement: function HSA__createElement(aID, aTagName) {
+    let XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+    let element = document.createElementNS(XULNS, aTagName);
+    element.id = aID;
+    return element;
+  },
+
+  /**
+   * Moves a given box to a given X coordinate position.
+   *
+   * @param aBox
+   *        The box element to position.
+   * @param aPosition
+   *        The position (in X coordinates) to move the box element to.
+   */
+  _positionBox: function HSA__positionBox(aBox, aPosition) {
+    aBox.style.transform = "translateX(" + this._boxWidth * aPosition + "px)";
+  },
+
+  /**
+   * Takes a snapshot of the page the browser is currently on.
+   */
+  _takeSnapshot: function HSA__takeSnapshot() {
+    if ((this._maxSnapshots < 1) ||
+        (gBrowser.webNavigation.sessionHistory.index < 0))
+      return;
+
+    let browser = gBrowser.selectedBrowser;
+    let r = browser.getBoundingClientRect();
+    let canvas = document.createElementNS("http://www.w3.org/1999/xhtml",
+                                          "canvas");
+    canvas.mozOpaque = true;
+    canvas.width = r.width;
+    canvas.height = r.height;
+    let ctx = canvas.getContext("2d");
+    let zoom = browser.markupDocumentViewer.fullZoom;
+    ctx.scale(zoom, zoom);
+    ctx.drawWindow(browser.contentWindow, 0, 0, r.width, r.height, "white",
+                   ctx.DRAWWINDOW_DO_NOT_FLUSH | ctx.DRAWWINDOW_DRAW_VIEW |
+                   ctx.DRAWWINDOW_ASYNC_DECODE_IMAGES |
+                   ctx.DRAWWINDOW_USE_WIDGET_LAYERS);
+
+    this._installCurrentPageSnapshot(canvas);
+    this._assignSnapshotToCurrentBrowser(canvas);
+  },
+
+  /**
+   * Retrieves the maximum number of snapshots that should be kept in memory.
+   * This limit is a global limit and is valid across all open tabs.
+   */
+  _getMaxSnapshots: function HSA__getMaxSnapshots() {
+    return gPrefService.getIntPref("browser.snapshots.limit");
+  },
+
+  /**
+   * Adds a snapshot to the list and initiates the compression of said snapshot.
+   * Once the compression is completed, it will replace the uncompressed
+   * snapshot in the list.
+   *
+   * @param aCanvas
+   *        The snapshot to add to the list and compress.
+   */
+  _assignSnapshotToCurrentBrowser:
+  function HSA__assignSnapshotToCurrentBrowser(aCanvas) {
+    let browser = gBrowser.selectedBrowser;
+    let currIndex = browser.webNavigation.sessionHistory.index;
+
+    this._removeTrackedSnapshot(currIndex, browser);
+    this._addSnapshotRefToArray(currIndex, browser);
+
+    if (!("snapshots" in browser))
+      browser.snapshots = [];
+    let snapshots = browser.snapshots;
+    // Temporarily store the canvas as the compressed snapshot.
+    // This avoids a blank page if the user swipes quickly
+    // between pages before the compression could complete.
+    snapshots[currIndex] = aCanvas;
+
+    // Kick off snapshot compression.
+    aCanvas.toBlob(function(aBlob) {
+        snapshots[currIndex] = aBlob;
+      }, "image/png"
+    );
+  },
+
+  /**
+   * Removes a snapshot identified by the browser and index in the array of
+   * snapshots for that browser, if present. If no snapshot could be identified
+   * the method simply returns without taking any action. If aIndex is negative,
+   * all snapshots for a particular browser will be removed.
+   *
+   * @param aIndex
+   *        The index in history of the new snapshot, or negative value if all
+   *        snapshots for a browser should be removed.
+   * @param aBrowser
+   *        The browser the new snapshot was taken in.
+   */
+  _removeTrackedSnapshot: function HSA__removeTrackedSnapshot(aIndex, aBrowser) {
+    let arr = this._trackedSnapshots;
+    let requiresExactIndexMatch = aIndex >= 0;
+    for (let i = 0; i < arr.length; i++) {
+      if ((arr[i].browser == aBrowser) &&
+          (aIndex < 0 || aIndex == arr[i].index)) {
+        delete aBrowser.snapshots[arr[i].index];
+        arr.splice(i, 1);
+        if (requiresExactIndexMatch)
+          return; // Found and removed the only element.
+        i--; // Make sure to revisit the index that we just removed an
+             // element at.
+      }
+    }
+  },
+
+  /**
+   * Adds a new snapshot reference for a given index and browser to the array
+   * of references to tracked snapshots.
+   *
+   * @param aIndex
+   *        The index in history of the new snapshot.
+   * @param aBrowser
+   *        The browser the new snapshot was taken in.
+   */
+  _addSnapshotRefToArray:
+  function HSA__addSnapshotRefToArray(aIndex, aBrowser) {
+    let id = { index: aIndex,
+               browser: aBrowser };
+    let arr = this._trackedSnapshots;
+    arr.unshift(id);
+
+    while (arr.length > this._maxSnapshots) {
+      let lastElem = arr[arr.length - 1];
+      delete lastElem.browser.snapshots[lastElem.index];
+      arr.splice(-1, 1);
+    }
+  },
+
+  /**
+   * Converts a compressed blob to an Image object. In some situations
+   * (especially during fast swiping) aBlob may still be a canvas, not a
+   * compressed blob. In this case, we simply return the canvas.
+   *
+   * @param aBlob
+   *        The compressed blob to convert, or a canvas if a blob compression
+   *        couldn't complete before this method was called.
+   * @return A new Image object representing the converted blob.
+   */
+  _convertToImg: function HSA__convertToImg(aBlob) {
+    if (!aBlob)
+      return null;
+
+    // Return aBlob if it's still a canvas and not a compressed blob yet.
+    if (aBlob instanceof HTMLCanvasElement)
+      return aBlob;
+
+    let img = new Image();
+    let url = URL.createObjectURL(aBlob);
+    img.onload = function() {
+      URL.revokeObjectURL(url);
+    };
+    img.src = url;
+    return img;
+  },
+
+  /**
+   * Sets the snapshot of the current page to the snapshot passed as parameter,
+   * or to the one previously stored for the current index in history if the
+   * parameter is null.
+   *
+   * @param aCanvas
+   *        The snapshot to set the current page to. If this parameter is null,
+   *        the previously stored snapshot for this index (if any) will be used.
+   */
+  _installCurrentPageSnapshot:
+  function HSA__installCurrentPageSnapshot(aCanvas) {
+    let currSnapshot = aCanvas;
+    if (!currSnapshot) {
+      let snapshots = gBrowser.selectedBrowser.snapshots || {};
+      let currIndex = this._historyIndex;
+      if (currIndex in snapshots)
+        currSnapshot = this._convertToImg(snapshots[currIndex]);
+    }
+    document.mozSetImageElement("historySwipeAnimationCurrentPageSnapshot",
+                                  currSnapshot);
+  },
+
+  /**
+   * Sets the snapshots of the previous and next pages to the snapshots
+   * previously stored for their respective indeces.
+   */
+  _installPrevAndNextSnapshots:
+  function HSA__installPrevAndNextSnapshots() {
+    let snapshots = gBrowser.selectedBrowser.snapshots || [];
+    let currIndex = this._historyIndex;
+    let prevIndex = currIndex - 1;
+    let prevSnapshot = null;
+    if (prevIndex in snapshots)
+      prevSnapshot = this._convertToImg(snapshots[prevIndex]);
+    document.mozSetImageElement("historySwipeAnimationPreviousPageSnapshot",
+                                prevSnapshot);
+
+    let nextIndex = currIndex + 1;
+    let nextSnapshot = null;
+    if (nextIndex in snapshots)
+      nextSnapshot = this._convertToImg(snapshots[nextIndex]);
+    document.mozSetImageElement("historySwipeAnimationNextPageSnapshot",
+                                nextSnapshot);
+  },
+};
diff --git a/webbrowser/base/content/browser-menubar.inc b/webbrowser/base/content/browser-menubar.inc
new file mode 100644
index 0000000..fc6bc76
--- /dev/null
+++ b/webbrowser/base/content/browser-menubar.inc
@@ -0,0 +1,564 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+       <menubar id="main-menubar"
+                onpopupshowing="if (event.target.parentNode.parentNode == this &amp;&amp;
+                                    !('@mozilla.org/widget/nativemenuservice;1' in Cc))
+                                  this.setAttribute('openedwithkey',
+                                                    event.target.parentNode.openedWithKey);"
+                style="border:0px;padding:0px;margin:0px;-moz-appearance:none">
+            <menu id="file-menu" label="&fileMenu.label;"
+                  accesskey="&fileMenu.accesskey;">
+              <menupopup id="menu_FilePopup">
+                <menuitem id="menu_newNavigatorTab"
+                          label="&tabCmd.label;"
+                          command="cmd_newNavigatorTab"
+                          key="key_newNavigatorTab"
+                          accesskey="&tabCmd.accesskey;"/>
+                <menuitem id="menu_newNavigator"
+                          label="&newNavigatorCmd.label;"
+                          accesskey="&newNavigatorCmd.accesskey;"
+                          key="key_newNavigator"
+                          command="cmd_newNavigator"/>
+                <menuitem id="menu_newPrivateWindow"
+                          label="&newPrivateWindow.label;"
+                          accesskey="&newPrivateWindow.accesskey;"
+                          command="Tools:PrivateBrowsing"
+                          key="key_privatebrowsing"/>
+                <menuitem id="menu_openLocation"
+                          class="show-only-for-keyboard"
+                          label="&openLocationCmd.label;"
+                          command="Browser:OpenLocation"
+                          key="focusURLBar"
+                          accesskey="&openLocationCmd.accesskey;"/>
+                <menuitem id="menu_openFile"
+                          label="&openFileCmd.label;"
+                          command="Browser:OpenFile"
+                          key="openFileKb"
+                          accesskey="&openFileCmd.accesskey;"/>
+                <menuitem id="menu_close"
+                          class="show-only-for-keyboard"
+                          label="&closeCmd.label;"
+                          key="key_close"
+                          accesskey="&closeCmd.accesskey;"
+                          command="cmd_close"/>
+                <menuitem id="menu_closeWindow"
+                          class="show-only-for-keyboard"
+                          hidden="true"
+                          command="cmd_closeWindow"
+                          key="key_closeWindow"
+                          label="&closeWindow.label;"
+                          accesskey="&closeWindow.accesskey;"/>
+                <menuseparator/>
+                <menuitem id="menu_savePage"
+                          label="&savePageCmd.label;"
+                          accesskey="&savePageCmd.accesskey;"
+                          key="key_savePage"
+                          command="Browser:SavePage"/>
+                <menuitem id="menu_sendLink"
+                          label="&emailPageCmd.label;"
+                          accesskey="&emailPageCmd.accesskey;"
+                          command="Browser:SendLink"/>
+                <menuseparator/>
+                <menuitem id="menu_printSetup"
+                          label="&printSetupCmd.label;"
+                          accesskey="&printSetupCmd.accesskey;"
+                          command="cmd_pageSetup"/>
+#ifndef XP_MACOSX
+                <menuitem id="menu_printPreview"
+                          label="&printPreviewCmd.label;"
+                          accesskey="&printPreviewCmd.accesskey;"
+                          command="cmd_printPreview"/>
+#endif
+                <menuitem id="menu_print"
+                          label="&printCmd.label;"
+                          accesskey="&printCmd.accesskey;"
+                          key="printKb"
+                          command="cmd_print"/>
+                <menuseparator/>
+                <menuitem id="goOfflineMenuitem"
+                          label="&goOfflineCmd.label;"
+                          accesskey="&goOfflineCmd.accesskey;"
+                          type="checkbox"
+                          observes="workOfflineMenuitemState"
+                          oncommand="BrowserOffline.toggleOfflineStatus();"/>
+                <menuitem id="menu_restart"
+                          label="&restartCmd.label;"
+                          accesskey="&restartCmd.accesskey;"
+                          command="cmd_restartApplication"/>
+                <menuitem id="menu_FileQuitItem"
+#ifdef XP_WIN
+                          label="&quitApplicationCmdWin.label;"
+                          accesskey="&quitApplicationCmdWin.accesskey;"
+#else
+#ifdef XP_MACOSX
+                          label="&quitApplicationCmdMac.label;"
+#else
+                          label="&quitApplicationCmd.label;"
+                          accesskey="&quitApplicationCmd.accesskey;"
+#endif
+#ifdef XP_UNIX
+                          key="key_quitApplication"
+#endif
+#endif
+                          command="cmd_quitApplication"/>
+              </menupopup>
+            </menu>
+
+            <menu id="edit-menu" label="&editMenu.label;"
+                  accesskey="&editMenu.accesskey;">
+              <menupopup id="menu_EditPopup"
+                         onpopupshowing="updateEditUIVisibility()"
+                         onpopuphidden="updateEditUIVisibility()">
+                <menuitem id="menu_undo"
+                          label="&undoCmd.label;"
+                          key="key_undo"
+                          accesskey="&undoCmd.accesskey;"
+                          command="cmd_undo"/>
+                <menuitem id="menu_redo"
+                          label="&redoCmd.label;"
+                          key="key_redo"
+                          accesskey="&redoCmd.accesskey;"
+                          command="cmd_redo"/>
+                <menuseparator/>
+                <menuitem id="menu_cut"
+                          label="&cutCmd.label;"
+                          key="key_cut"
+                          accesskey="&cutCmd.accesskey;"
+                          command="cmd_cut"/>
+                <menuitem id="menu_copy"
+                          label="&copyCmd.label;"
+                          key="key_copy"
+                          accesskey="&copyCmd.accesskey;"
+                          command="cmd_copy"/>
+                <menuitem id="menu_paste"
+                          label="&pasteCmd.label;"
+                          key="key_paste"
+                          accesskey="&pasteCmd.accesskey;"
+                          command="cmd_paste"/>
+                <menuitem id="menu_delete"
+                          label="&deleteCmd.label;"
+                          key="key_delete"
+                          accesskey="&deleteCmd.accesskey;"
+                          command="cmd_delete"/>
+                <menuseparator/>
+                <menuitem id="menu_selectAll"
+                          label="&selectAllCmd.label;"
+                          key="key_selectAll"
+                          accesskey="&selectAllCmd.accesskey;"
+                          command="cmd_selectAll"/>
+                <menuseparator/>
+                <menuitem id="menu_find"
+                          label="&findOnCmd.label;"
+                          accesskey="&findOnCmd.accesskey;"
+                          key="key_find"
+                          command="cmd_find"/>
+                <menuitem id="menu_findAgain"
+                          class="show-only-for-keyboard"
+                          label="&findAgainCmd.label;"
+                          accesskey="&findAgainCmd.accesskey;"
+                          key="key_findAgain"
+                          command="cmd_findAgain"/>
+                <menuseparator hidden="true" id="textfieldDirection-separator"/>
+                <menuitem id="textfieldDirection-swap"
+                          command="cmd_switchTextDirection"
+                          key="key_switchTextDirection"
+                          label="&bidiSwitchTextDirectionItem.label;"
+                          accesskey="&bidiSwitchTextDirectionItem.accesskey;"
+                          hidden="true"/>
+              </menupopup>
+            </menu>
+
+            <menu id="view-menu" label="&viewMenu.label;"
+                  accesskey="&viewMenu.accesskey;">
+              <menupopup id="menu_viewPopup"
+                         onpopupshowing="updateCharacterEncodingMenuState();">
+                <menu id="viewToolbarsMenu"
+                      label="&viewToolbarsMenu.label;"
+                      accesskey="&viewToolbarsMenu.accesskey;">
+                  <menupopup onpopupshowing="onViewToolbarsPopupShowing(event);">
+                    <menuseparator/>
+                    <menuitem id="menu_tabsOnTop"
+                              command="cmd_ToggleTabsOnTop"
+                              type="checkbox"
+                              label="&viewTabsOnTop.label;"
+                              accesskey="&viewTabsOnTop.accesskey;"/>
+                    <menuitem id="menu_customizeToolbars"
+                              label="&viewCustomizeToolbar.label;"
+                              accesskey="&viewCustomizeToolbar.accesskey;"
+                              command="cmd_CustomizeToolbars"/>
+                  </menupopup>
+                </menu>
+                <menu id="viewSidebarMenuMenu"
+                      label="&viewSidebarMenu.label;"
+                      accesskey="&viewSidebarMenu.accesskey;">
+                  <menupopup id="viewSidebarMenu">
+                    <menuitem id="menu_bookmarksSidebar"
+                              key="viewBookmarksSidebarKb"
+                              observes="viewBookmarksSidebar"
+                              label="&bookmarksButton.label;"/>
+                    <menuitem id="menu_historySidebar"
+                              key="key_gotoHistory"
+                              observes="viewHistorySidebar"
+                              label="&historyButton.label;"/>
+                  </menupopup>
+                </menu>
+                <menuseparator/>
+                <menuitem id="menu_stop"
+                          class="show-only-for-keyboard"
+                          label="&stopCmd.label;"
+                          accesskey="&stopCmd.accesskey;"
+                          command="Browser:Stop"
+#ifdef XP_MACOSX
+                          key="key_stop_mac"/>
+#else
+                          key="key_stop"/>
+#endif
+                <menuitem id="menu_reload"
+                          class="show-only-for-keyboard"
+                          label="&reloadCmd.label;"
+                          accesskey="&reloadCmd.accesskey;"
+                          key="key_reload"
+                          command="Browser:ReloadOrDuplicate"
+                          onclick="checkForMiddleClick(this, event);"/>
+                <menuseparator class="show-only-for-keyboard"/>
+                <menu id="viewFullZoomMenu" label="&fullZoom.label;"
+                      accesskey="&fullZoom.accesskey;"
+                      onpopupshowing="FullZoom.updateMenu();">
+                  <menupopup>
+                    <menuitem id="menu_zoomEnlarge"
+                              key="key_fullZoomEnlarge"
+                              label="&fullZoomEnlargeCmd.label;"
+                              accesskey="&fullZoomEnlargeCmd.accesskey;"
+                              command="cmd_fullZoomEnlarge"/>
+                    <menuitem id="menu_zoomReduce"
+                              key="key_fullZoomReduce"
+                              label="&fullZoomReduceCmd.label;"
+                              accesskey="&fullZoomReduceCmd.accesskey;"
+                              command="cmd_fullZoomReduce"/>
+                    <menuseparator/>
+                    <menuitem id="menu_zoomReset"
+                              key="key_fullZoomReset"
+                              label="&fullZoomResetCmd.label;"
+                              accesskey="&fullZoomResetCmd.accesskey;"
+                              command="cmd_fullZoomReset"/>
+                    <menuseparator/>
+                    <menuitem id="toggle_zoom"
+                              label="&fullZoomToggleCmd.label;"
+                              accesskey="&fullZoomToggleCmd.accesskey;"
+                              type="checkbox"
+                              command="cmd_fullZoomToggle"
+                              checked="false"/>
+                  </menupopup>
+                </menu>
+                <menu id="pageStyleMenu" label="&pageStyleMenu.label;"
+                      accesskey="&pageStyleMenu.accesskey;" observes="isImage">
+                  <menupopup onpopupshowing="gPageStyleMenu.fillPopup(this);">
+                    <menuitem id="menu_pageStyleNoStyle"
+                              label="&pageStyleNoStyle.label;"
+                              accesskey="&pageStyleNoStyle.accesskey;"
+                              oncommand="gPageStyleMenu.disableStyle();"
+                              type="radio"/>
+                    <menuitem id="menu_pageStylePersistentOnly"
+                              label="&pageStylePersistentOnly.label;"
+                              accesskey="&pageStylePersistentOnly.accesskey;"
+                              oncommand="gPageStyleMenu.switchStyleSheet('');"
+                              type="radio"
+                              checked="true"/>
+                    <menuseparator/>
+                  </menupopup>
+                </menu>
+#include browser-charsetmenu.inc
+                <menuseparator/>
+#ifdef XP_MACOSX
+                <menuitem id="enterFullScreenItem"
+                          accesskey="&enterFullScreenCmd.accesskey;"
+                          label="&enterFullScreenCmd.label;"
+                          key="key_fullScreen">
+                  <observes element="View:FullScreen" attribute="oncommand"/>
+                  <observes element="View:FullScreen" attribute="disabled"/>
+                </menuitem>
+                <menuitem id="exitFullScreenItem"
+                          accesskey="&exitFullScreenCmd.accesskey;"
+                          label="&exitFullScreenCmd.label;"
+                          key="key_fullScreen"
+                          hidden="true">
+                  <observes element="View:FullScreen" attribute="oncommand"/>
+                  <observes element="View:FullScreen" attribute="disabled"/>
+                </menuitem>
+#else
+                <menuitem id="fullScreenItem"
+                          accesskey="&fullScreenCmd.accesskey;"
+                          label="&fullScreenCmd.label;"
+                          key="key_fullScreen"
+                          type="checkbox"
+                          observes="View:FullScreen"/>
+#endif
+                <menuitem id="menu_showAllTabs"
+                          hidden="true"
+                          accesskey="&showAllTabsCmd.accesskey;"
+                          label="&showAllTabsCmd.label;"
+                          command="Browser:ShowAllTabs"
+                          key="key_showAllTabs"/>
+                <menuseparator hidden="true" id="documentDirection-separator"/>
+                <menuitem id="documentDirection-swap"
+                          hidden="true"
+                          label="&bidiSwitchPageDirectionItem.label;"
+                          accesskey="&bidiSwitchPageDirectionItem.accesskey;"
+                          oncommand="SwitchDocumentDirection(window.content)"/>
+              </menupopup>
+            </menu>
+
+            <menu id="history-menu"
+                  label="&historyMenu.label;"
+                  accesskey="&historyMenu.accesskey;">
+              <menupopup id="goPopup"
+#ifndef XP_MACOSX
+                         placespopup="true"
+#endif
+                         context="placesContext"
+                         oncommand="this.parentNode._placesView._onCommand(event);"
+                         onclick="checkForMiddleClick(this, event);"
+                         onpopupshowing="if (!this.parentNode._placesView)
+                                           new HistoryMenu(event);"
+                         tooltip="bhTooltip"
+                         popupsinherittooltip="true">
+                <menuitem id="historyMenuBack"
+                          class="show-only-for-keyboard"
+                          label="&backCmd.label;"
+#ifdef XP_MACOSX
+                          key="goBackKb2"
+#else
+                          key="goBackKb"
+#endif
+                          command="Browser:BackOrBackDuplicate"
+                          onclick="checkForMiddleClick(this, event);"/>
+                <menuitem id="historyMenuForward"
+                          class="show-only-for-keyboard"
+                          label="&forwardCmd.label;"
+#ifdef XP_MACOSX
+                          key="goForwardKb2"
+#else
+                          key="goForwardKb"
+#endif
+                          command="Browser:ForwardOrForwardDuplicate"
+                          onclick="checkForMiddleClick(this, event);"/>
+                <menuitem id="historyMenuHome"
+                          class="show-only-for-keyboard"
+                          label="&historyHomeCmd.label;"
+                          oncommand="BrowserGoHome(event);"
+                          onclick="checkForMiddleClick(this, event);"
+                          key="goHome"/>
+                <menuseparator id="historyMenuHomeSeparator"
+                               class="show-only-for-keyboard"/>
+                <menuitem id="menu_showAllHistory"
+                          label="&showAllHistoryCmd2.label;"
+#ifndef XP_MACOSX
+                          class="menuitem-iconic"
+                          key="showAllHistoryKb"
+#endif
+                          command="Browser:ShowAllHistory"/>
+                <menuitem id="sanitizeItem"
+#ifndef XP_MACOSX
+                          class="menuitem-iconic"
+#endif
+                          label="&clearRecentHistory.label;"
+                          key="key_sanitize"
+                          command="Tools:Sanitize"/>
+                <menuseparator id="sanitizeSeparator"/>
+#ifdef MOZ_SERVICES_SYNC
+                <menuitem id="sync-tabs-menuitem"
+                          class="syncTabsMenuItem"
+                          label="&syncTabsMenu2.label;"
+                          oncommand="BrowserOpenSyncTabs();"
+                          disabled="true"/>
+#endif
+                <menuitem id="historyRestoreLastSession"
+                          label="&historyRestoreLastSession.label;"
+                          command="Browser:RestoreLastSession"/>
+                <menu id="historyUndoMenu"
+                      class="recentlyClosedTabsMenu"
+                      label="&historyUndoMenu.label;"
+                      disabled="true">
+                  <menupopup id="historyUndoPopup"
+#ifndef XP_MACOSX
+                             placespopup="true"
+#endif
+                             onpopupshowing="document.getElementById('history-menu')._placesView.populateUndoSubmenu();"/>
+                </menu>
+                <menu id="historyUndoWindowMenu"
+                      class="recentlyClosedWindowsMenu"
+                      label="&historyUndoWindowMenu.label;"
+                      disabled="true">
+                  <menupopup id="historyUndoWindowPopup"
+#ifndef XP_MACOSX
+                             placespopup="true"
+#endif
+                             onpopupshowing="document.getElementById('history-menu')._placesView.populateUndoWindowSubmenu();"/>
+                </menu>
+                <menuseparator id="startHistorySeparator"
+                               class="hide-if-empty-places-result"/>
+              </menupopup>
+            </menu>
+
+  <menu id="bookmarksMenu"
+        label="&bookmarksMenu.label;"
+        accesskey="&bookmarksMenu.accesskey;"
+        ondragenter="PlacesMenuDNDHandler.onDragEnter(event);"
+        ondragover="PlacesMenuDNDHandler.onDragOver(event);"
+        ondrop="PlacesMenuDNDHandler.onDrop(event);">
+    <menupopup id="bookmarksMenuPopup"
+#ifndef XP_MACOSX
+               placespopup="true"
+#endif
+               context="placesContext"
+               openInTabs="children"
+               oncommand="BookmarksEventHandler.onCommand(event, this.parentNode._placesView);"
+               onclick="BookmarksEventHandler.onClick(event, this.parentNode._placesView);"
+               onpopupshowing="PlacesCommandHook.updateBookmarkAllTabsCommand();
+                               if (!this.parentNode._placesView)
+                                 new PlacesMenu(event, 'place:folder=BOOKMARKS_MENU');"
+               tooltip="bhTooltip" popupsinherittooltip="true">
+      <menuitem id="bookmarksShowAll"
+#ifndef XP_MACOSX
+                class="menuitem-iconic"
+#endif
+                label="&organizeBookmarks.label;"
+                command="Browser:ShowAllBookmarks"
+                key="manBookmarkKb"/>
+      <menuseparator id="organizeBookmarksSeparator"/>
+      <menuitem id="menu_bookmarkThisPage"
+#ifndef XP_MACOSX
+                class="menuitem-iconic"
+#endif
+                label="&bookmarkThisPageCmd.label;"
+                command="Browser:AddBookmarkAs"
+                key="addBookmarkAsKb"/>
+      <menuitem id="subscribeToPageMenuitem"
+#ifndef XP_MACOSX
+                class="menuitem-iconic"
+#endif
+                label="&subscribeToPageMenuitem.label;"
+                oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                onclick="checkForMiddleClick(this, event);"
+                observes="singleFeedMenuitemState"/>
+      <menu id="subscribeToPageMenupopup"
+#ifndef XP_MACOSX
+            class="menu-iconic"
+#endif
+            label="&subscribeToPageMenupopup.label;"
+            observes="multipleFeedsMenuState">
+        <menupopup id="subscribeToPageSubmenuMenupopup"
+                   onpopupshowing="return FeedHandler.buildFeedList(event.target);"
+                   oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                   onclick="checkForMiddleClick(this, event);"/>
+      </menu>
+      <menuitem id="menu_bookmarkAllTabs"
+                label="&addCurPagesCmd.label;"
+                class="show-only-for-keyboard"
+                command="Browser:BookmarkAllTabs"
+                key="bookmarkAllTabsKb"/>
+      <menuseparator id="bookmarksToolbarSeparator"/>
+      <menu id="bookmarksToolbarFolderMenu"
+            class="menu-iconic bookmark-item"
+            label="&personalbarCmd.label;"
+            container="true">
+        <menupopup id="bookmarksToolbarFolderPopup"
+#ifndef XP_MACOSX
+                   placespopup="true"
+#endif
+                   context="placesContext"
+                   onpopupshowing="if (!this.parentNode._placesView)
+                                     new PlacesMenu(event, 'place:folder=TOOLBAR');"/>
+      </menu>
+      <menuseparator id="bookmarksMenuItemsSeparator"/>
+      <!-- Bookmarks menu items -->
+      <menuseparator builder="end"
+                     class="hide-if-empty-places-result"/>
+      <menuitem id="menu_unsortedBookmarks"
+#ifndef XP_MACOSX
+                class="menuitem-iconic"
+#endif
+                label="&unsortedBookmarksCmd.label;"
+                oncommand="PlacesCommandHook.showPlacesOrganizer('UnfiledBookmarks');"/>
+    </menupopup>
+  </menu>
+
+            <menu id="tools-menu"
+                  label="&toolsMenu.label;"
+                  accesskey="&toolsMenu.accesskey;">
+              <menupopup id="menu_ToolsPopup"
+#ifdef MOZ_SERVICES_SYNC
+                         onpopupshowing="gSyncUI.updateUI();"
+#endif
+                         >
+              <menuitem id="menu_search"
+                        class="show-only-for-keyboard"
+                        label="&search.label;"
+                        accesskey="&search.accesskey;"
+                        key="key_search"
+                        command="Tools:Search"/>
+              <menuseparator id="browserToolsSeparator"
+                             class="show-only-for-keyboard"/>
+              <menuitem id="menu_openDownloads"
+                        label="&downloads.label;"
+                        accesskey="&downloads.accesskey;"
+                        key="key_openDownloads"
+                        command="Tools:Downloads"/>
+              <menuitem id="menu_openAddons"
+                        label="&addons.label;"
+                        accesskey="&addons.accesskey;"
+                        key="key_openAddons"
+                        command="Tools:Addons"/>
+              <menuitem id="menu_openPermissions"
+                        label="&permissions.label;"
+                        command="Tools:Permissions"
+                        accesskey="&permissions.accesskey;"/>
+#ifdef MOZ_SERVICES_SYNC
+              <!-- only one of sync-setup or sync-menu will be showing at once -->
+              <menuitem id="sync-setup"
+                        label="&syncSetup.label;"
+                        accesskey="&syncSetup.accesskey;"
+                        observes="sync-setup-state"
+                        oncommand="gSyncUI.openSetup()"/>
+              <menuitem id="sync-syncnowitem"
+                        label="&syncSyncNowItem.label;"
+                        accesskey="&syncSyncNowItem.accesskey;"
+                        observes="sync-syncnow-state"
+                        oncommand="gSyncUI.doSync(event);"/>
+#endif
+              <menuseparator id="devToolsSeparator"/>
+              <menu id="webDeveloperMenu"
+                    label="&webDeveloperMenu.label;"
+                    accesskey="&webDeveloperMenu.accesskey;">
+                <menupopup id="menuWebDeveloperPopup">
+                  <menuitem id="menu_pageSource"
+                            observes="devtoolsMenuBroadcaster_PageSource"
+                            accesskey="&pageSourceCmd.accesskey;"/>
+                  <menuitem id="javascriptConsole"
+                            observes="devtoolsMenuBroadcaster_ErrorConsole"
+                            accesskey="&errorConsoleCmd.accesskey;"/>
+                </menupopup>
+              </menu>
+              <menuitem id="menu_pageInfo"
+                        accesskey="&pageInfoCmd.accesskey;"
+                        label="&pageInfoCmd.label;"
+#ifndef XP_WIN
+                        key="key_viewInfo"
+#endif
+                        command="View:PageInfo"/>
+              <menuseparator id="prefSep"/>
+              <menuitem id="menu_preferences"
+                        label="&preferencesCmd2.label;"
+                        accesskey="&preferencesCmd2.accesskey;"
+                        oncommand="openPreferences();"/>
+              </menupopup>
+            </menu>
+
+#ifdef XP_MACOSX
+          <menu id="windowMenu" />
+#endif
+          <menu id="helpMenu" />
+        </menubar>
diff --git a/webbrowser/base/content/browser-menudragging.js b/webbrowser/base/content/browser-menudragging.js
new file mode 100644
index 0000000..f3f00d7
--- /dev/null
+++ b/webbrowser/base/content/browser-menudragging.js
@@ -0,0 +1,340 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+//
+// Based on original code by alice0775 https://github.com/alice0775
+
+
+"use strict";
+var browserMenuDragging = {
+  //-- config --
+  STAY_OPEN_ONDRAGEXIT: false,
+  DEBUG: false,
+  //-- config --
+
+  menupopup: ['bookmarksMenuPopup',
+              'PlacesToolbar',
+              'BMB_bookmarksPopup',
+              'appmenu_bookmarksPopup',
+              'BookmarksMenuToolButtonPopup',
+              'UnsortedBookmarksFolderToolButtonPopup',
+              'bookmarksMenuPopup-context'],
+  timer:[],
+  count:[],
+
+
+  init: function(){
+    window.removeEventListener('load', this, false);
+    window.addEventListener('unload', this, false);
+    this.addPrefListener(this.PrefListener);
+
+    window.addEventListener('aftercustomization', this, false);
+
+    this.initPref();
+    this.delayedStartup();
+  },
+
+  uninit: function(){
+    window.removeEventListener('unload', this, false);
+    this.removePrefListener(this.PrefListener);
+
+    window.removeEventListener('aftercustomization', this, false);
+
+    for (var i = 0; i < this.menupopup.length; i++){
+      var menupopup = document.getElementById(this.menupopup[i]);
+      if (menupopup){
+        menupopup.removeEventListener('popupshowing', this, false);
+        menupopup.removeEventListener('popuphiding', this, false);
+      }
+    }
+
+  },
+
+  initPref: function(){
+    this.STAY_OPEN_ONDRAGEXIT =
+          Services.prefs.getBoolPref('browser.menu.dragging.stayOpen', false);
+    this.DEBUG =
+          Services.prefs.getBoolPref('browser.menu.dragging.debug', false);
+  },
+
+  //delayed startup
+  delayedStartup: function(){
+    //wait until construction of bookmarksBarContent is completed.
+    for (var i = 0; i < this.menupopup.length; i++){
+      this.count[i] = 0;
+      this.timer[i] = setInterval(function(self, i){
+        if(++self.count[i] > 50 || document.getElementById(self.menupopup[i])){
+          clearInterval(self.timer[i]);
+          var menupopup = document.getElementById(self.menupopup[i]);
+          if (menupopup) {
+            menupopup.addEventListener('popupshowing', self, false);
+            menupopup.addEventListener('popuphiding', self, false);
+          }
+        }
+      }, 250, this, i);
+    }
+  },
+
+  handleEvent: function(event){
+    switch (event.type) {
+      case 'popupshowing':
+        this.popupshowing(event);
+        break;
+      case 'popuphiding':
+        this.popuphiding(event);
+        break;
+      case 'aftercustomization':
+        setTimeout(function(self){self.delayedStartup(self);}, 0, this);
+        break;
+      case 'load':
+        this.init();
+        break;
+      case 'unload':
+        this.uninit();
+        break;
+    }
+  },
+
+  popuphiding: function(event) {
+    var menupopup = event.originalTarget;
+    menupopup.parentNode.parentNode.openNode = null;
+
+    if (menupopup.parentNode.localName == 'toolbarbutton') {
+      // Fix for Bug 225434 -  dragging bookmark from personal toolbar and releasing
+      // (on same bookmark or elsewhere) or clicking on bookmark menu then cancelling
+      // leaves button depressed/sunken when hovered
+      menupopup.parentNode.parentNode._openedMenuButton = null;
+
+      if (!PlacesControllerDragHelper.getSession())
+      // Clear the dragover attribute if present, if we are dragging into a
+      // folder in the hierachy of current opened popup we don't clear
+      // this attribute on clearOverFolder.  See Notify for closeTimer.
+      if (menupopup.parentNode.hasAttribute('dragover'))
+        menupopup.parentNode.removeAttribute('dragover');
+    }
+  },
+
+  popupshowing: function(event) {
+    var menupopup = event.originalTarget;
+    browserMenuDragging.debug("popupshowing ===============\n" + menupopup.parentNode.getAttribute('label'));
+
+    var parentPopup = menupopup.parentNode.parentNode;
+
+    if (!!parentPopup.openNode){
+      try {
+        parentPopup.openNode.hidePopup();
+      } catch(e){}
+    }
+    parentPopup.openNode = menupopup;
+
+    menupopup.onDragStart = function (event) {
+      // Bug 555474 -  While bookmark is dragged, the tooltip should not appear
+      browserMenuDragging.hideTooltip();
+    }
+
+    menupopup.onDragOver = function (event) {
+      // Bug 555474 -  While bookmark is dragged, the tooltip should not appear
+      browserMenuDragging.hideTooltip();
+
+      var target = event.originalTarget;
+      while (target) {
+        if (/menupopup/.test(target.localName))
+          break;
+        target = target.parentNode;
+      }
+      if (this != target)
+        return;
+      event.stopPropagation();
+      browserMenuDragging.debug("onDragOver " + "\n" + this.parentNode.getAttribute('label'));
+
+      PlacesControllerDragHelper.currentDropTarget = event.target;
+      let dt = event.dataTransfer;
+
+      let dropPoint = this._getDropPoint(event);
+
+      if (!dropPoint || !dropPoint.ip ||
+          !PlacesControllerDragHelper.canDrop(dropPoint.ip, dt)) {
+        this._indicatorBar.hidden = true;
+        event.stopPropagation();
+        return;
+      }
+
+      // Mark this popup as being dragged over.
+      this.setAttribute('dragover', 'true');
+
+      if (dropPoint.folderElt) {
+        // We are dragging over a folder.
+        // _overFolder should take the care of opening it on a timer.
+        if (this._overFolder.elt &&
+            this._overFolder.elt != dropPoint.folderElt) {
+        }
+        if (!this._overFolder.elt) {
+          this._overFolder.elt = dropPoint.folderElt;
+          // Create the timer to open this folder.
+          this._overFolder.openTimer = this._overFolder
+                                           .setTimer(this._overFolder.hoverTime);
+        }
+      }
+      else {
+        // We are not dragging over a folder.
+      }
+
+      // Autoscroll the popup strip if we drag over the scroll buttons.
+      let anonid = event.originalTarget.getAttribute('anonid');
+      let scrollDir = anonid == 'scrollbutton-up' ? -1 :
+                      anonid == 'scrollbutton-down' ? 1 : 0;
+      if (scrollDir != 0) {
+        this._scrollBox.scrollByIndex(scrollDir, false);
+      }
+
+      // Check if we should hide the drop indicator for this target.
+      if (dropPoint.folderElt || this._hideDropIndicator(event)) {
+        this._indicatorBar.hidden = true;
+        event.preventDefault();
+        event.stopPropagation();
+        return;
+      }
+
+      // We should display the drop indicator relative to the arrowscrollbox.
+      let sbo = this._scrollBox.scrollBoxObject;
+      let newMarginTop = 0;
+      if (scrollDir == 0) {
+        let elt = this.firstChild;
+        while (elt && event.screenY > elt.boxObject.screenY +
+                                       elt.boxObject.height / 2)
+          elt = elt.nextSibling;
+        newMarginTop = elt ? elt.boxObject.screenY - sbo.screenY :
+                              sbo.height;
+      }
+      else if (scrollDir == 1)
+        newMarginTop = sbo.height;
+
+      // Set the new marginTop based on arrowscrollbox.
+      newMarginTop += sbo.y - this._scrollBox.boxObject.y;
+      this._indicatorBar.firstChild.style.marginTop = newMarginTop + 'px';
+      this._indicatorBar.hidden = false;
+
+      event.preventDefault();
+      event.stopPropagation();
+    }
+
+    menupopup.onDragExit = function (event) {
+      var target = event.originalTarget;
+      while (target) {
+        if (/menupopup/.test(target.localName))
+          break;
+        target = target.parentNode;
+      }
+      if (this != target)
+        return;
+      event.stopPropagation();
+      browserMenuDragging.debug("onDragExit " + browserMenuDragging.STAY_OPEN_ONDRAGEXIT);
+
+      PlacesControllerDragHelper.currentDropTarget = null;
+      this.removeAttribute('dragover');
+
+      // If we have not moved to a valid new target clear the drop indicator
+      // this happens when moving out of the popup.
+      target = event.relatedTarget;
+      if (!target)
+        this._indicatorBar.hidden = true;
+
+      // Close any folder being hovered over
+      if (this._overFolder.elt) {
+        this._overFolder.closeTimer = this._overFolder
+                                          .setTimer(this._overFolder.hoverTime);
+      }
+
+      // The auto-opened attribute is set when this folder was automatically
+      // opened after the user dragged over it.  If this attribute is set,
+      // auto-close the folder on drag exit.
+      // We should also try to close this popup if the drag has started
+      // from here, the timer will check if we are dragging over a child.
+      if (this.hasAttribute('autoopened') ||
+          !browserMenuDragging.STAY_OPEN_ONDRAGEXIT &&
+          this.hasAttribute('dragstart')) {
+        this._overFolder.closeMenuTimer = this._overFolder
+                                              .setTimer(this._overFolder.hoverTime);
+      }
+
+      event.stopPropagation();
+    }
+
+    menupopup.addEventListener('dragstart', menupopup.onDragStart, true);
+    menupopup.addEventListener('dragover', menupopup.onDragOver, true);
+    menupopup.addEventListener('dragleave', menupopup.onDragExit, true);
+  },
+
+  hideTooltip: function() {
+    ['bhTooltip', 'btTooltip2'].forEach(function(id) {
+      var tooltip = document.getElementById(id);
+      if (tooltip)
+        tooltip.hidePopup();
+    });
+  },
+
+  get getVer(){
+    const Cc = Components.classes;
+    const Ci = Components.interfaces;
+    var info = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo);
+    var ver = parseInt(info.version.substr(0,3) * 10,10) / 10;
+    return ver;
+  },
+
+  debug: function(aMsg){
+    if (!browserMenuDragging.DEBUG)
+      return;
+    Components.classes["@mozilla.org/consoleservice;1"]
+      .getService(Components.interfaces.nsIConsoleService)
+      .logStringMessage(aMsg);
+  },
+
+  setPref: function(aPrefString, aPrefType, aValue){
+    var xpPref = Components.classes["@mozilla.org/preferences-service;1"]
+                  .getService(Components.interfaces.nsIPrefService);
+    try{
+      switch (aPrefType){
+        case 'complex':
+          return xpPref.setComplexValue(aPrefString, Components.interfaces.nsILocalFile, aValue); break;
+        case 'str':
+          return xpPref.setCharPref(aPrefString, aValue); break;
+        case 'int':
+          aValue = parseInt(aValue);
+          return xpPref.setIntPref(aPrefString, aValue);  break;
+        case 'bool':
+        default:
+          return xpPref.setBoolPref(aPrefString, aValue); break;
+      }
+    }catch(e){
+    }
+    return null;
+  },
+
+  addPrefListener: function(aObserver) {
+      try {
+          var pbi = Components.classes["@mozilla.org/preferences;1"].
+                    getService(Components.interfaces.nsIPrefBranch2);
+          pbi.addObserver(aObserver.domain, aObserver, false);
+      } catch(e) {}
+  },
+
+  removePrefListener: function(aObserver) {
+      try {
+          var pbi = Components.classes["@mozilla.org/preferences;1"].
+                    getService(Components.interfaces.nsIPrefBranch2);
+          pbi.removeObserver(aObserver.domain, aObserver);
+      } catch(e) {}
+  },
+
+  PrefListener:{
+      domain  : 'browser.menu.dragging.stayOpen',
+
+      observe : function(aSubject, aTopic, aPrefstring) {
+          if (aTopic == 'nsPref:changed') {
+              browserMenuDragging.initPref();
+          }
+      }
+  }
+}
+
+window.addEventListener('load', browserMenuDragging, false);
\ No newline at end of file
diff --git a/webbrowser/base/content/browser-menudragging.xul b/webbrowser/base/content/browser-menudragging.xul
new file mode 100644
index 0000000..f5cabe5
--- /dev/null
+++ b/webbrowser/base/content/browser-menudragging.xul
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+
+
+<overlay id="menuDraggingOverlay"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<window id="main-window">
+
+  <script type="application/x-javascript" src="chrome://browser/content/browser-menudragging.js" />
+
+</window>
+
+</overlay>
diff --git a/webbrowser/base/content/browser-places.js b/webbrowser/base/content/browser-places.js
new file mode 100644
index 0000000..590fe7e
--- /dev/null
+++ b/webbrowser/base/content/browser-places.js
@@ -0,0 +1,1316 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+////////////////////////////////////////////////////////////////////////////////
+//// StarUI
+
+var StarUI = {
+  _itemId: -1,
+  uri: null,
+  _batching: false,
+
+  _element: function(aID) {
+    return document.getElementById(aID);
+  },
+
+  // Edit-bookmark panel
+  get panel() {
+    delete this.panel;
+    var element = this._element("editBookmarkPanel");
+    // initially the panel is hidden
+    // to avoid impacting startup / new window performance
+    element.hidden = false;
+    element.addEventListener("popuphidden", this, false);
+    element.addEventListener("keypress", this, false);
+    return this.panel = element;
+  },
+
+  // Array of command elements to disable when the panel is opened.
+  get _blockedCommands() {
+    delete this._blockedCommands;
+    return this._blockedCommands =
+      ["cmd_close", "cmd_closeWindow"].map(function (id) this._element(id), this);
+  },
+
+  _blockCommands: function SU__blockCommands() {
+    this._blockedCommands.forEach(function (elt) {
+      // make sure not to permanently disable this item (see bug 409155)
+      if (elt.hasAttribute("wasDisabled"))
+        return;
+      if (elt.getAttribute("disabled") == "true") {
+        elt.setAttribute("wasDisabled", "true");
+      } else {
+        elt.setAttribute("wasDisabled", "false");
+        elt.setAttribute("disabled", "true");
+      }
+    });
+  },
+
+  _restoreCommandsState: function SU__restoreCommandsState() {
+    this._blockedCommands.forEach(function (elt) {
+      if (elt.getAttribute("wasDisabled") != "true")
+        elt.removeAttribute("disabled");
+      elt.removeAttribute("wasDisabled");
+    });
+  },
+
+  // nsIDOMEventListener
+  handleEvent: function SU_handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "popuphidden":
+        if (aEvent.originalTarget == this.panel) {
+          if (!this._element("editBookmarkPanelContent").hidden)
+            this.quitEditMode();
+
+          this._restoreCommandsState();
+          this._itemId = -1;
+          if (this._batching) {
+            PlacesUtils.transactionManager.endBatch(false);
+            this._batching = false;
+          }
+
+          switch (this._actionOnHide) {
+            case "cancel": {
+              PlacesUtils.transactionManager.undoTransaction();
+              break;
+            }
+            case "remove": {
+              // Remove all bookmarks for the bookmark's url, this also removes
+              // the tags for the url.
+              PlacesUtils.transactionManager.beginBatch(null);
+              let itemIds = PlacesUtils.getBookmarksForURI(this._uriForRemoval);
+              for (let i = 0; i < itemIds.length; i++) {
+                let txn = new PlacesRemoveItemTransaction(itemIds[i]);
+                PlacesUtils.transactionManager.doTransaction(txn);
+              }
+              PlacesUtils.transactionManager.endBatch(false);
+              break;
+            }
+          }
+          this._actionOnHide = "";
+        }
+        break;
+      case "keypress":
+        if (aEvent.defaultPrevented) {
+          // The event has already been consumed inside of the panel.
+          break;
+        }
+        switch (aEvent.keyCode) {
+          case KeyEvent.DOM_VK_ESCAPE:
+            if (!this._element("editBookmarkPanelContent").hidden)
+              this.cancelButtonOnCommand();
+            break;
+          case KeyEvent.DOM_VK_RETURN:
+            if (aEvent.target.className == "expander-up" ||
+                aEvent.target.className == "expander-down" ||
+                aEvent.target.id == "editBMPanel_newFolderButton") {
+              //XXX Why is this necessary? The defaultPrevented check should
+              //    be enough.
+              break;
+            }
+            this.panel.hidePopup();
+            break;
+        }
+        break;
+    }
+  },
+
+  _overlayLoaded: false,
+  _overlayLoading: false,
+  showEditBookmarkPopup:
+  function SU_showEditBookmarkPopup(aItemId, aAnchorElement, aPosition) {
+    // Performance: load the overlay the first time the panel is opened
+    // (see bug 392443).
+    if (this._overlayLoading)
+      return;
+
+    if (this._overlayLoaded) {
+      this._doShowEditBookmarkPanel(aItemId, aAnchorElement, aPosition);
+      return;
+    }
+
+    this._overlayLoading = true;
+    document.loadOverlay(
+      "chrome://browser/content/places/editBookmarkOverlay.xul",
+      (function (aSubject, aTopic, aData) {
+        //XXX We just caused localstore.rdf to be re-applied (bug 640158)
+        retrieveToolbarIconsizesFromTheme();
+
+        // Move the header (star, title, button) into the grid,
+        // so that it aligns nicely with the other items (bug 484022).
+        let header = this._element("editBookmarkPanelHeader");
+        let rows = this._element("editBookmarkPanelGrid").lastChild;
+        rows.insertBefore(header, rows.firstChild);
+        header.hidden = false;
+
+        this._overlayLoading = false;
+        this._overlayLoaded = true;
+        this._doShowEditBookmarkPanel(aItemId, aAnchorElement, aPosition);
+      }).bind(this)
+    );
+  },
+
+  _doShowEditBookmarkPanel:
+  function SU__doShowEditBookmarkPanel(aItemId, aAnchorElement, aPosition) {
+    if (this.panel.state != "closed")
+      return;
+
+    this._blockCommands(); // un-done in the popuphiding handler
+
+    // Set panel title:
+    // if we are batching, i.e. the bookmark has been added now,
+    // then show Page Bookmarked, else if the bookmark did already exist,
+    // we are about editing it, then use Edit This Bookmark.
+    this._element("editBookmarkPanelTitle").value =
+      this._batching ?
+        gNavigatorBundle.getString("editBookmarkPanel.pageBookmarkedTitle") :
+        gNavigatorBundle.getString("editBookmarkPanel.editBookmarkTitle");
+
+    // No description; show the Done, Cancel;
+    this._element("editBookmarkPanelDescription").textContent = "";
+    this._element("editBookmarkPanelBottomButtons").hidden = false;
+    this._element("editBookmarkPanelContent").hidden = false;
+
+    // The remove button is shown only if we're not already batching, i.e.
+    // if the cancel button/ESC does not remove the bookmark.
+    this._element("editBookmarkPanelRemoveButton").hidden = this._batching;
+
+    // The label of the remove button differs if the URI is bookmarked
+    // multiple times.
+    var bookmarks = PlacesUtils.getBookmarksForURI(gBrowser.currentURI);
+    var forms = gNavigatorBundle.getString("editBookmark.removeBookmarks.label");
+    var label = PluralForm.get(bookmarks.length, forms).replace("#1", bookmarks.length);
+    this._element("editBookmarkPanelRemoveButton").label = label;
+
+    // unset the unstarred state, if set
+    this._element("editBookmarkPanelStarIcon").removeAttribute("unstarred");
+
+    this._itemId = aItemId !== undefined ? aItemId : this._itemId;
+    this.beginBatch();
+
+    let onPanelReady = fn => {
+      let target = this.panel;
+      if (target.parentNode) {
+        // By targeting the panel's parent and using a capturing listener, we
+        // can have our listener called before others waiting for the panel to
+        // be shown (which probably expect the panel to be fully initialized)
+        target = target.parentNode;
+      }
+      target.addEventListener("popupshown", function(event) {
+        fn();
+      }, {"capture": true, "once": true});
+    };
+    gEditItemOverlay.initPanel(this._itemId,
+                               { onPanelReady,
+                                 hiddenRows: ["description", "location",
+                                              "loadInSidebar", "keyword"] });
+
+    this.panel.openPopup(aAnchorElement, aPosition);
+  },
+
+  panelShown:
+  function SU_panelShown(aEvent) {
+    if (aEvent.target == this.panel) {
+      if (!this._element("editBookmarkPanelContent").hidden) {
+        let fieldToFocus = "editBMPanel_" +
+          gPrefService.getCharPref("browser.bookmarks.editDialog.firstEditField");
+        var elt = this._element(fieldToFocus);
+        elt.focus();
+        elt.select();
+      }
+      else {
+        // Note this isn't actually used anymore, we should remove this
+        // once we decide not to bring back the page bookmarked notification
+        this.panel.focus();
+      }
+    }
+  },
+
+  quitEditMode: function SU_quitEditMode() {
+    this._element("editBookmarkPanelContent").hidden = true;
+    this._element("editBookmarkPanelBottomButtons").hidden = true;
+    gEditItemOverlay.uninitPanel(true);
+  },
+
+  cancelButtonOnCommand: function SU_cancelButtonOnCommand() {
+    this._actionOnHide = "cancel";
+    this.panel.hidePopup();
+  },
+
+  removeBookmarkButtonCommand: function SU_removeBookmarkButtonCommand() {
+    this._uriForRemoval = PlacesUtils.bookmarks.getBookmarkURI(this._itemId);
+    this._actionOnHide = "remove";
+    this.panel.hidePopup();
+  },
+
+  beginBatch: function SU_beginBatch() {
+    if (!this._batching) {
+      PlacesUtils.transactionManager.beginBatch(null);
+      this._batching = true;
+    }
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// PlacesCommandHook
+
+var PlacesCommandHook = {
+  /**
+   * Adds a bookmark to the page loaded in the given browser.
+   *
+   * @param aBrowser
+   *        a <browser> element.
+   * @param [optional] aParent
+   *        The folder in which to create a new bookmark if the page loaded in
+   *        aBrowser isn't bookmarked yet, defaults to the unfiled root.
+   * @param [optional] aShowEditUI
+   *        whether or not to show the edit-bookmark UI for the bookmark item
+   */  
+  bookmarkPage: function PCH_bookmarkPage(aBrowser, aParent, aShowEditUI) {
+    var uri = aBrowser.currentURI;
+    var itemId = PlacesUtils.getMostRecentBookmarkForURI(uri);
+    if (itemId == -1) {
+      // Copied over from addBookmarkForBrowser:
+      // Bug 52536: We obtain the URL and title from the nsIWebNavigation
+      // associated with a <browser/> rather than from a DOMWindow.
+      // This is because when a full page plugin is loaded, there is
+      // no DOMWindow (?) but information about the loaded document
+      // may still be obtained from the webNavigation.
+      var webNav = aBrowser.webNavigation;
+      var url = webNav.currentURI;
+      var title;
+      var description;
+      var charset;
+      try {
+        let isErrorPage = /^about:(neterror|certerror|blocked)/
+                          .test(webNav.document.documentURI);
+        title = isErrorPage ? PlacesUtils.history.getPageTitle(url)
+                            : webNav.document.title;
+        title = title || url.spec;
+        description = PlacesUIUtils.getDescriptionFromDocument(webNav.document);
+        charset = webNav.document.characterSet;
+      }
+      catch (e) { }
+
+      if (aShowEditUI) {
+        // If we bookmark the page here (i.e. page was not "starred" already)
+        // but open right into the "edit" state, start batching here, so
+        // "Cancel" in that state removes the bookmark.
+        StarUI.beginBatch();
+      }
+
+      var parent = aParent != undefined ?
+                   aParent : PlacesUtils.unfiledBookmarksFolderId;
+      var descAnno = { name: PlacesUIUtils.DESCRIPTION_ANNO, value: description };
+      var txn = new PlacesCreateBookmarkTransaction(uri, parent, 
+                                                    PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                                    title, null, [descAnno]);
+      PlacesUtils.transactionManager.doTransaction(txn);
+      itemId = txn.item.id;
+      // Set the character-set
+      if (charset && !PrivateBrowsingUtils.isWindowPrivate(aBrowser.contentWindow))
+        PlacesUtils.setCharsetForURI(uri, charset);
+    }
+
+    // Revert the contents of the location bar
+    if (gURLBar)
+      gURLBar.handleRevert();
+
+    // If it was not requested to open directly in "edit" mode, we are done.
+    if (!aShowEditUI)
+      return;
+
+    // Try to dock the panel to:
+    // 1. the bookmarks menu button
+    // 2. the page-proxy-favicon
+    // 3. the content area
+    if (BookmarkingUI.anchor) {
+      StarUI.showEditBookmarkPopup(itemId, BookmarkingUI.anchor,
+                                   "bottomcenter topright");
+      return;
+    }
+
+    let pageProxyFavicon = document.getElementById("page-proxy-favicon");
+    if (isElementVisible(pageProxyFavicon)) {
+      StarUI.showEditBookmarkPopup(itemId, pageProxyFavicon,
+                                   "bottomcenter topright");
+    } else {
+      StarUI.showEditBookmarkPopup(itemId, aBrowser, "overlap");
+    }
+  },
+
+  /**
+   * Adds a bookmark to the page loaded in the current tab. 
+   */
+  bookmarkCurrentPage: function PCH_bookmarkCurrentPage(aShowEditUI, aParent) {
+    this.bookmarkPage(gBrowser.selectedBrowser, aParent, aShowEditUI);
+  },
+
+  /**
+   * Adds a bookmark to the page targeted by a link.
+   * @param aParent
+   *        The folder in which to create a new bookmark if aURL isn't
+   *        bookmarked.
+   * @param aURL (string)
+   *        the address of the link target
+   * @param aTitle
+   *        The link text
+   */
+  bookmarkLink: function PCH_bookmarkLink(aParent, aURL, aTitle) {
+    var linkURI = makeURI(aURL);
+    var itemId = PlacesUtils.getMostRecentBookmarkForURI(linkURI);
+    if (itemId == -1) {
+      PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                       , type: "bookmark"
+                                       , uri: linkURI
+                                       , title: aTitle
+                                       , hiddenRows: [ "description"
+                                                     , "location"
+                                                     , "loadInSidebar"
+                                                     , "keyword" ]
+                                       }, window);
+    }
+    else {
+      PlacesUIUtils.showBookmarkDialog({ action: "edit"
+                                       , type: "bookmark"
+                                       , itemId: itemId
+                                       }, window);
+    }
+  },
+
+  /**
+   * List of nsIURI objects characterizing the tabs currently open in the
+   * browser, modulo pinned tabs.  The URIs will be in the order in which their
+   * corresponding tabs appeared and duplicates are discarded.
+   */
+  get uniqueCurrentPages() {
+    let uniquePages = {};
+    let URIs = [];
+    gBrowser.visibleTabs.forEach(function (tab) {
+      let spec = tab.linkedBrowser.currentURI.spec;
+      if (!tab.pinned && !(spec in uniquePages)) {
+        uniquePages[spec] = null;
+        URIs.push(tab.linkedBrowser.currentURI);
+      }
+    });
+    return URIs;
+  },
+
+  /**
+   * Adds a folder with bookmarks to all of the currently open tabs in this 
+   * window.
+   */
+  bookmarkCurrentPages: function PCH_bookmarkCurrentPages() {
+    let pages = this.uniqueCurrentPages;
+    if (pages.length > 1) {
+    PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                     , type: "folder"
+                                     , URIList: pages
+                                     , hiddenRows: [ "description" ]
+                                     }, window);
+    }
+  },
+
+  /**
+   * Updates disabled state for the "Bookmark All Tabs" command.
+   */
+  updateBookmarkAllTabsCommand:
+  function PCH_updateBookmarkAllTabsCommand() {
+    // There's nothing to do in non-browser windows.
+    if (window.location.href != getBrowserURL())
+      return;
+
+    // Disable "Bookmark All Tabs" if there are less than two
+    // "unique current pages".
+    goSetCommandEnabled("Browser:BookmarkAllTabs",
+                        this.uniqueCurrentPages.length >= 2);
+  },
+
+  /**
+   * Adds a Live Bookmark to a feed associated with the current page. 
+   * @param     url
+   *            The nsIURI of the page the feed was attached to
+   * @title     title
+   *            The title of the feed. Optional.
+   * @subtitle  subtitle
+   *            A short description of the feed. Optional.
+   */
+  addLiveBookmark: function PCH_addLiveBookmark(url, feedTitle, feedSubtitle) {
+    let toolbarIP = new InsertionPoint(PlacesUtils.toolbarFolderId, -1);
+
+    let feedURI = makeURI(url);
+    let title = feedTitle || gBrowser.contentTitle;
+    let description = feedSubtitle;
+    if (!description) {
+      description = PlacesUIUtils.getDescriptionFromDocument(gBrowser.contentDocument);
+    }
+
+    PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                     , type: "livemark"
+                                     , feedURI: feedURI
+                                     , siteURI: gBrowser.currentURI
+                                     , title: title
+                                     , description: description
+                                     , defaultInsertionPoint: toolbarIP
+                                     , hiddenRows: [ "feedLocation"
+                                                   , "siteLocation"
+                                                   , "description" ]
+                                     }, window);
+  },
+
+  /**
+   * Opens the Places Organizer. 
+   * @param   aLeftPaneRoot
+   *          The query to select in the organizer window - options
+   *          are: History, AllBookmarks, BookmarksMenu, BookmarksToolbar,
+   *          UnfiledBookmarks, Tags and Downloads.
+   */
+  showPlacesOrganizer: function PCH_showPlacesOrganizer(aLeftPaneRoot) {
+    var organizer = Services.wm.getMostRecentWindow("Places:Organizer");
+    // Due to bug 528706, getMostRecentWindow can return closed windows.
+    if (!organizer || organizer.closed) {
+      // No currently open places window, so open one with the specified mode.
+      openDialog("chrome://browser/content/places/places.xul", 
+                 "", "chrome,toolbar=yes,dialog=no,resizable", aLeftPaneRoot);
+    }
+    else {
+      organizer.PlacesOrganizer.selectLeftPaneQuery(aLeftPaneRoot);
+      organizer.focus();
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// HistoryMenu
+
+// View for the history menu.
+function HistoryMenu(aPopupShowingEvent) {
+  // Workaround for Bug 610187.  The sidebar does not include all the Places
+  // views definitions, and we don't need them there.
+  // Defining the prototype inheritance in the prototype itself would cause
+  // browser.js to halt on "PlacesMenu is not defined" error.
+  this.__proto__.__proto__ = PlacesMenu.prototype;
+  XPCOMUtils.defineLazyServiceGetter(this, "_ss",
+                                     "@mozilla.org/browser/sessionstore;1",
+                                     "nsISessionStore");
+  PlacesMenu.call(this, aPopupShowingEvent,
+                  "place:sort=4&maxResults=15");
+}
+
+HistoryMenu.prototype = {
+  toggleRestoreLastSession: function HM_toggleRestoreLastSession() {
+    let restoreItem = this._rootElt.ownerDocument.getElementById("Browser:RestoreLastSession");
+    
+    if (this._ss.canRestoreLastSession &&
+        !PrivateBrowsingUtils.isWindowPrivate(window))
+      restoreItem.removeAttribute("disabled");
+    else
+      restoreItem.setAttribute("disabled", true);
+  },
+ 
+  toggleRecentlyClosedTabs: function HM_toggleRecentlyClosedTabs() {
+    // enable/disable the Recently Closed Tabs sub menu
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedTabsMenu")[0];
+
+    // no restorable tabs, so disable menu
+    if (this._ss.getClosedTabCount(window) == 0)
+      undoMenu.setAttribute("disabled", true);
+    else
+      undoMenu.removeAttribute("disabled");
+  },
+
+  /**
+    * Re-open a closed tab and put it to the end of the tab strip.
+    * Used for a middle click.
+    * @param aEvent
+    *        The event when the user clicks the menu item
+    */
+  _undoCloseMiddleClick: function PHM__undoCloseMiddleClick(aEvent) {
+    if (aEvent.button != 1)
+      return;
+
+    undoCloseTab(aEvent.originalTarget.value);
+    gBrowser.moveTabToEnd();
+  },
+
+  /**
+   * Populate when the history menu is opened
+   */
+  populateUndoSubmenu: function PHM_populateUndoSubmenu() {
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedTabsMenu")[0];
+    var undoPopup = undoMenu.firstChild;
+
+    // remove existing menu items
+    while (undoPopup.hasChildNodes())
+      undoPopup.removeChild(undoPopup.firstChild);
+
+    // no restorable tabs, so make sure menu is disabled, and return
+    if (this._ss.getClosedTabCount(window) == 0) {
+      undoMenu.setAttribute("disabled", true);
+      return;
+    }
+
+    // enable menu
+    undoMenu.removeAttribute("disabled");
+
+    // populate menu
+    var undoItems = JSON.parse(this._ss.getClosedTabData(window));
+    for (var i = 0; i < undoItems.length; i++) {
+      var m = document.createElement("menuitem");
+      m.setAttribute("label", undoItems[i].title);
+      if (undoItems[i].image) {
+        let iconURL = undoItems[i].image;
+        // don't initiate a connection just to fetch a favicon (see bug 467828)
+        if (/^https?:/.test(iconURL))
+          iconURL = "moz-anno:favicon:" + iconURL;
+        m.setAttribute("image", iconURL);
+      }
+      m.setAttribute("class", "menuitem-iconic bookmark-item menuitem-with-favicon");
+      m.setAttribute("value", i);
+      m.setAttribute("oncommand", "undoCloseTab(" + i + ");");
+
+      // Set the targetURI attribute so it will be shown in tooltip and trigger
+      // onLinkHovered. SessionStore uses one-based indexes, so we need to
+      // normalize them.
+      let tabData = undoItems[i].state;
+      let activeIndex = (tabData.index || tabData.entries.length) - 1;
+      if (activeIndex >= 0 && tabData.entries[activeIndex])
+        m.setAttribute("targetURI", tabData.entries[activeIndex].url);
+
+      m.addEventListener("click", this._undoCloseMiddleClick, false);
+      if (i == 0)
+        m.setAttribute("key", "key_undoCloseTab");
+      undoPopup.appendChild(m);
+    }
+
+    // "Restore All Tabs"
+    var strings = gNavigatorBundle;
+    undoPopup.appendChild(document.createElement("menuseparator"));
+    m = undoPopup.appendChild(document.createElement("menuitem"));
+    m.id = "menu_restoreAllTabs";
+    m.setAttribute("label", strings.getString("menuRestoreAllTabs.label"));
+    m.addEventListener("command", function() {
+      for (var i = 0; i < undoItems.length; i++)
+        undoCloseTab();
+    }, false);
+  },
+
+  toggleRecentlyClosedWindows: function PHM_toggleRecentlyClosedWindows() {
+    // enable/disable the Recently Closed Windows sub menu
+    var undoMenu = this._rootElt.getElementsByClassName("recentlyClosedWindowsMenu")[0];
+
+    // no restorable windows, so disable menu
+    if (this._ss.getClosedWindowCount() == 0)
+      undoMenu.setAttribute("disabled", true);
+    else
+      undoMenu.removeAttribute("disabled");
+  },
+
+  /**
+   * Populate when the history menu is opened
+   */
+  populateUndoWindowSubmenu: function PHM_populateUndoWindowSubmenu() {
+    let undoMenu = this._rootElt.getElementsByClassName("recentlyClosedWindowsMenu")[0];
+    let undoPopup = undoMenu.firstChild;
+    let menuLabelString = gNavigatorBundle.getString("menuUndoCloseWindowLabel");
+    let menuLabelStringSingleTab =
+      gNavigatorBundle.getString("menuUndoCloseWindowSingleTabLabel");
+
+    // remove existing menu items
+    while (undoPopup.hasChildNodes())
+      undoPopup.removeChild(undoPopup.firstChild);
+
+    // no restorable windows, so make sure menu is disabled, and return
+    if (this._ss.getClosedWindowCount() == 0) {
+      undoMenu.setAttribute("disabled", true);
+      return;
+    }
+
+    // enable menu
+    undoMenu.removeAttribute("disabled");
+
+    // populate menu
+    let undoItems = JSON.parse(this._ss.getClosedWindowData());
+    for (let i = 0; i < undoItems.length; i++) {
+      let undoItem = undoItems[i];
+      let otherTabsCount = undoItem.tabs.length - 1;
+      let label = (otherTabsCount == 0) ? menuLabelStringSingleTab
+                                        : PluralForm.get(otherTabsCount, menuLabelString);
+      let menuLabel = label.replace("#1", undoItem.title)
+                           .replace("#2", otherTabsCount);
+      let m = document.createElement("menuitem");
+      m.setAttribute("label", menuLabel);
+      let selectedTab = undoItem.tabs[undoItem.selected - 1];
+      if (selectedTab.image) {
+        let iconURL = selectedTab.image;
+        // don't initiate a connection just to fetch a favicon (see bug 467828)
+        if (/^https?:/.test(iconURL))
+          iconURL = "moz-anno:favicon:" + iconURL;
+        m.setAttribute("image", iconURL);
+      }
+      m.setAttribute("class", "menuitem-iconic bookmark-item menuitem-with-favicon");
+      m.setAttribute("oncommand", "undoCloseWindow(" + i + ");");
+
+      // Set the targetURI attribute so it will be shown in tooltip.
+      // SessionStore uses one-based indexes, so we need to normalize them.
+      let activeIndex = (selectedTab.index || selectedTab.entries.length) - 1;
+      if (activeIndex >= 0 && selectedTab.entries[activeIndex])
+        m.setAttribute("targetURI", selectedTab.entries[activeIndex].url);
+
+      if (i == 0)
+        m.setAttribute("key", "key_undoCloseWindow");
+      undoPopup.appendChild(m);
+    }
+
+    // "Open All in Windows"
+    undoPopup.appendChild(document.createElement("menuseparator"));
+    let m = undoPopup.appendChild(document.createElement("menuitem"));
+    m.id = "menu_restoreAllWindows";
+    m.setAttribute("label", gNavigatorBundle.getString("menuRestoreAllWindows.label"));
+    m.setAttribute("oncommand",
+      "for (var i = 0; i < " + undoItems.length + "; i++) undoCloseWindow();");
+  },
+
+  toggleTabsFromOtherComputers: function PHM_toggleTabsFromOtherComputers() {
+    // This is a no-op if MOZ_SERVICES_SYNC isn't defined
+#ifdef MOZ_SERVICES_SYNC
+    // Enable/disable the Tabs From Other Computers menu. Some of the menus handled
+    // by HistoryMenu do not have this menuitem.
+    let menuitem = this._rootElt.getElementsByClassName("syncTabsMenuItem")[0];
+    if (!menuitem)
+      return;
+
+    // If Sync isn't configured yet, then don't show the menuitem.
+    if (Weave.Status.checkSetup() == Weave.CLIENT_NOT_CONFIGURED ||
+        Weave.Svc.Prefs.get("firstSync", "") == "notReady") {
+      menuitem.setAttribute("hidden", true);
+      return;
+    }
+
+    // The tabs engine might never be inited (if services.sync.registerEngines
+    // is modified), so make sure we avoid undefined errors.
+    let enabled = Weave.Service.isLoggedIn &&
+                  Weave.Service.engineManager.get("tabs") &&
+                  Weave.Service.engineManager.get("tabs").enabled;
+    menuitem.setAttribute("disabled", !enabled);
+    menuitem.setAttribute("hidden", false);
+#endif
+  },
+
+  _onPopupShowing: function HM__onPopupShowing(aEvent) {
+    PlacesMenu.prototype._onPopupShowing.apply(this, arguments);
+
+    // Don't handle events for submenus.
+    if (aEvent.target != aEvent.currentTarget)
+      return;
+
+    this.toggleRestoreLastSession();
+    this.toggleRecentlyClosedTabs();
+    this.toggleRecentlyClosedWindows();
+    this.toggleTabsFromOtherComputers();
+  },
+
+  _onCommand: function HM__onCommand(aEvent) {
+    let placesNode = aEvent.target._placesNode;
+    if (placesNode) {
+      if (!PrivateBrowsingUtils.isWindowPrivate(window))
+        PlacesUIUtils.markPageAsTyped(placesNode.uri);
+      openUILink(placesNode.uri, aEvent, { ignoreAlt: true });
+    }
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// BookmarksEventHandler
+
+/**
+ * Functions for handling events in the Bookmarks Toolbar and menu.
+ */
+var BookmarksEventHandler = {
+  /**
+   * Handler for click event for an item in the bookmarks toolbar or menu.
+   * Menus and submenus from the folder buttons bubble up to this handler.
+   * Left-click is handled in the onCommand function.
+   * When items are middle-clicked (or clicked with modifier), open in tabs.
+   * If the click came through a menu, close the menu.
+   * @param aEvent
+   *        DOMEvent for the click
+   * @param aView
+   *        The places view which aEvent should be associated with.
+   */
+  onClick: function BEH_onClick(aEvent, aView) {
+    // Only handle middle-click or left-click with modifiers.
+#ifdef XP_MACOSX
+    var modifKey = aEvent.metaKey || aEvent.shiftKey;
+#else
+    var modifKey = aEvent.ctrlKey || aEvent.shiftKey;
+#endif
+    if (aEvent.button == 2 || (aEvent.button == 0 && !modifKey))
+      return;
+
+    var target = aEvent.originalTarget;
+    // If this event bubbled up from a menu or menuitem, close the menus.
+    // Do this before opening tabs, to avoid hiding the open tabs confirm-dialog.
+    if (target.localName == "menu" || target.localName == "menuitem") {
+      for (node = target.parentNode; node; node = node.parentNode) {
+        if (node.localName == "menupopup")
+          node.hidePopup();
+        else if (node.localName != "menu" &&
+                 node.localName != "splitmenu" &&
+                 node.localName != "hbox" &&
+                 node.localName != "vbox" )
+          break;
+      }
+    }
+
+    if (target._placesNode && PlacesUtils.nodeIsContainer(target._placesNode)) {
+      // Don't open the root folder in tabs when the empty area on the toolbar
+      // is middle-clicked or when a non-bookmark item except for Open in Tabs)
+      // in a bookmarks menupopup is middle-clicked.
+      if (target.localName == "menu" || target.localName == "toolbarbutton")
+        PlacesUIUtils.openContainerNodeInTabs(target._placesNode, aEvent, aView);
+    }
+    else if (aEvent.button == 1) {
+      // left-clicks with modifier are already served by onCommand
+      this.onCommand(aEvent, aView);
+    }
+  },
+
+  /**
+   * Handler for command event for an item in the bookmarks toolbar.
+   * Menus and submenus from the folder buttons bubble up to this handler.
+   * Opens the item.
+   * @param aEvent 
+   *        DOMEvent for the command
+   * @param aView
+   *        The places view which aEvent should be associated with.
+   */
+  onCommand: function BEH_onCommand(aEvent, aView) {
+    var target = aEvent.originalTarget;
+    if (target._placesNode)
+      PlacesUIUtils.openNodeWithEvent(target._placesNode, aEvent, aView);
+  },
+
+  fillInBHTooltip: function BEH_fillInBHTooltip(aDocument, aEvent) {
+    var node;
+    var cropped = false;
+    var targetURI;
+
+    if (aDocument.tooltipNode.localName == "treechildren") {
+      var tree = aDocument.tooltipNode.parentNode;
+      var tbo = tree.treeBoxObject;
+      var cell = tbo.getCellAt(aEvent.clientX, aEvent.clientY);
+      if (cell.row == -1)
+        return false;
+      node = tree.view.nodeForTreeIndex(cell.row);
+      cropped = tbo.isCellCropped(cell.row, cell.col);
+    }
+    else {
+      // Check whether the tooltipNode is a Places node.
+      // In such a case use it, otherwise check for targetURI attribute.
+      var tooltipNode = aDocument.tooltipNode;
+      if (tooltipNode._placesNode)
+        node = tooltipNode._placesNode;
+      else {
+        // This is a static non-Places node.
+        targetURI = tooltipNode.getAttribute("targetURI");
+      }
+    }
+
+    if (!node && !targetURI)
+      return false;
+
+    // Show node.label as tooltip's title for non-Places nodes.
+    var title = node ? node.title : tooltipNode.label;
+
+    // Show URL only for Places URI-nodes or nodes with a targetURI attribute.
+    var url;
+    if (targetURI || PlacesUtils.nodeIsURI(node))
+      url = targetURI || node.uri;
+
+    // Show tooltip for containers only if their title is cropped.
+    if (!cropped && !url)
+      return false;
+
+    var tooltipTitle = aDocument.getElementById("bhtTitleText");
+    tooltipTitle.hidden = (!title || (title == url));
+    if (!tooltipTitle.hidden)
+      tooltipTitle.textContent = title;
+
+    var tooltipUrl = aDocument.getElementById("bhtUrlText");
+    tooltipUrl.hidden = !url;
+    if (!tooltipUrl.hidden)
+      tooltipUrl.value = url;
+
+    // Show tooltip.
+    return true;
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// PlacesMenuDNDHandler
+
+// Handles special drag and drop functionality for Places menus that are not
+// part of a Places view (e.g. the bookmarks menu in the menubar).
+var PlacesMenuDNDHandler = {
+  _springLoadDelay: 350, // milliseconds
+  _loadTimer: null,
+  _closerTimer: null,
+
+  /**
+   * Called when the user enters the <menu> element during a drag.
+   * @param   event
+   *          The DragEnter event that spawned the opening. 
+   */
+  onDragEnter: function PMDH_onDragEnter(event) {
+    // Opening menus in a Places popup is handled by the view itself.
+    if (!this._isStaticContainer(event.target))
+      return;
+
+    let popup = event.target.lastChild;
+    if (this._loadTimer || popup.state === "showing" || popup.state === "open")
+      return;
+
+    this._loadTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    this._loadTimer.initWithCallback(() => {
+      this._loadTimer = null;
+      popup.setAttribute("autoopened", "true");
+      popup.showPopup(popup);
+    }, this._springLoadDelay, Ci.nsITimer.TYPE_ONE_SHOT);
+    event.preventDefault();
+    event.stopPropagation();
+  },
+
+  /**
+   * Handles dragleave on the <menu> element.
+   * @returns true if the element is a container element (menu or 
+   *          menu-toolbarbutton), false otherwise.
+   */
+  onDragLeave: function PMDH_onDragLeave(event) {
+    // Handle menu-button separate targets.
+    if (event.relatedTarget === event.currentTarget ||
+        event.relatedTarget.parentNode === event.currentTarget)
+      return;
+
+    // Closing menus in a Places popup is handled by the view itself.
+    if (!this._isStaticContainer(event.target))
+      return;
+
+    let popup = event.target.lastChild;
+
+    if (this._loadTimer) {
+      this._loadTimer.cancel();
+      this._loadTimer = null;
+    }
+    this._closeTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    this._closeTimer.initWithCallback(function() {
+      this._closeTimer = null;
+      let node = PlacesControllerDragHelper.currentDropTarget;
+      let inHierarchy = false;
+      while (node && !inHierarchy) {
+        inHierarchy = node == event.target;
+        node = node.parentNode;
+      }
+      if (!inHierarchy && popup && popup.hasAttribute("autoopened")) {
+        popup.removeAttribute("autoopened");
+        popup.hidePopup();
+      }
+    }, this._springLoadDelay, Ci.nsITimer.TYPE_ONE_SHOT);
+  },
+
+  /**
+   * Determines if a XUL element represents a static container.
+   * @returns true if the element is a container element (menu or 
+   *`         menu-toolbarbutton), false otherwise.
+   */
+  _isStaticContainer: function PMDH__isContainer(node) {
+    let isMenu = node.localName == "menu" ||
+                 (node.localName == "toolbarbutton" &&
+                  (node.getAttribute("type") == "menu" ||
+                   node.getAttribute("type") == "menu-button"));
+    let isStatic = !("_placesNode" in node) && node.lastChild &&
+                   node.lastChild.hasAttribute("placespopup") &&
+                   !node.parentNode.hasAttribute("placespopup");
+    return isMenu && isStatic;
+  },
+
+  /**
+   * Called when the user drags over the <menu> element.
+   * @param   event
+   *          The DragOver event. 
+   */
+  onDragOver: function PMDH_onDragOver(event) {
+    let ip = new InsertionPoint(PlacesUtils.bookmarksMenuFolderId,
+                                PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                Ci.nsITreeView.DROP_ON);
+    if (ip && PlacesControllerDragHelper.canDrop(ip, event.dataTransfer))
+      event.preventDefault();
+
+    event.stopPropagation();
+  },
+
+  /**
+   * Called when the user drops on the <menu> element.
+   * @param   event
+   *          The Drop event. 
+   */
+  onDrop: function PMDH_onDrop(event) {
+    // Put the item at the end of bookmark menu.
+    let ip = new InsertionPoint(PlacesUtils.bookmarksMenuFolderId,
+                                PlacesUtils.bookmarks.DEFAULT_INDEX,
+                                Ci.nsITreeView.DROP_ON);
+    PlacesControllerDragHelper.onDrop(ip, event.dataTransfer);
+    event.stopPropagation();
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// PlacesToolbarHelper
+
+/**
+ * This object handles the initialization and uninitialization of the bookmarks
+ * toolbar.
+ */
+var PlacesToolbarHelper = {
+  _place: "place:folder=TOOLBAR",
+
+  get _viewElt() {
+    return document.getElementById("PlacesToolbar");
+  },
+
+  init: function PTH_init() {
+    let viewElt = this._viewElt;
+    if (!viewElt || viewElt._placesView)
+      return;
+
+    // If the bookmarks toolbar item is hidden because the parent toolbar is
+    // collapsed or hidden (i.e. in a popup), spare the initialization.  Also,
+    // there is no need to initialize the toolbar if customizing because
+    // init() will be called when the customization is done.
+    let toolbar = viewElt.parentNode.parentNode;
+    if (toolbar.collapsed ||
+        getComputedStyle(toolbar, "").display == "none" ||
+        this._isCustomizing)
+      return;
+
+    new PlacesToolbar(this._place);
+  },
+
+  customizeStart: function PTH_customizeStart() {
+    let viewElt = this._viewElt;
+    if (viewElt && viewElt._placesView)
+      viewElt._placesView.uninit();
+
+    this._isCustomizing = true;
+  },
+
+  customizeDone: function PTH_customizeDone() {
+    this._isCustomizing = false;
+    this.init();
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// BookmarkingUI
+
+/**
+ * Handles the bookmarks star button in the URL bar, as well as the bookmark
+ * menu button.
+ */
+
+var BookmarkingUI = {
+  get button() {
+    if (!this._button) {
+      this._button = document.getElementById("bookmarks-menu-button");
+    }
+    return this._button;
+  },
+
+  get star() {
+    if (!this._star) {
+      this._star = document.getElementById("star-button");
+    }
+    return this._star;
+  },
+
+  get anchor() {
+    if (this.star && isElementVisible(this.star)) {
+      // Anchor to the icon, so the panel looks more natural.
+      return this.star;
+    }
+    return null;
+  },
+
+  STATUS_UPDATING: -1,
+  STATUS_UNSTARRED: 0,
+  STATUS_STARRED: 1,
+  get status() {
+    if (this._pendingStmt)
+      return this.STATUS_UPDATING;
+    return this.star &&
+           this.star.hasAttribute("starred") ? this.STATUS_STARRED
+                                             : this.STATUS_UNSTARRED;
+  },
+
+  get _starredTooltip()
+  {
+    delete this._starredTooltip;
+    return this._starredTooltip =
+      gNavigatorBundle.getString("starButtonOn.tooltip");
+  },
+
+  get _unstarredTooltip()
+  {
+    delete this._unstarredTooltip;
+    return this._unstarredTooltip =
+      gNavigatorBundle.getString("starButtonOff.tooltip");
+  },
+
+  /**
+   * The popup contents must be updated when the user customizes the UI, or
+   * changes the personal toolbar collapsed status.  In such a case, any needed
+   * change should be handled in the popupshowing helper, for performance
+   * reasons.
+   */
+  _popupNeedsUpdate: true,
+  onToolbarVisibilityChange: function BUI_onToolbarVisibilityChange() {
+    this._popupNeedsUpdate = true;
+  },
+
+  onPopupShowing: function BUI_onPopupShowing(event) {
+    // Don't handle events for submenus.
+    if (event.target != event.currentTarget)
+      return;
+
+    if (!this._popupNeedsUpdate)
+      return;
+    this._popupNeedsUpdate = false;
+
+    let popup = event.target;
+    let getPlacesAnonymousElement =
+      aAnonId => document.getAnonymousElementByAttribute(popup.parentNode,
+                                                         "placesanonid",
+                                                         aAnonId);
+
+    let viewToolbarMenuitem = getPlacesAnonymousElement("view-toolbar");
+    if (viewToolbarMenuitem) {
+      // Update View bookmarks toolbar checkbox menuitem.
+      let personalToolbar = document.getElementById("PersonalToolbar");
+      viewToolbarMenuitem.setAttribute("checked", !personalToolbar.collapsed);
+    }
+
+    let toolbarMenuitem = getPlacesAnonymousElement("toolbar-autohide");
+    if (toolbarMenuitem) {
+      // If bookmarks items are visible, hide Bookmarks Toolbar menu and the
+      // separator after it.
+      toolbarMenuitem.collapsed = toolbarMenuitem.nextSibling.collapsed =
+        isElementVisible(document.getElementById("personal-bookmarks"));
+    }
+  },
+
+  /**
+   * Handles star styling based on page proxy state changes.
+   */
+  onPageProxyStateChanged: function BUI_onPageProxyStateChanged(aState) {
+    if (!this.star) {
+      return;
+    }
+
+    if (aState == "invalid") {
+      this.star.setAttribute("disabled", "true");
+      this.star.removeAttribute("starred");
+    }
+    else {
+      this.star.removeAttribute("disabled");
+    }
+  },
+
+  _updateToolbarStyle: function BUI__updateToolbarStyle() {
+    if (!this.button) {
+      return;
+    }
+
+    let personalToolbar = document.getElementById("PersonalToolbar");
+    let onPersonalToolbar = this.button.parentNode == personalToolbar ||
+                            this.button.parentNode.parentNode == personalToolbar;
+
+    if (onPersonalToolbar) {
+      this.button.classList.add("bookmark-item");
+      this.button.classList.remove("toolbarbutton-1");
+    }
+    else {
+      this.button.classList.remove("bookmark-item");
+      this.button.classList.add("toolbarbutton-1");
+    }
+  },
+
+  _uninitView: function BUI__uninitView() {
+    // When an element with a placesView attached is removed and re-inserted,
+    // XBL reapplies the binding causing any kind of issues and possible leaks,
+    // so kill current view and let popupshowing generate a new one.
+    if (this.button && this.button._placesView) {
+      this.button._placesView.uninit();
+    }
+    // Also uninit the main menubar placesView, since it would have the same
+    // issues.
+    let menubar = document.getElementById("bookmarksMenu");
+    if (menubar && menubar._placesView) {
+      menubar._placesView.uninit();
+    }
+  },
+
+  customizeStart: function BUI_customizeStart() {
+    this._uninitView();
+  },
+
+  customizeChange: function BUI_customizeChange() {
+    this._updateToolbarStyle();
+  },
+
+  customizeDone: function BUI_customizeDone() {
+    delete this._button;
+    this.onToolbarVisibilityChange();
+    this._updateToolbarStyle();
+  },
+
+  _hasBookmarksObserver: false,
+  uninit: function BUI_uninit() {
+    this._uninitView();
+
+    if (this._hasBookmarksObserver) {
+      PlacesUtils.removeLazyBookmarkObserver(this);
+    }
+
+    if (this._pendingStmt) {
+      this._pendingStmt.cancel();
+      delete this._pendingStmt;
+    }
+  },
+
+  onLocationChange: function BUI_onLocationChange() {
+    if (this._uri && gBrowser.currentURI.equals(this._uri)) {
+      return;
+    }
+    this.updateStarState();
+  },
+
+  updateStarState: function BUI_updateStarState() {
+    // Reset tracked values.
+    this._uri = gBrowser.currentURI;
+    this._itemIds = [];
+
+    if (this._pendingStmt) {
+      this._pendingStmt.cancel();
+      delete this._pendingStmt;
+    }
+
+    // We can load about:blank before the actual page, but there is no point in handling that page.
+    if (isBlankPageURL(this._uri.spec)) {
+      return;
+    }
+
+    this._pendingStmt = PlacesUtils.asyncGetBookmarkIds(this._uri, (aItemIds, aURI) => {
+      // Safety check that the bookmarked URI equals the tracked one.
+      if (!aURI.equals(this._uri)) {
+        Components.utils.reportError("BookmarkingUI did not receive current URI");
+        return;
+      }
+
+      // It's possible that onItemAdded gets called before the async statement
+      // calls back.  For such an edge case, retain all unique entries from both
+      // arrays.
+      this._itemIds = this._itemIds.filter(
+        function (id) aItemIds.indexOf(id) == -1
+      ).concat(aItemIds);
+
+      this._updateStar();
+
+      // Start observing bookmarks if needed.
+      if (!this._hasBookmarksObserver) {
+        try {
+          PlacesUtils.addLazyBookmarkObserver(this);
+          this._hasBookmarksObserver = true;
+        } catch(ex) {
+          Components.utils.reportError("BookmarkingUI failed adding a bookmarks observer: " + ex);
+        }
+      }
+
+      delete this._pendingStmt;
+    }, this);
+  },
+
+  _updateStar: function BUI__updateStar() {
+    if (!this.star) {
+      return;
+    }
+
+    if (this._itemIds.length > 0) {
+      this.star.setAttribute("starred", "true");
+      this.star.setAttribute("tooltiptext", this._starredTooltip);
+    }
+    else {
+      this.star.removeAttribute("starred");
+      this.star.setAttribute("tooltiptext", this._unstarredTooltip);
+    }
+  },
+
+  onCommand: function BUI_onCommand(aEvent) {
+    if (aEvent.target != aEvent.currentTarget) {
+      return;
+    }
+    // Ignore clicks on the star if we are updating its state.
+    if (!this._pendingStmt) {
+      PlacesCommandHook.bookmarkCurrentPage(this._itemIds.length > 0);
+    }
+  },
+
+  // nsINavBookmarkObserver
+  onItemAdded: function BUI_onItemAdded(aItemId, aParentId, aIndex, aItemType,
+                                        aURI) {
+    if (aURI && aURI.equals(this._uri)) {
+      // If a new bookmark has been added to the tracked uri, register it.
+      if (this._itemIds.indexOf(aItemId) == -1) {
+        this._itemIds.push(aItemId);
+        this._updateStar();
+      }
+    }
+  },
+
+  onItemRemoved: function BUI_onItemRemoved(aItemId) {
+    let index = this._itemIds.indexOf(aItemId);
+    // If one of the tracked bookmarks has been removed, unregister it.
+    if (index != -1) {
+      this._itemIds.splice(index, 1);
+      this._updateStar();
+    }
+  },
+
+  onItemChanged: function BUI_onItemChanged(aItemId, aProperty,
+                                            aIsAnnotationProperty, aNewValue) {
+    if (aProperty == "uri") {
+      let index = this._itemIds.indexOf(aItemId);
+      // If the changed bookmark was tracked, check if it is now pointing to
+      // a different uri and unregister it.
+      if (index != -1 && aNewValue != this._uri.spec) {
+        this._itemIds.splice(index, 1);
+        this._updateStar();
+      }
+      // If another bookmark is now pointing to the tracked uri, register it.
+      else if (index == -1 && aNewValue == this._uri.spec) {
+        this._itemIds.push(aItemId);
+        this._updateStar();
+      }
+    }
+  },
+
+  onBeginUpdateBatch: function () {},
+  onEndUpdateBatch: function () {},
+  onBeforeItemRemoved: function () {},
+  onItemVisited: function () {},
+  onItemMoved: function () {},
+
+  QueryInterface: XPCOMUtils.generateQI([
+    Ci.nsINavBookmarkObserver
+  ])
+};
diff --git a/webbrowser/base/content/browser-plugins.js b/webbrowser/base/content/browser-plugins.js
new file mode 100644
index 0000000..8382682
--- /dev/null
+++ b/webbrowser/base/content/browser-plugins.js
@@ -0,0 +1,781 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+const kPrefSessionPersistMinutes = "plugin.sessionPermissionNow.intervalInMinutes";
+const kPrefPersistentDays = "plugin.persistentPermissionAlways.intervalInDays";
+
+var gPluginHandler = {
+  PLUGIN_SCRIPTED_STATE_NONE: 0,
+  PLUGIN_SCRIPTED_STATE_FIRED: 1,
+  PLUGIN_SCRIPTED_STATE_DONE: 2,
+
+  getPluginUI: function (plugin, anonid) {
+    return plugin.ownerDocument.
+           getAnonymousElementByAttribute(plugin, "anonid", anonid);
+  },
+
+  _getPluginInfo: function (pluginElement) {
+    let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
+    pluginElement.QueryInterface(Ci.nsIObjectLoadingContent);
+
+    let tagMimetype;
+    let pluginName = gNavigatorBundle.getString("pluginInfo.unknownPlugin");
+    let pluginTag = null;
+    let permissionString = null;
+    let fallbackType = null;
+    let blocklistState = null;
+
+    if (pluginElement instanceof HTMLAppletElement) {
+      tagMimetype = "application/x-java-vm";
+    } else {
+      tagMimetype = pluginElement.actualType;
+
+      if (tagMimetype == "") {
+        tagMimetype = pluginElement.type;
+      }
+    }
+
+    if (gPluginHandler.isKnownPlugin(pluginElement)) {
+      pluginTag = pluginHost.getPluginTagForType(pluginElement.actualType);
+      pluginName = gPluginHandler.makeNicePluginName(pluginTag.name);
+
+      permissionString = pluginHost.getPermissionStringForType(pluginElement.actualType);
+      fallbackType = pluginElement.defaultFallbackType;
+      blocklistState = pluginHost.getBlocklistStateForType(pluginElement.actualType);
+      // Make state-softblocked == state-notblocked for our purposes,
+      // they have the same UI. STATE_OUTDATED should not exist for plugin
+      // items, but let's alias it anyway, just in case.
+      if (blocklistState == Ci.nsIBlocklistService.STATE_SOFTBLOCKED ||
+          blocklistState == Ci.nsIBlocklistService.STATE_OUTDATED) {
+        blocklistState = Ci.nsIBlocklistService.STATE_NOT_BLOCKED;
+      }
+    }
+
+    return { mimetype: tagMimetype,
+             pluginName: pluginName,
+             pluginTag: pluginTag,
+             permissionString: permissionString,
+             fallbackType: fallbackType,
+             blocklistState: blocklistState,
+           };
+  },
+
+  // Map the plugin's name to a filtered version more suitable for user UI.
+  makeNicePluginName : function (aName) {
+    if (aName == "Shockwave Flash")
+      return "Adobe Flash";
+
+    // Clean up the plugin name by stripping off any trailing version numbers
+    // or "plugin". EG, "Foo Bar Plugin 1.23_02" --> "Foo Bar"
+    // Do this by first stripping the numbers, etc. off the end, and then
+    // removing "Plugin" (and then trimming to get rid of any whitespace).
+    // (Otherwise, something like "Java(TM) Plug-in 1.7.0_07" gets mangled)
+    let newName = aName.replace(/[\s\d\.\-\_\(\)]+$/, "").replace(/\bplug-?in\b/i, "").trim();
+    return newName;
+  },
+
+  isTooSmall : function (plugin, overlay) {
+    // Is the <object>'s size too small to hold what we want to show?
+    let pluginRect = plugin.getBoundingClientRect();
+    // XXX bug 446693. The text-shadow on the submitted-report text at
+    //     the bottom causes scrollHeight to be larger than it should be.
+    // Clamp width/height to properly show CTP overlay on different
+    // zoom levels when embedded in iframes (rounding bug). (Bug 972237)
+    let overflows = (overlay.scrollWidth > Math.ceil(pluginRect.width)) ||
+                    (overlay.scrollHeight - 5 > Math.ceil(pluginRect.height));
+    return overflows;
+  },
+
+  addLinkClickCallback: function (linkNode, callbackName /*callbackArgs...*/) {
+    // XXX just doing (callback)(arg) was giving a same-origin error. bug?
+    let self = this;
+    let callbackArgs = Array.prototype.slice.call(arguments).slice(2);
+    linkNode.addEventListener("click",
+                              function(evt) {
+                                if (!evt.isTrusted)
+                                  return;
+                                evt.preventDefault();
+                                if (callbackArgs.length == 0)
+                                  callbackArgs = [ evt ];
+                                (self[callbackName]).apply(self, callbackArgs);
+                              },
+                              true);
+
+    linkNode.addEventListener("keydown",
+                              function(evt) {
+                                if (!evt.isTrusted)
+                                  return;
+                                if (evt.keyCode == evt.DOM_VK_RETURN) {
+                                  evt.preventDefault();
+                                  if (callbackArgs.length == 0)
+                                    callbackArgs = [ evt ];
+                                  evt.preventDefault();
+                                  (self[callbackName]).apply(self, callbackArgs);
+                                }
+                              },
+                              true);
+  },
+
+  // Helper to get the binding handler type from a plugin object
+  _getBindingType : function(plugin) {
+    if (!(plugin instanceof Ci.nsIObjectLoadingContent))
+      return null;
+
+    switch (plugin.pluginFallbackType) {
+      case Ci.nsIObjectLoadingContent.PLUGIN_UNSUPPORTED:
+        return "PluginNotFound";
+      case Ci.nsIObjectLoadingContent.PLUGIN_DISABLED:
+        return "PluginDisabled";
+      case Ci.nsIObjectLoadingContent.PLUGIN_BLOCKLISTED:
+        return "PluginBlocklisted";
+      case Ci.nsIObjectLoadingContent.PLUGIN_OUTDATED:
+        return "PluginOutdated";
+      case Ci.nsIObjectLoadingContent.PLUGIN_CLICK_TO_PLAY:
+        return "PluginClickToPlay";
+      case Ci.nsIObjectLoadingContent.PLUGIN_VULNERABLE_UPDATABLE:
+        return "PluginVulnerableUpdatable";
+      case Ci.nsIObjectLoadingContent.PLUGIN_VULNERABLE_NO_UPDATE:
+        return "PluginVulnerableNoUpdate";
+      case Ci.nsIObjectLoadingContent.PLUGIN_PLAY_PREVIEW:
+        return "PluginPlayPreview";
+      default:
+        // Not all states map to a handler
+        return null;
+    }
+  },
+
+  handleEvent : function(event) {
+    let plugin;
+    let doc;
+
+    let eventType = event.type;
+    if (eventType === "PluginRemoved") {
+      doc = event.target;
+    }
+    else {
+      plugin = event.target;
+      doc = plugin.ownerDocument;
+
+      if (!(plugin instanceof Ci.nsIObjectLoadingContent))
+        return;
+    }
+
+    if (eventType == "PluginBindingAttached") {
+      // The plugin binding fires this event when it is created.
+      // As an untrusted event, ensure that this object actually has a binding
+      // and make sure we don't handle it twice
+      let overlay = this.getPluginUI(plugin, "main");
+      if (!overlay || overlay._bindingHandled) {
+        return;
+      }
+      overlay._bindingHandled = true;
+
+      // Lookup the handler for this binding
+      eventType = this._getBindingType(plugin);
+      if (!eventType) {
+        // Not all bindings have handlers
+        return;
+      }
+    }
+
+    let shouldShowNotification = false;
+    let browser = gBrowser.getBrowserForDocument(doc.defaultView.top.document);
+    if (!browser)
+      return;
+
+    switch (eventType) {
+      case "PluginCrashed":
+        this.pluginInstanceCrashed(plugin, event);
+        break;
+
+      case "PluginNotFound":
+        /* No action (plugin finder obsolete) */
+        break;
+
+      case "PluginBlocklisted":
+      case "PluginOutdated":
+        shouldShowNotification = true;
+        break;
+
+      case "PluginVulnerableUpdatable":
+        let updateLink = this.getPluginUI(plugin, "checkForUpdatesLink");
+        this.addLinkClickCallback(updateLink, "openPluginUpdatePage");
+        /* FALLTHRU */
+
+      case "PluginVulnerableNoUpdate":
+      case "PluginClickToPlay":
+        this._handleClickToPlayEvent(plugin);
+        let overlay = this.getPluginUI(plugin, "main");
+        let pluginName = this._getPluginInfo(plugin).pluginName;
+        let messageString = gNavigatorBundle.getFormattedString("PluginClickToActivate", [pluginName]);
+        let overlayText = this.getPluginUI(plugin, "clickToPlay");
+        overlayText.textContent = messageString;
+        if (eventType == "PluginVulnerableUpdatable" ||
+            eventType == "PluginVulnerableNoUpdate") {
+          let vulnerabilityString = gNavigatorBundle.getString(eventType);
+          let vulnerabilityText = this.getPluginUI(plugin, "vulnerabilityStatus");
+          vulnerabilityText.textContent = vulnerabilityString;
+        }
+        shouldShowNotification = true;
+        break;
+
+      case "PluginPlayPreview":
+        this._handlePlayPreviewEvent(plugin);
+        break;
+
+      case "PluginDisabled":
+        let manageLink = this.getPluginUI(plugin, "managePluginsLink");
+        this.addLinkClickCallback(manageLink, "managePlugins");
+        shouldShowNotification = true;
+        break;
+
+      case "PluginInstantiated":
+        //Pale Moon: don't show the indicator when plugins are enabled/allowed
+        if (gPrefService.getBoolPref("plugins.always_show_indicator")) {
+          shouldShowNotification = true;
+        }
+        break;
+      case "PluginRemoved":
+        shouldShowNotification = true;
+        break;
+    }
+
+    // Show the in-content UI if it's not too big. The crashed plugin handler already did this.
+    if (eventType != "PluginCrashed" && eventType != "PluginRemoved") {
+      let overlay = this.getPluginUI(plugin, "main");
+      if (overlay != null) {
+        if (!this.isTooSmall(plugin, overlay)) {
+          overlay.style.visibility = "visible";
+        }
+        plugin.addEventListener("overflow", function(event) {
+          overlay.style.visibility = "hidden";
+        });
+        plugin.addEventListener("underflow", function(event) {
+          // this is triggered if only one dimension underflows,
+          // the other dimension might still overflow
+          if (!gPluginHandler.isTooSmall(plugin, overlay)) {
+            overlay.style.visibility = "visible";
+          }
+        });
+      }
+    }
+
+    // Only show the notification after we've done the isTooSmall check, so
+    // that the notification can decide whether to show the "alert" icon
+    if (shouldShowNotification) {
+      this._showClickToPlayNotification(browser);
+    }
+  },
+
+  isKnownPlugin: function PH_isKnownPlugin(objLoadingContent) {
+    return (objLoadingContent.getContentTypeForMIMEType(objLoadingContent.actualType) ==
+            Ci.nsIObjectLoadingContent.TYPE_PLUGIN);
+  },
+
+  canActivatePlugin: function PH_canActivatePlugin(objLoadingContent) {
+    // if this isn't a known plugin, we can't activate it
+    // (this also guards pluginHost.getPermissionStringForType against
+    // unexpected input)
+    if (!gPluginHandler.isKnownPlugin(objLoadingContent))
+      return false;
+
+    let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
+    let permissionString = pluginHost.getPermissionStringForType(objLoadingContent.actualType);
+    let principal = objLoadingContent.ownerDocument.defaultView.top.document.nodePrincipal;
+    let pluginPermission = Services.perms.testPermissionFromPrincipal(principal, permissionString);
+
+    let isFallbackTypeValid =
+      objLoadingContent.pluginFallbackType >= Ci.nsIObjectLoadingContent.PLUGIN_CLICK_TO_PLAY &&
+      objLoadingContent.pluginFallbackType <= Ci.nsIObjectLoadingContent.PLUGIN_VULNERABLE_NO_UPDATE;
+
+    if (objLoadingContent.pluginFallbackType == Ci.nsIObjectLoadingContent.PLUGIN_PLAY_PREVIEW) {
+      // checking if play preview is subject to CTP rules
+      let playPreviewInfo = pluginHost.getPlayPreviewInfo(objLoadingContent.actualType);
+      isFallbackTypeValid = !playPreviewInfo.ignoreCTP;
+    }
+
+    return !objLoadingContent.activated &&
+           pluginPermission != Ci.nsIPermissionManager.DENY_ACTION &&
+           isFallbackTypeValid;
+  },
+
+  hideClickToPlayOverlay: function(aPlugin) {
+    let overlay = this.getPluginUI(aPlugin, "main");
+    if (overlay)
+      overlay.style.visibility = "hidden";
+  },
+
+  stopPlayPreview: function PH_stopPlayPreview(aPlugin, aPlayPlugin) {
+    let objLoadingContent = aPlugin.QueryInterface(Ci.nsIObjectLoadingContent);
+    if (objLoadingContent.activated)
+      return;
+
+    if (aPlayPlugin)
+      objLoadingContent.playPlugin();
+    else
+      objLoadingContent.cancelPlayPreview();
+  },
+
+  // Callback for user clicking on a disabled plugin
+  managePlugins: function (aEvent) {
+    BrowserOpenAddonsMgr("addons://list/plugin");
+  },
+
+  // Callback for user clicking on the link in a click-to-play plugin
+  // (where the plugin has an update)
+  openPluginUpdatePage: function (aEvent) {
+    openURL(Services.urlFormatter.formatURLPref("plugins.update.url"));
+  },
+
+  // Callback for user clicking a "reload page" link
+  reloadPage: function (browser) {
+    browser.reload();
+  },
+
+  // Callback for user clicking the help icon
+  openHelpPage: function () {
+    openHelpLink("plugin-crashed", false);
+  },
+
+  // Event listener for click-to-play plugins.
+  _handleClickToPlayEvent: function PH_handleClickToPlayEvent(aPlugin) {
+    let doc = aPlugin.ownerDocument;
+    let browser = gBrowser.getBrowserForDocument(doc.defaultView.top.document);
+    let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
+    let objLoadingContent = aPlugin.QueryInterface(Ci.nsIObjectLoadingContent);
+    // guard against giving pluginHost.getPermissionStringForType a type
+    // not associated with any known plugin
+    if (!gPluginHandler.isKnownPlugin(objLoadingContent))
+      return;
+    let permissionString = pluginHost.getPermissionStringForType(objLoadingContent.actualType);
+    let principal = doc.defaultView.top.document.nodePrincipal;
+    let pluginPermission = Services.perms.testPermissionFromPrincipal(principal, permissionString);
+
+    let overlay = this.getPluginUI(aPlugin, "main");
+
+    if (pluginPermission == Ci.nsIPermissionManager.DENY_ACTION) {
+      if (overlay)
+        overlay.style.visibility = "hidden";
+      return;
+    }
+
+    if (overlay) {
+      overlay.addEventListener("click", gPluginHandler._overlayClickListener, true);
+      let closeIcon = gPluginHandler.getPluginUI(aPlugin, "closeIcon");
+      closeIcon.addEventListener("click", function(aEvent) {
+        if (aEvent.button == 0 && aEvent.isTrusted)
+          gPluginHandler.hideClickToPlayOverlay(aPlugin);
+      }, true);
+    }
+  },
+
+  _overlayClickListener: {
+    handleEvent: function PH_handleOverlayClick(aEvent) {
+      let plugin = document.getBindingParent(aEvent.target);
+      let contentWindow = plugin.ownerDocument.defaultView.top;
+      // gBrowser.getBrowserForDocument does not exist in the case where we
+      // drag-and-dropped a tab from a window containing only that tab. In
+      // that case, the window gets destroyed.
+      let browser = gBrowser.getBrowserForDocument ?
+                      gBrowser.getBrowserForDocument(contentWindow.document) :
+                      null;
+      // If browser is null here, we've been drag-and-dropped from another
+      // window, and this is the wrong click handler.
+      if (!browser) {
+        aEvent.target.removeEventListener("click", gPluginHandler._overlayClickListener, true);
+        return;
+      }
+      let objLoadingContent = plugin.QueryInterface(Ci.nsIObjectLoadingContent);
+      // Have to check that the target is not the link to update the plugin
+      if (!(aEvent.originalTarget instanceof HTMLAnchorElement) &&
+          (aEvent.originalTarget.getAttribute('anonid') != 'closeIcon') &&
+          aEvent.button == 0 && aEvent.isTrusted) {
+        gPluginHandler._showClickToPlayNotification(browser, plugin);
+        aEvent.stopPropagation();
+        aEvent.preventDefault();
+      }
+    }
+  },
+
+  _handlePlayPreviewEvent: function PH_handlePlayPreviewEvent(aPlugin) {
+    let doc = aPlugin.ownerDocument;
+    let browser = gBrowser.getBrowserForDocument(doc.defaultView.top.document);
+    let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
+    let pluginInfo = this._getPluginInfo(aPlugin);
+    let playPreviewInfo = pluginHost.getPlayPreviewInfo(pluginInfo.mimetype);
+
+    let previewContent = this.getPluginUI(aPlugin, "previewPluginContent");
+    let iframe = previewContent.getElementsByClassName("previewPluginContentFrame")[0];
+    if (!iframe) {
+      // lazy initialization of the iframe
+      iframe = doc.createElementNS("http://www.w3.org/1999/xhtml", "iframe");
+      iframe.className = "previewPluginContentFrame";
+      previewContent.appendChild(iframe);
+
+      // Force a style flush, so that we ensure our binding is attached.
+      aPlugin.clientTop;
+    }
+    iframe.src = playPreviewInfo.redirectURL;
+
+    // MozPlayPlugin event can be dispatched from the extension chrome
+    // code to replace the preview content with the native plugin
+    previewContent.addEventListener("MozPlayPlugin", function playPluginHandler(aEvent) {
+      if (!aEvent.isTrusted)
+        return;
+
+      previewContent.removeEventListener("MozPlayPlugin", playPluginHandler, true);
+
+      let playPlugin = !aEvent.detail;
+      gPluginHandler.stopPlayPreview(aPlugin, playPlugin);
+
+      // cleaning up: removes overlay iframe from the DOM
+      let iframe = previewContent.getElementsByClassName("previewPluginContentFrame")[0];
+      if (iframe)
+        previewContent.removeChild(iframe);
+    }, true);
+
+    if (!playPreviewInfo.ignoreCTP) {
+      gPluginHandler._showClickToPlayNotification(browser);
+    }
+  },
+
+  reshowClickToPlayNotification: function PH_reshowClickToPlayNotification() {
+    let browser = gBrowser.selectedBrowser;
+    let contentWindow = browser.contentWindow;
+    let cwu = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                           .getInterface(Ci.nsIDOMWindowUtils);
+    let doc = contentWindow.document;
+    let plugins = cwu.plugins;
+    for (let plugin of plugins) {
+      let overlay = doc.getAnonymousElementByAttribute(plugin, "anonid", "main");
+      if (overlay)
+        overlay.removeEventListener("click", gPluginHandler._overlayClickListener, true);
+      let objLoadingContent = plugin.QueryInterface(Ci.nsIObjectLoadingContent);
+      if (gPluginHandler.canActivatePlugin(objLoadingContent))
+        gPluginHandler._handleClickToPlayEvent(plugin);
+    }
+    gPluginHandler._showClickToPlayNotification(browser);
+  },
+
+  _clickToPlayNotificationEventCallback: function PH_ctpEventCallback(event) {
+    if (event == "showing") {
+      gPluginHandler._makeCenterActions(this);
+    }
+    else if (event == "dismissed") {
+      // Once the popup is dismissed, clicking the icon should show the full
+      // list again
+      this.options.primaryPlugin = null;
+    }
+  },
+
+  _makeCenterActions: function PH_makeCenterActions(notification) {
+    let contentWindow = notification.browser.contentWindow;
+    let cwu = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                           .getInterface(Ci.nsIDOMWindowUtils);
+
+    let principal = contentWindow.document.nodePrincipal;
+
+    let centerActions = [];
+    let pluginsFound = new Set();
+    for (let plugin of cwu.plugins) {
+      plugin.QueryInterface(Ci.nsIObjectLoadingContent);
+      if (plugin.getContentTypeForMIMEType(plugin.actualType) != Ci.nsIObjectLoadingContent.TYPE_PLUGIN) {
+        continue;
+      }
+
+      let pluginInfo = this._getPluginInfo(plugin);
+      if (pluginInfo.permissionString === null) {
+        Components.utils.reportError("No permission string for active plugin.");
+        continue;
+      }
+      if (pluginsFound.has(pluginInfo.permissionString)) {
+        continue;
+      }
+      pluginsFound.add(pluginInfo.permissionString);
+
+      // Add the per-site permissions and details URLs to pluginInfo here
+      // because they are more expensive to compute and so we avoid it in
+      // the tighter loop above.
+      let permissionObj = Services.perms.
+        getPermissionObject(principal, pluginInfo.permissionString, false);
+      if (permissionObj) {
+        pluginInfo.pluginPermissionPrePath = permissionObj.principal.originNoSuffix;
+        pluginInfo.pluginPermissionType = permissionObj.expireType;
+      }
+      else {
+        pluginInfo.pluginPermissionPrePath = principal.originNoSuffix;
+        pluginInfo.pluginPermissionType = undefined;
+      }
+
+      let url;
+      // TODO: allow the blocklist to specify a better link, bug 873093
+      if (pluginInfo.blocklistState == Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE) {
+        url = Services.urlFormatter.formatURLPref("plugins.update.url");
+      }
+      else if (pluginInfo.blocklistState != Ci.nsIBlocklistService.STATE_NOT_BLOCKED) {
+        url = Services.blocklist.getPluginBlocklistURL(pluginInfo.pluginTag);
+      }
+      pluginInfo.detailsLink = url;
+
+      centerActions.push(pluginInfo);
+    }
+    centerActions.sort(function(a, b) {
+      return a.pluginName.localeCompare(b.pluginName);
+    });
+
+    notification.options.centerActions = centerActions;
+  },
+
+  /**
+   * Called from the plugin doorhanger to set the new permissions for a plugin
+   * and activate plugins if necessary.
+   * aNewState should be either "allownow" "allowalways" or "block"
+   */
+  _updatePluginPermission: function PH_setPermissionForPlugins(aNotification, aPluginInfo, aNewState) {
+    let permission;
+    let expireType;
+    let expireTime;
+
+    switch (aNewState) {
+      case "allownow":
+        permission = Ci.nsIPermissionManager.ALLOW_ACTION;
+        expireType = Ci.nsIPermissionManager.EXPIRE_SESSION;
+        expireTime = Date.now() + Services.prefs.getIntPref(kPrefSessionPersistMinutes) * 60 * 1000;
+        break;
+
+      case "allowalways":
+        permission = Ci.nsIPermissionManager.ALLOW_ACTION;
+        expireType = Ci.nsIPermissionManager.EXPIRE_TIME;
+        expireTime = Date.now() +
+          Services.prefs.getIntPref(kPrefPersistentDays) * 24 * 60 * 60 * 1000;
+        break;
+
+      case "block":
+        permission = Ci.nsIPermissionManager.PROMPT_ACTION;
+        expireType = Ci.nsIPermissionManager.EXPIRE_NEVER;
+        expireTime = 0;
+        break;
+
+      // In case a plugin has already been allowed in another tab, the "continue allowing" button
+      // shouldn't change any permissions but should run the plugin-enablement code below.
+      case "continue":
+        break;
+
+      default:
+        Cu.reportError(Error("Unexpected plugin state: " + aNewState));
+        return;
+    }
+
+    let browser = aNotification.browser;
+    let contentWindow = browser.contentWindow;
+    if (aNewState != "continue") {
+      let principal = contentWindow.document.nodePrincipal;
+      Services.perms.addFromPrincipal(principal, aPluginInfo.permissionString,
+                                      permission, expireType, expireTime);
+
+      if (aNewState == "block") {
+        return;
+      }
+    }
+
+    // Manually activate the plugins that would have been automatically
+    // activated.
+    let cwu = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                           .getInterface(Ci.nsIDOMWindowUtils);
+    let plugins = cwu.plugins;
+    let pluginHost = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
+
+    for (let plugin of plugins) {
+      plugin.QueryInterface(Ci.nsIObjectLoadingContent);
+      // canActivatePlugin will return false if this isn't a known plugin type,
+      // so the pluginHost.getPermissionStringForType call is protected
+      if (gPluginHandler.canActivatePlugin(plugin) &&
+          aPluginInfo.permissionString == pluginHost.getPermissionStringForType(plugin.actualType)) {
+        plugin.playPlugin();
+      }
+    }
+  },
+
+  _showClickToPlayNotification: function PH_showClickToPlayNotification(aBrowser, aPrimaryPlugin) {
+    let notification = PopupNotifications.getNotification("click-to-play-plugins", aBrowser);
+
+    let contentWindow = aBrowser.contentWindow;
+    let contentDoc = aBrowser.contentDocument;
+    let cwu = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                           .getInterface(Ci.nsIDOMWindowUtils);
+    // Pale Moon: cwu.plugins may contain non-plugin <object>s, filter them out
+    let plugins = cwu.plugins.filter(function(plugin) {
+      return (plugin.getContentTypeForMIMEType(plugin.actualType) ==
+              Ci.nsIObjectLoadingContent.TYPE_PLUGIN);
+    });
+    if (plugins.length == 0) {
+      if (notification) {
+        PopupNotifications.remove(notification);
+      }
+      return;
+    }
+
+    let icon = 'plugins-notification-icon';
+    for (let plugin of plugins) {
+      let fallbackType = plugin.pluginFallbackType;
+      if (fallbackType == plugin.PLUGIN_VULNERABLE_UPDATABLE ||
+          fallbackType == plugin.PLUGIN_VULNERABLE_NO_UPDATE ||
+          fallbackType == plugin.PLUGIN_BLOCKLISTED) {
+        icon = 'blocked-plugins-notification-icon';
+        break;
+      }
+      if (fallbackType == plugin.PLUGIN_CLICK_TO_PLAY) {
+        let overlay = contentDoc.getAnonymousElementByAttribute(plugin, "anonid", "main");
+        if (!overlay || overlay.style.visibility == 'hidden') {
+          icon = 'alert-plugins-notification-icon';
+        }
+      }
+    }
+
+    let dismissed = notification ? notification.dismissed : true;
+    if (aPrimaryPlugin)
+      dismissed = false;
+
+    let primaryPluginPermission = null;
+    if (aPrimaryPlugin) {
+      primaryPluginPermission = this._getPluginInfo(aPrimaryPlugin).permissionString;
+    }
+
+    let options = {
+      dismissed: dismissed,
+      eventCallback: this._clickToPlayNotificationEventCallback,
+      primaryPlugin: primaryPluginPermission
+    };
+    PopupNotifications.show(aBrowser, "click-to-play-plugins",
+                            "", icon,
+                            null, null, options);
+  },
+
+  // Crashed-plugin observer. Notified once per plugin crash, before events
+  // are dispatched to individual plugin instances.
+  pluginCrashed : function(subject, topic, data) {
+    let propertyBag = subject;
+    if (!(propertyBag instanceof Ci.nsIPropertyBag2) ||
+        !(propertyBag instanceof Ci.nsIWritablePropertyBag2))
+     return;
+  },
+
+  // Crashed-plugin event listener. Called for every instance of a
+  // plugin in content.
+  pluginInstanceCrashed: function (plugin, aEvent) {
+    // Ensure the plugin and event are of the right type.
+    if (!(aEvent instanceof Ci.nsIDOMDataContainerEvent))
+      return;
+
+    let submittedReport = aEvent.getData("submittedCrashReport");
+    let doPrompt        = true; // XXX followup for .getData("doPrompt");
+    let submitReports   = true; // XXX followup for .getData("submitReports");
+    let pluginName      = aEvent.getData("pluginName");
+    let pluginDumpID    = aEvent.getData("pluginDumpID");
+    let browserDumpID   = aEvent.getData("browserDumpID");
+
+    // Remap the plugin name to a more user-presentable form.
+    pluginName = this.makeNicePluginName(pluginName);
+
+    let messageString = gNavigatorBundle.getFormattedString("crashedpluginsMessage.title", [pluginName]);
+
+    //
+    // Configure the crashed-plugin placeholder.
+    //
+
+    // Force a layout flush so the binding is attached.
+    plugin.clientTop;
+    let doc = plugin.ownerDocument;
+    let overlay = doc.getAnonymousElementByAttribute(plugin, "class", "mainBox");
+    let statusDiv = doc.getAnonymousElementByAttribute(plugin, "class", "submitStatus");
+
+    let crashText = doc.getAnonymousElementByAttribute(plugin, "class", "msgCrashedText");
+    crashText.textContent = messageString;
+
+    let browser = gBrowser.getBrowserForDocument(doc.defaultView.top.document);
+
+    let link = doc.getAnonymousElementByAttribute(plugin, "class", "reloadLink");
+    this.addLinkClickCallback(link, "reloadPage", browser);
+
+    let notificationBox = gBrowser.getNotificationBox(browser);
+
+    let isShowing = true;
+
+    // Is the <object>'s size too small to hold what we want to show?
+    if (this.isTooSmall(plugin, overlay)) {
+      // First try hiding the crash report submission UI.
+      statusDiv.removeAttribute("status");
+
+      if (this.isTooSmall(plugin, overlay)) {
+        // Hide the overlay's contents. Use visibility style, so that it doesn't
+        // collapse down to 0x0.
+        overlay.style.visibility = "hidden";
+        isShowing = false;
+      }
+    }
+
+    if (isShowing) {
+      // If a previous plugin on the page was too small and resulted in adding a
+      // notification bar, then remove it because this plugin instance it big
+      // enough to serve as in-content notification.
+      hideNotificationBar();
+      doc.mozNoPluginCrashedNotification = true;
+    } else {
+      // If another plugin on the page was large enough to show our UI, we don't
+      // want to show a notification bar.
+      if (!doc.mozNoPluginCrashedNotification)
+        showNotificationBar(pluginDumpID, browserDumpID);
+    }
+
+    function hideNotificationBar() {
+      let notification = notificationBox.getNotificationWithValue("plugin-crashed");
+      if (notification)
+        notificationBox.removeNotification(notification, true);
+    }
+
+    function showNotificationBar(pluginDumpID, browserDumpID) {
+      // If there's already an existing notification bar, don't do anything.
+      let notification = notificationBox.getNotificationWithValue("plugin-crashed");
+      if (notification)
+        return;
+
+      // Configure the notification bar
+      let priority = notificationBox.PRIORITY_WARNING_MEDIUM;
+      let iconURL = "chrome://mozapps/skin/plugins/notifyPluginCrashed.png";
+      let reloadLabel = gNavigatorBundle.getString("crashedpluginsMessage.reloadButton.label");
+      let reloadKey   = gNavigatorBundle.getString("crashedpluginsMessage.reloadButton.accesskey");
+      let submitLabel = gNavigatorBundle.getString("crashedpluginsMessage.submitButton.label");
+      let submitKey   = gNavigatorBundle.getString("crashedpluginsMessage.submitButton.accesskey");
+
+      let buttons = [{
+        label: reloadLabel,
+        accessKey: reloadKey,
+        popup: null,
+        callback: function() { browser.reload(); },
+      }];
+
+      notification = notificationBox.appendNotification(messageString, "plugin-crashed",
+                                                            iconURL, priority, buttons);
+
+      // Add the "learn more" link.
+      let XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+      let link = notification.ownerDocument.createElementNS(XULNS, "label");
+      link.className = "text-link";
+      link.setAttribute("value", gNavigatorBundle.getString("crashedpluginsMessage.learnMore"));
+      let crashurl = formatURL("app.support.baseURL", true);
+      crashurl += "plugin-crashed-notificationbar";
+      link.href = crashurl;
+
+      let description = notification.ownerDocument.getAnonymousElementByAttribute(notification, "anonid", "messageText");
+      description.appendChild(link);
+
+      // Remove the notfication when the page is reloaded.
+      doc.defaultView.top.addEventListener("unload", function() {
+        notificationBox.removeNotification(notification);
+      }, false);
+    }
+
+  }
+};
diff --git a/webbrowser/base/content/browser-sets.inc b/webbrowser/base/content/browser-sets.inc
new file mode 100644
index 0000000..78fce26
--- /dev/null
+++ b/webbrowser/base/content/browser-sets.inc
@@ -0,0 +1,357 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifdef XP_UNIX
+#ifndef XP_MACOSX
+#define XP_GNOME 1
+#endif
+#endif
+
+  <stringbundleset id="stringbundleset">
+    <stringbundle id="bundle_brand" src="chrome://branding/locale/brand.properties"/>
+    <stringbundle id="bundle_shell" src="chrome://browser/locale/shellservice.properties"/>
+    <stringbundle id="bundle_preferences" src="chrome://browser/locale/preferences/preferences.properties"/>
+  </stringbundleset>
+
+  <commandset id="mainCommandSet">
+    <command id="cmd_newNavigator"                 oncommand="OpenBrowserWindow()"/>
+    <command id="cmd_handleBackspace" oncommand="BrowserHandleBackspace();" />
+    <command id="cmd_handleShiftBackspace" oncommand="BrowserHandleShiftBackspace();" />
+
+    <command id="cmd_newNavigatorTab" oncommand="BrowserOpenTab();"/>
+    <command id="Browser:OpenFile"  oncommand="BrowserOpenFileWindow();"/>
+    <command id="Browser:SavePage" oncommand="saveDocument(window.content.document);"/>
+
+    <command id="Browser:SendLink"
+             oncommand="MailIntegration.sendLinkForWindow(window.content);"/>
+
+    <command id="cmd_pageSetup" oncommand="PrintUtils.showPageSetup();"/>
+    <command id="cmd_print" oncommand="PrintUtils.print();"/>
+    <command id="cmd_printPreview" oncommand="PrintUtils.printPreview(PrintPreviewListener);"/>
+    <command id="cmd_close" oncommand="BrowserCloseTabOrWindow()"/>
+    <command id="cmd_closeWindow" oncommand="BrowserTryToCloseWindow()"/>
+	<command id="cmd_toggleMute" oncommand="gBrowser.selectedTab.toggleMuteAudio()"/>
+    <command id="cmd_ToggleTabsOnTop" oncommand="TabsOnTop.toggle()"/>
+    <command id="cmd_CustomizeToolbars" oncommand="BrowserCustomizeToolbar()"/>
+    <command id="cmd_restartApplication" oncommand="restart(false);"/>
+    <command id="cmd_quitApplication" oncommand="goQuitApplication()"/>
+
+
+    <commandset id="editMenuCommands"/>
+
+    <command id="View:PageSource" oncommand="BrowserViewSourceOfDocument(content.document);" observes="isImage"/>
+    <command id="View:PageInfo" oncommand="BrowserPageInfo();"/>
+    <command id="View:FullScreen" oncommand="BrowserFullScreen();"/>
+    <command id="cmd_find"
+             oncommand="gFindBar.onFindCommand();"
+             observes="isImage"/>
+    <command id="cmd_findAgain"
+             oncommand="gFindBar.onFindAgainCommand(false);"
+             observes="isImage"/>
+    <command id="cmd_findPrevious"
+             oncommand="gFindBar.onFindAgainCommand(true);"
+             observes="isImage"/>
+    <!-- work-around bug 392512 -->
+    <command id="Browser:AddBookmarkAs"
+             oncommand="PlacesCommandHook.bookmarkCurrentPage(true, PlacesUtils.bookmarksMenuFolderId);"/>
+    <!-- The command disabled state must be manually updated through
+         PlacesCommandHook.updateBookmarkAllTabsCommand() -->
+    <command id="Browser:BookmarkAllTabs"
+             oncommand="PlacesCommandHook.bookmarkCurrentPages();"/>
+    <command id="Browser:Home"    oncommand="BrowserHome();"/>
+    <command id="Browser:Back"    oncommand="BrowserBack();" disabled="true"/>
+    <command id="Browser:BackOrBackDuplicate" oncommand="BrowserBack(event);" disabled="true">
+      <observes element="Browser:Back" attribute="disabled"/>
+    </command>
+    <command id="Browser:Forward" oncommand="BrowserForward();" disabled="true"/>
+    <command id="Browser:ForwardOrForwardDuplicate" oncommand="BrowserForward(event);" disabled="true">
+      <observes element="Browser:Forward" attribute="disabled"/>
+    </command>
+    <command id="Browser:Stop"    oncommand="BrowserStop();" disabled="true"/>
+    <command id="Browser:Reload"  oncommand="if (event.shiftKey) BrowserReloadSkipCache(); else BrowserReload()" disabled="true"/>
+    <command id="Browser:ReloadOrDuplicate" oncommand="BrowserReloadOrDuplicate(event)" disabled="true">
+      <observes element="Browser:Reload" attribute="disabled"/>
+    </command>
+    <command id="Browser:ReloadSkipCache" oncommand="BrowserReloadSkipCache()" disabled="true">
+      <observes element="Browser:Reload" attribute="disabled"/>
+    </command>
+    <command id="Browser:NextTab" oncommand="gBrowser.tabContainer.advanceSelectedTab(1, true);"/>
+    <command id="Browser:PrevTab" oncommand="gBrowser.tabContainer.advanceSelectedTab(-1, true);"/>
+    <command id="Browser:ShowAllTabs" oncommand="allTabs.open();"/>
+    <command id="cmd_fullZoomReduce"  oncommand="FullZoom.reduce()"/>
+    <command id="cmd_fullZoomEnlarge" oncommand="FullZoom.enlarge()"/>
+    <command id="cmd_fullZoomReset"   oncommand="FullZoom.reset()"/>
+    <command id="cmd_fullZoomToggle"  oncommand="ZoomManager.toggleZoom();"/>
+    <command id="cmd_gestureRotateLeft" oncommand="gGestureSupport.rotate(event.sourceEvent)"/>
+    <command id="cmd_gestureRotateRight" oncommand="gGestureSupport.rotate(event.sourceEvent)"/>
+    <command id="cmd_gestureRotateEnd" oncommand="gGestureSupport.rotateEnd()"/>
+    <command id="Browser:OpenLocation" oncommand="openLocation();"/>
+    <command id="Browser:RestoreLastSession" oncommand="restoreLastSession();" disabled="true"/>
+
+    <command id="Tools:Search" oncommand="BrowserSearch.webSearch();"/>
+    <command id="Tools:Downloads" oncommand="BrowserDownloadsUI();"/>
+    <command id="Tools:Addons" oncommand="BrowserOpenAddonsMgr();"/>
+    <command id="Tools:Permissions" oncommand="BrowserOpenPermissionsMgr();"/>
+    <command id="Tools:ErrorConsole" oncommand="toJavaScriptConsole()" disabled="true" hidden="true"/>
+    <command id="Tools:Sanitize"
+     oncommand="Cc['@mozilla.org/browser/browserglue;1'].getService(Ci.nsIBrowserGlue).sanitize(window);"/>
+    <command id="Tools:PrivateBrowsing"
+      oncommand="OpenBrowserWindow({private: true});"/>
+    <command id="History:UndoCloseTab" oncommand="undoCloseTab();"/>
+    <command id="History:UndoCloseWindow" oncommand="undoCloseWindow();"/>
+    <command id="Browser:ToggleAddonBar" oncommand="toggleAddonBar();"/>
+  </commandset>
+
+  <commandset id="placesCommands">
+    <command id="Browser:ShowAllBookmarks"
+             oncommand="PlacesCommandHook.showPlacesOrganizer('AllBookmarks');"/>
+    <command id="Browser:ShowAllHistory"
+             oncommand="PlacesCommandHook.showPlacesOrganizer('History');"/>
+  </commandset>
+
+  <broadcasterset id="mainBroadcasterSet">
+    <broadcaster id="viewBookmarksSidebar" autoCheck="false" sidebartitle="&bookmarksButton.label;"
+                 type="checkbox" group="sidebar" sidebarurl="chrome://browser/content/bookmarks/bookmarksPanel.xul"
+                 oncommand="toggleSidebar('viewBookmarksSidebar');"/>
+
+    <!-- for both places and non-places, the sidebar lives at
+         chrome://browser/content/history/history-panel.xul so there are no
+         problems when switching between versions -->
+    <broadcaster id="viewHistorySidebar" autoCheck="false" sidebartitle="&historyButton.label;"
+                 type="checkbox" group="sidebar"
+                 sidebarurl="chrome://browser/content/history/history-panel.xul"
+                 oncommand="toggleSidebar('viewHistorySidebar');"/>
+
+    <broadcaster id="viewWebPanelsSidebar" autoCheck="false"
+                 type="checkbox" group="sidebar" sidebarurl="chrome://browser/content/web-panels.xul"
+                 oncommand="toggleSidebar('viewWebPanelsSidebar');"/>
+
+    <!-- popup blocking menu items -->
+    <broadcaster id="blockedPopupAllowSite"
+                 accesskey="&allowPopups.accesskey;"
+                 oncommand="gPopupBlockerObserver.toggleAllowPopupsForSite(event);"/>
+    <broadcaster id="blockedPopupEditSettings"
+#ifdef XP_WIN
+                 label="&editPopupSettings.label;"
+#else
+                 label="&editPopupSettingsUnix.label;"
+#endif
+                 accesskey="&editPopupSettings.accesskey;"
+                 oncommand="gPopupBlockerObserver.editPopupSettings();"/>
+    <broadcaster id="blockedPopupDontShowMessage"
+                 accesskey="&dontShowMessage.accesskey;"
+                 type="checkbox"
+                 oncommand="gPopupBlockerObserver.dontShowMessage();"/>
+    <broadcaster id="blockedPopupsSeparator"/>
+    <broadcaster id="isImage"/>
+    <broadcaster id="isFrameImage"/>
+    <broadcaster id="singleFeedMenuitemState" disabled="true"/>
+    <broadcaster id="multipleFeedsMenuState" hidden="true"/>
+#ifdef MOZ_SERVICES_SYNC
+    <broadcaster id="sync-setup-state"/>
+    <broadcaster id="sync-syncnow-state"/>
+#endif
+    <broadcaster id="workOfflineMenuitemState"/>
+
+    <broadcaster id="devtoolsMenuBroadcaster_PageSource"
+                 label="&pageSourceCmd.label;"
+                 key="key_viewSource"
+                 command="View:PageSource"/>
+    <broadcaster id="devtoolsMenuBroadcaster_ErrorConsole"
+                 label="&errorConsoleCmd.label;"
+                 command="Tools:ErrorConsole"/>
+  </broadcasterset>
+
+  <keyset id="mainKeyset">
+    <key id="key_newNavigator"
+         key="&newNavigatorCmd.key;"
+         command="cmd_newNavigator"
+         modifiers="accel"/>
+    <key id="key_newNavigatorTab" key="&tabCmd.commandkey;" modifiers="accel" command="cmd_newNavigatorTab"/>
+    <key id="focusURLBar" key="&openCmd.commandkey;" command="Browser:OpenLocation"
+         modifiers="accel"/>
+#ifndef XP_MACOSX
+    <key id="focusURLBar2" key="&urlbar.accesskey;" command="Browser:OpenLocation"
+         modifiers="alt"/>
+#endif
+
+#
+# Search Command Key Logic works like this:
+#
+# Unix: Ctrl+K (cross platform binding)
+#       Ctrl+J (in case of emacs Ctrl-K conflict)
+# Mac:  Cmd+K (cross platform binding)
+#       Cmd+Opt+F (platform convention)
+# Win:  Ctrl+K (cross platform binding)
+#       Ctrl+E (IE compat)
+#
+# We support Ctrl+K on all platforms now and advertise it in the menu since it is
+# our standard - it is a "safe" choice since it is near no harmful keys like "W" as
+# "E" is. People mourning the loss of Ctrl+K for emacs compat can switch their GTK
+# system setting to use emacs emulation, and we should respect it. Focus-Search-Box
+# is a fundamental keybinding and we are maintaining a XP binding so that it is easy
+# for people to switch to Linux.
+#
+    <key id="key_search" key="&searchFocus.commandkey;" command="Tools:Search" modifiers="accel"/>
+#ifdef XP_MACOSX
+    <key id="key_search2" key="&findOnCmd.commandkey;" command="Tools:Search" modifiers="accel,alt"/>
+#endif
+#ifdef XP_WIN
+    <key id="key_search2" key="&searchFocus.commandkey2;" command="Tools:Search" modifiers="accel"/>
+#endif
+#ifdef XP_GNOME
+    <key id="key_search2" key="&searchFocusUnix.commandkey;" command="Tools:Search" modifiers="accel"/>
+    <key id="key_openDownloads" key="&downloadsUnix.commandkey;" command="Tools:Downloads" modifiers="accel,shift"/>
+#else
+    <key id="key_openDownloads" key="&downloads.commandkey;" command="Tools:Downloads" modifiers="accel"/>
+#endif
+    <key id="key_openAddons" key="&addons.commandkey;" command="Tools:Addons" modifiers="accel,shift"/>
+    <key id="openFileKb" key="&openFileCmd.commandkey;" command="Browser:OpenFile"  modifiers="accel"/>
+    <key id="key_savePage" key="&savePageCmd.commandkey;" command="Browser:SavePage" modifiers="accel"/>
+    <key id="printKb" key="&printCmd.commandkey;" command="cmd_print"  modifiers="accel"/>
+    <key id="key_close" key="&closeCmd.key;" command="cmd_close" modifiers="accel"/>
+    <key id="key_closeWindow" key="&closeCmd.key;" command="cmd_closeWindow" modifiers="accel,shift"/>
+	<key id="key_toggleMute" key="&toggleMuteCmd.key;" command="cmd_toggleMute" modifiers="control"/>
+    <key id="key_undo"
+         key="&undoCmd.key;"
+         modifiers="accel"/>
+#ifdef XP_UNIX
+    <key id="key_redo" key="&undoCmd.key;" modifiers="accel,shift"/>
+#else
+    <key id="key_redo" key="&redoCmd.key;" modifiers="accel"/>
+#endif
+    <key id="key_cut"
+         key="&cutCmd.key;"
+         modifiers="accel"/>
+    <key id="key_copy"
+         key="&copyCmd.key;"
+         modifiers="accel"/>
+    <key id="key_paste"
+         key="&pasteCmd.key;"
+         modifiers="accel"/>
+    <key id="key_delete" keycode="VK_DELETE" command="cmd_delete"/>
+    <key id="key_selectAll" key="&selectAllCmd.key;" modifiers="accel"/>
+
+    <key keycode="VK_BACK" command="cmd_handleBackspace"/>
+    <key keycode="VK_BACK" command="cmd_handleShiftBackspace" modifiers="shift"/>
+#ifndef XP_MACOSX
+    <key id="goBackKb"  keycode="VK_LEFT" command="Browser:Back" modifiers="alt"/>
+    <key id="goForwardKb"  keycode="VK_RIGHT" command="Browser:Forward" modifiers="alt"/>
+#else
+    <key id="goBackKb" keycode="VK_LEFT" command="Browser:Back" modifiers="accel" />
+    <key id="goForwardKb" keycode="VK_RIGHT" command="Browser:Forward" modifiers="accel" />
+#endif
+#ifdef XP_UNIX
+    <key id="goBackKb2" key="&goBackCmd.commandKey;" command="Browser:Back" modifiers="accel"/>
+    <key id="goForwardKb2" key="&goForwardCmd.commandKey;" command="Browser:Forward" modifiers="accel"/>
+#endif
+    <key id="goHome" keycode="VK_HOME" command="Browser:Home" modifiers="alt"/>
+    <key keycode="VK_F5" command="Browser:Reload"/>
+#ifndef XP_MACOSX
+    <key id="showAllHistoryKb" key="&showAllHistoryCmd.commandkey;" command="Browser:ShowAllHistory" modifiers="accel,shift"/>
+    <key keycode="VK_F5" command="Browser:ReloadSkipCache" modifiers="accel"/>
+    <key id="key_fullScreen" keycode="VK_F11" command="View:FullScreen"/>
+#else
+    <key id="key_fullScreen" key="&fullScreenCmd.macCommandKey;" command="View:FullScreen" modifiers="accel,control"/>
+    <key id="key_fullScreen_old" key="&fullScreenCmd.macCommandKey;" command="View:FullScreen" modifiers="accel,shift"/>
+    <key keycode="VK_F11" command="View:FullScreen"/>
+#endif
+    <key key="&reloadCmd.commandkey;" command="Browser:Reload" modifiers="accel" id="key_reload"/>
+    <key key="&reloadCmd.commandkey;" command="Browser:ReloadSkipCache" modifiers="accel,shift"/>
+    <key id="key_viewSource" key="&pageSourceCmd.commandkey;" command="View:PageSource" modifiers="accel"/>
+#ifndef XP_WIN
+    <key id="key_viewInfo"   key="&pageInfoCmd.commandkey;"   command="View:PageInfo"   modifiers="accel"/>
+#endif
+    <key id="key_find" key="&findOnCmd.commandkey;" command="cmd_find" modifiers="accel"/>
+    <key id="key_findAgain" key="&findAgainCmd.commandkey;" command="cmd_findAgain" modifiers="accel"/>
+    <key id="key_findPrevious" key="&findAgainCmd.commandkey;" command="cmd_findPrevious" modifiers="accel,shift"/>
+    <key keycode="&findAgainCmd.commandkey2;" command="cmd_findAgain"/>
+    <key keycode="&findAgainCmd.commandkey2;"  command="cmd_findPrevious" modifiers="shift"/>
+
+    <key id="addBookmarkAsKb" key="&bookmarkThisPageCmd.commandkey;" command="Browser:AddBookmarkAs" modifiers="accel"/>
+# Accel+Shift+A-F are reserved on GTK
+#ifndef MOZ_WIDGET_GTK
+    <key id="bookmarkAllTabsKb" key="&bookmarkThisPageCmd.commandkey;" oncommand="PlacesCommandHook.bookmarkCurrentPages();" modifiers="accel,shift"/>
+    <key id="manBookmarkKb" key="&bookmarksCmd.commandkey;" command="Browser:ShowAllBookmarks" modifiers="accel,shift"/>
+#else
+    <key id="manBookmarkKb" key="&bookmarksGtkCmd.commandkey;" command="Browser:ShowAllBookmarks" modifiers="accel,shift"/>
+#endif
+    <key id="viewBookmarksSidebarKb" key="&bookmarksCmd.commandkey;" command="viewBookmarksSidebar" modifiers="accel"/>
+#ifdef XP_WIN
+# Cmd+I is conventially mapped to Info on MacOS X, thus it should not be
+# overridden for other purposes there.
+    <key id="viewBookmarksSidebarWinKb" key="&bookmarksWinCmd.commandkey;" command="viewBookmarksSidebar" modifiers="accel"/>
+#endif
+
+# Navigation cancel keys: Esc performs a cancel on loading (i.e.: stop button equivalent)
+# Shift-Esc (and similar Shift-modified stop on Mac) performs a "superstop": this halts all
+# networking requests, XHR, animated gifs, etc.
+    <key id="key_stop" keycode="VK_ESCAPE" command="Browser:Stop"/>
+    <key id="key_stop_all" keycode="VK_ESCAPE" modifiers="shift" oncommand="BrowserStop();"/>
+#ifdef XP_MACOSX
+    <key id="key_stop_mac" modifiers="accel" key="&stopCmd.macCommandKey;" command="Browser:Stop"/>
+    <key id="key_stop_all_mac" modifiers="accel,shift" key="&stopCmd.macCommandKey;" oncommand="BrowserStop();"/>
+#endif
+
+    <key id="key_gotoHistory"
+         key="&historySidebarCmd.commandKey;"
+#ifdef XP_MACOSX
+         modifiers="accel,shift"
+#else
+         modifiers="accel"
+#endif
+         command="viewHistorySidebar"/>
+
+    <key id="key_fullZoomReduce"  key="&fullZoomReduceCmd.commandkey;"   command="cmd_fullZoomReduce"  modifiers="accel"/>
+    <key                          key="&fullZoomReduceCmd.commandkey2;"  command="cmd_fullZoomReduce"  modifiers="accel"/>
+    <key id="key_fullZoomEnlarge" key="&fullZoomEnlargeCmd.commandkey;"  command="cmd_fullZoomEnlarge" modifiers="accel"/>
+    <key                          key="&fullZoomEnlargeCmd.commandkey2;" command="cmd_fullZoomEnlarge" modifiers="accel"/>
+    <key                          key="&fullZoomEnlargeCmd.commandkey3;" command="cmd_fullZoomEnlarge" modifiers="accel"/>
+    <key id="key_fullZoomReset"   key="&fullZoomResetCmd.commandkey;"    command="cmd_fullZoomReset"   modifiers="accel"/>
+    <key                          key="&fullZoomResetCmd.commandkey2;"   command="cmd_fullZoomReset"   modifiers="accel"/>
+
+    <key id="key_showAllTabs" command="Browser:ShowAllTabs" keycode="VK_TAB" modifiers="control,shift"/>
+
+    <key id="key_switchTextDirection" key="&bidiSwitchTextDirectionItem.commandkey;" command="cmd_switchTextDirection" modifiers="accel,shift" />
+
+    <key id="key_privatebrowsing" command="Tools:PrivateBrowsing" key="&privateBrowsingCmd.commandkey;" modifiers="accel,shift"/>
+    <key id="key_sanitize" command="Tools:Sanitize" keycode="VK_DELETE" modifiers="accel,shift"/>
+#ifdef XP_MACOSX
+    <key id="key_sanitize_mac" command="Tools:Sanitize" keycode="VK_BACK" modifiers="accel,shift"/>
+#endif
+#ifdef XP_UNIX
+    <key id="key_quitApplication" key="&quitApplicationCmdUnix.key;" command="cmd_quitApplication" modifiers="accel"/>
+#endif
+
+#ifdef FULL_BROWSER_WINDOW
+    <key id="key_undoCloseTab" command="History:UndoCloseTab" key="&tabCmd.commandkey;" modifiers="accel,shift"/>
+#endif
+    <key id="key_undoCloseWindow" command="History:UndoCloseWindow" key="&newNavigatorCmd.key;" modifiers="accel,shift"/>
+
+#ifdef XP_GNOME
+#define NUM_SELECT_TAB_MODIFIER alt
+#else
+#define NUM_SELECT_TAB_MODIFIER accel
+#endif
+
+#expand    <key id="key_selectTab1" oncommand="gBrowser.selectTabAtIndex(0, event);" key="1" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab2" oncommand="gBrowser.selectTabAtIndex(1, event);" key="2" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab3" oncommand="gBrowser.selectTabAtIndex(2, event);" key="3" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab4" oncommand="gBrowser.selectTabAtIndex(3, event);" key="4" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab5" oncommand="gBrowser.selectTabAtIndex(4, event);" key="5" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab6" oncommand="gBrowser.selectTabAtIndex(5, event);" key="6" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab7" oncommand="gBrowser.selectTabAtIndex(6, event);" key="7" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectTab8" oncommand="gBrowser.selectTabAtIndex(7, event);" key="8" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+#expand    <key id="key_selectLastTab" oncommand="gBrowser.selectTabAtIndex(-1, event);" key="9" modifiers="__NUM_SELECT_TAB_MODIFIER__"/>
+
+    <key id="key_toggleAddonBar" command="Browser:ToggleAddonBar" key="&toggleAddonBarCmd.key;" modifiers="accel"/>
+
+  </keyset>
+
+# Used by baseMenuOverlay
+#ifdef XP_MACOSX
+  <commandset id="baseMenuCommandSet" />
+#endif
+  <keyset id="baseMenuKeyset" />
diff --git a/webbrowser/base/content/browser-syncui.js b/webbrowser/base/content/browser-syncui.js
new file mode 100644
index 0000000..86f6f48
--- /dev/null
+++ b/webbrowser/base/content/browser-syncui.js
@@ -0,0 +1,472 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// gSyncUI handles updating the tools menu
+var gSyncUI = {
+  _obs: ["weave:service:sync:start",
+         "weave:service:sync:delayed",
+         "weave:service:quota:remaining",
+         "weave:service:setup-complete",
+         "weave:service:login:start",
+         "weave:service:login:finish",
+         "weave:service:logout:finish",
+         "weave:service:start-over",
+         "weave:ui:login:error",
+         "weave:ui:sync:error",
+         "weave:ui:sync:finish",
+         "weave:ui:clear-error",
+  ],
+
+  _unloaded: false,
+
+  init: function SUI_init() {
+    // Proceed to set up the UI if Sync has already started up.
+    // Otherwise we'll do it when Sync is firing up.
+    let xps = Components.classes["@mozilla.org/weave/service;1"]
+                                .getService(Components.interfaces.nsISupports)
+                                .wrappedJSObject;
+    if (xps.ready) {
+      this.initUI();
+      return;
+    }
+
+    Services.obs.addObserver(this, "weave:service:ready", true);
+
+    // Remove the observer if the window is closed before the observer
+    // was triggered.
+    window.addEventListener("unload", function onUnload() {
+      gSyncUI._unloaded = true;
+      window.removeEventListener("unload", onUnload, false);
+      Services.obs.removeObserver(gSyncUI, "weave:service:ready");
+
+      if (Weave.Status.ready) {
+        gSyncUI._obs.forEach(function(topic) {
+          Services.obs.removeObserver(gSyncUI, topic);
+        });
+      }
+    }, false);
+  },
+
+  initUI: function SUI_initUI() {
+    // If this is a browser window?
+    if (gBrowser) {
+      this._obs.push("weave:notification:added");
+    }
+
+    this._obs.forEach(function(topic) {
+      Services.obs.addObserver(this, topic, true);
+    }, this);
+
+    if (gBrowser && Weave.Notifications.notifications.length) {
+      this.initNotifications();
+    }
+    this.updateUI();
+  },
+
+  initNotifications: function SUI_initNotifications() {
+    const XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+    let notificationbox = document.createElementNS(XULNS, "notificationbox");
+    notificationbox.id = "sync-notifications";
+    notificationbox.setAttribute("flex", "1");
+
+    let bottombox = document.getElementById("browser-bottombox");
+    bottombox.insertBefore(notificationbox, bottombox.firstChild);
+
+    // Force a style flush to ensure that our binding is attached.
+    notificationbox.clientTop;
+
+    // notificationbox will listen to observers from now on.
+    Services.obs.removeObserver(this, "weave:notification:added");
+  },
+
+  _wasDelayed: false,
+
+  _needsSetup: function SUI__needsSetup() {
+    let firstSync = Services.prefs.getCharPref("services.sync.firstSync", "");
+    return Weave.Status.checkSetup() == Weave.CLIENT_NOT_CONFIGURED ||
+           firstSync == "notReady";
+  },
+
+  updateUI: function SUI_updateUI() {
+    let needsSetup = this._needsSetup();
+    document.getElementById("sync-setup-state").hidden = !needsSetup;
+    document.getElementById("sync-syncnow-state").hidden = needsSetup;
+
+    if (!gBrowser) {
+      return;
+    }
+
+    let button = document.getElementById("sync-button");
+    if (!button) {
+      return;
+    }
+
+    button.removeAttribute("status");
+
+    this._updateLastSyncTime();
+
+    if (needsSetup) {
+      button.removeAttribute("tooltiptext");
+      button.setAttribute("label", this._stringBundle.GetStringFromName("setupsync.label"));
+    } else {
+      button.setAttribute("label", this._stringBundle.GetStringFromName("syncnow.label"));
+    }
+  },
+
+
+  // Functions called by observers
+  onActivityStart: function SUI_onActivityStart() {
+    if (!gBrowser)
+      return;
+
+    let button = document.getElementById("sync-button");
+    if (!button)
+      return;
+
+    button.setAttribute("status", "active");
+    button.setAttribute("label", this._stringBundle.GetStringFromName("syncing2.label"));
+  },
+
+  onSyncDelay: function SUI_onSyncDelay() {
+    // basically, we want to just inform users that stuff is going to take a while
+    let title = this._stringBundle.GetStringFromName("error.sync.no_node_found.title");
+    let description = this._stringBundle.GetStringFromName("error.sync.no_node_found");
+    let buttons = [new Weave.NotificationButton(
+      this._stringBundle.GetStringFromName("error.sync.serverStatusButton.label"),
+      this._stringBundle.GetStringFromName("error.sync.serverStatusButton.accesskey"),
+      function() { gSyncUI.openServerStatus(); return true; }
+    )];
+    let notification = new Weave.Notification(
+      title, description, null, Weave.Notifications.PRIORITY_INFO, buttons);
+    Weave.Notifications.replaceTitle(notification);
+    this._wasDelayed = true;
+  },
+
+  onLoginFinish: function SUI_onLoginFinish() {
+    // Clear out any login failure notifications
+    let title = this._stringBundle.GetStringFromName("error.login.title");
+    this.clearError(title);
+  },
+
+  onSetupComplete: function SUI_onSetupComplete() {
+    this.onLoginFinish();
+  },
+
+  onLoginError: function SUI_onLoginError() {
+    // if login fails, any other notifications are essentially moot
+    Weave.Notifications.removeAll();
+
+    // if we haven't set up the client, don't show errors
+    if (this._needsSetup()) {
+      this.updateUI();
+      return;
+    }
+
+    let title = this._stringBundle.GetStringFromName("error.login.title");
+
+    let description;
+    if (Weave.Status.sync == Weave.PROLONGED_SYNC_FAILURE) {
+      // Convert to days
+      let lastSync =
+        Services.prefs.getIntPref("services.sync.errorhandler.networkFailureReportTimeout") / 86400;
+      description =
+        this._stringBundle.formatStringFromName("error.sync.prolonged_failure", [lastSync], 1);
+    } else {
+      let reason = Weave.Utils.getErrorString(Weave.Status.login);
+      description =
+        this._stringBundle.formatStringFromName("error.sync.description", [reason], 1);
+    }
+
+    let buttons = [];
+    buttons.push(new Weave.NotificationButton(
+      this._stringBundle.GetStringFromName("error.login.prefs.label"),
+      this._stringBundle.GetStringFromName("error.login.prefs.accesskey"),
+      function() { gSyncUI.openPrefs(); return true; }
+    ));
+
+    let notification = new Weave.Notification(title, description, null,
+                                              Weave.Notifications.PRIORITY_WARNING, buttons);
+    Weave.Notifications.replaceTitle(notification);
+    this.updateUI();
+  },
+
+  onLogout: function SUI_onLogout() {
+    this.updateUI();
+  },
+
+  onStartOver: function SUI_onStartOver() {
+    this.clearError();
+  },
+
+  onQuotaNotice: function onQuotaNotice(subject, data) {
+    let title = this._stringBundle.GetStringFromName("warning.sync.quota.label");
+    let description = this._stringBundle.GetStringFromName("warning.sync.quota.description");
+    let buttons = [];
+    buttons.push(new Weave.NotificationButton(
+      this._stringBundle.GetStringFromName("error.sync.viewQuotaButton.label"),
+      this._stringBundle.GetStringFromName("error.sync.viewQuotaButton.accesskey"),
+      function() { gSyncUI.openQuotaDialog(); return true; }
+    ));
+
+    let notification = new Weave.Notification(
+      title, description, null, Weave.Notifications.PRIORITY_WARNING, buttons);
+    Weave.Notifications.replaceTitle(notification);
+  },
+
+  openServerStatus: function () {
+    let statusURL = Services.prefs.getCharPref("services.sync.statusURL");
+    window.openUILinkIn(statusURL, "tab");
+  },
+
+  // Commands
+  doSync: function SUI_doSync() {
+    setTimeout(function() Weave.Service.errorHandler.syncAndReportErrors(), 0);
+  },
+
+  handleToolbarButton: function SUI_handleStatusbarButton() {
+    if (this._needsSetup())
+      this.openSetup();
+    else
+      this.doSync();
+  },
+
+  //XXXzpao should be part of syncCommon.js - which we might want to make a module...
+  //        To be fixed in a followup (bug 583366)
+
+  /**
+   * Invoke the Sync setup wizard.
+   *
+   * @param wizardType
+   *        Indicates type of wizard to launch:
+   *          null    -- regular set up wizard
+   *          "pair"  -- pair a device first
+   *          "reset" -- reset sync
+   */
+
+  openSetup: function SUI_openSetup(wizardType) {
+    let win = Services.wm.getMostRecentWindow("Weave:AccountSetup");
+    if (win)
+      win.focus();
+    else {
+      window.openDialog("chrome://browser/content/sync/setup.xul",
+                        "weaveSetup", "centerscreen,chrome,resizable=no",
+                        wizardType);
+    }
+  },
+
+  openAddDevice: function () {
+    if (!Weave.Utils.ensureMPUnlocked())
+      return;
+
+    let win = Services.wm.getMostRecentWindow("Sync:AddDevice");
+    if (win)
+      win.focus();
+    else
+      window.openDialog("chrome://browser/content/sync/addDevice.xul",
+                        "syncAddDevice", "centerscreen,chrome,resizable=no");
+  },
+
+  openQuotaDialog: function SUI_openQuotaDialog() {
+    let win = Services.wm.getMostRecentWindow("Sync:ViewQuota");
+    if (win)
+      win.focus();
+    else
+      Services.ww.activeWindow.openDialog(
+        "chrome://browser/content/sync/quota.xul", "",
+        "centerscreen,chrome,dialog,modal");
+  },
+
+  openPrefs: function SUI_openPrefs() {
+    openPreferences("paneSync");
+  },
+
+
+  // Helpers
+  _updateLastSyncTime: function SUI__updateLastSyncTime() {
+    if (!gBrowser)
+      return;
+
+    let syncButton = document.getElementById("sync-button");
+    if (!syncButton)
+      return;
+
+    let lastSync = Services.prefs.getCharPref("services.sync.lastSync", "");
+    if (!lastSync || this._needsSetup()) {
+      syncButton.removeAttribute("tooltiptext");
+      return;
+    }
+
+    // Show the day-of-week and time (HH:MM) of last sync
+    let lastSyncDate = new Date(lastSync).toLocaleFormat("%a %H:%M");
+    let lastSyncLabel =
+      this._stringBundle.formatStringFromName("lastSync2.label", [lastSyncDate], 1);
+
+    syncButton.setAttribute("tooltiptext", lastSyncLabel);
+  },
+
+  clearError: function SUI_clearError(errorString) {
+    Weave.Notifications.removeAll(errorString);
+    this.updateUI();
+  },
+
+  onSyncFinish: function SUI_onSyncFinish() {
+    let title = this._stringBundle.GetStringFromName("error.sync.title");
+
+    // Clear out sync failures on a successful sync
+    this.clearError(title);
+
+    if (this._wasDelayed && Weave.Status.sync != Weave.NO_SYNC_NODE_FOUND) {
+      title = this._stringBundle.GetStringFromName("error.sync.no_node_found.title");
+      this.clearError(title);
+      this._wasDelayed = false;
+    }
+  },
+
+  onSyncError: function SUI_onSyncError() {
+    let title = this._stringBundle.GetStringFromName("error.sync.title");
+
+    if (Weave.Status.login != Weave.LOGIN_SUCCEEDED) {
+      this.onLoginError();
+      return;
+    }
+
+    let description;
+    if (Weave.Status.sync == Weave.PROLONGED_SYNC_FAILURE) {
+      // Convert to days
+      let lastSync =
+        Services.prefs.getIntPref("services.sync.errorhandler.networkFailureReportTimeout") / 86400;
+      description =
+        this._stringBundle.formatStringFromName("error.sync.prolonged_failure", [lastSync], 1);
+    } else {
+      let error = Weave.Utils.getErrorString(Weave.Status.sync);
+      description =
+        this._stringBundle.formatStringFromName("error.sync.description", [error], 1);
+    }
+    let priority = Weave.Notifications.PRIORITY_WARNING;
+    let buttons = [];
+
+    // Check if the client is outdated in some way
+    let outdated = Weave.Status.sync == Weave.VERSION_OUT_OF_DATE;
+    for (let [engine, reason] in Iterator(Weave.Status.engines))
+      outdated = outdated || reason == Weave.VERSION_OUT_OF_DATE;
+
+    if (outdated) {
+      description = this._stringBundle.GetStringFromName(
+        "error.sync.needUpdate.description");
+      buttons.push(new Weave.NotificationButton(
+        this._stringBundle.GetStringFromName("error.sync.needUpdate.label"),
+        this._stringBundle.GetStringFromName("error.sync.needUpdate.accesskey"),
+        function() {
+          window.openUILinkIn(Services.prefs.getCharPref("services.sync.outdated.url"), "tab");
+          return true;
+        }
+      ));
+    }
+    else if (Weave.Status.sync == Weave.OVER_QUOTA) {
+      description = this._stringBundle.GetStringFromName(
+        "error.sync.quota.description");
+      buttons.push(new Weave.NotificationButton(
+        this._stringBundle.GetStringFromName(
+          "error.sync.viewQuotaButton.label"),
+        this._stringBundle.GetStringFromName(
+          "error.sync.viewQuotaButton.accesskey"),
+        function() { gSyncUI.openQuotaDialog(); return true; } )
+      );
+    }
+    else if (Weave.Status.enforceBackoff) {
+      priority = Weave.Notifications.PRIORITY_INFO;
+      buttons.push(new Weave.NotificationButton(
+        this._stringBundle.GetStringFromName("error.sync.serverStatusButton.label"),
+        this._stringBundle.GetStringFromName("error.sync.serverStatusButton.accesskey"),
+        function() { gSyncUI.openServerStatus(); return true; }
+      ));
+    }
+    else {
+      priority = Weave.Notifications.PRIORITY_INFO;
+      buttons.push(new Weave.NotificationButton(
+        this._stringBundle.GetStringFromName("error.sync.tryAgainButton.label"),
+        this._stringBundle.GetStringFromName("error.sync.tryAgainButton.accesskey"),
+        function() { gSyncUI.doSync(); return true; }
+      ));
+    }
+
+    let notification =
+      new Weave.Notification(title, description, null, priority, buttons);
+    Weave.Notifications.replaceTitle(notification);
+
+    if (this._wasDelayed && Weave.Status.sync != Weave.NO_SYNC_NODE_FOUND) {
+      title = this._stringBundle.GetStringFromName("error.sync.no_node_found.title");
+      Weave.Notifications.removeAll(title);
+      this._wasDelayed = false;
+    }
+
+    this.updateUI();
+  },
+
+  observe: function SUI_observe(subject, topic, data) {
+    if (this._unloaded) {
+      Cu.reportError("SyncUI observer called after unload: " + topic);
+      return;
+    }
+
+    switch (topic) {
+      case "weave:service:sync:start":
+        this.onActivityStart();
+        break;
+      case "weave:ui:sync:finish":
+        this.onSyncFinish();
+        break;
+      case "weave:ui:sync:error":
+        this.onSyncError();
+        break;
+      case "weave:service:sync:delayed":
+        this.onSyncDelay();
+        break;
+      case "weave:service:quota:remaining":
+        this.onQuotaNotice();
+        break;
+      case "weave:service:setup-complete":
+        this.onSetupComplete();
+        break;
+      case "weave:service:login:start":
+        this.onActivityStart();
+        break;
+      case "weave:service:login:finish":
+        this.onLoginFinish();
+        break;
+      case "weave:ui:login:error":
+        this.onLoginError();
+        break;
+      case "weave:service:logout:finish":
+        this.onLogout();
+        break;
+      case "weave:service:start-over":
+        this.onStartOver();
+        break;
+      case "weave:service:ready":
+        this.initUI();
+        break;
+      case "weave:notification:added":
+        this.initNotifications();
+        break;
+      case "weave:ui:clear-error":
+        this.clearError();
+        break;
+    }
+  },
+
+  QueryInterface: XPCOMUtils.generateQI([
+    Ci.nsIObserver,
+    Ci.nsISupportsWeakReference
+  ])
+};
+
+XPCOMUtils.defineLazyGetter(gSyncUI, "_stringBundle", function() {
+  //XXXzpao these strings should probably be moved from /services to /browser... (bug 583381)
+  //        but for now just make it work
+  return Cc["@mozilla.org/intl/stringbundle;1"].
+         getService(Ci.nsIStringBundleService).
+         createBundle("chrome://weave/locale/services/sync.properties");
+});
+
diff --git a/webbrowser/base/content/browser-tabPreviews.js b/webbrowser/base/content/browser-tabPreviews.js
new file mode 100644
index 0000000..e0755b8
--- /dev/null
+++ b/webbrowser/base/content/browser-tabPreviews.js
@@ -0,0 +1,1058 @@
+/*
+#ifdef 0
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#endif
+ */
+
+/**
+ * Tab previews utility, produces thumbnails
+ */
+var tabPreviews = {
+  aspectRatio: 0.5625, // 16:9
+
+  get width() {
+    delete this.width;
+    return this.width = Math.ceil(screen.availWidth / 5.75);
+  },
+
+  get height() {
+    delete this.height;
+    return this.height = Math.round(this.width * this.aspectRatio);
+  },
+
+  init: function tabPreviews_init() {
+    if (this._selectedTab)
+      return;
+    this._selectedTab = gBrowser.selectedTab;
+
+    gBrowser.tabContainer.addEventListener("TabSelect", this, false);
+    gBrowser.tabContainer.addEventListener("SSTabRestored", this, false);
+  },
+
+  get: function tabPreviews_get(aTab) {
+    let uri = aTab.linkedBrowser.currentURI.spec;
+
+    if (aTab.__thumbnail_lastURI &&
+        aTab.__thumbnail_lastURI != uri) {
+      aTab.__thumbnail = null;
+      aTab.__thumbnail_lastURI = null;
+    }
+
+    if (aTab.__thumbnail)
+      return aTab.__thumbnail;
+
+    if (aTab.getAttribute("pending") == "true") {
+      let img = new Image;
+      img.src = PageThumbs.getThumbnailURL(uri);
+      return img;
+    }
+
+    return this.capture(aTab, !aTab.hasAttribute("busy"));
+  },
+
+  capture: function tabPreviews_capture(aTab, aStore) {
+    var thumbnail = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+    thumbnail.mozOpaque = true;
+    thumbnail.height = this.height;
+    thumbnail.width = this.width;
+
+    var ctx = thumbnail.getContext("2d");
+    var win = aTab.linkedBrowser.contentWindow;
+    var snippetWidth = win.innerWidth * .6;
+    var scale = this.width / snippetWidth;
+    ctx.scale(scale, scale);
+    ctx.drawWindow(win, win.scrollX, win.scrollY,
+                   snippetWidth, snippetWidth * this.aspectRatio, "rgb(255,255,255)");
+
+    if (aStore &&
+        aTab.linkedBrowser /* bug 795608: the tab may got removed while drawing the thumbnail */) {
+      aTab.__thumbnail = thumbnail;
+      aTab.__thumbnail_lastURI = aTab.linkedBrowser.currentURI.spec;
+    }
+
+    return thumbnail;
+  },
+
+  handleEvent: function tabPreviews_handleEvent(event) {
+    switch (event.type) {
+      case "TabSelect":
+        if (this._selectedTab &&
+            this._selectedTab.parentNode &&
+            !this._pendingUpdate) {
+          // Generate a thumbnail for the tab that was selected.
+          // The timeout keeps the UI snappy and prevents us from generating thumbnails
+          // for tabs that will be closed. During that timeout, don't generate other
+          // thumbnails in case multiple TabSelect events occur fast in succession.
+          this._pendingUpdate = true;
+          setTimeout(function (self, aTab) {
+            self._pendingUpdate = false;
+            if (aTab.parentNode &&
+                !aTab.hasAttribute("busy") &&
+                !aTab.hasAttribute("pending"))
+              self.capture(aTab, true);
+          }, 2000, this, this._selectedTab);
+        }
+        this._selectedTab = event.target;
+        break;
+      case "SSTabRestored":
+        this.capture(event.target, true);
+        break;
+    }
+  }
+};
+
+var tabPreviewPanelHelper = {
+  opening: function (host) {
+    host.panel.hidden = false;
+
+    var handler = this._generateHandler(host);
+    host.panel.addEventListener("popupshown", handler, false);
+    host.panel.addEventListener("popuphiding", handler, false);
+
+    host._prevFocus = document.commandDispatcher.focusedElement;
+  },
+  _generateHandler: function (host) {
+    var self = this;
+    return function (event) {
+      if (event.target == host.panel) {
+        host.panel.removeEventListener(event.type, arguments.callee, false);
+        self["_" + event.type](host);
+      }
+    };
+  },
+  _popupshown: function (host) {
+    if ("setupGUI" in host)
+      host.setupGUI();
+  },
+  _popuphiding: function (host) {
+    if ("suspendGUI" in host)
+      host.suspendGUI();
+
+    if (host._prevFocus) {
+      Cc["@mozilla.org/focus-manager;1"]
+        .getService(Ci.nsIFocusManager)
+        .setFocus(host._prevFocus, Ci.nsIFocusManager.FLAG_NOSCROLL);
+      host._prevFocus = null;
+    } else
+      gBrowser.selectedBrowser.focus();
+
+    if (host.tabToSelect) {
+      gBrowser.selectedTab = host.tabToSelect;
+      host.tabToSelect = null;
+    }
+  }
+};
+
+/**
+ * Ctrl-Tab panel
+ */
+var ctrlTab = {
+  get panel () {
+    delete this.panel;
+    return this.panel = document.getElementById("ctrlTab-panel");
+  },
+  get showAllButton () {
+    delete this.showAllButton;
+    return this.showAllButton = document.getElementById("ctrlTab-showAll");
+  },
+  get previews () {
+    delete this.previews;
+    return this.previews = this.panel.getElementsByClassName("ctrlTab-preview");
+  },
+  get recentlyUsedLimit () {
+    delete this.recentlyUsedLimit;
+    return this.recentlyUsedLimit = gPrefService.getIntPref("browser.ctrlTab.recentlyUsedLimit");
+  },
+  get keys () {
+    var keys = {};
+    ["close", "find", "selectAll"].forEach(function (key) {
+      keys[key] = document.getElementById("key_" + key)
+                          .getAttribute("key")
+                          .toLocaleLowerCase().charCodeAt(0);
+    });
+    delete this.keys;
+    return this.keys = keys;
+  },
+  _selectedIndex: 0,
+  get selected () this._selectedIndex < 0 ?
+                    document.activeElement :
+                    this.previews.item(this._selectedIndex),
+  get isOpen   () this.panel.state == "open" || this.panel.state == "showing" || this._timer,
+  get tabCount () this.tabList.length,
+  get tabPreviewCount () Math.min(this.previews.length - 1, this.tabCount),
+  get canvasWidth () Math.min(tabPreviews.width,
+                              Math.ceil(screen.availWidth * .85 / this.tabPreviewCount)),
+  get canvasHeight () Math.round(this.canvasWidth * tabPreviews.aspectRatio),
+
+  get tabList () {
+    if (this._tabList)
+      return this._tabList;
+
+    // Using gBrowser.tabs instead of gBrowser.visibleTabs, as the latter
+    // exlcudes closing tabs, breaking the following loop in case the the
+    // selected tab is closing.
+    let list = Array.filter(gBrowser.tabs, function (tab) !tab.hidden);
+
+    // Rotate the list until the selected tab is first
+    while (!list[0].selected)
+      list.push(list.shift());
+
+    list = list.filter(function (tab) !tab.closing);
+
+    if (this.recentlyUsedLimit != 0) {
+      let recentlyUsedTabs = [];
+      for (let tab of this._recentlyUsedTabs) {
+        if (!tab.hidden && !tab.closing) {
+          recentlyUsedTabs.push(tab);
+          if (this.recentlyUsedLimit > 0 && recentlyUsedTabs.length >= this.recentlyUsedLimit)
+            break;
+        }
+      }
+      for (let i = recentlyUsedTabs.length - 1; i >= 0; i--) {
+        list.splice(list.indexOf(recentlyUsedTabs[i]), 1);
+        list.unshift(recentlyUsedTabs[i]);
+      }
+    }
+
+    return this._tabList = list;
+  },
+
+  init: function ctrlTab_init() {
+    if (!this._recentlyUsedTabs) {
+      tabPreviews.init();
+
+      this._recentlyUsedTabs = [gBrowser.selectedTab];
+      this._init(true);
+    }
+  },
+
+  uninit: function ctrlTab_uninit() {
+    this._recentlyUsedTabs = null;
+    this._init(false);
+  },
+
+  prefName: "browser.ctrlTab.previews",
+  readPref: function ctrlTab_readPref() {
+    var enable =
+      gPrefService.getBoolPref(this.prefName) &&
+      (!gPrefService.prefHasUserValue("browser.ctrlTab.disallowForScreenReaders") ||
+       !gPrefService.getBoolPref("browser.ctrlTab.disallowForScreenReaders"));
+
+    if (enable)
+      this.init();
+    else
+      this.uninit();
+  },
+  observe: function (aSubject, aTopic, aPrefName) {
+    this.readPref();
+  },
+
+  updatePreviews: function ctrlTab_updatePreviews() {
+    for (let i = 0; i < this.previews.length; i++)
+      this.updatePreview(this.previews[i], this.tabList[i]);
+
+    var showAllLabel = gNavigatorBundle.getString("ctrlTab.showAll.label");
+    this.showAllButton.label =
+      PluralForm.get(this.tabCount, showAllLabel).replace("#1", this.tabCount);
+  },
+
+  updatePreview: function ctrlTab_updatePreview(aPreview, aTab) {
+    if (aPreview == this.showAllButton)
+      return;
+
+    aPreview._tab = aTab;
+
+    if (aPreview.firstChild)
+      aPreview.removeChild(aPreview.firstChild);
+    if (aTab) {
+      let canvasWidth = this.canvasWidth;
+      let canvasHeight = this.canvasHeight;
+      aPreview.appendChild(tabPreviews.get(aTab));
+      aPreview.setAttribute("label", aTab.label);
+      aPreview.setAttribute("tooltiptext", aTab.label);
+      aPreview.setAttribute("crop", aTab.crop);
+      aPreview.setAttribute("canvaswidth", canvasWidth);
+      aPreview.setAttribute("canvasstyle",
+                            "max-width:" + canvasWidth + "px;" +
+                            "min-width:" + canvasWidth + "px;" +
+                            "max-height:" + canvasHeight + "px;" +
+                            "min-height:" + canvasHeight + "px;");
+      if (aTab.image)
+        aPreview.setAttribute("image", aTab.image);
+      else
+        aPreview.removeAttribute("image");
+      aPreview.hidden = false;
+    } else {
+      aPreview.hidden = true;
+      aPreview.removeAttribute("label");
+      aPreview.removeAttribute("tooltiptext");
+      aPreview.removeAttribute("image");
+    }
+  },
+
+  advanceFocus: function ctrlTab_advanceFocus(aForward) {
+    let selectedIndex = Array.indexOf(this.previews, this.selected);
+    do {
+      selectedIndex += aForward ? 1 : -1;
+      if (selectedIndex < 0)
+        selectedIndex = this.previews.length - 1;
+      else if (selectedIndex >= this.previews.length)
+        selectedIndex = 0;
+    } while (this.previews[selectedIndex].hidden);
+
+    if (this._selectedIndex == -1) {
+      // Focus is already in the panel.
+      this.previews[selectedIndex].focus();
+    } else {
+      this._selectedIndex = selectedIndex;
+    }
+
+    if (this._timer) {
+      clearTimeout(this._timer);
+      this._timer = null;
+      this._openPanel();
+    }
+  },
+
+  _mouseOverFocus: function ctrlTab_mouseOverFocus(aPreview) {
+    if (this._trackMouseOver)
+      aPreview.focus();
+  },
+
+  pick: function ctrlTab_pick(aPreview) {
+    if (!this.tabCount)
+      return;
+
+    var select = (aPreview || this.selected);
+
+    if (select == this.showAllButton)
+      this.showAllTabs();
+    else
+      this.close(select._tab);
+  },
+
+  showAllTabs: function ctrlTab_showAllTabs(aPreview) {
+    this.close();
+    document.getElementById("Browser:ShowAllTabs").doCommand();
+  },
+
+  remove: function ctrlTab_remove(aPreview) {
+    if (aPreview._tab)
+      gBrowser.removeTab(aPreview._tab);
+  },
+
+  attachTab: function ctrlTab_attachTab(aTab, aPos) {
+    if (aPos == 0)
+      this._recentlyUsedTabs.unshift(aTab);
+    else if (aPos)
+      this._recentlyUsedTabs.splice(aPos, 0, aTab);
+    else
+      this._recentlyUsedTabs.push(aTab);
+  },
+  detachTab: function ctrlTab_detachTab(aTab) {
+    var i = this._recentlyUsedTabs.indexOf(aTab);
+    if (i >= 0)
+      this._recentlyUsedTabs.splice(i, 1);
+  },
+
+  open: function ctrlTab_open() {
+    if (this.isOpen)
+      return;
+
+    allTabs.close();
+
+    document.addEventListener("keyup", this, true);
+
+    this.updatePreviews();
+    this._selectedIndex = 1;
+
+    // Add a slight delay before showing the UI, so that a quick
+    // "ctrl-tab" keypress just flips back to the MRU tab.
+    this._timer = setTimeout(function (self) {
+      self._timer = null;
+      self._openPanel();
+    }, 200, this);
+  },
+
+  _openPanel: function ctrlTab_openPanel() {
+    tabPreviewPanelHelper.opening(this);
+
+    this.panel.width = Math.min(screen.availWidth * .99,
+                                this.canvasWidth * 1.25 * this.tabPreviewCount);
+    var estimateHeight = this.canvasHeight * 1.25 + 75;
+    this.panel.openPopupAtScreen(screen.availLeft + (screen.availWidth - this.panel.width) / 2,
+                                 screen.availTop + (screen.availHeight - estimateHeight) / 2,
+                                 false);
+  },
+
+  close: function ctrlTab_close(aTabToSelect) {
+    if (!this.isOpen)
+      return;
+
+    if (this._timer) {
+      clearTimeout(this._timer);
+      this._timer = null;
+      this.suspendGUI();
+      if (aTabToSelect)
+        gBrowser.selectedTab = aTabToSelect;
+      return;
+    }
+
+    this.tabToSelect = aTabToSelect;
+    this.panel.hidePopup();
+  },
+
+  setupGUI: function ctrlTab_setupGUI() {
+    this.selected.focus();
+    this._selectedIndex = -1;
+
+    // Track mouse movement after a brief delay so that the item that happens
+    // to be under the mouse pointer initially won't be selected unintentionally.
+    this._trackMouseOver = false;
+    setTimeout(function (self) {
+      if (self.isOpen)
+        self._trackMouseOver = true;
+    }, 0, this);
+  },
+
+  suspendGUI: function ctrlTab_suspendGUI() {
+    document.removeEventListener("keyup", this, true);
+
+    Array.forEach(this.previews, function (preview) {
+      this.updatePreview(preview, null);
+    }, this);
+
+    this._tabList = null;
+  },
+
+  onKeyPress: function ctrlTab_onKeyPress(event) {
+    var isOpen = this.isOpen;
+
+    if (isOpen) {
+      event.preventDefault();
+      event.stopPropagation();
+    }
+
+    switch (event.keyCode) {
+      case event.DOM_VK_TAB:
+        if (event.ctrlKey && !event.altKey && !event.metaKey) {
+          if (isOpen) {
+            this.advanceFocus(!event.shiftKey);
+          } else if (!event.shiftKey) {
+            event.preventDefault();
+            event.stopPropagation();
+            let tabs = gBrowser.visibleTabs;
+            if (tabs.length > 2) {
+              this.open();
+            } else if (tabs.length == 2) {
+              let index = tabs[0].selected ? 1 : 0;
+              gBrowser.selectedTab = tabs[index];
+            }
+          }
+        }
+        break;
+      default:
+        if (isOpen && event.ctrlKey) {
+          if (event.keyCode == event.DOM_VK_DELETE) {
+            this.remove(this.selected);
+            break;
+          }
+          switch (event.charCode) {
+            case this.keys.close:
+              this.remove(this.selected);
+              break;
+            case this.keys.find:
+            case this.keys.selectAll:
+              this.showAllTabs();
+              break;
+          }
+        }
+    }
+  },
+
+  removeClosingTabFromUI: function ctrlTab_removeClosingTabFromUI(aTab) {
+    if (this.tabCount == 2) {
+      this.close();
+      return;
+    }
+
+    this._tabList = null;
+    this.updatePreviews();
+
+    if (this.selected.hidden)
+      this.advanceFocus(false);
+    if (this.selected == this.showAllButton)
+      this.advanceFocus(false);
+
+    // If the current tab is removed, another tab can steal our focus.
+    if (aTab.selected && this.panel.state == "open") {
+      setTimeout(function (selected) {
+        selected.focus();
+      }, 0, this.selected);
+    }
+  },
+
+  handleEvent: function ctrlTab_handleEvent(event) {
+    switch (event.type) {
+      case "TabAttrModified":
+        // tab attribute modified (e.g. label, crop, busy, image, selected)
+        for (let i = this.previews.length - 1; i >= 0; i--) {
+          if (this.previews[i]._tab && this.previews[i]._tab == event.target) {
+            this.updatePreview(this.previews[i], event.target);
+            break;
+          }
+        }
+        break;
+      case "TabSelect":
+        this.detachTab(event.target);
+        this.attachTab(event.target, 0);
+        break;
+      case "TabOpen":
+        this.attachTab(event.target, 1);
+        break;
+      case "TabClose":
+        this.detachTab(event.target);
+        if (this.isOpen)
+          this.removeClosingTabFromUI(event.target);
+        break;
+      case "keypress":
+        this.onKeyPress(event);
+        break;
+      case "keyup":
+        if (event.keyCode == event.DOM_VK_CONTROL)
+          this.pick();
+        break;
+    }
+  },
+
+  _init: function ctrlTab__init(enable) {
+    var toggleEventListener = enable ? "addEventListener" : "removeEventListener";
+
+    var tabContainer = gBrowser.tabContainer;
+    tabContainer[toggleEventListener]("TabOpen", this, false);
+    tabContainer[toggleEventListener]("TabAttrModified", this, false);
+    tabContainer[toggleEventListener]("TabSelect", this, false);
+    tabContainer[toggleEventListener]("TabClose", this, false);
+
+    document[toggleEventListener]("keypress", this, false);
+    gBrowser.mTabBox.handleCtrlTab = !enable;
+
+    // If we're not running, hide the "Show All Tabs" menu item,
+    // as Shift+Ctrl+Tab will be handled by the tab bar.
+    document.getElementById("menu_showAllTabs").hidden = !enable;
+
+    // Also disable the <key> to ensure Shift+Ctrl+Tab never triggers
+    // Show All Tabs.
+    var key_showAllTabs = document.getElementById("key_showAllTabs");
+    if (enable)
+      key_showAllTabs.removeAttribute("disabled");
+    else
+      key_showAllTabs.setAttribute("disabled", "true");
+  }
+};
+
+
+/**
+ * All Tabs panel
+ */
+var allTabs = {
+  get panel () {
+    delete this.panel;
+    return this.panel = document.getElementById("allTabs-panel");
+  },
+  get filterField () {
+    delete this.filterField;
+    return this.filterField = document.getElementById("allTabs-filter");
+  },
+  get container () {
+    delete this.container;
+    return this.container = document.getElementById("allTabs-container");
+  },
+  get tabCloseButton () {
+    delete this.tabCloseButton;
+    return this.tabCloseButton = document.getElementById("allTabs-tab-close-button");
+  },
+  get toolbarButton() document.getElementById("alltabs-button"),
+  get previews () this.container.getElementsByClassName("allTabs-preview"),
+  get isOpen () this.panel.state == "open" || this.panel.state == "showing",
+
+  init: function allTabs_init() {
+    if (this._initiated)
+      return;
+    this._initiated = true;
+
+    tabPreviews.init();
+
+    Array.forEach(gBrowser.tabs, function (tab) {
+      this._addPreview(tab);
+    }, this);
+
+    gBrowser.tabContainer.addEventListener("TabOpen", this, false);
+    gBrowser.tabContainer.addEventListener("TabAttrModified", this, false);
+    gBrowser.tabContainer.addEventListener("TabMove", this, false);
+    gBrowser.tabContainer.addEventListener("TabClose", this, false);
+  },
+
+  uninit: function allTabs_uninit() {
+    if (!this._initiated)
+      return;
+
+    gBrowser.tabContainer.removeEventListener("TabOpen", this, false);
+    gBrowser.tabContainer.removeEventListener("TabAttrModified", this, false);
+    gBrowser.tabContainer.removeEventListener("TabMove", this, false);
+    gBrowser.tabContainer.removeEventListener("TabClose", this, false);
+
+    while (this.container.hasChildNodes())
+      this.container.removeChild(this.container.firstChild);
+
+    this._initiated = false;
+  },
+
+  prefName: "browser.allTabs.previews",
+  readPref: function allTabs_readPref() {
+    var allTabsButton = this.toolbarButton;
+    if (!allTabsButton)
+      return;
+
+    if (gPrefService.getBoolPref(this.prefName)) {
+      allTabsButton.removeAttribute("type");
+      allTabsButton.setAttribute("command", "Browser:ShowAllTabs");
+    } else {
+      allTabsButton.setAttribute("type", "menu");
+      allTabsButton.removeAttribute("command");
+      allTabsButton.removeAttribute("oncommand");
+    }
+  },
+  observe: function (aSubject, aTopic, aPrefName) {
+    this.readPref();
+  },
+
+  pick: function allTabs_pick(aPreview) {
+    if (!aPreview)
+      aPreview = this._firstVisiblePreview;
+    if (aPreview)
+      this.tabToSelect = aPreview._tab;
+
+    this.close();
+  },
+
+  closeTab: function allTabs_closeTab(event) {
+    this.filterField.focus();
+    gBrowser.removeTab(event.currentTarget._targetPreview._tab);
+  },
+
+  filter: function allTabs_filter() {
+    if (this._currentFilter == this.filterField.value)
+      return;
+
+    this._currentFilter = this.filterField.value;
+
+    var filter = this._currentFilter.split(/\s+/g);
+    this._visible = 0;
+    Array.forEach(this.previews, function (preview) {
+      var tab = preview._tab;
+      var matches = 0;
+      if (filter.length && !tab.hidden) {
+        let tabstring = tab.linkedBrowser.currentURI.spec;
+        try {
+          tabstring = decodeURI(tabstring);
+        } catch (e) {}
+        tabstring = tab.label + " " + tab.label.toLocaleLowerCase() + " " + tabstring;
+        for (let i = 0; i < filter.length; i++)
+          matches += tabstring.includes(filter[i]);
+      }
+      if (matches < filter.length || tab.hidden) {
+        preview.hidden = true;
+      }
+      else {
+        this._visible++;
+        this._updatePreview(preview);
+        preview.hidden = false;
+      }
+    }, this);
+
+    this._reflow();
+  },
+
+  open: function allTabs_open() {
+    var allTabsButton = this.toolbarButton;
+    if (allTabsButton &&
+        allTabsButton.getAttribute("type") == "menu") {
+      // Without setTimeout, the menupopup won't stay open when invoking
+      // "View > Show All Tabs" and the menu bar auto-hides.
+      setTimeout(function () {
+        allTabsButton.open = true;
+      }, 0);
+      return;
+    }
+
+    this.init();
+
+    if (this.isOpen)
+      return;
+
+    this._maxPanelHeight = Math.max(gBrowser.clientHeight, screen.availHeight / 2);
+    this._maxPanelWidth = Math.max(gBrowser.clientWidth, screen.availWidth / 2);
+
+    this.filter();
+
+    tabPreviewPanelHelper.opening(this);
+
+    this.panel.popupBoxObject.setConsumeRollupEvent(PopupBoxObject.ROLLUP_NO_CONSUME);
+    this.panel.openPopup(gBrowser, "overlap", 0, 0, false, true);
+  },
+
+  close: function allTabs_close() {
+    this.panel.hidePopup();
+  },
+
+  setupGUI: function allTabs_setupGUI() {
+    this.filterField.focus();
+    this.filterField.placeholder = this.filterField.tooltipText;
+
+    this.panel.addEventListener("keypress", this, false);
+    this.panel.addEventListener("keypress", this, true);
+    this._browserCommandSet.addEventListener("command", this, false);
+
+    // When the panel is open, a second click on the all tabs button should
+    // close the panel but not re-open it.
+    document.getElementById("Browser:ShowAllTabs").setAttribute("disabled", "true");
+  },
+
+  suspendGUI: function allTabs_suspendGUI() {
+    this.filterField.placeholder = "";
+    this.filterField.value = "";
+    this._currentFilter = null;
+
+    this._updateTabCloseButton();
+
+    this.panel.removeEventListener("keypress", this, false);
+    this.panel.removeEventListener("keypress", this, true);
+    this._browserCommandSet.removeEventListener("command", this, false);
+
+    setTimeout(function () {
+      document.getElementById("Browser:ShowAllTabs").removeAttribute("disabled");
+    }, 300);
+  },
+
+  handleEvent: function allTabs_handleEvent(event) {
+    if (event.type.startsWith("Tab")) {
+      var tab = event.target;
+      if (event.type != "TabOpen")
+        var preview = this._getPreview(tab);
+    }
+    switch (event.type) {
+      case "TabAttrModified":
+        // tab attribute modified (e.g. label, crop, busy, image)
+        if (!preview.hidden)
+          this._updatePreview(preview);
+        break;
+      case "TabOpen":
+        if (this.isOpen)
+          this.close();
+        this._addPreview(tab);
+        break;
+      case "TabMove":
+        let siblingPreview = tab.nextSibling &&
+                             this._getPreview(tab.nextSibling);
+        if (siblingPreview)
+          siblingPreview.parentNode.insertBefore(preview, siblingPreview);
+        else
+          this.container.lastChild.appendChild(preview);
+        if (this.isOpen && !preview.hidden) {
+          this._reflow();
+          preview.focus();
+        }
+        break;
+      case "TabClose":
+        this._removePreview(preview);
+        break;
+      case "keypress":
+        this._onKeyPress(event);
+        break;
+      case "command":
+        if (event.target.id != "Browser:ShowAllTabs") {
+          // Close the panel when there's a browser command executing in the background.
+          this.close();
+        }
+        break;
+    }
+  },
+
+  _visible: 0,
+  _currentFilter: null,
+  get _stack () {
+    delete this._stack;
+    return this._stack = document.getElementById("allTabs-stack");
+  },
+  get _browserCommandSet () {
+    delete this._browserCommandSet;
+    return this._browserCommandSet = document.getElementById("mainCommandSet");
+  },
+  get _previewLabelHeight () {
+    delete this._previewLabelHeight;
+    return this._previewLabelHeight = parseInt(getComputedStyle(this.previews[0], "").lineHeight);
+  },
+
+  get _visiblePreviews ()
+    Array.filter(this.previews, function (preview) !preview.hidden),
+
+  get _firstVisiblePreview () {
+    if (this._visible == 0)
+      return null;
+    var previews = this.previews;
+    for (let i = 0; i < previews.length; i++) {
+      if (!previews[i].hidden)
+        return previews[i];
+    }
+    return null;
+  },
+
+  _reflow: function allTabs_reflow() {
+    this._updateTabCloseButton();
+
+    const CONTAINER_MAX_WIDTH = this._maxPanelWidth * .95;
+    const CONTAINER_MAX_HEIGHT = this._maxPanelHeight - 35;
+    // the size of the whole preview relative to the thumbnail
+    const REL_PREVIEW_THUMBNAIL = 1.2;
+    const REL_PREVIEW_HEIGHT_WIDTH = tabPreviews.height / tabPreviews.width;
+    const PREVIEW_MAX_WIDTH = tabPreviews.width * REL_PREVIEW_THUMBNAIL;
+
+    var rows, previewHeight, previewWidth, outerHeight;
+    this._columns = Math.floor(CONTAINER_MAX_WIDTH / PREVIEW_MAX_WIDTH);
+    do {
+      rows = Math.ceil(this._visible / this._columns);
+      previewWidth = Math.min(PREVIEW_MAX_WIDTH,
+                              Math.round(CONTAINER_MAX_WIDTH / this._columns));
+      previewHeight = Math.round(previewWidth * REL_PREVIEW_HEIGHT_WIDTH);
+      outerHeight = previewHeight + this._previewLabelHeight;
+    } while (rows * outerHeight > CONTAINER_MAX_HEIGHT && ++this._columns);
+
+    var outerWidth = previewWidth;
+    {
+      let innerWidth = Math.ceil(previewWidth / REL_PREVIEW_THUMBNAIL);
+      let innerHeight = Math.ceil(previewHeight / REL_PREVIEW_THUMBNAIL);
+      var canvasStyle = "max-width:" + innerWidth + "px;" +
+                        "min-width:" + innerWidth + "px;" +
+                        "max-height:" + innerHeight + "px;" +
+                        "min-height:" + innerHeight + "px;";
+    }
+
+    var previews = Array.slice(this.previews);
+
+    while (this.container.hasChildNodes())
+      this.container.removeChild(this.container.firstChild);
+    for (let i = rows || 1; i > 0; i--)
+      this.container.appendChild(document.createElement("hbox"));
+
+    var row = this.container.firstChild;
+    var colCount = 0;
+    previews.forEach(function (preview) {
+      if (!preview.hidden &&
+          ++colCount > this._columns) {
+        row = row.nextSibling;
+        colCount = 1;
+      }
+      preview.setAttribute("minwidth", outerWidth);
+      preview.setAttribute("height", outerHeight);
+      preview.setAttribute("canvasstyle", canvasStyle);
+      preview.removeAttribute("closebuttonhover");
+      row.appendChild(preview);
+    }, this);
+
+    this._stack.width = this._maxPanelWidth;
+    this.container.width = Math.ceil(outerWidth * Math.min(this._columns, this._visible));
+    this.container.left = Math.round((this._maxPanelWidth - this.container.width) / 2);
+    this.container.maxWidth = this._maxPanelWidth - this.container.left;
+    this.container.maxHeight = rows * outerHeight;
+  },
+
+  _addPreview: function allTabs_addPreview(aTab) {
+    var preview = document.createElement("button");
+    preview.className = "allTabs-preview";
+    preview._tab = aTab;
+    this.container.lastChild.appendChild(preview);
+  },
+
+  _removePreview: function allTabs_removePreview(aPreview) {
+    var updateUI = (this.isOpen && !aPreview.hidden);
+    aPreview._tab = null;
+    aPreview.parentNode.removeChild(aPreview);
+    if (updateUI) {
+      this._visible--;
+      this._reflow();
+      this.filterField.focus();
+    }
+  },
+
+  _getPreview: function allTabs_getPreview(aTab) {
+    var previews = this.previews;
+    for (let i = 0; i < previews.length; i++)
+      if (previews[i]._tab == aTab)
+        return previews[i];
+    return null;
+  },
+
+  _updateTabCloseButton: function allTabs_updateTabCloseButton(event) {
+    if (event && event.target == this.tabCloseButton)
+      return;
+
+    if (this.tabCloseButton._targetPreview) {
+      if (event && event.target == this.tabCloseButton._targetPreview)
+        return;
+
+      this.tabCloseButton._targetPreview.removeAttribute("closebuttonhover");
+    }
+
+    if (event &&
+        event.target.parentNode.parentNode == this.container &&
+        (event.target._tab.previousSibling || event.target._tab.nextSibling)) {
+      let canvas = event.target.firstChild.getBoundingClientRect();
+      let container = this.container.getBoundingClientRect();
+      let tabCloseButton = this.tabCloseButton.getBoundingClientRect();
+      let alignLeft = getComputedStyle(this.panel, "").direction == "rtl";
+#ifdef XP_MACOSX
+      alignLeft = !alignLeft;
+#endif
+      this.tabCloseButton.left = canvas.left -
+                                 container.left +
+                                 parseInt(this.container.left) +
+                                 (alignLeft ? 0 :
+                                  canvas.width - tabCloseButton.width);
+      this.tabCloseButton.top = canvas.top - container.top;
+      this.tabCloseButton._targetPreview = event.target;
+      this.tabCloseButton.style.visibility = "visible";
+      event.target.setAttribute("closebuttonhover", "true");
+    } else {
+      this.tabCloseButton.style.visibility = "hidden";
+      this.tabCloseButton.left = this.tabCloseButton.top = 0;
+      this.tabCloseButton._targetPreview = null;
+    }
+  },
+
+  _updatePreview: function allTabs_updatePreview(aPreview) {
+    aPreview.setAttribute("label", aPreview._tab.label);
+    aPreview.setAttribute("tooltiptext", aPreview._tab.label);
+    aPreview.setAttribute("crop", aPreview._tab.crop);
+    if (aPreview._tab.image)
+      aPreview.setAttribute("image", aPreview._tab.image);
+    else
+      aPreview.removeAttribute("image");
+  
+    aPreview.removeAttribute("soundplaying");
+    aPreview.removeAttribute("muted");
+    if (aPreview._tab.hasAttribute("muted"))
+      aPreview.setAttribute("muted", "true");
+    else if (aPreview._tab.hasAttribute("soundplaying"))
+      aPreview.setAttribute("soundplaying", "true");
+
+    var thumbnail = tabPreviews.get(aPreview._tab);
+    if (aPreview.firstChild) {
+      if (aPreview.firstChild == thumbnail)
+        return;
+      aPreview.removeChild(aPreview.firstChild);
+    }
+    aPreview.appendChild(thumbnail);
+  },
+
+  _onKeyPress: function allTabs_onKeyPress(event) {
+    if (event.eventPhase == event.CAPTURING_PHASE) {
+      this._onCapturingKeyPress(event);
+      return;
+    }
+
+    if (event.keyCode == event.DOM_VK_ESCAPE) {
+      this.close();
+      event.preventDefault();
+      event.stopPropagation();
+      return;
+    }
+
+    if (event.target == this.filterField) {
+      switch (event.keyCode) {
+        case event.DOM_VK_UP:
+          if (this._visible) {
+            let previews = this._visiblePreviews;
+            let columns = Math.min(previews.length, this._columns);
+            previews[Math.floor(previews.length / columns) * columns - 1].focus();
+            event.preventDefault();
+            event.stopPropagation();
+          }
+          break;
+        case event.DOM_VK_DOWN:
+          if (this._visible) {
+            this._firstVisiblePreview.focus();
+            event.preventDefault();
+            event.stopPropagation();
+          }
+          break;
+      }
+    }
+  },
+
+  _onCapturingKeyPress: function allTabs_onCapturingKeyPress(event) {
+    switch (event.keyCode) {
+      case event.DOM_VK_UP:
+      case event.DOM_VK_DOWN:
+        if (event.target != this.filterField)
+          this._advanceFocusVertically(event);
+        break;
+      case event.DOM_VK_RETURN:
+        if (event.target == this.filterField) {
+          this.filter();
+          this.pick();
+          event.preventDefault();
+          event.stopPropagation();
+        }
+        break;
+    }
+  },
+
+  _advanceFocusVertically: function allTabs_advanceFocusVertically(event) {
+    var preview = document.activeElement;
+    if (!preview || preview.parentNode.parentNode != this.container)
+      return;
+
+    event.stopPropagation();
+
+    var up = (event.keyCode == event.DOM_VK_UP);
+    var previews = this._visiblePreviews;
+
+    if (up && preview == previews[0]) {
+      this.filterField.focus();
+      return;
+    }
+
+    var i       = previews.indexOf(preview);
+    var columns = Math.min(previews.length, this._columns);
+    var column  = i % columns;
+    var row     = Math.floor(i / columns);
+
+    function newIndex()    row * columns + column;
+    function outOfBounds() newIndex() >= previews.length;
+
+    if (up) {
+      row--;
+      if (row < 0) {
+        let rows = Math.ceil(previews.length / columns);
+        row = rows - 1;
+        column--;
+        if (outOfBounds())
+          row--;
+      }
+    } else {
+      row++;
+      if (outOfBounds()) {
+        if (column == columns - 1) {
+          this.filterField.focus();
+          return;
+        }
+        row = 0;
+        column++;
+      }
+    }
+    previews[newIndex()].focus();
+  }
+};
diff --git a/webbrowser/base/content/browser-tabPreviews.xml b/webbrowser/base/content/browser-tabPreviews.xml
new file mode 100644
index 0000000..4f54321
--- /dev/null
+++ b/webbrowser/base/content/browser-tabPreviews.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0"?>
+
+# -*- Mode: HTML -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<bindings id="tabPreviews"
+          xmlns="http://www.mozilla.org/xbl"
+          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+          xmlns:xbl="http://www.mozilla.org/xbl">
+  <binding id="ctrlTab-preview" extends="chrome://global/content/bindings/button.xml#button-base">
+    <content pack="center">
+      <xul:stack>
+        <xul:vbox class="ctrlTab-preview-inner" align="center" pack="center"
+                  xbl:inherits="width=canvaswidth">
+          <xul:hbox class="tabPreview-canvas" xbl:inherits="style=canvasstyle">
+            <children/>
+          </xul:hbox>
+          <xul:label xbl:inherits="value=label,crop" class="plain"/>
+        </xul:vbox>
+        <xul:hbox class="ctrlTab-favicon-container" xbl:inherits="hidden=noicon">
+          <xul:image class="ctrlTab-favicon" xbl:inherits="src=image"/>
+        </xul:hbox>
+      </xul:stack>
+    </content>
+    <handlers>
+      <handler event="mouseover" action="ctrlTab._mouseOverFocus(this);"/>
+      <handler event="command" action="ctrlTab.pick(this);"/>
+      <handler event="click" button="1" action="ctrlTab.remove(this);"/>
+#ifdef XP_MACOSX
+# Control+click is a right click on OS X
+      <handler event="click" button="2" action="ctrlTab.pick(this);"/>
+#endif
+    </handlers>
+  </binding>
+
+  <binding id="allTabs-preview" extends="chrome://global/content/bindings/button.xml#button-base">
+    <content pack="center" align="center">
+      <xul:stack>
+        <xul:vbox class="allTabs-preview-inner" align="center" pack="center">
+          <xul:hbox class="tabPreview-canvas" xbl:inherits="style=canvasstyle">
+            <children/>
+          </xul:hbox>
+          <xul:hbox align="center">
+            <xul:image xbl:inherits="soundplaying,muted" class="allTabs-endimage"/>
+            <xul:label flex="1" xbl:inherits="value=label,crop" class="allTabs-preview-label plain"/>
+          </xul:hbox>
+        </xul:vbox>
+        <xul:hbox class="allTabs-favicon-container">
+          <xul:image class="allTabs-favicon" xbl:inherits="src=image"/>
+        </xul:hbox>
+      </xul:stack>
+    </content>
+    <handlers>
+      <handler event="command" action="allTabs.pick(this);"/>
+      <handler event="click" button="1" action="gBrowser.removeTab(this._tab);"/>
+
+      <handler event="dragstart"><![CDATA[
+        event.dataTransfer.mozSetDataAt("application/x-moz-node", this._tab, 0);
+      ]]></handler>
+
+      <handler event="dragover"><![CDATA[
+        let tab = event.dataTransfer.mozGetDataAt("application/x-moz-node", 0);
+        if (tab && tab.parentNode == gBrowser.tabContainer)
+          event.preventDefault();
+      ]]></handler>
+
+      <handler event="drop"><![CDATA[
+        let tab = event.dataTransfer.mozGetDataAt("application/x-moz-node", 0);
+        if (tab && tab.parentNode == gBrowser.tabContainer) {
+          let newIndex = Array.indexOf(gBrowser.tabs, this._tab);
+          gBrowser.moveTabTo(tab, newIndex);
+        }
+      ]]></handler>
+    </handlers>
+  </binding>
+</bindings>
diff --git a/webbrowser/base/content/browser-thumbnails.js b/webbrowser/base/content/browser-thumbnails.js
new file mode 100644
index 0000000..079b0ac
--- /dev/null
+++ b/webbrowser/base/content/browser-thumbnails.js
@@ -0,0 +1,203 @@
+#ifdef 0
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+#endif
+
+/**
+ * Keeps thumbnails of open web pages up-to-date.
+ */
+var gBrowserThumbnails = {
+  /**
+   * Pref that controls whether we can store SSL content on disk
+   */
+  PREF_DISK_CACHE_SSL: "browser.cache.disk_cache_ssl",
+
+  _captureDelayMS: 1000,
+
+  /**
+   * Used to keep track of disk_cache_ssl preference
+   */
+  _sslDiskCacheEnabled: null,
+
+  /**
+   * Map of capture() timeouts assigned to their browsers.
+   */
+  _timeouts: null,
+
+  /**
+   * List of tab events we want to listen for.
+   */
+  _tabEvents: ["TabClose", "TabSelect"],
+
+  init: function Thumbnails_init() {
+    // Bug 863512 - Make page thumbnails work in electrolysis
+    if (gMultiProcessBrowser)
+      return;
+
+    try {
+      if (Services.prefs.getBoolPref("browser.pagethumbnails.capturing_disabled"))
+        return;
+    } catch (e) {}
+
+    PageThumbs.addExpirationFilter(this);
+    gBrowser.addTabsProgressListener(this);
+    Services.prefs.addObserver(this.PREF_DISK_CACHE_SSL, this, false);
+
+    this._sslDiskCacheEnabled =
+      Services.prefs.getBoolPref(this.PREF_DISK_CACHE_SSL);
+
+    this._tabEvents.forEach(function (aEvent) {
+      gBrowser.tabContainer.addEventListener(aEvent, this, false);
+    }, this);
+
+    this._timeouts = new WeakMap();
+  },
+
+  uninit: function Thumbnails_uninit() {
+    // Bug 863512 - Make page thumbnails work in electrolysis
+    if (gMultiProcessBrowser)
+      return;
+
+    PageThumbs.removeExpirationFilter(this);
+    gBrowser.removeTabsProgressListener(this);
+    Services.prefs.removeObserver(this.PREF_DISK_CACHE_SSL, this);
+
+    this._tabEvents.forEach(function (aEvent) {
+      gBrowser.tabContainer.removeEventListener(aEvent, this, false);
+    }, this);
+  },
+
+  handleEvent: function Thumbnails_handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "scroll":
+        let browser = aEvent.currentTarget;
+        if (this._timeouts.has(browser))
+          this._delayedCapture(browser);
+        break;
+      case "TabSelect":
+        this._delayedCapture(aEvent.target.linkedBrowser);
+        break;
+      case "TabClose": {
+        this._clearTimeout(aEvent.target.linkedBrowser);
+        break;
+      }
+    }
+  },
+
+  observe: function Thumbnails_observe() {
+    this._sslDiskCacheEnabled =
+      Services.prefs.getBoolPref(this.PREF_DISK_CACHE_SSL);
+  },
+
+  filterForThumbnailExpiration:
+  function Thumbnails_filterForThumbnailExpiration(aCallback) {
+    // Tycho: aCallback([browser.currentURI.spec for (browser of gBrowser.browsers)]);
+    let result = [];
+    for (let browser of gBrowser.browsers) {
+      result.push(browser.currentURI.spec);
+    }
+    aCallback(result);
+  },
+
+  /**
+   * State change progress listener for all tabs.
+   */
+  onStateChange: function Thumbnails_onStateChange(aBrowser, aWebProgress,
+                                                   aRequest, aStateFlags, aStatus) {
+    if (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
+        aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK)
+      this._delayedCapture(aBrowser);
+  },
+
+  _capture: function Thumbnails_capture(aBrowser) {
+    if (this._shouldCapture(aBrowser))
+      PageThumbs.captureAndStore(aBrowser);
+  },
+
+  _delayedCapture: function Thumbnails_delayedCapture(aBrowser) {
+    if (this._timeouts.has(aBrowser))
+      clearTimeout(this._timeouts.get(aBrowser));
+    else
+      aBrowser.addEventListener("scroll", this, true);
+
+    let timeout = setTimeout(function () {
+      this._clearTimeout(aBrowser);
+      this._capture(aBrowser);
+    }.bind(this), this._captureDelayMS);
+
+    this._timeouts.set(aBrowser, timeout);
+  },
+
+  _shouldCapture: function Thumbnails_shouldCapture(aBrowser) {
+    // Capture only if it's the currently selected tab.
+    if (aBrowser != gBrowser.selectedBrowser)
+      return false;
+
+    // Don't capture in per-window private browsing mode.
+    if (PrivateBrowsingUtils.isWindowPrivate(window))
+      return false;
+
+    let doc = aBrowser.contentDocument;
+
+    // FIXME Bug 720575 - Don't capture thumbnails for SVG or XML documents as
+    //       that currently regresses Talos SVG tests.
+    if (doc instanceof XMLDocument)
+      return false;
+
+    // There's no point in taking screenshot of loading pages.
+    if (aBrowser.docShell.busyFlags != Ci.nsIDocShell.BUSY_FLAGS_NONE)
+      return false;
+
+    // Don't take screenshots of about: pages.
+    if (aBrowser.currentURI.schemeIs("about"))
+      return false;
+
+    let channel = aBrowser.docShell.currentDocumentChannel;
+
+    // No valid document channel. We shouldn't take a screenshot.
+    if (!channel)
+      return false;
+
+    // Don't take screenshots of internally redirecting about: pages.
+    // This includes error pages.
+    let uri = channel.originalURI;
+    if (uri.schemeIs("about"))
+      return false;
+
+    let httpChannel;
+    try {
+      httpChannel = channel.QueryInterface(Ci.nsIHttpChannel);
+    } catch (e) { /* Not an HTTP channel. */ }
+
+    if (httpChannel) {
+      // Continue only if we have a 2xx status code.
+      try {
+        if (Math.floor(httpChannel.responseStatus / 100) != 2)
+          return false;
+      } catch (e) {
+        // Can't get response information from the httpChannel
+        // because mResponseHead is not available.
+        return false;
+      }
+
+      // Cache-Control: no-store.
+      if (httpChannel.isNoStoreResponse())
+        return false;
+
+      // Don't capture HTTPS pages unless the user explicitly enabled it.
+      if (uri.schemeIs("https") && !this._sslDiskCacheEnabled)
+        return false;
+    }
+
+    return true;
+  },
+
+  _clearTimeout: function Thumbnails_clearTimeout(aBrowser) {
+    if (this._timeouts.has(aBrowser)) {
+      aBrowser.removeEventListener("scroll", this, false);
+      clearTimeout(this._timeouts.get(aBrowser));
+      this._timeouts.delete(aBrowser);
+    }
+  }
+};
diff --git a/webbrowser/base/content/browser-title.css b/webbrowser/base/content/browser-title.css
new file mode 100644
index 0000000..5f7e775
--- /dev/null
+++ b/webbrowser/base/content/browser-title.css
@@ -0,0 +1,204 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#main-window::after {
+    content: attr(title);
+    line-height: 50px;
+    max-height: 50px;
+    overflow: -moz-hidden-unscrollable;
+    pointer-events: none;
+    position: fixed;
+    word-wrap: break-word;
+    -moz-hyphens: auto;
+    color: CaptionText;
+    font-weight: bold;
+    text-align: left;
+}
+
+#main-window:-moz-window-inactive::after {
+    color: InactiveCaptionText;
+}
+
+/* Win10 doesn't respond to inactive caption, so dim it instead */
+@media (-moz-os-version: windows-win10) {
+    #main-window:-moz-window-inactive::after {
+      opacity: 0.5;
+    }
+}
+
+/* Hide in fullscreen/TiT mode */
+#main-window[inFullscreen="true"]::after,
+#main-window[sizemode="maximized"][tabsintitlebar="true"]::after,
+#main-window:not([chromemargin])::after {
+    opacity: 0 !important;
+}
+
+
+#main-window::after {
+    padding: 0 132px; /* AppMenu button/wincontrols width offset */
+    left: 0;
+    right: 0;
+}
+
+#main-window[privatebrowsingmode=temporary]::after {
+    padding: 0px 132px 0px 152px; /* AppMenu button width offset for PB mode */
+}
+
+#main-window[sizemode="normal"]::after {
+    left: -12px;
+    right: -12px;
+}
+
+/* Windows Classic theme */
+
+@media all and (-moz-windows-classic) {
+
+  #main-window::after {
+    top: -13px;
+    text-shadow: none !important;
+    background-position: 2px 18px;
+  }
+
+}
+
+
+/* Windows Aero (Vista, non-glass 7/8) */
+
+@media all and (-moz-windows-theme: aero) {
+
+  #main-window::after {
+    top: -11px;
+    font-weight: normal;
+    text-shadow: none;
+    background-position: 2px 17px;
+  }
+
+  #main-window[sizemode="maximized"]::after {
+    top: -7px;
+  }
+
+}
+
+
+/* Windows Aero Glass */
+
+@media (-moz-windows-glass) {
+
+  #main-window::after {
+    top: -13px;
+    color: black;
+    text-shadow: rgba(255,255,255,.6) 7px -1px 12px,
+                 rgba(255,255,255,.6) 6px -1px 13px,
+                 rgba(255,255,255,.9) 5px -1px 14px,
+                 rgba(255,255,255,.6) -7px -1px 12px,
+                 rgba(255,255,255,.6) -6px -1px 13px,
+                 rgba(255,255,255,.9) -5px -1px 14px;
+    z-index: -99999;
+    background-position: 2px 18px;
+    font-weight: bold;
+  }
+
+  #main-window[sizemode="maximized"]::after {
+    top: -7px;
+  }
+
+  #main-window:-moz-window-inactive::after {
+    opacity: .9;
+    color: black;
+    text-shadow: rgba(255,255,255,.7) 7px -1px 12px,
+                 rgba(255,255,255,.5) 6px -1px 13px,
+                 rgba(255,255,255,.5) 5px -1px 14px,
+                 rgba(255,255,255,.7) -7px -1px 12px,
+                 rgba(255,255,255,.5) -6px -1px 13px,
+                 rgba(255,255,255,.5) -5px -1px 14px;
+  }
+
+}
+
+
+/* Generic other themes */
+
+@media all and (-moz-windows-theme: generic) {
+
+  #main-window::after {
+    font-family: trebuchet MS;
+    font-size: 13px;
+    text-shadow: 1px 1px rgba(0, 0, 0, .2);
+    top: -9px;
+    background-position: 2px 16px;
+  }
+
+  #main-window:-moz-window-inactive::after {
+    text-shadow: none;
+  }
+
+}
+
+
+/* Compositor style for Win 8/10 */
+
+@media all and (-moz-windows-compositor) {
+  @media not all and (-moz-windows-glass) {
+
+    #main-window::after {
+      background-position: 4px 17px;
+      top: -13px;
+    }
+    
+    @media (-moz-os-version: windows-win8) {
+      #main-window::after {
+        font-size: 15px;
+        text-align: center;
+      }
+      
+      #main-window[darkwindowframe="true"]:not(:-moz-window-inactive):not(:-moz-lwtheme)::after {
+        /* Dark window frame/accent color on Win 8 */
+        color: white;
+      }
+    }
+    
+    @media (-moz-os-version: windows-win10) {    
+      #main-window::after {
+        text-align: left;
+      }
+      
+      @media (-moz-windows-accent-color-applies: 0) {
+        #main-window:not(:-moz-window-inactive):not(:-moz-lwtheme)::after {
+          /* Default Windows 10 styling is white - apply black text styling */
+          color: black;
+        }
+      }
+      
+      @media (-moz-windows-accent-color-applies) {
+        #main-window:not(:-moz-window-inactive):not(:-moz-lwtheme)::after {
+          /* Accent color is applied - use the associated text styling */
+          color: -moz-win-accentcolortext;
+        }
+      }
+    }
+
+    #main-window[sizemode="maximized"]::after {
+      top: -5px;
+    }
+  }
+  
+}
+
+/* Lightweight Themes */
+
+#main-window:-moz-lwtheme::after {
+  color: inherit;
+  text-shadow: inherit;
+}
+
+
+/* Hide for small windows */
+
+@media not all and (min-width: 320px) {
+
+  #main-window::after {
+    opacity: 0 !important;
+  }
+  
+}
\ No newline at end of file
diff --git a/webbrowser/base/content/browser-uacompat.js b/webbrowser/base/content/browser-uacompat.js
new file mode 100644
index 0000000..933aa55
--- /dev/null
+++ b/webbrowser/base/content/browser-uacompat.js
@@ -0,0 +1,45 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var UserAgentCompatibility = {
+  PREF_UA_COMPAT: "general.useragent.compatMode",
+  PREF_UA_COMPAT_GECKO: "general.useragent.compatMode.gecko",
+  PREF_UA_COMPAT_FIREFOX: "general.useragent.compatMode.firefox",
+  
+  init: function() {
+    this.checkPreferences();
+    Services.prefs.addObserver(this.PREF_UA_COMPAT, this, false);
+    Services.prefs.addObserver(this.PREF_UA_COMPAT_GECKO, this, false);
+    Services.prefs.addObserver(this.PREF_UA_COMPAT_FIREFOX, this, false);
+  },
+
+  uninit: function() {
+    Services.prefs.removeObserver(this.PREF_UA_COMPAT, this, false);
+    Services.prefs.removeObserver(this.PREF_UA_COMPAT_GECKO, this, false);
+    Services.prefs.removeObserver(this.PREF_UA_COMPAT_FIREFOX, this, false);
+  },
+
+  observe: function() {
+    this.checkPreferences();
+  },
+  
+  checkPreferences: function() {
+    var compatMode = Services.prefs.getIntPref(this.PREF_UA_COMPAT);
+    
+    switch(compatMode) {
+      case 0:
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_GECKO, false);
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_FIREFOX, false);
+        break;
+      case 1:
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_GECKO, true);
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_FIREFOX, false);
+        break;
+      case 2:
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_GECKO, true);
+        Services.prefs.setBoolPref(this.PREF_UA_COMPAT_FIREFOX, true);
+        break;
+    }
+  }
+};
diff --git a/webbrowser/base/content/browser-webrtcUI.js b/webbrowser/base/content/browser-webrtcUI.js
new file mode 100644
index 0000000..d59134c
--- /dev/null
+++ b/webbrowser/base/content/browser-webrtcUI.js
@@ -0,0 +1,55 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+var WebrtcIndicator = {
+  init: function () {
+    let temp = {};
+    Cu.import("resource:///modules/webrtcUI.jsm", temp);
+    this.UIModule = temp.webrtcUI;
+
+    this.updateButton();
+  },
+
+  get button() {
+    delete this.button;
+    return this.button = document.getElementById("webrtc-status-button");
+  },
+
+  updateButton: function () {
+    this.button.hidden = !this.UIModule.showGlobalIndicator;
+  },
+
+  fillPopup: function (aPopup) {
+    this._menuitemData = new WeakMap;
+    for (let streamData of this.UIModule.activeStreams) {
+      let menuitem = document.createElement("menuitem");
+      menuitem.setAttribute("label", streamData.uri);
+      menuitem.setAttribute("tooltiptext", streamData.uri);
+
+      this._menuitemData.set(menuitem, streamData);
+
+      aPopup.appendChild(menuitem);
+    }
+  },
+
+  clearPopup: function (aPopup) {
+    while (aPopup.lastChild)
+      aPopup.removeChild(aPopup.lastChild);
+  },
+
+  menuCommand: function (aMenuitem) {
+    let streamData = this._menuitemData.get(aMenuitem);
+    if (!streamData)
+      return;
+
+    let browserWindow = streamData.browser.ownerDocument.defaultView;
+    if (streamData.tab) {
+      browserWindow.gBrowser.selectedTab = streamData.tab;
+    } else {
+      streamData.browser.focus();
+    }
+    browserWindow.focus();
+  }
+}
diff --git a/webbrowser/base/content/browser.css b/webbrowser/base/content/browser.css
new file mode 100644
index 0000000..a2970ae
--- /dev/null
+++ b/webbrowser/base/content/browser.css
@@ -0,0 +1,759 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
+@namespace html url("http://www.w3.org/1999/xhtml");
+
+searchbar {
+  -moz-binding: url("chrome://browser/content/search/search.xml#searchbar");
+}
+
+browser[remote="true"] {
+  -moz-binding: url("chrome://global/content/bindings/remote-browser.xml#remote-browser");
+}
+
+tabbrowser {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser");
+}
+
+.tabbrowser-tabs {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-tabs");
+}
+
+#tabbrowser-tabs:not([overflow="true"]) ~ #alltabs-button,
+#tabbrowser-tabs:not([overflow="true"]) + #new-tab-button,
+#tabbrowser-tabs[overflow="true"] > .tabbrowser-arrowscrollbox > .tabs-newtab-button,
+#TabsToolbar[currentset]:not([currentset*="tabbrowser-tabs,new-tab-button"]) > #tabbrowser-tabs > .tabbrowser-arrowscrollbox > .tabs-newtab-button,
+#TabsToolbar[customizing="true"] > #tabbrowser-tabs > .tabbrowser-arrowscrollbox > .tabs-newtab-button {
+  visibility: collapse;
+}
+
+#alltabs-button { /* Pale Moon: Always show this button! (less jumpy UI) */
+  visibility: visible !important;
+} 
+ 
+#tabbrowser-tabs:not([overflow="true"])[using-closing-tabs-spacer] ~ #alltabs-button {
+  visibility: hidden; /* temporary space to keep a tab's close button under the cursor */
+}
+
+.tabbrowser-tab {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-tab");
+}
+
+.tabbrowser-tab:not([pinned]) {
+  -moz-box-flex: 100;
+  max-width: 250px;
+  min-width: 100px;
+  width: 0;
+  transition: min-width 175ms ease-out,
+              max-width 200ms ease-out,
+              opacity 80ms ease-out 20ms /* hide the tab for the first 20ms of the max-width transition */;
+}
+
+.tabbrowser-tab:not([pinned]):not([fadein]) {
+  max-width: 0.1px;
+  min-width: 0.1px;
+  opacity: 0 !important;
+  transition: min-width 175ms ease-out,
+              max-width 200ms ease-out,
+              opacity 80ms ease-out 180ms /* hide the tab for the last 20ms of the max-width transition */;
+}
+
+.tab-throbber:not([fadein]):not([pinned]),
+.tab-label:not([fadein]):not([pinned]),
+.tab-icon-image:not([fadein]):not([pinned]),
+.tab-close-button:not([fadein]):not([pinned]) {
+  display: none;
+}
+
+.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
+  position: fixed !important;
+  display: block; /* position:fixed already does this (bug 579776), but let's be explicit */
+}
+
+.tabbrowser-tabs[movingtab] > .tabbrowser-tab[selected] {
+  position: relative;
+  z-index: 2;
+  pointer-events: none; /* avoid blocking dragover events on scroll buttons */
+}
+
+.tabbrowser-tabs[movingtab] > .tabbrowser-tab[fadein]:not([selected]) {
+  transition: transform 200ms ease-out;
+}
+
+#alltabs-popup {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-alltabs-popup");
+}
+
+toolbar[printpreview="true"] {
+  -moz-binding: url("chrome://global/content/printPreviewBindings.xml#printpreviewtoolbar");
+}
+
+#toolbar-menubar {
+  -moz-box-ordinal-group: 5;
+}
+
+#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) {
+  -moz-box-ordinal-group: 50;
+}
+
+#TabsToolbar {
+  -moz-box-ordinal-group: 100;
+}
+
+#TabsToolbar[tabsontop="true"] {
+  -moz-box-ordinal-group: 10;
+}
+
+%ifdef CAN_DRAW_IN_TITLEBAR
+#main-window[inFullscreen] > #titlebar,
+#main-window[inFullscreen] .titlebar-placeholder,
+#main-window:not([tabsintitlebar]) .titlebar-placeholder {
+  display: none;
+}
+
+#titlebar {
+  -moz-binding: url("chrome://global/content/bindings/general.xml#windowdragbox");
+  -moz-window-dragging: drag;
+}
+
+%ifdef XP_WIN
+#main-window[tabsontop="true"] #TabsToolbar,
+#main-window[tabsontop="true"] #toolbar-menubar,
+#main-window[tabsontop="true"] #navigator-toolbox > toolbar:-moz-lwtheme {
+  -moz-window-dragging: drag;
+}
+%endif
+
+#titlebar-spacer {
+  pointer-events: none;
+}
+
+#main-window[tabsintitlebar] #appmenu-button-container,
+#main-window[tabsintitlebar] #titlebar-buttonbox {
+  position: relative;
+}
+%endif
+
+#main-window[inDOMFullscreen] #sidebar-box,
+#main-window[inDOMFullscreen] #sidebar-splitter {
+  visibility: collapse;
+}
+
+.bookmarks-toolbar-customize,
+#wrapper-personal-bookmarks > #personal-bookmarks > #PlacesToolbar > hbox > #PlacesToolbarItems {
+  display: none;
+}
+
+#wrapper-personal-bookmarks[place="toolbar"] > #personal-bookmarks > #PlacesToolbar > .bookmarks-toolbar-customize {
+  display: -moz-box;
+}
+
+#main-window[disablechrome] #navigator-toolbox[tabsontop="true"] > toolbar:not(#toolbar-menubar):not(#TabsToolbar) {
+  visibility: collapse;
+}
+
+#wrapper-urlbar-container #urlbar-container > #urlbar > toolbarbutton,
+#urlbar-container:not([combined]) > #urlbar > toolbarbutton,
+#urlbar-container[combined] + #reload-button + #stop-button,
+#urlbar-container[combined] + #reload-button,
+toolbar:not([mode="icons"]) > #urlbar-container > #urlbar > toolbarbutton,
+toolbar[mode="icons"] > #urlbar-container > #urlbar > #urlbar-reload-button:not([displaystop]) + #urlbar-stop-button,
+toolbar[mode="icons"] > #urlbar-container > #urlbar > #urlbar-reload-button[displaystop],
+toolbar[mode="icons"] > #reload-button:not([displaystop]) + #stop-button,
+toolbar[mode="icons"] > #reload-button[displaystop] {
+  visibility: collapse;
+}
+
+#feed-button > .toolbarbutton-menu-dropmarker {
+  display: none;
+}
+
+#feed-menu > .feed-menuitem:-moz-locale-dir(rtl) {
+  direction: rtl;
+}
+
+#main-window:-moz-lwtheme {
+  background-repeat: no-repeat;
+  background-position: top right;
+}
+
+%ifdef XP_MACOSX
+#main-window[inFullscreen="true"] {
+  padding-top: 0; /* override drawintitlebar="true" */
+}
+%endif
+
+#browser-bottombox[lwthemefooter="true"] {
+  background-repeat: no-repeat;
+  background-position: bottom left;
+}
+
+splitmenu {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#splitmenu");
+}
+
+.splitmenu-menuitem {
+  -moz-binding: url("chrome://global/content/bindings/menu.xml#menuitem");
+  list-style-image: inherit;
+  -moz-image-region: inherit;
+}
+
+.splitmenu-menuitem[iconic="true"] {
+  -moz-binding: url("chrome://global/content/bindings/menu.xml#menuitem-iconic");
+}
+
+.splitmenu-menu > .menu-text,
+:-moz-any(.splitmenu-menu, .splitmenu-menuitem) > .menu-accel-container,
+#appmenu-editmenu > .menu-text,
+#appmenu-editmenu > .menu-accel-container {
+  display: none;
+}
+
+.menuitem-tooltip {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#menuitem-tooltip");
+}
+
+.menuitem-iconic-tooltip,
+.menuitem-tooltip[type="checkbox"],
+.menuitem-tooltip[type="radio"] {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#menuitem-iconic-tooltip");
+}
+
+%ifdef MENUBAR_CAN_AUTOHIDE
+%ifndef CAN_DRAW_IN_TITLEBAR
+#appmenu-toolbar-button > .toolbarbutton-text {
+  display: -moz-box;
+}
+%endif
+
+#appmenu_offlineModeRecovery:not([checked=true]) {
+  display: none;
+}
+%endif
+
+/* Hide menu elements intended for keyboard access support */
+#main-menubar[openedwithkey=false] .show-only-for-keyboard {
+  display: none;
+}
+
+/* ::::: location bar ::::: */
+#urlbar {
+  -moz-binding: url(chrome://browser/content/urlbarBindings.xml#urlbar);
+}
+
+.ac-url-text:-moz-locale-dir(rtl),
+.ac-title:-moz-locale-dir(rtl) > description {
+  direction: ltr !important;
+}
+
+/* For results that are actions, their description text is shown instead of
+   the URL - this needs to follow the locale's direction, unlike URLs. */
+panel:not([noactions]) > richlistbox > richlistitem[type~="action"]:-moz-locale-dir(rtl) > .ac-url-box {
+  direction: rtl;
+}
+
+panel[noactions] > richlistbox > richlistitem[type~="action"] > .ac-url-box > .ac-url > .ac-action-text,
+panel[noactions] > richlistbox > richlistitem[type~="action"] > .ac-url-box > .ac-action-icon {
+  visibility: collapse;
+}
+
+panel[noactions] > richlistbox > richlistitem[type~="action"] > .ac-url-box > .ac-url > .ac-url-text {
+  visibility: visible;
+}
+
+#urlbar:not([actiontype]) > #urlbar-display-box {
+  display: none;
+}
+
+#wrapper-urlbar-container > #urlbar-container > #urlbar {
+  -moz-user-input: disabled;
+  cursor: -moz-grab;
+}
+
+#PopupAutoComplete {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#browser-autocomplete-result-popup");
+}
+
+#PopupAutoCompleteRichResult {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#urlbar-rich-result-popup");
+}
+
+#DateTimePickerPanel[active="true"] {
+  -moz-binding: url("chrome://global/content/bindings/datetimepopup.xml#datetime-popup");
+}
+
+/* Pale Moon: Address bar: Feeds */
+#ub-feed-button > .button-box > .box-inherit > .button-text,
+#ub-feed-button > .button-box > .button-menu-dropmarker {
+  display: none;
+}
+
+#ub-feed-menu > .feed-menuitem:-moz-locale-dir(rtl) {
+  direction: rtl;
+}
+
+
+#urlbar-container[combined] > #urlbar > #urlbar-icons > #go-button,
+#urlbar[pageproxystate="invalid"] > #urlbar-icons > .urlbar-icon:not(#go-button),
+#urlbar[pageproxystate="valid"] > #urlbar-icons > #go-button,
+#urlbar[pageproxystate="invalid"][focused="true"] > #urlbar-go-button ~ toolbarbutton,
+#urlbar[pageproxystate="valid"] > #urlbar-go-button,
+#urlbar:not([focused="true"]) > #urlbar-go-button {
+  visibility: collapse;
+}
+
+#urlbar[pageproxystate="invalid"] > #identity-box > #identity-icon-labels {
+  visibility: collapse;
+}
+
+#urlbar[pageproxystate="invalid"] > #identity-box {
+  pointer-events: none;
+}
+
+#identity-icon-labels {
+  max-width: 18em;
+}
+
+#identity-icon-country-label {
+  direction: ltr;
+}
+
+#identity-box.verifiedIdentity > #identity-icon-labels > #identity-icon-label {
+  -moz-margin-end: 0.25em !important;
+}
+
+#wrapper-search-container > #search-container > #searchbar > .searchbar-textbox > .autocomplete-textbox-container > .textbox-input-box > html|*.textbox-input {
+  visibility: hidden;
+}
+
+/* Private Autocomplete */
+textbox[type="private-autocomplete"] {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#autocomplete");
+}
+
+panel[type="private-autocomplete"] {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#autocomplete-result-popup");
+}
+
+panel[type="private-autocomplete-richlistbox"] {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-rich-result-popup");
+}
+
+.private-autocomplete-tree {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-tree");
+  -moz-user-focus: ignore;
+}
+
+.private-autocomplete-treebody {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-treebody");
+}
+
+.private-autocomplete-richlistbox {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-richlistbox");
+  -moz-user-focus: ignore;
+}
+
+.private-autocomplete-richlistbox > scrollbox {
+  overflow-x: hidden !important;
+}
+
+.private-autocomplete-richlistitem {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-richlistitem");
+  -moz-box-orient: vertical;
+  overflow: -moz-hidden-unscrollable;
+}
+
+.private-autocomplete-treerows {
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-autocomplete-treerows");
+}
+
+.private-autocomplete-history-dropmarker {
+  display: none;
+}
+
+.private-autocomplete-history-dropmarker[enablehistory="true"] {
+  display: -moz-box;
+  -moz-binding: url("chrome://browser/content/autocomplete.xml#private-history-dropmarker");
+}
+
+.ac-ellipsis-after {
+  visibility: hidden;
+}
+
+.ac-url-text[type~="action"],
+.ac-action-text:not([type~="action"]) {
+  visibility: collapse;
+}
+
+
+/* ::::: Unified Back-/Forward Button ::::: */
+#back-button > .toolbarbutton-menu-dropmarker,
+#forward-button > .toolbarbutton-menu-dropmarker {
+  display: none;
+}
+.unified-nav-current {
+  font-weight: bold;
+}
+
+toolbarbutton.bookmark-item {
+  max-width: 13em;
+}
+
+%ifdef MENUBAR_CAN_AUTOHIDE
+#toolbar-menubar:not([autohide="true"]) ~ toolbar > #bookmarks-menu-button,
+#toolbar-menubar:not([autohide="true"]) > #bookmarks-menu-button,
+#toolbar-menubar:not([autohide="true"]) ~ toolbar > #history-menu-button,
+#toolbar-menubar:not([autohide="true"]) > #history-menu-button {
+  display: none;
+}
+%endif
+
+#editBMPanel_tagsSelector {
+  /* override default listbox width from xul.css */
+  width: auto;
+}
+
+menupopup[emptyplacesresult="true"] > .hide-if-empty-places-result {
+  display: none;
+}
+
+menuitem.spell-suggestion {
+  font-weight: bold;
+}
+
+#sidebar-header > .tabs-closebutton {
+  -moz-user-focus: normal;
+}
+
+/* apply Fitts' law to the notification bar's close button */
+window[sizemode="maximized"] #content .notification-inner {
+  border-right: 0px !important;
+}
+
+/* Hide extension toolbars that neglected to set the proper class */
+window[chromehidden~="location"][chromehidden~="toolbar"] toolbar:not(.chromeclass-menubar),
+window[chromehidden~="toolbar"] toolbar:not(.toolbar-primary):not(#nav-bar):not(#TabsToolbar):not(#print-preview-toolbar):not(.chromeclass-menubar) {
+  display: none;
+}
+
+#navigator-toolbox ,
+#status-bar ,
+#mainPopupSet {
+  min-width: 1px;
+}
+
+%ifdef MOZ_SERVICES_SYNC
+/* Sync notification UI */
+#sync-notifications {
+  -moz-binding: url("chrome://browser/content/sync/notification.xml#notificationbox");
+  overflow-y: visible !important;
+}
+
+#sync-notifications notification {
+  -moz-binding: url("chrome://browser/content/sync/notification.xml#notification");
+}
+%endif
+
+/* History Swipe Animation */
+
+#historySwipeAnimationContainer {
+  overflow: hidden;
+}
+
+#historySwipeAnimationPreviousPage,
+#historySwipeAnimationCurrentPage,
+#historySwipeAnimationNextPage {
+  background: none top left no-repeat white;
+}
+
+#historySwipeAnimationPreviousPage {
+  background-image: -moz-element(#historySwipeAnimationPreviousPageSnapshot);
+}
+
+#historySwipeAnimationCurrentPage {
+  background-image: -moz-element(#historySwipeAnimationCurrentPageSnapshot);
+}
+
+#historySwipeAnimationNextPage {
+  background-image: -moz-element(#historySwipeAnimationNextPageSnapshot);
+}
+
+/* Identity UI */
+#identity-popup-content-box.unknownIdentity > #identity-popup-connectedToLabel ,
+#identity-popup-content-box.unknownIdentity > #identity-popup-runByLabel ,
+#identity-popup-content-box.unknownIdentity > #identity-popup-content-host ,
+#identity-popup-content-box.unknownIdentity > #identity-popup-content-owner ,
+#identity-popup-content-box.verifiedIdentity > #identity-popup-connectedToLabel2 ,
+#identity-popup-content-box.verifiedDomain > #identity-popup-connectedToLabel2 {
+  display: none;
+}
+
+/*  Full Screen UI */
+
+#fullscr-toggler {
+  height: 1px;
+  background: black;
+}
+
+#full-screen-warning-container {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 2147483647 !important;
+  pointer-events: none;
+}
+
+#full-screen-warning-container[fade-warning-out] {
+  transition-property: opacity !important;
+  transition-duration: 500ms !important;
+  opacity: 0.0;
+}
+
+#full-screen-warning-message {
+  /* We must specify a max-width, otherwise word-wrap:break-word doesn't
+     work in descendant <description> and <label> elements. Bug 630864. */
+  max-width: 800px;
+}
+
+#full-screen-domain-text {
+  word-wrap: break-word;
+  /* We must specify a min-width, otherwise word-wrap:break-word doesn't work. Bug 630864. */
+  min-width: 1px;
+}
+
+#nav-bar[mode="text"] > #window-controls > toolbarbutton > .toolbarbutton-icon {
+  display: -moz-box;
+}
+
+#nav-bar[mode="text"] > #window-controls > toolbarbutton > .toolbarbutton-text {
+  display: none;
+}
+
+/* ::::: Keyboard UI Panel ::::: */
+.KUI-panel-closebutton {
+  -moz-binding: url("chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton-image");
+}
+
+:-moz-any(.ctrlTab-preview, .allTabs-preview) > html|img,
+:-moz-any(.ctrlTab-preview, .allTabs-preview) > html|canvas {
+  min-width: inherit;
+  max-width: inherit;
+  min-height: inherit;
+  max-height: inherit;
+}
+
+.ctrlTab-favicon-container,
+.allTabs-favicon-container {
+  -moz-box-align: start;
+%ifdef XP_MACOSX
+  -moz-box-pack: end;
+%else
+  -moz-box-pack: start;
+%endif
+}
+
+.ctrlTab-favicon,
+.allTabs-favicon {
+  width: 16px;
+  height: 16px;
+}
+
+/* ::::: Ctrl-Tab Panel ::::: */
+.ctrlTab-preview {
+  -moz-binding: url("chrome://browser/content/browser-tabPreviews.xml#ctrlTab-preview");
+}
+
+/* ::::: All Tabs Panel ::::: */
+.allTabs-preview {
+  -moz-binding: url("chrome://browser/content/browser-tabPreviews.xml#allTabs-preview");
+}
+
+#allTabs-tab-close-button {
+  -moz-binding: url("chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton-image");
+  margin: 0;
+}
+
+
+/* notification anchors should only be visible when their associated
+   notifications are */
+.notification-anchor-icon {
+  -moz-user-focus: normal;
+}
+
+.notification-anchor-icon:not([showing]) {
+  display: none;
+}
+
+/* This was added with the identity toolkit, does it have any other purpose? */
+#notification-popup .text-link.custom-link {
+  -moz-binding: url("chrome://global/content/bindings/text.xml#text-label");
+  text-decoration: none;
+}
+
+#invalid-form-popup > description {
+  max-width: 280px;
+}
+
+.popup-anchor {
+  /* should occupy space but not be visible */
+  opacity: 0;
+  pointer-events: none;
+  -moz-stack-sizing: ignore;
+}
+
+#addon-progress-notification {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#addon-progress-notification");
+}
+
+#click-to-play-plugins-notification {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#click-to-play-plugins-notification");
+}
+
+.plugin-popupnotification-centeritem {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#plugin-popupnotification-center-item");
+}
+
+/* override hidden="true" for the status bar compatibility shim
+   in case it was persisted for the real status bar */
+#status-bar {
+  display: -moz-box;
+}
+
+/* Remove the resizer from the statusbar compatibility shim */
+#status-bar[hideresizer] > .statusbar-resizerpanel {
+  display: none;
+}
+
+browser[tabmodalPromptShowing] {
+  -moz-user-focus: none !important;
+}
+
+/* Status panel */
+
+statuspanel {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#statuspanel");
+  position: fixed;
+  margin-top: -3em;
+  left: 0;
+  max-width: calc(100% - 5px);
+  pointer-events: none;
+}
+
+statuspanel:-moz-locale-dir(ltr)[mirror],
+statuspanel:-moz-locale-dir(rtl):not([mirror]) {
+  left: auto;
+  right: 0;
+}
+
+statuspanel[sizelimit] {
+  max-width: 50%;
+}
+
+statuspanel[type=status] {
+  min-width: 23em;
+}
+
+@media all and (max-width: 800px) {
+  statuspanel[type=status] {
+    min-width: 33%;
+  }
+}
+
+statuspanel[type=overLink] {
+  transition: opacity 120ms ease-out;
+  direction: ltr;
+}
+
+statuspanel[inactive] {
+  transition: none;
+  opacity: 0;
+}
+
+statuspanel[inactive][previoustype=overLink] {
+  transition: opacity 200ms ease-out;
+}
+
+.statuspanel-inner {
+  height: 3em;
+  width: 100%;
+  -moz-box-align: end;
+}
+
+/* highlighter */
+%include highlighter.css
+
+/* gcli */
+
+html|*#gcli-tooltip-frame,
+html|*#gcli-output-frame,
+#gcli-output,
+#gcli-tooltip {
+  overflow-x: hidden;
+}
+
+.gclitoolbar-input-node,
+.gclitoolbar-complete-node {
+  direction: ltr;
+}
+
+#developer-toolbar-toolbox-button[error-count] > .toolbarbutton-icon {
+  display: none;
+}
+
+#developer-toolbar-toolbox-button[error-count]:before {
+  content: attr(error-count);
+  display: -moz-box;
+  -moz-box-pack: center;
+}
+
+/* Responsive Mode */
+
+.browserContainer[responsivemode] {
+  overflow: auto;
+}
+
+.devtools-responsiveui-toolbar:-moz-locale-dir(rtl) {
+  -moz-box-pack: end;
+}
+
+.browserStack[responsivemode] {
+  transition-duration: 200ms;
+  transition-timing-function: linear;
+}
+
+.browserStack[responsivemode] {
+  transition-property: min-width, max-width, min-height, max-height;
+}
+
+.browserStack[responsivemode][notransition] {
+  transition: none;
+}
+
+.toolbarbutton-badge[badge]:not([badge=""])::after {
+  content: attr(badge);
+}
+
+toolbarbutton[type="badged"] {
+  -moz-binding: url("chrome://browser/content/urlbarBindings.xml#toolbarbutton-badged");
+}
+
+/* Strict icon size for PMkit 'ui/button' */
+toolbarbutton[pmkit-button="true"] > .toolbarbutton-badge-stack > .toolbarbutton-icon {
+  width: 16px;
+  height: 16px;
+}
+
+/* Remove white bar at the bottom of the screen when watching HTML5 video in fullscreen */
+#main-window[inFullscreen] #global-notificationbox,
+#main-window[inFullscreen] #high-priority-global-notificationbox {
+  visibility: collapse;
+}
+
+#navigator-toolbox[fullscreenShouldAnimate] {
+  transition: 0.7s margin-top ease-out;
+  transition-delay: 0.8s;
+}
diff --git a/webbrowser/base/content/browser.js b/webbrowser/base/content/browser.js
new file mode 100644
index 0000000..7615bc9
--- /dev/null
+++ b/webbrowser/base/content/browser.js
@@ -0,0 +1,7440 @@
+# -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource:///modules/RecentWindow.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+                                  "resource://gre/modules/Task.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "CharsetMenu",
+                                  "resource:///modules/CharsetMenu.jsm");
+
+const nsIWebNavigation = Ci.nsIWebNavigation;
+const gToolbarInfoSeparators = ["|", "-"];
+
+var gLastBrowserCharset = null;
+var gPrevCharset = null;
+var gProxyFavIcon = null;
+var gLastValidURLStr = "";
+var gInPrintPreviewMode = false;
+var gContextMenu = null; // nsContextMenu instance
+var gMultiProcessBrowser = false;
+
+#ifndef XP_MACOSX
+var gEditUIVisible = true;
+#endif
+
+[
+  ["gBrowser",            "content"],
+  ["gNavToolbox",         "navigator-toolbox"],
+  ["gURLBar",             "urlbar"],
+  ["gNavigatorBundle",    "bundle_browser"]
+].forEach(function (elementGlobal) {
+  var [name, id] = elementGlobal;
+  window.__defineGetter__(name, function () {
+    var element = document.getElementById(id);
+    if (!element)
+      return null;
+    delete window[name];
+    return window[name] = element;
+  });
+  window.__defineSetter__(name, function (val) {
+    delete window[name];
+    return window[name] = val;
+  });
+});
+
+// Smart getter for the findbar.  If you don't wish to force the creation of
+// the findbar, check gFindBarInitialized first.
+var gFindBarInitialized = false;
+XPCOMUtils.defineLazyGetter(window, "gFindBar", function() {
+  let XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+  let findbar = document.createElementNS(XULNS, "findbar");
+  findbar.id = "FindToolbar";
+
+  let browserBottomBox = document.getElementById("browser-bottombox");
+  browserBottomBox.insertBefore(findbar, browserBottomBox.firstChild);
+
+  // Force a style flush to ensure that our binding is attached.
+  findbar.clientTop;
+  findbar.browser = gBrowser.mCurrentBrowser;
+  window.gFindBarInitialized = true;
+  return findbar;
+});
+
+XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
+  "resource://gre/modules/BrowserUtils.jsm");
+
+XPCOMUtils.defineLazyGetter(this, "gPrefService", function() {
+  return Services.prefs;
+});
+
+this.__defineGetter__("AddonManager", function() {
+  let tmp = {};
+  Cu.import("resource://gre/modules/AddonManager.jsm", tmp);
+  return this.AddonManager = tmp.AddonManager;
+});
+this.__defineSetter__("AddonManager", function (val) {
+  delete this.AddonManager;
+  return this.AddonManager = val;
+});
+
+XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
+  "resource://gre/modules/PluralForm.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "AboutHomeUtils",
+  "resource:///modules/AboutHomeUtils.jsm");
+
+#ifdef MOZ_SERVICES_SYNC
+XPCOMUtils.defineLazyModuleGetter(this, "Weave",
+  "resource://services-sync/main.js");
+#endif
+
+XPCOMUtils.defineLazyGetter(this, "PopupNotifications", function () {
+  let tmp = {};
+  Cu.import("resource:///modules/PopupNotifications.jsm", tmp);
+  try {
+    return new tmp.PopupNotifications(gBrowser,
+                                      document.getElementById("notification-popup"),
+                                      document.getElementById("notification-popup-box"));
+  } catch (ex) {
+    Cu.reportError(ex);
+    return null;
+  }
+});
+
+XPCOMUtils.defineLazyModuleGetter(this, "PageThumbs",
+  "resource://gre/modules/PageThumbs.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "gBrowserNewTabPreloader",
+  "resource:///modules/BrowserNewTabPreloader.jsm", "BrowserNewTabPreloader");
+
+XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
+  "resource://gre/modules/PrivateBrowsingUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "FormValidationHandler",
+  "resource:///modules/FormValidationHandler.jsm");
+
+var gInitialPages = [
+  "about:blank",
+  "about:newtab",
+  "about:home",
+  "about:privatebrowsing",
+  "about:sessionrestore",
+  "about:logopage"
+];
+
+#include browser-addons.js
+#include browser-feeds.js
+#include browser-fullScreen.js
+#include browser-fullZoom.js
+#include browser-places.js
+#include browser-plugins.js
+#include browser-tabPreviews.js
+#include browser-thumbnails.js
+#include browser-uacompat.js
+
+#ifdef MOZ_WEBRTC
+#include browser-webrtcUI.js
+#endif
+
+#include browser-gestureSupport.js
+
+#ifdef MOZ_SERVICES_SYNC
+#include browser-syncui.js
+#endif
+
+XPCOMUtils.defineLazyGetter(this, "Win7Features", function () {
+#ifdef XP_WIN
+  const WINTASKBAR_CONTRACTID = "@mozilla.org/windows-taskbar;1";
+  if (WINTASKBAR_CONTRACTID in Cc &&
+      Cc[WINTASKBAR_CONTRACTID].getService(Ci.nsIWinTaskbar).available) {
+    let AeroPeek = Cu.import("resource:///modules/WindowsPreviewPerTab.jsm", {}).AeroPeek;
+    return {
+      onOpenWindow: function () {
+        AeroPeek.onOpenWindow(window);
+      },
+      onCloseWindow: function () {
+        AeroPeek.onCloseWindow(window);
+      }
+    };
+  }
+#endif
+  return null;
+});
+
+XPCOMUtils.defineLazyGetter(this, "PageMenu", function() {
+  let tmp = {};
+  Cu.import("resource:///modules/PageMenu.jsm", tmp);
+  return new tmp.PageMenu();
+});
+
+/**
+* We can avoid adding multiple load event listeners and save some time by adding
+* one listener that calls all real handlers.
+*/
+function pageShowEventHandlers(persisted) {
+  charsetLoadListener();
+  XULBrowserWindow.asyncUpdateUI();
+
+  // The PluginClickToPlay events are not fired when navigating using the
+  // BF cache. |persisted| is true when the page is loaded from the
+  // BF cache, so this code reshows the notification if necessary.
+  if (persisted)
+    gPluginHandler.reshowClickToPlayNotification();
+}
+
+function UpdateBackForwardCommands(aWebNavigation) {
+  var backBroadcaster = document.getElementById("Browser:Back");
+  var forwardBroadcaster = document.getElementById("Browser:Forward");
+
+  // Avoid setting attributes on broadcasters if the value hasn't changed!
+  // Remember, guys, setting attributes on elements is expensive!  They
+  // get inherited into anonymous content, broadcast to other widgets, etc.!
+  // Don't do it if the value hasn't changed! - dwh
+
+  var backDisabled = backBroadcaster.hasAttribute("disabled");
+  var forwardDisabled = forwardBroadcaster.hasAttribute("disabled");
+  if (backDisabled == aWebNavigation.canGoBack) {
+    if (backDisabled)
+      backBroadcaster.removeAttribute("disabled");
+    else
+      backBroadcaster.setAttribute("disabled", true);
+  }
+
+  if (forwardDisabled == aWebNavigation.canGoForward) {
+    if (forwardDisabled)
+      forwardBroadcaster.removeAttribute("disabled");
+    else
+      forwardBroadcaster.setAttribute("disabled", true);
+  }
+}
+
+/**
+ * Click-and-Hold implementation for the Back and Forward buttons
+ * XXXmano: should this live in toolbarbutton.xml?
+ */
+function SetClickAndHoldHandlers() {
+  var timer;
+
+  function openMenu(aButton) {
+    cancelHold(aButton);
+    aButton.firstChild.hidden = false;
+    aButton.open = true;
+  }
+
+  function mousedownHandler(aEvent) {
+    if (aEvent.button != 0 ||
+        aEvent.currentTarget.open ||
+        aEvent.currentTarget.disabled)
+      return;
+
+    // Prevent the menupopup from opening immediately
+    aEvent.currentTarget.firstChild.hidden = true;
+
+    aEvent.currentTarget.addEventListener("mouseout", mouseoutHandler, false);
+    aEvent.currentTarget.addEventListener("mouseup", mouseupHandler, false);
+    timer = setTimeout(openMenu, 500, aEvent.currentTarget);
+  }
+
+  function mouseoutHandler(aEvent) {
+    let buttonRect = aEvent.currentTarget.getBoundingClientRect();
+    if (aEvent.clientX >= buttonRect.left &&
+        aEvent.clientX <= buttonRect.right &&
+        aEvent.clientY >= buttonRect.bottom)
+      openMenu(aEvent.currentTarget);
+    else
+      cancelHold(aEvent.currentTarget);
+  }
+
+  function mouseupHandler(aEvent) {
+    cancelHold(aEvent.currentTarget);
+  }
+
+  function cancelHold(aButton) {
+    clearTimeout(timer);
+    aButton.removeEventListener("mouseout", mouseoutHandler, false);
+    aButton.removeEventListener("mouseup", mouseupHandler, false);
+  }
+
+  function clickHandler(aEvent) {
+    if (aEvent.button == 0 &&
+        aEvent.target == aEvent.currentTarget &&
+        !aEvent.currentTarget.open &&
+        !aEvent.currentTarget.disabled) {
+      let cmdEvent = document.createEvent("xulcommandevent");
+      cmdEvent.initCommandEvent("command", true, true, window, 0,
+                                aEvent.ctrlKey, aEvent.altKey, aEvent.shiftKey,
+                                aEvent.metaKey, null);
+      aEvent.currentTarget.dispatchEvent(cmdEvent);
+    }
+  }
+
+  function _addClickAndHoldListenersOnElement(aElm) {
+    aElm.addEventListener("mousedown", mousedownHandler, true);
+    aElm.addEventListener("click", clickHandler, true);
+  }
+
+  // Bug 414797: Clone unified-back-forward-button's context menu into both the
+  // back and the forward buttons.
+  var unifiedButton = document.getElementById("unified-back-forward-button");
+  if (unifiedButton && !unifiedButton._clickHandlersAttached) {
+    unifiedButton._clickHandlersAttached = true;
+
+    let popup = document.getElementById("backForwardMenu").cloneNode(true);
+    popup.removeAttribute("id");
+    // Prevent the context attribute on unified-back-forward-button from being
+    // inherited.
+    popup.setAttribute("context", "");
+
+    let backButton = document.getElementById("back-button");
+    backButton.setAttribute("type", "menu");
+    backButton.appendChild(popup);
+    _addClickAndHoldListenersOnElement(backButton);
+
+    let forwardButton = document.getElementById("forward-button");
+    popup = popup.cloneNode(true);
+    forwardButton.setAttribute("type", "menu");
+    forwardButton.appendChild(popup);
+    _addClickAndHoldListenersOnElement(forwardButton);
+  }
+}
+
+const gSessionHistoryObserver = {
+  observe: function(subject, topic, data)
+  {
+    if (topic != "browser:purge-session-history")
+      return;
+
+    var backCommand = document.getElementById("Browser:Back");
+    backCommand.setAttribute("disabled", "true");
+    var fwdCommand = document.getElementById("Browser:Forward");
+    fwdCommand.setAttribute("disabled", "true");
+
+    // Hide session restore button on about:home
+    window.messageManager.broadcastAsyncMessage("Browser:HideSessionRestoreButton");
+
+    if (gURLBar) {
+      // Clear undo history of the URL bar
+      gURLBar.editor.transactionManager.clear()
+    }
+  }
+};
+
+var gFindBarSettings = {
+  messageName: "Findbar:Keypress",
+  prefName: "accessibility.typeaheadfind",
+  findAsYouType: null,
+
+  init: function() {
+    window.messageManager.addMessageListener(this.messageName, this);
+
+    gPrefService.addObserver(this.prefName, this, false);
+    this.writeFindAsYouType();
+  },
+
+  uninit: function() {
+    window.messageManager.removeMessageListener(this.messageName, this);
+
+    try {
+      gPrefService.removeObserver(this.prefName, this);
+    } catch (ex) {
+      Cu.reportError(ex);
+    }
+  },
+
+  observe: function(aSubject, aTopic, aData) {
+    if (aTopic != "nsPref:changed") {
+      return;
+    }
+
+    this.writeFindAsYouType();
+  },
+
+  writeFindAsYouType: function() {
+    this.findAsYouType = gPrefService.getBoolPref(this.prefName);
+  },
+
+  receiveMessage: function(aMessage) {
+    switch (aMessage.name) {
+      case this.messageName:
+        // If the find bar for chrome window's context is not yet alive,
+        // only initialize it if there's a possibility FindAsYouType
+        // will be used.
+        // There's no point in doing it for most random keypresses.
+        if (!gFindBarInitialized && aMessage.data.shouldFastFind) {
+          let shouldFastFind = this.findAsYouType;
+          if (!shouldFastFind) {
+            // Please keep in sync with toolkit/content/widgets/findbar.xml
+            const FAYT_LINKS_KEY = "'";
+            const FAYT_TEXT_KEY = "/";
+            let charCode = aMessage.data.fakeEvent.charCode;
+            let key = charCode ? String.fromCharCode(charCode) : null;
+            shouldFastFind = key == FAYT_LINKS_KEY || key == FAYT_TEXT_KEY;
+          }
+          if (shouldFastFind) {
+            // Make sure we return the result.
+            return gFindBar.receiveMessage(aMessage);
+          }
+        }
+        break;
+    }
+  }
+};
+
+var gURLBarSettings = {
+  prefSuggest: "browser.urlbar.suggest.",
+  /*
+  For searching in the source code:
+    browser.urlbar.suggest.bookmark
+    browser.urlbar.suggest.history
+    browser.urlbar.suggest.openpage
+  */
+  prefSuggests: [
+    "bookmark",
+    "history",
+    "openpage"
+  ],
+  prefKeyword: "keyword.enabled",
+
+  observe: function(aSubject, aTopic, aData) {
+    if (aTopic != "nsPref:changed")
+      return;
+
+    this.writePlaceholder();
+  },
+
+  writePlaceholder: function() {
+    if (!gURLBar) {
+      return;
+    }
+
+    let attribute = "placeholder";
+    let prefs = this.prefSuggests.map(pref => {
+      return this.prefSuggest + pref;
+    });
+    prefs.push(this.prefKeyword);
+    let placeholderDefault = prefs.some(pref => {
+      return gPrefService.getBoolPref(pref);
+    });
+
+    if (placeholderDefault) {
+      gURLBar.setAttribute(
+          attribute, gNavigatorBundle.getString("urlbar.placeholder"));
+    } else {
+      gURLBar.setAttribute(
+          attribute, gNavigatorBundle.getString("urlbar.placeholderURLOnly"));
+    }
+  }
+};
+
+/**
+ * Given a starting docshell and a URI to look up, find the docshell the URI
+ * is loaded in.
+ * @param   aDocument
+ *          A document to find instead of using just a URI - this is more specific.
+ * @param   aDocShell
+ *          The doc shell to start at
+ * @param   aSoughtURI
+ *          The URI that we're looking for
+ * @returns The doc shell that the sought URI is loaded in. Can be in
+ *          subframes.
+ */
+function findChildShell(aDocument, aDocShell, aSoughtURI) {
+  aDocShell.QueryInterface(Components.interfaces.nsIWebNavigation);
+  aDocShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor);
+  var doc = aDocShell.getInterface(Components.interfaces.nsIDOMDocument);
+  if ((aDocument && doc == aDocument) ||
+      (aSoughtURI && aSoughtURI.spec == aDocShell.currentURI.spec))
+    return aDocShell;
+
+  var node = aDocShell.QueryInterface(Components.interfaces.nsIDocShellTreeItem);
+  for (var i = 0; i < node.childCount; ++i) {
+    var docShell = node.getChildAt(i);
+    docShell = findChildShell(aDocument, docShell, aSoughtURI);
+    if (docShell)
+      return docShell;
+  }
+  return null;
+}
+
+var gPopupBlockerObserver = {
+  _reportButton: null,
+
+  onReportButtonClick: function (aEvent)
+  {
+    if (aEvent.button != 0 || aEvent.target != this._reportButton)
+      return;
+
+    document.getElementById("blockedPopupOptions")
+            .openPopup(this._reportButton, "after_end", 0, 2, false, false, aEvent);
+  },
+
+  handleEvent: function (aEvent)
+  {
+    if (aEvent.originalTarget != gBrowser.selectedBrowser)
+      return;
+
+    if (!this._reportButton && gURLBar)
+      this._reportButton = document.getElementById("page-report-button");
+
+    if (!gBrowser.selectedBrowser.blockedPopups ||
+        !gBrowser.selectedBrowser.blockedPopups.length) {
+      // Hide the icon in the location bar (if the location bar exists)
+      if (gURLBar)
+        this._reportButton.hidden = true;
+      return;
+    }
+
+    if (gURLBar)
+      this._reportButton.hidden = false;
+
+    // Only show the notification again if we've not already shown it. Since
+    // notifications are per-browser, we don't need to worry about re-adding
+    // it.
+    if (!gBrowser.selectedBrowser.blockedPopups.reported) {
+      if (gPrefService.getBoolPref("privacy.popups.showBrowserMessage")) {
+        var brandBundle = document.getElementById("bundle_brand");
+        var brandShortName = brandBundle.getString("brandShortName");
+        var popupCount = gBrowser.selectedBrowser.blockedPopups.length;
+        var popupButtonText = gNavigatorBundle.getString("popupWarningButton");
+        var popupButtonAccesskey = gNavigatorBundle.getString("popupWarningButton.accesskey");
+        var messageBase = gNavigatorBundle.getString("popupWarning.message");
+        var message = PluralForm.get(popupCount, messageBase)
+                                .replace("#1", brandShortName)
+                                .replace("#2", popupCount);
+
+        var notificationBox = gBrowser.getNotificationBox();
+        var notification = notificationBox.getNotificationWithValue("popup-blocked");
+        if (notification) {
+          notification.label = message;
+        }
+        else {
+          var buttons = [{
+            label: popupButtonText,
+            accessKey: popupButtonAccesskey,
+            popup: "blockedPopupOptions",
+            callback: null
+          }];
+
+          const priority = notificationBox.PRIORITY_WARNING_MEDIUM;
+          notificationBox.appendNotification(message, "popup-blocked",
+                                             "chrome://browser/skin/Info.png",
+                                             priority, buttons);
+        }
+      }
+
+      // Record the fact that we've reported this blocked popup, so we don't
+      // show it again.
+      gBrowser.selectedBrowser.blockedPopups.reported = true;
+    }
+  },
+
+  toggleAllowPopupsForSite: function (aEvent)
+  {
+    var pm = Services.perms;
+    var shouldBlock = aEvent.target.getAttribute("block") == "true";
+    var perm = shouldBlock ? pm.DENY_ACTION : pm.ALLOW_ACTION;
+    pm.add(gBrowser.currentURI, "popup", perm);
+
+    gBrowser.getNotificationBox().removeCurrentNotification();
+  },
+
+  fillPopupList: function (aEvent)
+  {
+    // XXXben - rather than using |currentURI| here, which breaks down on multi-framed sites
+    //          we should really walk the blockedPopups and create a list of "allow for <host>"
+    //          menuitems for the common subset of hosts present in the report, this will
+    //          make us frame-safe.
+    //
+    // XXXjst - Note that when this is fixed to work with multi-framed sites,
+    //          also back out the fix for bug 343772 where
+    //          nsGlobalWindow::CheckOpenAllow() was changed to also
+    //          check if the top window's location is whitelisted.
+    let browser = gBrowser.selectedBrowser;
+    var uri = browser.currentURI;
+    var blockedPopupAllowSite = document.getElementById("blockedPopupAllowSite");
+    try {
+      blockedPopupAllowSite.removeAttribute("hidden");
+
+      var pm = Services.perms;
+      if (pm.testPermission(uri, "popup") == pm.ALLOW_ACTION) {
+        // Offer an item to block popups for this site, if a whitelist entry exists
+        // already for it.
+        let blockString = gNavigatorBundle.getFormattedString("popupBlock", [uri.host || uri.spec]);
+        blockedPopupAllowSite.setAttribute("label", blockString);
+        blockedPopupAllowSite.setAttribute("block", "true");
+      }
+      else {
+        // Offer an item to allow popups for this site
+        let allowString = gNavigatorBundle.getFormattedString("popupAllow", [uri.host || uri.spec]);
+        blockedPopupAllowSite.setAttribute("label", allowString);
+        blockedPopupAllowSite.removeAttribute("block");
+      }
+    }
+    catch (e) {
+      blockedPopupAllowSite.setAttribute("hidden", "true");
+    }
+
+    if (PrivateBrowsingUtils.isWindowPrivate(window))
+      blockedPopupAllowSite.setAttribute("disabled", "true");
+    else
+      blockedPopupAllowSite.removeAttribute("disabled");
+
+    let blockedPopupDontShowMessage = document.getElementById("blockedPopupDontShowMessage");
+    let showMessage = gPrefService.getBoolPref("privacy.popups.showBrowserMessage");
+    blockedPopupDontShowMessage.setAttribute("checked", !showMessage);
+    if (aEvent.target.anchorNode.id == "page-report-button") {
+      aEvent.target.anchorNode.setAttribute("open", "true");
+      blockedPopupDontShowMessage.setAttribute("label", gNavigatorBundle.getString("popupWarningDontShowFromLocationbar"));
+    } else {
+      blockedPopupDontShowMessage.setAttribute("label", gNavigatorBundle.getString("popupWarningDontShowFromMessage"));
+    }
+
+    let blockedPopupsSeparator =
+        document.getElementById("blockedPopupsSeparator");
+    blockedPopupsSeparator.setAttribute("hidden", true);
+
+    gBrowser.selectedBrowser.retrieveListOfBlockedPopups().then(blockedPopups => {
+      let foundUsablePopupURI = false;
+      if (blockedPopups) {
+        for (let i = 0; i < blockedPopups.length; i++) {
+          let blockedPopup = blockedPopups[i];
+
+          // popupWindowURI will be null if the file picker popup is blocked.
+          // xxxdz this should make the option say "Show file picker" and do it (Bug 590306)
+          if (!blockedPopup.popupWindowURIspec)
+            continue;
+
+          var popupURIspec = blockedPopup.popupWindowURIspec;
+
+          // Sometimes the popup URI that we get back from the blockedPopup
+          // isn't useful (for instance, netscape.com's popup URI ends up
+          // being "http://www.netscape.com", which isn't really the URI of
+          // the popup they're trying to show).  This isn't going to be
+          // useful to the user, so we won't create a menu item for it.
+          if (popupURIspec == "" || popupURIspec == "about:blank" ||
+              popupURIspec == "<self>" ||
+              popupURIspec == uri.spec)
+            continue;
+
+          // Because of the short-circuit above, we may end up in a situation
+          // in which we don't have any usable popup addresses to show in
+          // the menu, and therefore we shouldn't show the separator.  However,
+          // since we got past the short-circuit, we must've found at least
+          // one usable popup URI and thus we'll turn on the separator later.
+          foundUsablePopupURI = true;
+
+          var menuitem = document.createElement("menuitem");
+          var label = gNavigatorBundle.getFormattedString("popupShowPopupPrefix",
+                                                          [popupURIspec]);
+          menuitem.setAttribute("label", label);
+          menuitem.setAttribute("oncommand", "gPopupBlockerObserver.showBlockedPopup(event);");
+          menuitem.setAttribute("popupReportIndex", i);
+          menuitem.popupReportBrowser = browser;
+          aEvent.target.appendChild(menuitem);
+        }
+      }
+
+      // Show the separator if we added any
+      // showable popup addresses to the menu.
+      if (foundUsablePopupURI)
+        blockedPopupsSeparator.removeAttribute("hidden");
+    }, null);
+  },
+
+  onPopupHiding: function (aEvent) {
+    if (aEvent.target.anchorNode.id == "page-report-button")
+      aEvent.target.anchorNode.removeAttribute("open");
+
+    let item = aEvent.target.lastChild;
+    while (item && item.getAttribute("observes") != "blockedPopupsSeparator") {
+      let next = item.previousSibling;
+      item.parentNode.removeChild(item);
+      item = next;
+    }
+  },
+
+  showBlockedPopup: function (aEvent)
+  {
+    var target = aEvent.target;
+    var popupReportIndex = target.getAttribute("popupReportIndex");
+    let browser = target.popupReportBrowser;
+    browser.unblockPopup(popupReportIndex);
+  },
+
+  editPopupSettings: function ()
+  {
+    var host = "";
+    try {
+      host = gBrowser.currentURI.host;
+    }
+    catch (e) { }
+
+    var bundlePreferences = document.getElementById("bundle_preferences");
+    var params = { blockVisible   : false,
+                   sessionVisible : false,
+                   allowVisible   : true,
+                   prefilledHost  : host,
+                   permissionType : "popup",
+                   windowTitle    : bundlePreferences.getString("popuppermissionstitle"),
+                   introText      : bundlePreferences.getString("popuppermissionstext") };
+    var existingWindow = Services.wm.getMostRecentWindow("Browser:Permissions");
+    if (existingWindow) {
+      existingWindow.initWithParams(params);
+      existingWindow.focus();
+    }
+    else
+      window.openDialog("chrome://browser/content/preferences/permissions.xul",
+                        "_blank", "resizable,dialog=no,centerscreen", params);
+  },
+
+  dontShowMessage: function ()
+  {
+    var showMessage = gPrefService.getBoolPref("privacy.popups.showBrowserMessage");
+    gPrefService.setBoolPref("privacy.popups.showBrowserMessage", !showMessage);
+    gBrowser.getNotificationBox().removeCurrentNotification();
+  }
+};
+
+const gXSSObserver = {
+
+  observe: function (aSubject, aTopic, aData)
+  {
+
+    // Don't do anything if the notification is disabled.
+    if (!gPrefService.getBoolPref("security.xssfilter.displayWarning"))
+      return;
+
+    // Parse incoming XSS array
+    aSubject.QueryInterface(Ci.nsIArray);
+    var policy = aSubject.queryElementAt(0, Ci.nsISupportsString).data;
+    var content = aSubject.queryElementAt(1, Ci.nsISupportsString).data;
+    var domain = aSubject.queryElementAt(2, Ci.nsISupportsString).data;
+    var url = aSubject.queryElementAt(3, Ci.nsISupportsCString).data;
+    var blockMode = aSubject.queryElementAt(4, Ci.nsISupportsPRBool).data;
+
+    // If it is a block mode event, do not display the infobar
+    if (blockMode)
+      return;
+
+    var nb = gBrowser.getNotificationBox();
+    const priority = nb.PRIORITY_WARNING_MEDIUM;
+
+    var buttons = [{
+      label: 'View Unsafe Content',
+      accessKey: 'V',
+      popup: null,
+      callback: function () {
+        alert(content);
+      }
+    }];
+
+    if (domain !== "")
+      buttons.push({
+        label: 'Add Domain Exception',
+        accessKey: 'A',
+        popup: null,
+        callback: function () {
+          let whitelist = gPrefService.getCharPref("security.xssfilter.whitelist");
+          if (whitelist != "") {
+            whitelist = whitelist + "," + domain;
+          } else {
+            whitelist = domain;
+          }
+          // Write the updated whitelist. Since this is observed by the XSS filter,
+          // it will automatically sync to the back-end and update immediately.
+          gPrefService.setCharPref("security.xssfilter.whitelist", whitelist);
+          // After setting this, we automatically reload the page.
+          BrowserReloadSkipCache();
+        }
+      });
+    
+    nb.appendNotification("The XSS Filter has detected a potential XSS attack. Type: " +
+                          policy, 'popup-blocked', 'chrome://browser/skin/Info.png',
+                          priority, buttons);
+  }
+};
+
+var gBrowserInit = {
+  delayedStartupFinished: false,
+
+  onLoad: function() {
+    gMultiProcessBrowser = gPrefService.getBoolPref("browser.tabs.remote");
+
+    var mustLoadSidebar = false;
+
+    Cc["@mozilla.org/eventlistenerservice;1"]
+      .getService(Ci.nsIEventListenerService)
+      .addSystemEventListener(gBrowser, "click", contentAreaClick, true);
+
+    gBrowser.addEventListener("DOMUpdatePageReport", gPopupBlockerObserver, false);
+
+    // Note that the XBL binding is untrusted
+    gBrowser.addEventListener("PluginBindingAttached", gPluginHandler, true, true);
+    gBrowser.addEventListener("PluginCrashed",         gPluginHandler, true);
+    gBrowser.addEventListener("PluginOutdated",        gPluginHandler, true);
+    gBrowser.addEventListener("PluginInstantiated",    gPluginHandler, true);
+    gBrowser.addEventListener("PluginRemoved",         gPluginHandler, true);
+
+    Services.obs.addObserver(gPluginHandler.pluginCrashed, "plugin-crashed", false);
+
+    window.addEventListener("AppCommand", HandleAppCommandEvent, true);
+
+    // These routines add message listeners. They must run before
+    // loading the frame script to ensure that we don't miss any
+    // message sent between when the frame script is loaded and when
+    // the listener is registered.
+#ifdef MOZ_DEVTOOLS
+    DevToolsTheme.init();
+#endif
+    gFindBarSettings.init();
+
+    messageManager.loadFrameScript("chrome://browser/content/content.js", true);
+    messageManager.loadFrameScript("chrome://browser/content/content-sessionStore.js", true);
+
+    // initialize observers and listeners
+    // and give C++ access to gBrowser
+    XULBrowserWindow.init();
+    window.QueryInterface(Ci.nsIInterfaceRequestor)
+          .getInterface(nsIWebNavigation)
+          .QueryInterface(Ci.nsIDocShellTreeItem).treeOwner
+          .QueryInterface(Ci.nsIInterfaceRequestor)
+          .getInterface(Ci.nsIXULWindow)
+          .XULBrowserWindow = window.XULBrowserWindow;
+    window.QueryInterface(Ci.nsIDOMChromeWindow).browserDOMWindow =
+      new nsBrowserAccess();
+
+    // set default character set if provided
+    // window.arguments[1]: character set (string)
+    if ("arguments" in window && window.arguments.length > 1 && window.arguments[1]) {
+      if (window.arguments[1].startsWith("charset=")) {
+        var arrayArgComponents = window.arguments[1].split("=");
+        if (arrayArgComponents) {
+          //we should "inherit" the charset menu setting in a new window
+          //TFE FIXME: this is now a wrappednative and can't be set this way.
+          //getMarkupDocumentViewer().defaultCharacterSet = arrayArgComponents[1];
+        }
+      }
+    }
+
+    // Manually hook up session and global history for the first browser
+    // so that we don't have to load global history before bringing up a
+    // window.
+    // Wire up session and global history before any possible
+    // progress notifications for back/forward button updating
+    gBrowser.webNavigation.sessionHistory = Cc["@mozilla.org/browser/shistory;1"].
+                                            createInstance(Ci.nsISHistory);
+    Services.obs.addObserver(gBrowser.browsers[0], "browser:purge-session-history", false);
+
+    // remove the disablehistory attribute so the browser cleans up, as
+    // though it had done this work itself
+    gBrowser.browsers[0].removeAttribute("disablehistory");
+
+    // enable global history
+    try {
+      if (!gMultiProcessBrowser)
+      gBrowser.docShell.useGlobalHistory = true;
+    } catch(ex) {
+      Cu.reportError("Places database may be locked: " + ex);
+    }
+
+    // hook up UI through progress listener
+    gBrowser.addProgressListener(window.XULBrowserWindow);
+    gBrowser.addTabsProgressListener(window.TabsProgressListener);
+
+    // setup our common DOMLinkAdded listener
+    gBrowser.addEventListener("DOMLinkAdded", DOMLinkHandler, false);
+
+    // setup our MozApplicationManifest listener
+    gBrowser.addEventListener("MozApplicationManifest",
+                              OfflineApps, false);
+
+    // setup simple gestures support
+    gGestureSupport.init(true);
+
+    // setup history swipe animation
+    gHistorySwipeAnimation.init();
+
+    if (window.opener && !window.opener.closed) {
+      let openerSidebarBox = window.opener.document.getElementById("sidebar-box");
+      // If the opener had a sidebar, open the same sidebar in our window.
+      // The opener can be the hidden window too, if we're coming from the state
+      // where no windows are open, and the hidden window has no sidebar box.
+      if (openerSidebarBox && !openerSidebarBox.hidden) {
+        let sidebarCmd = openerSidebarBox.getAttribute("sidebarcommand");
+        let sidebarCmdElem = document.getElementById(sidebarCmd);
+
+        // dynamically generated sidebars will fail this check.
+        if (sidebarCmdElem) {
+          let sidebarBox = document.getElementById("sidebar-box");
+          let sidebarTitle = document.getElementById("sidebar-title");
+
+          sidebarTitle.setAttribute(
+            "value", window.opener.document.getElementById("sidebar-title").getAttribute("value"));
+          sidebarBox.setAttribute("width", openerSidebarBox.boxObject.width);
+
+          sidebarBox.setAttribute("sidebarcommand", sidebarCmd);
+          // Note: we're setting 'src' on sidebarBox, which is a <vbox>, not on
+          // the <browser id="sidebar">. This lets us delay the actual load until
+          // delayedStartup().
+          sidebarBox.setAttribute(
+            "src", window.opener.document.getElementById("sidebar").getAttribute("src"));
+          mustLoadSidebar = true;
+
+          sidebarBox.hidden = false;
+          document.getElementById("sidebar-splitter").hidden = false;
+          sidebarCmdElem.setAttribute("checked", "true");
+        }
+      }
+    }
+    else {
+      let box = document.getElementById("sidebar-box");
+      if (box.hasAttribute("sidebarcommand")) {
+        let commandID = box.getAttribute("sidebarcommand");
+        if (commandID) {
+          let command = document.getElementById(commandID);
+          if (command) {
+            mustLoadSidebar = true;
+            box.hidden = false;
+            document.getElementById("sidebar-splitter").hidden = false;
+            command.setAttribute("checked", "true");
+          }
+          else {
+            // Remove the |sidebarcommand| attribute, because the element it
+            // refers to no longer exists, so we should assume this sidebar
+            // panel has been uninstalled. (249883)
+            box.removeAttribute("sidebarcommand");
+          }
+        }
+      }
+    }
+
+    // Certain kinds of automigration rely on this notification to complete their
+    // tasks BEFORE the browser window is shown.
+    Services.obs.notifyObservers(null, "browser-window-before-show", "");
+
+    // Set a sane starting width/height for all resolutions on new profiles.
+    if (!document.documentElement.hasAttribute("width")) {
+      let defaultWidth;
+      let defaultHeight;
+
+      // Very small: maximize the window
+      // Portrait  : use about full width and 3/4 height, to view entire pages
+      //             at once (without being obnoxiously tall)
+      // Widescreen: use about half width, to suggest side-by-side page view
+      // Otherwise : use 3/4 height and width
+      if (screen.availHeight <= 600) {
+        document.documentElement.setAttribute("sizemode", "maximized");
+        defaultWidth = 610;
+        defaultHeight = 450;
+      }
+      else {
+        if (screen.availWidth <= screen.availHeight) {
+          defaultWidth = screen.availWidth * .9;
+          defaultHeight = screen.availHeight * .75;
+        }
+        else if (screen.availWidth >= 2048) {
+          defaultWidth = (screen.availWidth / 2) - 20;
+          defaultHeight = screen.availHeight - 10;
+        }
+        else {
+          defaultWidth = screen.availWidth * .75;
+          defaultHeight = screen.availHeight * .75;
+        }
+
+#ifdef MOZ_WIDGET_GTK2
+        // On X, we're not currently able to account for the size of the window
+        // border.  Use 28px as a guess (titlebar + bottom window border)
+        defaultHeight -= 28;
+#endif
+      }
+      document.documentElement.setAttribute("width", defaultWidth);
+      document.documentElement.setAttribute("height", defaultHeight);
+    }
+
+    if (!gShowPageResizers)
+      document.getElementById("status-bar").setAttribute("hideresizer", "true");
+
+    if (!window.toolbar.visible) {
+      // adjust browser UI for popups
+      if (gURLBar) {
+        gURLBar.setAttribute("readonly", "true");
+        gURLBar.setAttribute("enablehistory", "false");
+      }
+      goSetCommandEnabled("cmd_newNavigatorTab", false);
+    }
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+    updateAppButtonDisplay();
+#endif
+
+    // Misc. inits.
+    CombinedStopReload.init();
+    allTabs.readPref();
+    TabsOnTop.init();
+    AudioIndicator.init();
+    gPrivateBrowsingUI.init();
+    TabsInTitlebar.init();
+    retrieveToolbarIconsizesFromTheme();
+    ToolbarIconColor.init();
+    UserAgentCompatibility.init();
+
+#ifdef XP_WIN
+    if (window.matchMedia("(-moz-os-version: windows-win8)").matches &&
+        window.matchMedia("(-moz-windows-default-theme)").matches) {
+      let windows8WindowFrameColor = Cu.import("resource:///modules/Windows8WindowFrameColor.jsm", {}).Windows8WindowFrameColor;
+      
+      var windowFrameColor;
+      windowFrameColor = windows8WindowFrameColor.get_win8();
+
+      // Formula from Microsoft's UWP guideline.
+      let backgroundLuminance = (windowFrameColor[0] * 2 +
+                                 windowFrameColor[1] * 5 +
+                                 windowFrameColor[2]) / 8;
+      if (backgroundLuminance <= 128) {
+        document.documentElement.setAttribute("darkwindowframe", "true");
+      }
+    }
+#endif
+
+    // Wait until chrome is painted before executing code not critical to making the window visible
+    this._boundDelayedStartup = this._delayedStartup.bind(this, mustLoadSidebar);
+    window.addEventListener("MozAfterPaint", this._boundDelayedStartup);
+
+    this._loadHandled = true;
+  },
+
+  _cancelDelayedStartup: function () {
+    window.removeEventListener("MozAfterPaint", this._boundDelayedStartup);
+    this._boundDelayedStartup = null;
+  },
+
+  _delayedStartup: function(mustLoadSidebar) {
+    let tmp = {};
+
+    this._cancelDelayedStartup();
+
+    let uriToLoad = this._getUriToLoad();
+    var isLoadingBlank = isBlankPageURL(uriToLoad);
+
+    // This pageshow listener needs to be registered before we may call
+    // swapBrowsersAndCloseOther() to receive pageshow events fired by that.
+    gBrowser.addEventListener("pageshow", function(event) {
+      // Filter out events that are not about the document load we are interested in
+      if (content && event.target == content.document)
+        setTimeout(pageShowEventHandlers, 0, event.persisted);
+    }, true);
+
+    if (uriToLoad && uriToLoad != "about:blank") {
+      if (uriToLoad instanceof Ci.nsISupportsArray) {
+        let count = uriToLoad.Count();
+        let specs = [];
+        for (let i = 0; i < count; i++) {
+          let urisstring = uriToLoad.GetElementAt(i).QueryInterface(Ci.nsISupportsString);
+          specs.push(urisstring.data);
+        }
+
+        // This function throws for certain malformed URIs, so use exception handling
+        // so that we don't disrupt startup
+        try {
+          gBrowser.loadTabs(specs, false, true);
+        } catch (e) {}
+      }
+      else if (uriToLoad instanceof XULElement) {
+        // swap the given tab with the default about:blank tab and then close
+        // the original tab in the other window.
+
+        // Stop the about:blank load
+        gBrowser.stop();
+        // make sure it has a docshell
+        gBrowser.docShell;
+
+        gBrowser.swapBrowsersAndCloseOther(gBrowser.selectedTab, uriToLoad);
+      }
+      // window.arguments[2]: referrer (nsIURI | string)
+      //                 [3]: postData (nsIInputStream)
+      //                 [4]: allowThirdPartyFixup (bool)
+      //                 [5]: referrerPolicy (int)
+      //                 [6]: originPrincipal (nsIPrincipal)
+      //                 [7]: triggeringPrincipal (nsIPrincipal)
+      else if (window.arguments.length >= 3) {
+        let referrerURI = window.arguments[2];
+        if (typeof(referrerURI) == "string") {
+          try {
+            referrerURI = makeURI(referrerURI);
+          } catch (e) {
+            referrerURI = null;
+          }
+        }
+        let referrerPolicy = (window.arguments[5] != undefined ?
+            window.arguments[5] : Ci.nsIHttpChannel.REFERRER_POLICY_DEFAULT);
+        loadURI(uriToLoad, referrerURI, window.arguments[3] || null,
+                window.arguments[4] || false, referrerPolicy,
+                // pass the origin principal (if any) and force its use to create
+                // an initial about:blank viewer if present:
+                window.arguments[6], !!window.arguments[6], window.arguments[7]);
+        window.focus();
+      }
+      // Note: loadOneOrMoreURIs *must not* be called if window.arguments.length >= 3.
+      // Such callers expect that window.arguments[0] is handled as a single URI.
+      else
+        loadOneOrMoreURIs(uriToLoad);
+    }
+
+    Services.obs.addObserver(gSessionHistoryObserver, "browser:purge-session-history", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-disabled", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-started", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-blocked", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-origin-blocked", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-failed", false);
+    Services.obs.addObserver(gXPInstallObserver, "addon-install-complete", false);
+    Services.obs.addObserver(gXSSObserver, "xss-on-violate-policy", false);
+
+    gPrefService.addObserver(gURLBarSettings.prefSuggest, gURLBarSettings, false);
+    gPrefService.addObserver(gURLBarSettings.prefKeyword, gURLBarSettings, false);
+
+    gURLBarSettings.writePlaceholder();
+
+    BrowserOffline.init();
+    OfflineApps.init();
+    IndexedDBPromptHelper.init();
+    AddonManager.addAddonListener(AddonsMgrListener);
+#ifdef MOZ_WEBRTC
+    WebrtcIndicator.init();
+#endif
+
+    // Ensure login manager is up and running.
+    Services.logins;
+
+    if (mustLoadSidebar) {
+      let sidebar = document.getElementById("sidebar");
+      let sidebarBox = document.getElementById("sidebar-box");
+      sidebar.setAttribute("src", sidebarBox.getAttribute("src"));
+    }
+
+    UpdateUrlbarSearchSplitterState();
+
+    if (!isLoadingBlank || !focusAndSelectUrlBar())
+      gBrowser.selectedBrowser.focus();
+
+    gNavToolbox.customizeDone = BrowserToolboxCustomizeDone;
+    gNavToolbox.customizeChange = BrowserToolboxCustomizeChange;
+
+    // Set up Sanitize Item
+    this._initializeSanitizer();
+
+    // Enable/Disable auto-hide tabbar
+    gBrowser.tabContainer.updateVisibility();
+
+    gPrefService.addObserver(gHomeButton.prefDomain, gHomeButton, false);
+
+    var homeButton = document.getElementById("home-button");
+    gHomeButton.updateTooltip(homeButton);
+    gHomeButton.updatePersonalToolbarStyle(homeButton);
+
+    // BiDi UI
+    gBidiUI = isBidiEnabled();
+    if (gBidiUI) {
+      document.getElementById("documentDirection-separator").hidden = false;
+      document.getElementById("documentDirection-swap").hidden = false;
+      document.getElementById("textfieldDirection-separator").hidden = false;
+      document.getElementById("textfieldDirection-swap").hidden = false;
+    }
+
+    // Setup click-and-hold gestures access to the session history
+    // menus if global click-and-hold isn't turned on
+    if (!Services.prefs.getBoolPref("ui.click_hold_context_menus", false))
+      SetClickAndHoldHandlers();
+
+    // Initialize the full zoom setting.
+    // We do this before the session restore service gets initialized so we can
+    // apply full zoom settings to tabs restored by the session restore service.
+    FullZoom.init();
+
+    // Bug 666804 - NetworkPrioritizer support for e10s
+    if (!gMultiProcessBrowser) {
+      let NP = {};
+      Cu.import("resource:///modules/NetworkPrioritizer.jsm", NP);
+      NP.trackBrowserWindow(window);
+    }
+
+    // initialize the session-restore service (in case it's not already running)
+    let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
+    let ssPromise = ss.init(window);
+
+    PlacesToolbarHelper.init();
+
+    ctrlTab.readPref();
+    gPrefService.addObserver(ctrlTab.prefName, ctrlTab, false);
+    gPrefService.addObserver(allTabs.prefName, allTabs, false);
+
+    // Initialize the download manager some time after the app starts so that
+    // auto-resume downloads begin (such as after crashing or quitting with
+    // active downloads) and speeds up the first-load of the download manager UI.
+    // If the user manually opens the download manager before the timeout, the
+    // downloads will start right away, and getting the service again won't hurt.
+    setTimeout(function() {
+      try {
+        Cu.import("resource:///modules/DownloadsCommon.jsm", {})
+          .DownloadsCommon.initializeAllDataLinks();
+        Cu.import("resource:///modules/DownloadsTaskbar.jsm", {})
+          .DownloadsTaskbar.registerIndicator(window);
+      } catch(ex) {
+        Cu.reportError(ex);
+      }
+    }, 10000);
+
+    // Load the Login Manager data from disk off the main thread, some time
+    // after startup.  If the data is required before the timeout, for example
+    // because a restored page contains a password field, it will be loaded on
+    // the main thread, and this initialization request will be ignored.
+    setTimeout(function() {
+      try {
+        Services.logins;
+      } catch (ex) {
+        Cu.reportError(ex);
+      }
+    }, 3000);
+    
+    // The object handling the downloads indicator is also initialized here in the
+    // delayed startup function, but the actual indicator element is not loaded
+    // unless there are downloads to be displayed.
+    DownloadsButton.initializeIndicator();
+
+#ifndef XP_MACOSX
+    updateEditUIVisibility();
+    let placesContext = document.getElementById("placesContext");
+    placesContext.addEventListener("popupshowing", updateEditUIVisibility, false);
+    placesContext.addEventListener("popuphiding", updateEditUIVisibility, false);
+#endif
+
+#ifdef MOZ_PERSONAS
+    gBrowser.mPanelContainer.addEventListener("InstallBrowserTheme", LightWeightThemeWebInstaller, false, true);
+    gBrowser.mPanelContainer.addEventListener("PreviewBrowserTheme", LightWeightThemeWebInstaller, false, true);
+    gBrowser.mPanelContainer.addEventListener("ResetBrowserThemePreview", LightWeightThemeWebInstaller, false, true);
+#endif
+
+    // Bug 666808 - AeroPeek support for e10s
+    if (!gMultiProcessBrowser) {
+      if (Win7Features)
+        Win7Features.onOpenWindow();
+    }
+
+   // called when we go into full screen, even if initiated by a web page script
+    window.addEventListener("fullscreen", onFullScreen, true);
+
+    // Called when we enter DOM full-screen mode. Note we can already be in browser
+    // full-screen mode when we enter DOM full-screen mode.
+    window.addEventListener("MozDOMFullscreen:NewOrigin", onMozEnteredDomFullscreen, true);
+
+    if (window.fullScreen)
+      onFullScreen();
+    if (document.mozFullScreen)
+      onMozEnteredDomFullscreen();
+
+#ifdef MOZ_SERVICES_SYNC
+    // initialize the sync UI
+    gSyncUI.init();
+#endif
+
+    gBrowserThumbnails.init();
+
+    setUrlAndSearchBarWidthForConditionalForwardButton();
+    window.addEventListener("resize", function resizeHandler(event) {
+      if (event.target == window)
+        setUrlAndSearchBarWidthForConditionalForwardButton();
+    });
+
+    // Enable Error Console?
+    let consoleEnabled = gPrefService.getBoolPref("devtools.errorconsole.enabled");
+    if (consoleEnabled) {
+      let cmd = document.getElementById("Tools:ErrorConsole");
+      cmd.removeAttribute("disabled");
+      cmd.removeAttribute("hidden");
+    }
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+    // If the user (or the locale) hasn't enabled the top-level "Character
+    // Encoding" menu via the "browser.menu.showCharacterEncoding" preference,
+    // hide it.
+    if ("true" != gPrefService.getComplexValue("browser.menu.showCharacterEncoding",
+                                               Ci.nsIPrefLocalizedString).data)
+      document.getElementById("appmenu_charsetMenu").hidden = true;
+#endif
+
+    let appMenuButton = document.getElementById("appmenu-button");
+    let appMenuPopup = document.getElementById("appmenu-popup");
+    if (appMenuButton && appMenuPopup) {
+      let appMenuOpening = null;
+      appMenuButton.addEventListener("mousedown", function(event) {
+        if (event.button == 0)
+          appMenuOpening = new Date();
+      }, false);
+      appMenuPopup.addEventListener("popupshown", function(event) {
+        if (event.target != appMenuPopup || !appMenuOpening)
+          return;
+        let duration = new Date() - appMenuOpening;
+        appMenuOpening = null;
+      }, false);
+    }
+
+    window.addEventListener("mousemove", MousePosTracker, false);
+    window.addEventListener("dragover", MousePosTracker, false);
+
+    // End startup crash tracking after a delay to catch crashes while restoring
+    // tabs and to postpone saving the pref to disk.
+    try {
+      const startupCrashEndDelay = 30 * 1000;
+      setTimeout(Services.startup.trackStartupCrashEnd, startupCrashEndDelay);
+    } catch (ex) {
+      Cu.reportError("Could not end startup crash tracking: " + ex);
+    }
+
+    ssPromise.then(() =>{
+      // Bail out if the window has been closed in the meantime.
+      if (window.closed) {
+        return;
+      }
+      if ("TabView" in window) {
+        TabView.init();
+      }
+      // XXX: do we still need this?...
+      setTimeout(function () { BrowserChromeTest.markAsReady(); }, 0);
+    });
+
+    this.delayedStartupFinished = true;
+
+    Services.obs.notifyObservers(window, "browser-delayed-startup-finished", "");
+  },
+
+  // Returns the URI(s) to load at startup.
+  _getUriToLoad: function () {
+    // window.arguments[0]: URI to load (string), or an nsISupportsArray of
+    //                      nsISupportsStrings to load, or a xul:tab of
+    //                      a tabbrowser, which will be replaced by this
+    //                      window (for this case, all other arguments are
+    //                      ignored).
+    if (!window.arguments || !window.arguments[0])
+      return null;
+
+    let uri = window.arguments[0];
+    let sessionStartup = Cc["@mozilla.org/browser/sessionstartup;1"]
+                           .getService(Ci.nsISessionStartup);
+    let defaultArgs = Cc["@mozilla.org/browser/clh;1"]
+                        .getService(Ci.nsIBrowserHandler)
+                        .defaultArgs;
+
+    // If the given URI matches defaultArgs (the default homepage) we want
+    // to block its load if we're going to restore a session anyway.
+    if (uri == defaultArgs && sessionStartup.willOverrideHomepage)
+      return null;
+
+    return uri;
+  },
+
+  onUnload: function() {
+    // In certain scenarios it's possible for unload to be fired before onload,
+    // (e.g. if the window is being closed after browser.js loads but before the
+    // load completes). In that case, there's nothing to do here.
+    if (!this._loadHandled)
+      return;
+
+    // First clean up services initialized in gBrowserInit.onLoad (or those whose
+    // uninit methods don't depend on the services having been initialized).
+    
+    allTabs.uninit();
+
+    CombinedStopReload.uninit();
+
+    gGestureSupport.init(false);
+
+    gHistorySwipeAnimation.uninit();
+
+    FullScreen.cleanup();
+
+    Services.obs.removeObserver(gPluginHandler.pluginCrashed, "plugin-crashed");
+
+    try {
+      gBrowser.removeProgressListener(window.XULBrowserWindow);
+      gBrowser.removeTabsProgressListener(window.TabsProgressListener);
+    } catch (ex) {
+    }
+
+    BookmarkingUI.uninit();
+
+    TabsOnTop.uninit();
+    
+    AudioIndicator.uninit();
+
+    TabsInTitlebar.uninit();
+    
+    ToolbarIconColor.uninit();
+
+#ifdef MOZ_DEVTOOLS
+    DevToolsTheme.uninit();
+#endif
+    gFindBarSettings.uninit();
+
+    UserAgentCompatibility.uninit();
+
+    var enumerator = Services.wm.getEnumerator(null);
+    enumerator.getNext();
+    if (!enumerator.hasMoreElements()) {
+      document.persist("sidebar-box", "sidebarcommand");
+      document.persist("sidebar-box", "width");
+      document.persist("sidebar-box", "src");
+      document.persist("sidebar-title", "value");
+    }
+
+    // Now either cancel delayedStartup, or clean up the services initialized from
+    // it.
+    if (this._boundDelayedStartup) {
+      this._cancelDelayedStartup();
+    } else {
+      if (Win7Features)
+        Win7Features.onCloseWindow();
+
+      gPrefService.removeObserver(ctrlTab.prefName, ctrlTab);
+      gPrefService.removeObserver(allTabs.prefName, allTabs);
+      ctrlTab.uninit();
+      if ("TabView" in window) {
+        TabView.uninit();
+      }
+      gBrowserThumbnails.uninit();
+      FullZoom.destroy();
+
+      Services.obs.removeObserver(gSessionHistoryObserver, "browser:purge-session-history");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-disabled");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-started");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-blocked");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-origin-blocked");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-failed");
+      Services.obs.removeObserver(gXPInstallObserver, "addon-install-complete");
+      Services.obs.removeObserver(gXSSObserver, "xss-on-violate-policy");
+
+      try {
+        gPrefService.removeObserver(gURLBarSettings.prefSuggest, gURLBarSettings);
+        gPrefService.removeObserver(gURLBarSettings.prefKeyword, gURLBarSettings);
+      } catch (ex) {
+        Cu.reportError(ex);
+      }
+
+      try {
+        gPrefService.removeObserver(gHomeButton.prefDomain, gHomeButton);
+      } catch (ex) {
+        Cu.reportError(ex);
+      }
+
+      BrowserOffline.uninit();
+      OfflineApps.uninit();
+      IndexedDBPromptHelper.uninit();
+      AddonManager.removeAddonListener(AddonsMgrListener);
+    }
+
+    // Final window teardown, do this last.
+    window.XULBrowserWindow.destroy();
+    window.XULBrowserWindow = null;
+    window.QueryInterface(Ci.nsIInterfaceRequestor)
+          .getInterface(Ci.nsIWebNavigation)
+          .QueryInterface(Ci.nsIDocShellTreeItem).treeOwner
+          .QueryInterface(Ci.nsIInterfaceRequestor)
+          .getInterface(Ci.nsIXULWindow)
+          .XULBrowserWindow = null;
+    window.QueryInterface(Ci.nsIDOMChromeWindow).browserDOMWindow = null;
+  },
+
+#ifdef XP_MACOSX
+  // nonBrowserWindowStartup(), nonBrowserWindowDelayedStartup(), and
+  // nonBrowserWindowShutdown() are used for non-browser windows in
+  // macBrowserOverlay
+  nonBrowserWindowStartup: function() {
+    // Disable inappropriate commands / submenus
+    var disabledItems = ['Browser:SavePage',
+                         'Browser:SendLink', 'cmd_pageSetup', 'cmd_print', 'cmd_find', 'cmd_findAgain',
+                         'viewToolbarsMenu', 'viewSidebarMenuMenu', 'Browser:Reload',
+                         'viewFullZoomMenu', 'pageStyleMenu', 'charsetMenu', 'View:PageSource', 'View:FullScreen',
+                         'viewHistorySidebar', 'Browser:AddBookmarkAs', 'Browser:BookmarkAllTabs',
+                         'View:PageInfo', 'Browser:ToggleAddonBar'];
+    var element;
+
+    for (let disabledItem of disabledItems) {
+      element = document.getElementById(disabledItem);
+      if (element)
+        element.setAttribute("disabled", "true");
+    }
+
+    // If no windows are active (i.e. we're the hidden window), disable the close, minimize
+    // and zoom menu commands as well
+    if (window.location.href == "chrome://browser/content/hiddenWindow.xul") {
+      var hiddenWindowDisabledItems = ['cmd_close', 'minimizeWindow', 'zoomWindow'];
+      for (let hiddenWindowDisabledItem of hiddenWindowDisabledItems) {
+        element = document.getElementById(hiddenWindowDisabledItem);
+        if (element)
+          element.setAttribute("disabled", "true");
+      }
+
+      // also hide the window-list separator
+      element = document.getElementById("sep-window-list");
+      element.setAttribute("hidden", "true");
+
+      // Setup the dock menu.
+      let dockMenuElement = document.getElementById("menu_mac_dockmenu");
+      if (dockMenuElement != null) {
+        let nativeMenu = Cc["@mozilla.org/widget/standalonenativemenu;1"]
+                         .createInstance(Ci.nsIStandaloneNativeMenu);
+
+        try {
+          nativeMenu.init(dockMenuElement);
+
+          let dockSupport = Cc["@mozilla.org/widget/macdocksupport;1"]
+                            .getService(Ci.nsIMacDockSupport);
+          dockSupport.dockMenu = nativeMenu;
+        }
+        catch (e) {
+        }
+      }
+    }
+
+    if (PrivateBrowsingUtils.permanentPrivateBrowsing) {
+      document.getElementById("macDockMenuNewWindow").hidden = true;
+    }
+
+    this._delayedStartupTimeoutId = setTimeout(this.nonBrowserWindowDelayedStartup.bind(this), 0);
+  },
+
+  nonBrowserWindowDelayedStartup: function() {
+    this._delayedStartupTimeoutId = null;
+
+    // initialise the offline listener
+    BrowserOffline.init();
+
+    // Set up Sanitize Item
+    this._initializeSanitizer();
+
+    // initialize the private browsing UI
+    gPrivateBrowsingUI.init();
+
+#ifdef MOZ_SERVICES_SYNC
+    // initialize the sync UI
+    gSyncUI.init();
+#endif
+  },
+
+  nonBrowserWindowShutdown: function() {
+    // If nonBrowserWindowDelayedStartup hasn't run yet, we have no work to do -
+    // just cancel the pending timeout and return;
+    if (this._delayedStartupTimeoutId) {
+      clearTimeout(this._delayedStartupTimeoutId);
+      return;
+    }
+
+    BrowserOffline.uninit();
+  },
+#endif
+
+  _initializeSanitizer: function() {
+    const kDidSanitizeDomain = "privacy.sanitize.didShutdownSanitize";
+    if (gPrefService.prefHasUserValue(kDidSanitizeDomain)) {
+      gPrefService.clearUserPref(kDidSanitizeDomain);
+      // We need to persist this preference change, since we want to
+      // check it at next app start even if the browser exits abruptly
+      gPrefService.savePrefFile(null);
+    }
+
+    /**
+     * Migrate Firefox 3.0 privacy.item prefs under one of these conditions:
+     *
+     * a) User has customized any privacy.item prefs
+     * b) privacy.sanitize.sanitizeOnShutdown is set
+     */
+    if (!gPrefService.getBoolPref("privacy.sanitize.migrateFx3Prefs")) {
+      let itemBranch = gPrefService.getBranch("privacy.item.");
+      let itemArray = itemBranch.getChildList("");
+
+      // See if any privacy.item prefs are set
+      let doMigrate = itemArray.some(function (name) itemBranch.prefHasUserValue(name));
+      // Or if sanitizeOnShutdown is set
+      if (!doMigrate)
+        doMigrate = gPrefService.getBoolPref("privacy.sanitize.sanitizeOnShutdown");
+
+      if (doMigrate) {
+        let cpdBranch = gPrefService.getBranch("privacy.cpd.");
+        let clearOnShutdownBranch = gPrefService.getBranch("privacy.clearOnShutdown.");
+        for (let name of itemArray) {
+          try {
+            // don't migrate password or offlineApps clearing in the CRH dialog since
+            // there's no UI for those anymore. They default to false. bug 497656
+            if (name != "passwords" && name != "offlineApps")
+              cpdBranch.setBoolPref(name, itemBranch.getBoolPref(name));
+            clearOnShutdownBranch.setBoolPref(name, itemBranch.getBoolPref(name));
+          }
+          catch(e) {
+            Cu.reportError("Exception thrown during privacy pref migration: " + e);
+          }
+        }
+      }
+
+      gPrefService.setBoolPref("privacy.sanitize.migrateFx3Prefs", true);
+    }
+  },
+}
+
+
+/* Legacy global init functions */
+var BrowserStartup        = gBrowserInit.onLoad.bind(gBrowserInit);
+var BrowserShutdown       = gBrowserInit.onUnload.bind(gBrowserInit);
+#ifdef XP_MACOSX
+var nonBrowserWindowStartup        = gBrowserInit.nonBrowserWindowStartup.bind(gBrowserInit);
+var nonBrowserWindowDelayedStartup = gBrowserInit.nonBrowserWindowDelayedStartup.bind(gBrowserInit);
+var nonBrowserWindowShutdown       = gBrowserInit.nonBrowserWindowShutdown.bind(gBrowserInit);
+#endif
+
+function HandleAppCommandEvent(evt) {
+  switch (evt.command) {
+  case "Back":
+    BrowserBack();
+    break;
+  case "Forward":
+    BrowserForward();
+    break;
+  case "Reload":
+    BrowserReloadSkipCache();
+    break;
+  case "Stop":
+    if (XULBrowserWindow.stopCommand.getAttribute("disabled") != "true")
+      BrowserStop();
+    break;
+  case "Search":
+    BrowserSearch.webSearch();
+    break;
+  case "Bookmarks":
+    toggleSidebar('viewBookmarksSidebar');
+    break;
+  case "Home":
+    BrowserHome();
+    break;
+  case "New":
+    BrowserOpenTab();
+    break;
+  case "Close":
+    BrowserCloseTabOrWindow();
+    break;
+  case "Find":
+    gFindBar.onFindCommand();
+    break;
+  case "Help":
+    openHelpLink('firefox-help');
+    break;
+  case "Open":
+    BrowserOpenFileWindow();
+    break;
+  case "Print":
+    PrintUtils.print();
+    break;
+  case "Save":
+    saveDocument(window.content.document);
+    break;
+  case "SendMail":
+    MailIntegration.sendLinkForWindow(window.content);
+    break;
+  default:
+    return;
+  }
+  evt.stopPropagation();
+  evt.preventDefault();
+}
+
+function gotoHistoryIndex(aEvent) {
+  let index = aEvent.target.getAttribute("index");
+  if (!index)
+    return false;
+
+  let where = whereToOpenLink(aEvent);
+
+  if (where == "current") {
+    // Normal click. Go there in the current tab and update session history.
+
+    try {
+      gBrowser.gotoIndex(index);
+    }
+    catch(ex) {
+      return false;
+    }
+    return true;
+  }
+  // Modified click. Go there in a new tab/window.
+
+  duplicateTabIn(gBrowser.selectedTab, where, index - gBrowser.sessionHistory.index);
+  return true;
+}
+
+function BrowserForward(aEvent) {
+  let where = whereToOpenLink(aEvent, false, true);
+
+  if (where == "current") {
+    try {
+      gBrowser.goForward();
+    }
+    catch(ex) {
+    }
+  }
+  else {
+    duplicateTabIn(gBrowser.selectedTab, where, 1);
+  }
+}
+
+function BrowserBack(aEvent) {
+  let where = whereToOpenLink(aEvent, false, true);
+
+  if (where == "current") {
+    try {
+      gBrowser.goBack();
+    }
+    catch(ex) {
+    }
+  }
+  else {
+    duplicateTabIn(gBrowser.selectedTab, where, -1);
+  }
+}
+
+function BrowserHandleBackspace()
+{
+  switch (gPrefService.getIntPref("browser.backspace_action")) {
+  case 0:
+    BrowserBack();
+    break;
+  case 1:
+    goDoCommand("cmd_scrollPageUp");
+    break;
+  }
+}
+
+function BrowserHandleShiftBackspace()
+{
+  switch (gPrefService.getIntPref("browser.backspace_action")) {
+  case 0:
+    BrowserForward();
+    break;
+  case 1:
+    goDoCommand("cmd_scrollPageDown");
+    break;
+  }
+}
+
+function BrowserStop() {
+  const stopFlags = nsIWebNavigation.STOP_ALL;
+  gBrowser.webNavigation.stop(stopFlags);
+}
+
+function BrowserReloadOrDuplicate(aEvent) {
+  var backgroundTabModifier = aEvent.button == 1 ||
+#ifdef XP_MACOSX
+    aEvent.metaKey;
+#else
+    aEvent.ctrlKey;
+#endif
+  if (aEvent.shiftKey && !backgroundTabModifier) {
+    BrowserReloadSkipCache();
+    return;
+  }
+
+  let where = whereToOpenLink(aEvent, false, true);
+  if (where == "current")
+    BrowserReload();
+  else
+    duplicateTabIn(gBrowser.selectedTab, where);
+}
+
+function BrowserReload() {
+  const reloadFlags = nsIWebNavigation.LOAD_FLAGS_NONE;
+  BrowserReloadWithFlags(reloadFlags);
+}
+
+function BrowserReloadSkipCache() {
+  // Bypass proxy and cache.
+  const reloadFlags = nsIWebNavigation.LOAD_FLAGS_BYPASS_PROXY | nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE;
+  BrowserReloadWithFlags(reloadFlags);
+}
+
+var BrowserHome = BrowserGoHome;
+function BrowserGoHome(aEvent) {
+  if (aEvent && "button" in aEvent &&
+      aEvent.button == 2) // right-click: do nothing
+    return;
+
+  var homePage = gHomeButton.getHomePage();
+  var where = whereToOpenLink(aEvent, false, true);
+  var urls;
+
+  // Home page should open in a new tab when current tab is an app tab
+  if (where == "current" &&
+      gBrowser &&
+      gBrowser.selectedTab.pinned)
+    where = "tab";
+
+  // openUILinkIn in utilityOverlay.js doesn't handle loading multiple pages
+  switch (where) {
+  case "current":
+    loadOneOrMoreURIs(homePage);
+    break;
+  case "tabshifted":
+  case "tab":
+    urls = homePage.split("|");
+    var loadInBackground = Services.prefs.getBoolPref("browser.tabs.loadBookmarksInBackground", false);
+    gBrowser.loadTabs(urls, loadInBackground);
+    break;
+  case "window":
+    OpenBrowserWindow();
+    break;
+  }
+}
+
+function loadOneOrMoreURIs(aURIString)
+{
+#ifdef XP_MACOSX
+  // we're not a browser window, pass the URI string to a new browser window
+  if (window.location.href != getBrowserURL())
+  {
+    window.openDialog(getBrowserURL(), "_blank", "all,dialog=no", aURIString);
+    return;
+  }
+#endif
+  // This function throws for certain malformed URIs, so use exception handling
+  // so that we don't disrupt startup
+  try {
+    gBrowser.loadTabs(aURIString.split("|"), false, true);
+  }
+  catch (e) {
+  }
+}
+
+function focusAndSelectUrlBar() {
+  if (gURLBar) {
+    if (window.fullScreen)
+      FullScreen.showNavToolbox();
+
+    gURLBar.select();
+    if (document.activeElement == gURLBar.inputField)
+      return true;
+  }
+  return false;
+}
+
+function openLocation() {
+  if (focusAndSelectUrlBar())
+    return;
+
+#ifdef XP_MACOSX
+  if (window.location.href != getBrowserURL()) {
+    var win = getTopWin();
+    if (win) {
+      // If there's an open browser window, it should handle this command
+      win.focus()
+      win.openLocation();
+    }
+    else {
+      // If there are no open browser windows, open a new one
+      win = window.openDialog("chrome://browser/content/", "_blank",
+                              "chrome,all,dialog=no", BROWSER_NEW_TAB_URL);
+      win.addEventListener("load", openLocationCallback, false);
+    }
+    return;
+  }
+#endif
+  openDialog("chrome://browser/content/openLocation.xul", "_blank",
+             "chrome,modal,titlebar", window);
+}
+
+function openLocationCallback()
+{
+  // make sure the DOM is ready
+  setTimeout(function() { this.openLocation(); }, 0);
+}
+
+function BrowserOpenTab()
+{
+  openUILinkIn(BROWSER_NEW_TAB_URL, "tab");
+}
+
+/* Called from the openLocation dialog. This allows that dialog to instruct
+   its opener to open a new window and then step completely out of the way.
+   Anything less byzantine is causing horrible crashes, rather believably,
+   though oddly only on Linux. */
+function delayedOpenWindow(chrome, flags, href, postData)
+{
+  // The other way to use setTimeout,
+  // setTimeout(openDialog, 10, chrome, "_blank", flags, url),
+  // doesn't work here.  The extra "magic" extra argument setTimeout adds to
+  // the callback function would confuse gBrowserInit.onLoad() by making
+  // window.arguments[1] be an integer instead of null.
+  setTimeout(function() { openDialog(chrome, "_blank", flags, href, null, null, postData); }, 10);
+}
+
+/* Required because the tab needs time to set up its content viewers and get the load of
+   the URI kicked off before becoming the active content area. */
+function delayedOpenTab(aUrl, aReferrer, aCharset, aPostData, aAllowThirdPartyFixup)
+{
+  gBrowser.loadOneTab(aUrl, {
+                      referrerURI: aReferrer,
+                      charset: aCharset,
+                      postData: aPostData,
+                      inBackground: false,
+                      allowThirdPartyFixup: aAllowThirdPartyFixup});
+}
+
+var gLastOpenDirectory = {
+  _lastDir: null,
+  get path() {
+    if (!this._lastDir || !this._lastDir.exists()) {
+      try {
+        this._lastDir = gPrefService.getComplexValue("browser.open.lastDir",
+                                                     Ci.nsILocalFile);
+        if (!this._lastDir.exists())
+          this._lastDir = null;
+      }
+      catch(e) {}
+    }
+    return this._lastDir;
+  },
+  set path(val) {
+    try {
+      if (!val || !val.isDirectory())
+        return;
+    } catch(e) {
+      return;
+    }
+    this._lastDir = val.clone();
+
+    // Don't save the last open directory pref inside the Private Browsing mode
+    if (!PrivateBrowsingUtils.isWindowPrivate(window))
+      gPrefService.setComplexValue("browser.open.lastDir", Ci.nsILocalFile,
+                                   this._lastDir);
+  },
+  reset: function() {
+    this._lastDir = null;
+  }
+};
+
+function BrowserOpenFileWindow()
+{
+  // Get filepicker component.
+  try {
+    const nsIFilePicker = Ci.nsIFilePicker;
+    let fp = Cc["@mozilla.org/filepicker;1"].createInstance(nsIFilePicker);
+    let fpCallback = function fpCallback_done(aResult) {
+      if (aResult == nsIFilePicker.returnOK) {
+        try {
+          if (fp.file) {
+            gLastOpenDirectory.path =
+              fp.file.parent.QueryInterface(Ci.nsILocalFile);
+          }
+        } catch (ex) {
+        }
+        openUILinkIn(fp.fileURL.spec, "current");
+      }
+    };
+
+    fp.init(window, gNavigatorBundle.getString("openFile"),
+            nsIFilePicker.modeOpen);
+    fp.appendFilters(nsIFilePicker.filterAll | nsIFilePicker.filterText |
+                     nsIFilePicker.filterImages | nsIFilePicker.filterXML |
+                     nsIFilePicker.filterHTML);
+    fp.displayDirectory = gLastOpenDirectory.path;
+    fp.open(fpCallback);
+  } catch (ex) {
+  }
+}
+
+function BrowserCloseTabOrWindow() {
+#ifdef XP_MACOSX
+  // If we're not a browser window, just close the window
+  if (window.location.href != getBrowserURL()) {
+    closeWindow(true);
+    return;
+  }
+#endif
+
+  // If the current tab is the last one, this will close the window.
+  gBrowser.removeCurrentTab({animate: true});
+}
+
+function BrowserTryToCloseWindow()
+{
+  if (WindowIsClosing())
+    window.close();     // WindowIsClosing does all the necessary checks
+}
+
+function loadURI(uri, referrer, postData, allowThirdPartyFixup, referrerPolicy,
+                 originPrincipal, forceAboutBlankViewerInCurrent,
+                 triggeringPrincipal) {
+  if (postData === undefined)
+    postData = null;
+
+  var flags = nsIWebNavigation.LOAD_FLAGS_NONE;
+  if (allowThirdPartyFixup) {
+    flags |= nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+    flags |= nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+  }
+
+  try {
+    gBrowser.loadURIWithFlags(uri, {
+                              flags: flags,
+                              referrerURI: referrer,
+                              referrerPolicy: referrerPolicy,
+                              postData: postData,
+                              originPrincipal: originPrincipal,
+                              triggeringPrincipal: triggeringPrincipal,
+                              forceAboutBlankViewerInCurrent: forceAboutBlankViewerInCurrent,
+                              });
+  } catch (e) {}
+}
+
+/**
+ * Given a urlbar value, discerns between URIs, keywords and aliases.
+ *
+ * @param url
+ *        The urlbar value.
+ * @param callback (optional, deprecated)
+ *        The callback function invoked when done. This parameter is
+ *        deprecated, please use the Promise that is returned.
+ *
+ * @return Promise<{ postData, url, mayInheritPrincipal }>
+ */
+function getShortcutOrURIAndPostData(url, callback = null) {
+  if (callback) {
+    Deprecated.warning("Please use the Promise returned by " +
+                       "getShortcutOrURIAndPostData() instead of passing a " +
+                       "callback",
+                       "https://bugzilla.mozilla.org/show_bug.cgi?id=1100294");
+  }
+
+  return Task.spawn(function* () {
+    let mayInheritPrincipal = false;
+    let postData = null;
+    let shortcutURL = null;
+    let keyword = url;
+    let param = "";
+
+    let offset = url.indexOf(" ");
+    if (offset > 0) {
+      keyword = url.substr(0, offset);
+      param = url.substr(offset + 1);
+    }
+
+    let engine = Services.search.getEngineByAlias(keyword);
+    if (engine) {
+      let submission = engine.getSubmission(param, null, "keyword");
+      postData = submission.postData;
+      return { postData: submission.postData, url: submission.uri.spec,
+               mayInheritPrincipal };
+    }
+
+    let entry = yield PlacesUtils.keywords.fetch(keyword);
+    if (entry) {
+      shortcutURL = entry.url.href;
+      postData = entry.postData;
+    }
+
+    if (!shortcutURL) {
+      return { postData, url, mayInheritPrincipal };
+    }
+
+    let escapedPostData = "";
+    if (postData)
+      escapedPostData = unescape(postData);
+
+    if (/%s/i.test(shortcutURL) || /%s/i.test(escapedPostData)) {
+      let charset = "";
+      const re = /^(.*)\&mozcharset=([a-zA-Z][_\-a-zA-Z0-9]+)\s*$/;
+      let matches = shortcutURL.match(re);
+
+      if (matches) {
+        [, shortcutURL, charset] = matches;
+      } else {
+        let uri;
+        try {
+          // makeURI() throws if URI is invalid.
+          uri = makeURI(shortcutURL);
+        } catch (ex) {}
+
+        if (uri) {
+          // Try to get the saved character-set.
+          // Will return an empty string if character-set is not found.
+          charset = yield PlacesUtils.getCharsetForURI(uri);
+        }
+      }
+
+      // encodeURIComponent produces UTF-8, and cannot be used for other charsets.
+      // escape() works in those cases, but it doesn't uri-encode +, @, and /.
+      // Therefore we need to manually replace these ASCII characters by their
+      // encodeURIComponent result, to match the behavior of nsEscape() with
+      // url_XPAlphas
+      let encodedParam = "";
+      if (charset && charset != "UTF-8")
+        encodedParam = escape(convertFromUnicode(charset, param)).
+                       replace(/[+@\/]+/g, encodeURIComponent);
+      else // Default charset is UTF-8
+        encodedParam = encodeURIComponent(param);
+
+      shortcutURL = shortcutURL.replace(/%s/g, encodedParam).replace(/%S/g, param);
+
+      if (/%s/i.test(escapedPostData)) // POST keyword
+        postData = getPostDataStream(escapedPostData, param, encodedParam,
+                                     "application/x-www-form-urlencoded");
+
+      // This URL came from a bookmark, so it's safe to let it inherit the current
+      // document's principal.
+      mayInheritPrincipal = true;
+
+      return { postData, url: shortcutURL, mayInheritPrincipal };
+    }
+
+    if (param) {
+      // This keyword doesn't take a parameter, but one was provided. Just return
+      // the original URL.
+      postData = null;
+
+      return { postData, url, mayInheritPrincipal };
+    }
+
+    // This URL came from a bookmark, so it's safe to let it inherit the current
+    // document's principal.
+    mayInheritPrincipal = true;
+
+    return { postData, url: shortcutURL, mayInheritPrincipal };
+  }).then(data => {
+    if (callback) {
+      callback(data);
+    }
+
+    return data;
+  });
+}
+
+function getPostDataStream(aStringData, aKeyword, aEncKeyword, aType) {
+  var dataStream = Cc["@mozilla.org/io/string-input-stream;1"].
+                   createInstance(Ci.nsIStringInputStream);
+  aStringData = aStringData.replace(/%s/g, aEncKeyword).replace(/%S/g, aKeyword);
+  dataStream.data = aStringData;
+
+  var mimeStream = Cc["@mozilla.org/network/mime-input-stream;1"].
+                   createInstance(Ci.nsIMIMEInputStream);
+  mimeStream.addHeader("Content-Type", aType);
+  mimeStream.addContentLength = true;
+  mimeStream.setData(dataStream);
+  return mimeStream.QueryInterface(Ci.nsIInputStream);
+}
+
+function getLoadContext() {
+  return window.QueryInterface(Ci.nsIInterfaceRequestor)
+               .getInterface(Ci.nsIWebNavigation)
+               .QueryInterface(Ci.nsILoadContext);
+}
+
+function readFromClipboard()
+{
+  var url;
+
+  try {
+    // Create transferable that will transfer the text.
+    var trans = Components.classes["@mozilla.org/widget/transferable;1"]
+                          .createInstance(Components.interfaces.nsITransferable);
+    trans.init(getLoadContext());
+
+    trans.addDataFlavor("text/unicode");
+
+    // If available, use selection clipboard, otherwise global one
+    if (Services.clipboard.supportsSelectionClipboard())
+      Services.clipboard.getData(trans, Services.clipboard.kSelectionClipboard);
+    else
+      Services.clipboard.getData(trans, Services.clipboard.kGlobalClipboard);
+
+    var data = {};
+    var dataLen = {};
+    trans.getTransferData("text/unicode", data, dataLen);
+
+    if (data) {
+      data = data.value.QueryInterface(Components.interfaces.nsISupportsString);
+      url = data.data.substring(0, dataLen.value / 2);
+    }
+  } catch (ex) {
+  }
+
+  return url;
+}
+
+function BrowserViewSourceOfDocument(aArgsOrDocument)
+{
+  let args;
+
+  if (aArgsOrDocument instanceof Document) {
+    let doc = aArgsOrDocument;
+
+    let requestor = doc.defaultView
+                       .QueryInterface(Ci.nsIInterfaceRequestor);
+    let browser = requestor.getInterface(Ci.nsIWebNavigation)
+                           .QueryInterface(Ci.nsIDocShell)
+                           .chromeEventHandler;
+    let outerWindowID = requestor.getInterface(Ci.nsIDOMWindowUtils)
+                                 .outerWindowID;
+    let URL = browser.currentURI.spec;
+    args = { browser, outerWindowID, URL };
+  } else {
+    args = aArgsOrDocument;
+  }
+
+  let viewInternal = () => {
+    top.gViewSourceUtils.viewSource(args);
+  }
+
+  // Check if external view source is enabled.  If so, try it.  If it fails,
+  // fallback to internal view source.
+  if (Services.prefs.getBoolPref("view_source.editor.external")) {
+    top.gViewSourceUtils
+       .openInExternalEditor(args, null, null, null, result => {
+      if (!result) {
+        viewInternal();
+      }
+    });
+  } else {
+    // Display using internal view source
+    viewInternal();
+  }
+}
+
+// doc - document to use for source, or null for this window's document
+// initialTab - name of the initial tab to display, or null for the first tab
+// imageElement - image to load in the Media Tab of the Page Info window; can be null/omitted
+function BrowserPageInfo(doc, initialTab, imageElement) {
+  var args = {doc: doc, initialTab: initialTab, imageElement: imageElement};
+  var windows = Services.wm.getEnumerator("Browser:page-info");
+
+  var documentURL = doc ? doc.location : window.content.document.location;
+
+  // Check for windows matching the url
+  while (windows.hasMoreElements()) {
+    var currentWindow = windows.getNext();
+    if (currentWindow.document.documentElement.getAttribute("relatedUrl") == documentURL) {
+      currentWindow.focus();
+      currentWindow.resetPageInfo(args);
+      return currentWindow;
+    }
+  }
+
+  // We didn't find a matching window, so open a new one.
+  return openDialog("chrome://browser/content/pageinfo/pageInfo.xul", "",
+                    "chrome,toolbar,dialog=no,resizable", args);
+}
+
+function URLBarSetURI(aURI) {
+  var value = gBrowser.userTypedValue;
+  var valid = false;
+
+  if (value == null) {
+    let uri = aURI || gBrowser.currentURI;
+    // Strip off "wyciwyg://" and passwords for the location bar
+    try {
+      uri = Services.uriFixup.createExposableURI(uri);
+    } catch (e) {}
+
+    // Replace initial page URIs with an empty string
+    // only if there's no opener (bug 370555).
+    // Bug 863515 - Make content.opener checks work in electrolysis.
+    if (gInitialPages.indexOf(uri.spec) != -1)
+      value = !gMultiProcessBrowser && content.opener ? uri.spec : "";
+    else
+      value = losslessDecodeURI(uri);
+
+    valid = !isBlankPageURL(uri.spec);
+  }
+
+  let isDifferentValidValue = valid && value != gURLBar.value;
+  gURLBar.value = value;
+  gURLBar.valueIsTyped = !valid;
+  if (isDifferentValidValue) {
+    gURLBar.selectionStart = gURLBar.selectionEnd = 0;
+  }
+
+  SetPageProxyState(valid ? "valid" : "invalid");
+}
+
+function losslessDecodeURI(aURI) {
+  let scheme = aURI.scheme;
+  let decodeASCIIOnly = !(/(https|http|file|ftp)/i.test(scheme));
+  
+  var value = aURI.spec;
+  
+  // Try to decode as UTF-8 if there's no encoding sequence that we would break.
+  if (!/%25(?:3B|2F|3F|3A|40|26|3D|2B|24|2C|23)/i.test(value)) {
+    if (decodeASCIIOnly) {
+      // This only decodes ASCII characters (hex) 20-7e, except 25 (%).
+      // This avoids both cases stipulated below (%-related issues, and \r, \n
+      // and \t, which would be %0d, %0a and %09, respectively) as well as any
+      // non-US-ascii characters.
+      value = value.replace(/%(2[0-4]|2[6-9a-f]|[3-6][0-9a-f]|7[0-9a-e])/g, decodeURI);
+    } else {
+      try {
+        value = decodeURI(value)
+                  // 1. decodeURI decodes %25 to %, which creates unintended
+                  //    encoding sequences. Re-encode it, unless it's part of
+                  //    a sequence that survived decodeURI, i.e. one for:
+                  //    ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '#'
+                  //    (RFC 3987 section 3.2)
+                  // 2. Re-encode whitespace so that it doesn't get eaten away
+                  //    by the location bar (bug 410726).
+                  .replace(/%(?!3B|2F|3F|3A|40|26|3D|2B|24|2C|23)|[\r\n\t]/ig,
+                           encodeURIComponent);
+      } catch (e) {}
+    }
+  }
+  
+  // Encode invisible characters (C0/C1 control characters, U+007F [DEL],
+  // U+00A0 [no-break space], line and paragraph separator,
+  // object replacement character) (bug 452979, bug 909264)
+  value = value.replace(/[\u0000-\u001f\u007f-\u00a0\u2028\u2029\ufffc]/g,
+                        encodeURIComponent);
+
+  // Encode default ignorable characters (bug 546013)
+  // except ZWNJ (U+200C) and ZWJ (U+200D) (bug 582186).
+  // This includes all bidirectional formatting characters.
+  // (RFC 3987 sections 3.2 and 4.1 paragraph 6)
+  value = value.replace(/[\u00ad\u034f\u115f-\u1160\u17b4-\u17b5\u180b-\u180d\u200b\u200e-\u200f\u202a-\u202e\u2060-\u206f\u3164\ufe00-\ufe0f\ufeff\uffa0\ufff0-\ufff8]|\ud834[\udd73-\udd7a]|[\udb40-\udb43][\udc00-\udfff]/g,
+                        encodeURIComponent);
+  return value;
+}
+
+function UpdateUrlbarSearchSplitterState()
+{
+  var splitter = document.getElementById("urlbar-search-splitter");
+  var urlbar = document.getElementById("urlbar-container");
+  var searchbar = document.getElementById("search-container");
+  var stop = document.getElementById("stop-button");
+
+  var ibefore = null;
+  if (urlbar && searchbar) {
+    if (urlbar.nextSibling == searchbar ||
+        urlbar.getAttribute("combined") &&
+        stop && stop.nextSibling == searchbar)
+      ibefore = searchbar;
+    else if (searchbar.nextSibling == urlbar)
+      ibefore = urlbar;
+  }
+
+  if (ibefore) {
+    if (!splitter) {
+      splitter = document.createElement("splitter");
+      splitter.id = "urlbar-search-splitter";
+      splitter.setAttribute("resizebefore", "flex");
+      splitter.setAttribute("resizeafter", "flex");
+      splitter.setAttribute("skipintoolbarset", "true");
+      splitter.className = "chromeclass-toolbar-additional";
+    }
+    urlbar.parentNode.insertBefore(splitter, ibefore);
+  } else if (splitter)
+    splitter.parentNode.removeChild(splitter);
+}
+
+function setUrlAndSearchBarWidthForConditionalForwardButton() {
+  // Workaround for bug 694084: Showing/hiding the conditional forward button resizes
+  // the search bar when the url/search bar splitter hasn't been used.
+  var urlbarContainer = document.getElementById("urlbar-container");
+  var searchbarContainer = document.getElementById("search-container");
+  if (!urlbarContainer ||
+      !searchbarContainer ||
+      urlbarContainer.hasAttribute("width") ||
+      searchbarContainer.hasAttribute("width") ||
+      urlbarContainer.parentNode != searchbarContainer.parentNode)
+    return;
+  urlbarContainer.style.width = searchbarContainer.style.width = "";
+  var urlbarWidth = urlbarContainer.clientWidth;
+  var searchbarWidth = searchbarContainer.clientWidth;
+  urlbarContainer.style.width = urlbarWidth + "px";
+  searchbarContainer.style.width = searchbarWidth + "px";
+}
+
+function UpdatePageProxyState()
+{
+  if (gURLBar && gURLBar.value != gLastValidURLStr)
+    SetPageProxyState("invalid");
+}
+
+function SetPageProxyState(aState)
+{
+  BookmarkingUI.onPageProxyStateChanged(aState);
+
+  if (!gURLBar)
+    return;
+
+  if (!gProxyFavIcon)
+    gProxyFavIcon = document.getElementById("page-proxy-favicon");
+
+  gURLBar.setAttribute("pageproxystate", aState);
+  gProxyFavIcon.setAttribute("pageproxystate", aState);
+
+  // the page proxy state is set to valid via OnLocationChange, which
+  // gets called when we switch tabs.
+  if (aState == "valid") {
+    gLastValidURLStr = gURLBar.value;
+    gURLBar.addEventListener("input", UpdatePageProxyState, false);
+    PageProxySetIcon(gBrowser.getIcon());
+  } else if (aState == "invalid") {
+    gURLBar.removeEventListener("input", UpdatePageProxyState, false);
+    PageProxyClearIcon();
+  }
+}
+
+function PageProxySetIcon (aURL)
+{
+  if (!gProxyFavIcon)
+    return;
+
+  if (gBrowser.selectedBrowser.contentDocument instanceof ImageDocument) {
+    // PageProxyClearIcon();
+    gProxyFavIcon.setAttribute("src", "chrome://browser/skin/imagedocument.png");
+    return;
+  }
+
+  if (!aURL)
+    PageProxyClearIcon();
+  else if (gProxyFavIcon.getAttribute("src") != aURL)
+    gProxyFavIcon.setAttribute("src", aURL);
+}
+
+function PageProxyClearIcon ()
+{
+  gProxyFavIcon.removeAttribute("src");
+}
+
+
+function PageProxyClickHandler(aEvent)
+{
+  if (aEvent.button == 1 && gPrefService.getBoolPref("middlemouse.paste"))
+    middleMousePaste(aEvent);
+}
+
+/**
+ *  Handle load of some pages (about:*) so that we can make modifications
+ *  to the DOM for unprivileged pages.
+ */
+function BrowserOnAboutPageLoad(doc) {
+
+  /* === about:home === */
+
+  if (doc.documentURI.toLowerCase() == "about:home") {
+    if (!PrivateBrowsingUtils.isWindowPrivate(window)) {
+      let wrapper = {};
+      Cu.import("resource:///modules/sessionstore/SessionStore.jsm", wrapper);
+      let ss = wrapper.SessionStore;
+      ss.promiseInitialized.then(function() {
+        if (ss.canRestoreLastSession) {
+          doc.getElementById("launcher").setAttribute("session", "true");
+        }
+      }).then(null, function onError(x) {
+        Cu.reportError("Error in SessionStore init while processing 'about:home': " + x);
+      });
+    }
+
+    // Inject search engine and snippets URL.
+    let docElt = doc.documentElement;
+    if (AboutHomeUtils.showKnowYourRights) {
+      docElt.setAttribute("showKnowYourRights", "true");
+      // Set pref to indicate we've shown the notification.
+      let currentVersion = Services.prefs.getIntPref("browser.rights.version");
+      Services.prefs.setBoolPref("browser.rights." + currentVersion + ".shown", true);
+    }
+
+    function updateSearchEngine() {
+      let engine = AboutHomeUtils.defaultSearchEngine;
+      docElt.setAttribute("searchEngineName", engine.name);
+      docElt.setAttribute("searchEnginePostData", engine.postDataString || "");
+      docElt.setAttribute("searchEngineURL", engine.searchURL);
+    }
+    Services.search.init(updateSearchEngine);
+
+    // Listen for the event that's triggered when the user changes search engine.
+    // At this point we simply reload about:home to reflect the change.
+    Services.obs.addObserver(updateSearchEngine, "browser-search-engine-modified", false);
+
+    // Remove the observer when the page is reloaded or closed.
+    doc.defaultView.addEventListener("pagehide", function removeObserver() {
+      doc.defaultView.removeEventListener("pagehide", removeObserver);
+      Services.obs.removeObserver(updateSearchEngine, "browser-search-engine-modified");
+    }, false);
+  }
+
+  /* === about:newtab === */
+  
+  if (doc.documentURI.toLowerCase() == "about:newtab") {
+
+    let docElt = doc.documentElement;
+
+    function updateSearchEngine() {
+      let engine = AboutHomeUtils.defaultSearchEngine;
+      docElt.setAttribute("searchEngineName", engine.name);
+      docElt.setAttribute("searchEnginePostData", engine.postDataString || "");
+      docElt.setAttribute("searchEngineURL", engine.searchURL);
+    }
+    Services.search.init(updateSearchEngine);
+
+    // Listen for the event that's triggered when the user changes search engine.
+    // At this point we simply reload about:newtab to reflect the change.
+    Services.obs.addObserver(updateSearchEngine, "browser-search-engine-modified", false);
+
+    // Remove the observer when the page is reloaded or closed.
+    doc.defaultView.addEventListener("pagehide", function removeObserver() {
+      doc.defaultView.removeEventListener("pagehide", removeObserver);
+      Services.obs.removeObserver(updateSearchEngine, "browser-search-engine-modified");
+    }, false);
+  }
+
+}
+
+/**
+ * Handle command events bubbling up from error page content
+ */
+var BrowserOnClick = {
+  handleEvent: function BrowserOnClick_handleEvent(aEvent) {
+    if (!aEvent.isTrusted || // Don't trust synthetic events
+        aEvent.button == 2 || aEvent.target.localName != "button") {
+      return;
+    }
+
+    let originalTarget = aEvent.originalTarget;
+    let ownerDoc = originalTarget.ownerDocument;
+
+    // If the event came from an ssl error page, it is probably either the "Add
+    // Exception…" or "Get me out of here!" button
+    if (ownerDoc.documentURI.startsWith("about:certerror")) {
+      this.onAboutCertError(originalTarget, ownerDoc);
+    }
+    else if (ownerDoc.documentURI.startsWith("about:neterror")) {
+      this.onAboutNetError(originalTarget, ownerDoc);
+    }
+    else if (ownerDoc.documentURI.toLowerCase() == "about:home") {
+      this.onAboutHome(originalTarget, ownerDoc);
+    }
+  },
+
+  onAboutCertError: function BrowserOnClick_onAboutCertError(aTargetElm, aOwnerDoc) {
+    let elmId = aTargetElm.getAttribute("id");
+    let isTopFrame = (aOwnerDoc.defaultView.parent === aOwnerDoc.defaultView);
+
+    switch (elmId) {
+      case "exceptionDialogButton":
+        let params = { exceptionAdded : false };
+
+        try {
+          switch (Services.prefs.getIntPref("browser.ssl_override_behavior")) {
+            case 2 : // Pre-fetch & pre-populate
+              params.prefetchCert = true;
+            case 1 : // Pre-populate
+              params.location = aOwnerDoc.location.href;
+          }
+        } catch (e) {
+          Components.utils.reportError("Couldn't get ssl_override pref: " + e);
+        }
+
+        window.openDialog('chrome://pippki/content/exceptionDialog.xul',
+                          '','chrome,centerscreen,modal', params);
+
+        // If the user added the exception cert, attempt to reload the page
+        if (params.exceptionAdded) {
+          aOwnerDoc.location.reload();
+        }
+        break;
+
+      case "getMeOutOfHereButton":
+        getMeOutOfHere();
+        break;
+
+      case "technicalContent":
+        break;
+
+      case "expertContent":
+        break;
+
+    }
+  },
+
+  onAboutNetError: function BrowserOnClick_onAboutNetError(aTargetElm, aOwnerDoc) {
+    let elmId = aTargetElm.getAttribute("id");
+    if (elmId != "errorTryAgain" || !/e=netOffline/.test(aOwnerDoc.documentURI))
+      return;
+    Services.io.offline = false;
+  },
+
+  onAboutHome: function BrowserOnClick_onAboutHome(aTargetElm, aOwnerDoc) {
+    let elmId = aTargetElm.getAttribute("id");
+
+    switch (elmId) {
+      case "restorePreviousSession":
+        let ss = Cc["@mozilla.org/browser/sessionstore;1"].
+                 getService(Ci.nsISessionStore);
+        if (ss.canRestoreLastSession) {
+          ss.restoreLastSession();
+        }
+        aOwnerDoc.getElementById("launcher").removeAttribute("session");
+        break;
+
+      case "downloads":
+        BrowserDownloadsUI();
+        break;
+
+      case "bookmarks":
+        PlacesCommandHook.showPlacesOrganizer("AllBookmarks");
+        break;
+
+      case "history":
+        PlacesCommandHook.showPlacesOrganizer("History");
+        break;
+
+      case "addons":
+        BrowserOpenAddonsMgr();
+        break;
+
+      case "sync":
+        openPreferences("paneSync");
+        break;
+
+      case "settings":
+        openPreferences();
+        break;
+    }
+  },
+};
+
+/**
+ * Re-direct the browser to a known-safe page.  This function is
+ * used when, for example, the user browses to a known malware page
+ * and is presented with about:blocked.  The "Get me out of here!"
+ * button should take the user to the default start page so that even
+ * when their own homepage is infected, we can get them somewhere safe.
+ */
+function getMeOutOfHere() {
+  try {
+    let toBlank = Services.prefs.getBoolPref("browser.escape_to_blank");
+    if (toBlank) {
+      content.location = "about:logopage";
+      return;
+    }
+  } catch(e) {
+    Components.utils.reportError("Couldn't get escape pref: " + e);
+  }
+  // Get the start page from the *default* pref branch, not the user's
+  var prefs = Services.prefs.getDefaultBranch(null);
+  var url = BROWSER_NEW_TAB_URL;
+  try {
+    url = prefs.getComplexValue("browser.startup.homepage",
+                                Ci.nsIPrefLocalizedString).data;
+    // If url is a pipe-delimited set of pages, just take the first one.
+    if (url.includes("|"))
+      url = url.split("|")[0];
+  } catch(e) {
+    Components.utils.reportError("Couldn't get homepage pref: " + e);
+  }
+  content.location = url;
+}
+
+function BrowserFullScreen()
+{
+  window.fullScreen = !window.fullScreen;
+}
+
+function onFullScreen() {
+  FullScreen.toggle();
+}
+
+function onMozEnteredDomFullscreen(event) {
+  FullScreen.enterDomFullscreen(event);
+}
+
+function getWebNavigation()
+{
+  return gBrowser.webNavigation;
+}
+
+function BrowserReloadWithFlags(reloadFlags) {
+  
+  // Reset DOS mitigation for auth prompts when user initiates a reload.
+  let browser = gBrowser.selectedBrowser;
+  delete browser.authPromptCounter;
+  
+  /* First, we'll try to use the session history object to reload so
+   * that framesets are handled properly. If we're in a special
+   * window (such as view-source) that has no session history, fall
+   * back on using the web navigation's reload method.
+   */
+
+  var webNav = gBrowser.webNavigation;
+  try {
+    var sh = webNav.sessionHistory;
+    if (sh)
+      webNav = sh.QueryInterface(nsIWebNavigation);
+  } catch (e) {
+  }
+
+  try {
+    webNav.reload(reloadFlags);
+  } catch (e) {
+  }
+}
+
+var PrintPreviewListener = {
+  _printPreviewTab: null,
+  _tabBeforePrintPreview: null,
+
+  getPrintPreviewBrowser: function () {
+    if (!this._printPreviewTab) {
+      this._tabBeforePrintPreview = gBrowser.selectedTab;
+      this._printPreviewTab = gBrowser.loadOneTab("about:blank",
+                                                  { inBackground: false });
+      gBrowser.selectedTab = this._printPreviewTab;
+    }
+    return gBrowser.getBrowserForTab(this._printPreviewTab);
+  },
+  getSourceBrowser: function () {
+    return this._tabBeforePrintPreview ?
+      this._tabBeforePrintPreview.linkedBrowser : gBrowser.selectedBrowser;
+  },
+  getNavToolbox: function () {
+    return gNavToolbox;
+  },
+  onEnter: function () {
+    // We might have accidentally switched tabs since the user invoked print
+    // preview
+    if (gBrowser.selectedTab != this._printPreviewTab) {
+      gBrowser.selectedTab = this._printPreviewTab;
+    }
+    gInPrintPreviewMode = true;
+    this._toggleAffectedChrome();
+  },
+  onExit: function () {
+    gBrowser.selectedTab = this._tabBeforePrintPreview;
+    this._tabBeforePrintPreview = null;
+    gInPrintPreviewMode = false;
+    this._toggleAffectedChrome();
+    gBrowser.removeTab(this._printPreviewTab);
+    this._printPreviewTab = null;
+  },
+  _toggleAffectedChrome: function () {
+    gNavToolbox.collapsed = gInPrintPreviewMode;
+
+    if (gInPrintPreviewMode)
+      this._hideChrome();
+    else
+      this._showChrome();
+
+    if (this._chromeState.sidebarOpen)
+      toggleSidebar(this._sidebarCommand);
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+    updateAppButtonDisplay();
+#endif
+  },
+  _hideChrome: function () {
+    this._chromeState = {};
+
+    var sidebar = document.getElementById("sidebar-box");
+    this._chromeState.sidebarOpen = !sidebar.hidden;
+    this._sidebarCommand = sidebar.getAttribute("sidebarcommand");
+
+    var notificationBox = gBrowser.getNotificationBox();
+    this._chromeState.notificationsOpen = !notificationBox.notificationsHidden;
+    notificationBox.notificationsHidden = true;
+
+    document.getElementById("sidebar").setAttribute("src", "about:blank");
+    var addonBar = document.getElementById("addon-bar");
+    this._chromeState.addonBarOpen = !addonBar.collapsed;
+    addonBar.collapsed = true;
+    gBrowser.updateWindowResizers();
+
+    this._chromeState.findOpen = gFindBarInitialized && !gFindBar.hidden;
+    if (gFindBarInitialized)
+      gFindBar.close();
+
+    var globalNotificationBox = document.getElementById("global-notificationbox");
+    this._chromeState.globalNotificationsOpen = !globalNotificationBox.notificationsHidden;
+    globalNotificationBox.notificationsHidden = true;
+
+    this._chromeState.syncNotificationsOpen = false;
+    var syncNotifications = document.getElementById("sync-notifications");
+    if (syncNotifications) {
+      this._chromeState.syncNotificationsOpen = !syncNotifications.notificationsHidden;
+      syncNotifications.notificationsHidden = true;
+    }
+  },
+  _showChrome: function () {
+    if (this._chromeState.notificationsOpen)
+      gBrowser.getNotificationBox().notificationsHidden = false;
+
+    if (this._chromeState.addonBarOpen) {
+      document.getElementById("addon-bar").collapsed = false;
+      gBrowser.updateWindowResizers();
+    }
+
+    if (this._chromeState.findOpen)
+      gFindBar.open();
+
+    if (this._chromeState.globalNotificationsOpen)
+      document.getElementById("global-notificationbox").notificationsHidden = false;
+
+    if (this._chromeState.syncNotificationsOpen)
+      document.getElementById("sync-notifications").notificationsHidden = false;
+  }
+}
+
+function getMarkupDocumentViewer()
+{
+  return gBrowser.markupDocumentViewer;
+}
+
+// This function is obsolete. Newer code should use <tooltip page="true"/> instead.
+function FillInHTMLTooltip(tipElement)
+{
+  document.getElementById("aHTMLTooltip").fillInPageTooltip(tipElement);
+}
+
+var browserDragAndDrop = {
+  canDropLink: function (aEvent) Services.droppedLinkHandler.canDropLink(aEvent, true),
+
+  dragOver: function (aEvent)
+  {
+    if (this.canDropLink(aEvent)) {
+      aEvent.preventDefault();
+    }
+  },
+
+  dropLinks: function (aEvent, aDisallowInherit) {
+    return Services.droppedLinkHandler.dropLinks(aEvent, aDisallowInherit);
+  }
+};
+
+var homeButtonObserver = {
+  onDrop: function (aEvent)
+    {
+      // disallow setting home pages that inherit the principal
+      let links = browserDragAndDrop.dropLinks(aEvent, true);
+      if (links.length) {
+        setTimeout(openHomeDialog, 0, links.map(link => link.url).join("|"));
+      }
+    },
+
+  onDragOver: function (aEvent)
+    {
+      browserDragAndDrop.dragOver(aEvent);
+      aEvent.dropEffect = "link";
+    },
+  onDragExit: function (aEvent)
+    {
+    }
+}
+
+function openHomeDialog(aURL)
+{
+  var promptTitle = gNavigatorBundle.getString("droponhometitle");
+  var promptMsg;
+  if (aURL.includes("|")) {
+    promptMsg = gNavigatorBundle.getString("droponhomemsgMultiple");
+  } else {
+    promptMsg = gNavigatorBundle.getString("droponhomemsg");
+  }
+
+  var pressedVal  = Services.prompt.confirmEx(window, promptTitle, promptMsg,
+                          Services.prompt.STD_YES_NO_BUTTONS,
+                          null, null, null, null, {value:0});
+
+  if (pressedVal == 0) {
+    try {
+      var homepageStr = Components.classes["@mozilla.org/supports-string;1"]
+                        .createInstance(Components.interfaces.nsISupportsString);
+      homepageStr.data = aURL;
+      gPrefService.setComplexValue("browser.startup.homepage",
+                                   Components.interfaces.nsISupportsString, homepageStr);
+    } catch (ex) {
+      dump("Failed to set the home page.\n"+ex+"\n");
+    }
+  }
+}
+
+var bookmarksButtonObserver = {
+  onDrop: function (aEvent)
+  {
+    let name = { };
+    let url = browserDragAndDrop.drop(aEvent, name);
+    try {
+      PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                       , type: "bookmark"
+                                       , uri: makeURI(url)
+                                       , title: name
+                                       , hiddenRows: [ "description"
+                                                     , "location"
+                                                     , "loadInSidebar"
+                                                     , "keyword" ]
+                                       }, window);
+    } catch(ex) { }
+  },
+
+  onDragOver: function (aEvent)
+  {
+    browserDragAndDrop.dragOver(aEvent);
+    aEvent.dropEffect = "link";
+  },
+
+  onDragExit: function (aEvent)
+  {
+  }
+}
+
+var newTabButtonObserver = {
+  onDragOver: function (aEvent)
+  {
+    browserDragAndDrop.dragOver(aEvent);
+  },
+
+  onDragExit: function (aEvent)
+  {
+  },
+
+  onDrop: function (aEvent)
+  {
+    let links = browserDragAndDrop.dropLinks(aEvent);
+    Task.spawn(function*() {
+      for (let link of links) {
+        let data = yield getShortcutOrURIAndPostData(link.url);
+        if (data.url) {
+          // allow third-party services to fixup this URL
+          openNewTabWith(data.url, null, data.postData, aEvent, true);
+        }
+      }
+    });
+  }
+}
+
+var newWindowButtonObserver = {
+  onDragOver: function (aEvent)
+  {
+    browserDragAndDrop.dragOver(aEvent);
+  },
+  onDragExit: function (aEvent)
+  {
+  },
+  onDrop: function (aEvent)
+  {
+    let links = browserDragAndDrop.dropLinks(aEvent);
+    Task.spawn(function*() {
+      for (let link of links) {
+        let data = yield getShortcutOrURIAndPostData(link.url);
+        if (data.url) {
+          // allow third-party services to fixup this URL
+          openNewWindowWith(data.url, null, data.postData, true);
+        }
+      }
+    });
+  }
+}
+
+const DOMLinkHandler = {
+  handleEvent: function (event) {
+    switch (event.type) {
+      case "DOMLinkAdded":
+        this.onLinkAdded(event);
+        break;
+    }
+  },
+  getLinkIconURI: function(aLink) {
+    let targetDoc = aLink.ownerDocument;
+    var uri = makeURI(aLink.href, targetDoc.characterSet);
+
+    // Verify that the load of this icon is legal.
+    // Some error or special pages can load their favicon.
+    // To be on the safe side, only allow chrome:// favicons.
+    var isAllowedPage = [
+      /^about:neterror\?/,
+      /^about:blocked\?/,
+      /^about:certerror\?/,
+      /^about:home$/,
+    ].some(function (re) re.test(targetDoc.documentURI));
+
+    if (!isAllowedPage || !uri.schemeIs("chrome")) {
+      var ssm = Services.scriptSecurityManager;
+      try {
+        ssm.checkLoadURIWithPrincipal(targetDoc.nodePrincipal, uri,
+                                      Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+      } catch(e) {
+        return null;
+      }
+    }
+
+    try {
+      var contentPolicy = Cc["@mozilla.org/layout/content-policy;1"].
+                          getService(Ci.nsIContentPolicy);
+    } catch(e) {
+      return null; // Refuse to load if we can't do a security check.
+    }
+
+    // Security says okay, now ask content policy
+    if (contentPolicy.shouldLoad(Ci.nsIContentPolicy.TYPE_IMAGE,
+                                 uri, targetDoc.documentURIObject,
+                                 aLink, aLink.type, null)
+                                 != Ci.nsIContentPolicy.ACCEPT)
+      return null;
+
+    try {
+      uri.userPass = "";
+    } catch(e) {
+      // some URIs are immutable
+    }
+    return uri;
+  },
+  onLinkAdded: function (event) {
+    var link = event.originalTarget;
+    var rel = link.rel && link.rel.toLowerCase();
+    if (!link || !link.ownerDocument || !rel || !link.href)
+      return;
+
+    var feedAdded = false;
+    var iconAdded = false;
+    var searchAdded = false;
+    var rels = {};
+    for (let relString of rel.split(/\s+/))
+      rels[relString] = true;
+
+    for (let relVal in rels) {
+      switch (relVal) {
+        case "feed":
+        case "alternate":
+          if (!feedAdded) {
+            if (!rels.feed && rels.alternate && rels.stylesheet)
+              break;
+
+            if (isValidFeed(link, link.ownerDocument.nodePrincipal, "feed" in rels)) {
+              FeedHandler.addFeed(link, link.ownerDocument);
+              feedAdded = true;
+            }
+          }
+          break;
+        case "icon":
+          if (!iconAdded) {
+            if (!gPrefService.getBoolPref("browser.chrome.site_icons"))
+              break;
+
+            var uri = this.getLinkIconURI(link);
+            if (!uri)
+              break;
+
+            if (gBrowser.isFailedIcon(uri))
+              break;
+
+            var browserIndex = gBrowser.getBrowserIndexForDocument(link.ownerDocument);
+            // no browser? no favicon.
+            if (browserIndex == -1)
+              break;
+
+            let tab = gBrowser.tabs[browserIndex];
+            gBrowser.setIcon(tab, uri.spec, link.ownerDocument.nodePrincipal);
+            iconAdded = true;
+          }
+          break;
+        case "search":
+          if (!searchAdded) {
+            var type = link.type && link.type.toLowerCase();
+            type = type.replace(/^\s+|\s*(?:;.*)?$/g, "");
+
+            if (type == "application/opensearchdescription+xml" && link.title &&
+                /^(?:https?|ftp):/i.test(link.href) &&
+                !PrivateBrowsingUtils.isWindowPrivate(window)) {
+              var engine = { title: link.title, href: link.href };
+              Services.search.init(function () {
+                BrowserSearch.addEngine(engine, link.ownerDocument);
+              });
+              searchAdded = true;
+            }
+          }
+          break;
+      }
+    }
+  }
+}
+
+const BrowserSearch = {
+  addEngine: function(engine, targetDoc) {
+    if (!this.searchBar)
+      return;
+
+    var browser = gBrowser.getBrowserForDocument(targetDoc);
+    // ignore search engines from subframes (see bug 479408)
+    if (!browser)
+      return;
+
+    // Check to see whether we've already added an engine with this title
+    if (browser.engines) {
+      if (browser.engines.some(function (e) e.title == engine.title))
+        return;
+    }
+
+    // Append the URI and an appropriate title to the browser data.
+    // Use documentURIObject in the check for shouldLoadFavIcon so that we
+    // do the right thing with about:-style error pages.  Bug 453442
+    var iconURL = null;
+    if (gBrowser.shouldLoadFavIcon(targetDoc.documentURIObject))
+      iconURL = targetDoc.documentURIObject.prePath + "/favicon.ico";
+
+    var hidden = false;
+    // If this engine (identified by title) is already in the list, add it
+    // to the list of hidden engines rather than to the main list.
+    // XXX This will need to be changed when engines are identified by URL;
+    // see bug 335102.
+    if (Services.search.getEngineByName(engine.title))
+      hidden = true;
+
+    var engines = (hidden ? browser.hiddenEngines : browser.engines) || [];
+
+    engines.push({ uri: engine.href,
+                   title: engine.title,
+                   icon: iconURL });
+
+    if (hidden)
+      browser.hiddenEngines = engines;
+    else
+      browser.engines = engines;
+  },
+
+  /**
+   * Gives focus to the search bar, if it is present on the toolbar, or loads
+   * the default engine's search form otherwise. For Mac, opens a new window
+   * or focuses an existing window, if necessary.
+   */
+  webSearch: function BrowserSearch_webSearch() {
+#ifdef XP_MACOSX
+    if (window.location.href != getBrowserURL()) {
+      var win = getTopWin();
+      if (win) {
+        // If there's an open browser window, it should handle this command
+        win.focus();
+        win.BrowserSearch.webSearch();
+      } else {
+        // If there are no open browser windows, open a new one
+        var observer = function observer(subject, topic, data) {
+          if (subject == win) {
+            BrowserSearch.webSearch();
+            Services.obs.removeObserver(observer, "browser-delayed-startup-finished");
+          }
+        }
+        win = window.openDialog(getBrowserURL(), "_blank",
+                                "chrome,all,dialog=no", "about:blank");
+        Services.obs.addObserver(observer, "browser-delayed-startup-finished", false);
+      }
+      return;
+    }
+#endif
+    var searchBar = this.searchBar;
+    if (searchBar && window.fullScreen)
+      FullScreen.showNavToolbox();
+    if (searchBar)
+      searchBar.select();
+    if (!searchBar || document.activeElement != searchBar.textbox.inputField)
+      openUILinkIn(Services.search.defaultEngine.searchForm, "current");
+  },
+
+  /**
+   * Loads a search results page, given a set of search terms. Uses the current
+   * engine if the search bar is visible, or the default engine otherwise.
+   *
+   * @param searchText
+   *        The search terms to use for the search.
+   *
+   * @param useNewTab
+   *        Boolean indicating whether or not the search should load in a new
+   *        tab.
+   *
+   * @param purpose [optional]
+   *        A string meant to indicate the context of the search request. This
+   *        allows the search service to provide a different nsISearchSubmission
+   *        depending on e.g. where the search is triggered in the UI.
+   *
+   * @return string Name of the search engine used to perform a search or null
+   *         if a search was not performed.
+   */
+  loadSearch: function BrowserSearch_search(searchText, useNewTab, purpose) {
+    var engine;
+
+    // If the search bar is visible, use the current engine, otherwise, fall
+    // back to the default engine.
+    if (isElementVisible(this.searchBar))
+      engine = Services.search.currentEngine;
+    else
+      engine = Services.search.defaultEngine;
+
+    var submission = engine.getSubmission(searchText, null, purpose); // HTML response
+
+    // getSubmission can return null if the engine doesn't have a URL
+    // with a text/html response type.  This is unlikely (since
+    // SearchService._addEngineToStore() should fail for such an engine),
+    // but let's be on the safe side.
+    if (!submission) {
+      return null;
+    }
+
+    let inBackground = Services.prefs.getBoolPref("browser.search.context.loadInBackground");
+    openLinkIn(submission.uri.spec,
+               useNewTab ? "tab" : "current",
+               { postData: submission.postData,
+                 inBackground: inBackground,
+                 relatedToCurrent: true });
+
+    return engine.name;
+  },
+
+  /**
+   * Perform a search initiated from the context menu.
+   *
+   * This should only be called from the context menu. See
+   * BrowserSearch.loadSearch for the preferred API.
+   */
+  loadSearchFromContext: function (terms) {
+    let engine = BrowserSearch.loadSearch(terms, true, "contextmenu");
+  },
+
+  /**
+   * Returns the search bar element if it is present in the toolbar, null otherwise.
+   */
+  get searchBar() {
+    return document.getElementById("searchbar");
+  },
+
+  loadAddEngines: function BrowserSearch_loadAddEngines() {
+    var newWindowPref = gPrefService.getIntPref("browser.link.open_newwindow");
+    var where = newWindowPref == 3 ? "tab" : "window";
+    var searchEnginesURL = formatURL("browser.search.searchEnginesURL", true);
+    openUILinkIn(searchEnginesURL, where);
+  },
+};
+
+XPCOMUtils.defineConstant(this, "BrowserSearch", BrowserSearch);
+
+function FillHistoryMenu(aParent) {
+  // Lazily add the hover listeners on first showing and never remove them
+  if (!aParent.hasStatusListener) {
+    // Show history item's uri in the status bar when hovering, and clear on exit
+    aParent.addEventListener("DOMMenuItemActive", function(aEvent) {
+      // Only the current page should have the checked attribute, so skip it
+      if (!aEvent.target.hasAttribute("checked"))
+        XULBrowserWindow.setOverLink(aEvent.target.getAttribute("uri"));
+    }, false);
+    aParent.addEventListener("DOMMenuItemInactive", function() {
+      XULBrowserWindow.setOverLink("");
+    }, false);
+
+    aParent.hasStatusListener = true;
+  }
+
+  // Remove old entries if any
+  var children = aParent.childNodes;
+  for (var i = children.length - 1; i >= 0; --i) {
+    if (children[i].hasAttribute("index"))
+      aParent.removeChild(children[i]);
+  }
+
+  var webNav = gBrowser.webNavigation;
+  var sessionHistory = webNav.sessionHistory;
+
+  var count = sessionHistory.count;
+  if (count <= 1) // don't display the popup for a single item
+    return false;
+
+  const MAX_HISTORY_MENU_ITEMS = 15;
+  var index = sessionHistory.index;
+  var half_length = Math.floor(MAX_HISTORY_MENU_ITEMS / 2);
+  var start = Math.max(index - half_length, 0);
+  var end = Math.min(start == 0 ? MAX_HISTORY_MENU_ITEMS : index + half_length + 1, count);
+  if (end == count)
+    start = Math.max(count - MAX_HISTORY_MENU_ITEMS, 0);
+
+  var tooltipBack = gNavigatorBundle.getString("tabHistory.goBack");
+  var tooltipCurrent = gNavigatorBundle.getString("tabHistory.current");
+  var tooltipForward = gNavigatorBundle.getString("tabHistory.goForward");
+
+  for (var j = end - 1; j >= start; j--) {
+    let item = document.createElement("menuitem");
+    let entry = sessionHistory.getEntryAtIndex(j, false);
+    let uri = entry.URI.spec;
+
+    item.setAttribute("uri", uri);
+    item.setAttribute("label", entry.title || uri);
+    item.setAttribute("index", j);
+
+    if (j != index) {
+      PlacesUtils.favicons.getFaviconURLForPage(entry.URI, function (aURI) {
+        if (aURI) {
+          let iconURL = PlacesUtils.favicons.getFaviconLinkForIcon(aURI).spec;
+          item.style.listStyleImage = "url(" + iconURL + ")";
+        }
+      });
+    }
+
+    if (j < index) {
+      item.className = "unified-nav-back menuitem-iconic menuitem-with-favicon";
+      item.setAttribute("tooltiptext", tooltipBack);
+    } else if (j == index) {
+      item.setAttribute("type", "radio");
+      item.setAttribute("checked", "true");
+      item.className = "unified-nav-current";
+      item.setAttribute("tooltiptext", tooltipCurrent);
+    } else {
+      item.className = "unified-nav-forward menuitem-iconic menuitem-with-favicon";
+      item.setAttribute("tooltiptext", tooltipForward);
+    }
+
+    aParent.appendChild(item);
+  }
+  return true;
+}
+
+function addToUrlbarHistory(aUrlToAdd) {
+  if (!PrivateBrowsingUtils.isWindowPrivate(window) &&
+      aUrlToAdd &&
+      !aUrlToAdd.includes(" ") &&
+      !/[\x00-\x1F]/.test(aUrlToAdd))
+    PlacesUIUtils.markPageAsTyped(aUrlToAdd);
+}
+
+function toJavaScriptConsole()
+{
+  toOpenWindowByType("global:console", "chrome://global/content/console.xul");
+}
+
+function BrowserDownloadsUI()
+{
+  if (PrivateBrowsingUtils.isWindowPrivate(window)) {
+    openUILinkIn("about:downloads", "tab");
+  } else {
+    PlacesCommandHook.showPlacesOrganizer("Downloads");
+  }
+}
+
+function toOpenWindowByType(inType, uri, features)
+{
+  var topWindow = Services.wm.getMostRecentWindow(inType);
+
+  if (topWindow)
+    topWindow.focus();
+  else if (features)
+    window.open(uri, "_blank", features);
+  else
+    window.open(uri, "_blank", "chrome,extrachrome,menubar,resizable,scrollbars,status,toolbar");
+}
+
+function OpenBrowserWindow(options)
+{
+  function newDocumentShown(doc, topic, data) {
+    if (topic == "document-shown" &&
+        doc != document &&
+        doc.defaultView == win) {
+      Services.obs.removeObserver(newDocumentShown, "document-shown");
+    }
+  };
+  Services.obs.addObserver(newDocumentShown, "document-shown", false);
+
+  var charsetArg = new String();
+  var handler = Components.classes["@mozilla.org/browser/clh;1"]
+                          .getService(Components.interfaces.nsIBrowserHandler);
+  var defaultArgs = handler.defaultArgs;
+  var wintype = document.documentElement.getAttribute('windowtype');
+
+  var extraFeatures = "";
+  if (options && options.private) {
+    extraFeatures = ",private";
+    if (!PrivateBrowsingUtils.permanentPrivateBrowsing) {
+      // Force the new window to load about:privatebrowsing instead of the default home page
+      defaultArgs = "about:privatebrowsing";
+    }
+  } else {
+    extraFeatures = ",non-private";
+  }
+
+  // if and only if the current window is a browser window and it has a document with a character
+  // set, then extract the current charset menu setting from the current document and use it to
+  // initialize the new browser window...
+  var win;
+  if (window && (wintype == "navigator:browser") && window.content && window.content.document)
+  {
+    var DocCharset = window.content.document.characterSet;
+    charsetArg = "charset="+DocCharset;
+
+    //we should "inherit" the charset menu setting in a new window
+    win = window.openDialog("chrome://browser/content/", "_blank", "chrome,all,dialog=no" + extraFeatures, defaultArgs, charsetArg);
+  }
+  else // forget about the charset information.
+  {
+    win = window.openDialog("chrome://browser/content/", "_blank", "chrome,all,dialog=no" + extraFeatures, defaultArgs);
+  }
+
+  return win;
+}
+
+var gCustomizeSheet = false;
+function BrowserCustomizeToolbar() {
+  // Disable the toolbar context menu items
+  var menubar = document.getElementById("main-menubar");
+  for (let childNode of menubar.childNodes)
+    childNode.setAttribute("disabled", true);
+
+  var cmd = document.getElementById("cmd_CustomizeToolbars");
+  cmd.setAttribute("disabled", "true");
+
+  var splitter = document.getElementById("urlbar-search-splitter");
+  if (splitter)
+    splitter.parentNode.removeChild(splitter);
+
+  CombinedStopReload.uninit();
+
+  PlacesToolbarHelper.customizeStart();
+  BookmarkingUI.customizeStart();
+  DownloadsButton.customizeStart();
+
+  TabsInTitlebar.allowedBy("customizing-toolbars", false);
+
+  var customizeURL = "chrome://global/content/customizeToolbar.xul";
+  gCustomizeSheet = Services.prefs.getBoolPref("toolbar.customization.usesheet", false);
+
+  if (gCustomizeSheet) {
+    let sheetFrame = document.createElement("iframe");
+    let panel = document.getElementById("customizeToolbarSheetPopup");
+    sheetFrame.id = "customizeToolbarSheetIFrame";
+    sheetFrame.toolbox = gNavToolbox;
+    sheetFrame.panel = panel;
+    sheetFrame.setAttribute("style", panel.getAttribute("sheetstyle"));
+    panel.appendChild(sheetFrame);
+
+    // Open the panel, but make it invisible until the iframe has loaded so
+    // that the user doesn't see a white flash.
+    panel.style.visibility = "hidden";
+    gNavToolbox.addEventListener("beforecustomization", function onBeforeCustomization() {
+      gNavToolbox.removeEventListener("beforecustomization", onBeforeCustomization, false);
+      panel.style.removeProperty("visibility");
+    }, false);
+
+    sheetFrame.setAttribute("src", customizeURL);
+
+    panel.openPopup(gNavToolbox, "after_start", 0, 0);
+  } else {
+    window.openDialog(customizeURL,
+                      "CustomizeToolbar",
+                      "chrome,titlebar,toolbar,location,resizable,dependent",
+                      gNavToolbox);
+  }
+}
+
+function BrowserToolboxCustomizeDone(aToolboxChanged) {
+  if (gCustomizeSheet) {
+    document.getElementById("customizeToolbarSheetPopup").hidePopup();
+    let iframe = document.getElementById("customizeToolbarSheetIFrame");
+    iframe.parentNode.removeChild(iframe);
+  }
+
+  // Update global UI elements that may have been added or removed
+  if (aToolboxChanged) {
+    gURLBar = document.getElementById("urlbar");
+
+    gProxyFavIcon = document.getElementById("page-proxy-favicon");
+    gHomeButton.updateTooltip();
+    gIdentityHandler._cacheElements();
+    window.XULBrowserWindow.init();
+
+#ifndef XP_MACOSX
+    updateEditUIVisibility();
+#endif
+
+    // Hacky: update the PopupNotifications' object's reference to the iconBox,
+    // if it already exists, since it may have changed if the URL bar was
+    // added/removed.
+    if (!window.__lookupGetter__("PopupNotifications"))
+      PopupNotifications.iconBox = document.getElementById("notification-popup-box");
+  }
+
+  PlacesToolbarHelper.customizeDone();
+  BookmarkingUI.customizeDone();
+  DownloadsButton.customizeDone();
+
+  // The url bar splitter state is dependent on whether stop/reload
+  // and the location bar are combined, so we need this ordering
+  CombinedStopReload.init();
+  UpdateUrlbarSearchSplitterState();
+  setUrlAndSearchBarWidthForConditionalForwardButton();
+
+  // Update the urlbar
+  if (gURLBar) {
+    gURLBarSettings.writePlaceholder();
+    URLBarSetURI();
+    XULBrowserWindow.asyncUpdateUI();
+    BookmarkingUI.updateStarState();
+  }
+
+  TabsInTitlebar.allowedBy("customizing-toolbars", true);
+
+  // Re-enable parts of the UI we disabled during the dialog
+  var menubar = document.getElementById("main-menubar");
+  for (let childNode of menubar.childNodes)
+    childNode.setAttribute("disabled", false);
+  var cmd = document.getElementById("cmd_CustomizeToolbars");
+  cmd.removeAttribute("disabled");
+
+  // make sure to re-enable click-and-hold
+  if (!Services.prefs.getBoolPref("ui.click_hold_context_menus", false))
+    SetClickAndHoldHandlers();
+
+  gBrowser.selectedBrowser.focus();
+}
+
+function BrowserToolboxCustomizeChange(aType) {
+  switch (aType) {
+    case "iconsize":
+    case "mode":
+      retrieveToolbarIconsizesFromTheme();
+      break;
+    default:
+      gHomeButton.updatePersonalToolbarStyle();
+      BookmarkingUI.customizeChange();
+      allTabs.readPref();
+  }
+}
+
+/**
+ * Allows themes to override the "iconsize" attribute on toolbars.
+ */
+function retrieveToolbarIconsizesFromTheme() {
+  function retrieveToolbarIconsize(aToolbar) {
+    if (aToolbar.localName != "toolbar")
+      return;
+
+    // The theme indicates that it wants to override the "iconsize" attribute
+    // by specifying a special value for the "counter-reset" property on the
+    // toolbar. A custom property cannot be used because getComputedStyle can
+    // only return the values of standard CSS properties.
+    let counterReset = getComputedStyle(aToolbar).counterReset;
+    if (counterReset == "smallicons 0")
+      aToolbar.setAttribute("iconsize", "small");
+    else if (counterReset == "largeicons 0")
+      aToolbar.setAttribute("iconsize", "large");
+  }
+
+  Array.forEach(gNavToolbox.childNodes, retrieveToolbarIconsize);
+  gNavToolbox.externalToolbars.forEach(retrieveToolbarIconsize);
+}
+
+/**
+ * Update the global flag that tracks whether or not any edit UI (the Edit menu,
+ * edit-related items in the context menu, and edit-related toolbar buttons
+ * is visible, then update the edit commands' enabled state accordingly.  We use
+ * this flag to skip updating the edit commands on focus or selection changes
+ * when no UI is visible to improve performance (including pageload performance,
+ * since focus changes when you load a new page).
+ *
+ * If UI is visible, we use goUpdateGlobalEditMenuItems to set the commands'
+ * enabled state so the UI will reflect it appropriately.
+ *
+ * If the UI isn't visible, we enable all edit commands so keyboard shortcuts
+ * still work and just lazily disable them as needed when the user presses a
+ * shortcut.
+ *
+ * This doesn't work on Mac, since Mac menus flash when users press their
+ * keyboard shortcuts, so edit UI is essentially always visible on the Mac,
+ * and we need to always update the edit commands.  Thus on Mac this function
+ * is a no op.
+ */
+function updateEditUIVisibility()
+{
+#ifndef XP_MACOSX
+  let editMenuPopupState = document.getElementById("menu_EditPopup").state;
+  let contextMenuPopupState = document.getElementById("contentAreaContextMenu").state;
+  let placesContextMenuPopupState = document.getElementById("placesContext").state;
+#ifdef MENUBAR_CAN_AUTOHIDE
+  let appMenuPopupState = document.getElementById("appmenu-popup").state;
+#endif
+
+  // The UI is visible if the Edit menu is opening or open, if the context menu
+  // is open, or if the toolbar has been customized to include the Cut, Copy,
+  // or Paste toolbar buttons.
+  gEditUIVisible = editMenuPopupState == "showing" ||
+                   editMenuPopupState == "open" ||
+                   contextMenuPopupState == "showing" ||
+                   contextMenuPopupState == "open" ||
+                   placesContextMenuPopupState == "showing" ||
+                   placesContextMenuPopupState == "open" ||
+#ifdef MENUBAR_CAN_AUTOHIDE
+                   appMenuPopupState == "showing" ||
+                   appMenuPopupState == "open" ||
+#endif
+                   document.getElementById("cut-button") ||
+                   document.getElementById("copy-button") ||
+                   document.getElementById("paste-button") ? true : false;
+
+  // If UI is visible, update the edit commands' enabled state to reflect
+  // whether or not they are actually enabled for the current focus/selection.
+  if (gEditUIVisible)
+    goUpdateGlobalEditMenuItems();
+
+  // Otherwise, enable all commands, so that keyboard shortcuts still work,
+  // then lazily determine their actual enabled state when the user presses
+  // a keyboard shortcut.
+  else {
+    goSetCommandEnabled("cmd_undo", true);
+    goSetCommandEnabled("cmd_redo", true);
+    goSetCommandEnabled("cmd_cut", true);
+    goSetCommandEnabled("cmd_copy", true);
+    goSetCommandEnabled("cmd_paste", true);
+    goSetCommandEnabled("cmd_selectAll", true);
+    goSetCommandEnabled("cmd_delete", true);
+    goSetCommandEnabled("cmd_switchTextDirection", true);
+  }
+#endif
+}
+
+/**
+ * Makes the Character Encoding menu enabled or disabled as appropriate.
+ * To be called when the View menu or the app menu is opened.
+ */
+function updateCharacterEncodingMenuState()
+{
+  let charsetMenu = document.getElementById("charsetMenu");
+  let appCharsetMenu = document.getElementById("appmenu_charsetMenu");
+  let appDevCharsetMenu =
+    document.getElementById("appmenu_developer_charsetMenu");
+  // gBrowser is null on Mac when the menubar shows in the context of
+  // non-browser windows. The above elements may be null depending on
+  // what parts of the menubar are present. E.g. no app menu on Mac.
+  if (gBrowser &&
+      gBrowser.docShell &&
+      gBrowser.docShell.mayEnableCharacterEncodingMenu) {
+    if (charsetMenu) {
+      charsetMenu.removeAttribute("disabled");
+    }
+    if (appCharsetMenu) {
+      appCharsetMenu.removeAttribute("disabled");
+    }
+    if (appDevCharsetMenu) {
+      appDevCharsetMenu.removeAttribute("disabled");
+    }
+  } else {
+    if (charsetMenu) {
+      charsetMenu.setAttribute("disabled", "true");
+    }
+    if (appCharsetMenu) {
+      appCharsetMenu.setAttribute("disabled", "true");
+    }
+    if (appDevCharsetMenu) {
+      appDevCharsetMenu.setAttribute("disabled", "true");
+    }
+  }
+}
+
+var XULBrowserWindow = {
+  // Stored Status, Link and Loading values
+  status: "",
+  defaultStatus: "",
+  overLink: "",
+  startTime: 0,
+  statusText: "",
+  isBusy: false,
+/* Pale Moon: Don't hide navigation controls and toolbars for "special" pages. SBaD, M!
+  inContentWhitelist: ["about:addons", "about:downloads", "about:permissions",
+                       "about:sync-progress"],*/
+  inContentWhitelist: [],
+
+  QueryInterface: function (aIID) {
+    if (aIID.equals(Ci.nsIWebProgressListener) ||
+        aIID.equals(Ci.nsIWebProgressListener2) ||
+        aIID.equals(Ci.nsISupportsWeakReference) ||
+        aIID.equals(Ci.nsIXULBrowserWindow) ||
+        aIID.equals(Ci.nsISupports))
+      return this;
+    throw Cr.NS_NOINTERFACE;
+  },
+
+  get stopCommand () {
+    delete this.stopCommand;
+    return this.stopCommand = document.getElementById("Browser:Stop");
+  },
+  get reloadCommand () {
+    delete this.reloadCommand;
+    return this.reloadCommand = document.getElementById("Browser:Reload");
+  },
+  get statusTextField () {
+    delete this.statusTextField;
+    return this.statusTextField = document.getElementById("statusbar-display");
+  },
+  get isImage () {
+    delete this.isImage;
+    return this.isImage = document.getElementById("isImage");
+  },
+
+  init: function () {
+    this.throbberElement = document.getElementById("navigator-throbber");
+
+    // Bug 666809 - SecurityUI support for e10s
+    if (gMultiProcessBrowser)
+      return;
+
+    // Initialize the security button's state and tooltip text.  Remember to reset
+    // _hostChanged, otherwise onSecurityChange will short circuit.
+    var securityUI = gBrowser.securityUI;
+    this._hostChanged = true;
+    this.onSecurityChange(null, null, securityUI.state);
+  },
+
+  destroy: function () {
+    // XXXjag to avoid leaks :-/, see bug 60729
+    delete this.throbberElement;
+    delete this.stopCommand;
+    delete this.reloadCommand;
+    delete this.statusTextField;
+    delete this.statusText;
+  },
+
+  setJSStatus: function () {
+    // unsupported
+  },
+
+  setDefaultStatus: function (status) {
+    this.defaultStatus = status;
+    this.updateStatusField();
+  },
+
+  setOverLink: function (url, anchorElt) {
+    // Encode bidirectional formatting characters.
+    // (RFC 3987 sections 3.2 and 4.1 paragraph 6)
+    url = url.replace(/[\u200e\u200f\u202a\u202b\u202c\u202d\u202e]/g,
+                      encodeURIComponent);
+
+    if (gURLBar && gURLBar._mayTrimURLs /* corresponds to browser.urlbar.trimURLs */)
+      url = trimURL(url);
+
+    this.overLink = url;
+    LinkTargetDisplay.update();
+  },
+
+  updateStatusField: function () {
+    var text, type, types = ["overLink"];
+    if (this._busyUI)
+      types.push("status");
+    types.push("defaultStatus");
+    for (type of types) {
+      text = this[type];
+      if (text)
+        break;
+    }
+
+    // check the current value so we don't trigger an attribute change
+    // and cause needless (slow!) UI updates
+    if (this.statusText != text) {
+      let field = this.statusTextField;
+      field.setAttribute("previoustype", field.getAttribute("type"));
+      field.setAttribute("type", type);
+      field.label = text;
+      field.setAttribute("crop", type == "overLink" ? "center" : "end");
+      this.statusText = text;
+    }
+  },
+
+  // Called before links are navigated to to allow us to retarget them if needed.
+  onBeforeLinkTraversal: function(originalTarget, linkURI, linkNode, isAppTab) {
+    let target = this._onBeforeLinkTraversal(originalTarget, linkURI, linkNode, isAppTab);
+    return target;
+  },
+
+  _onBeforeLinkTraversal: function(originalTarget, linkURI, linkNode, isAppTab) {
+    // Don't modify non-default targets or targets that aren't in top-level app
+    // tab docshells (isAppTab will be false for app tab subframes).
+    if (originalTarget != "" || !isAppTab)
+      return originalTarget;
+
+    // External links from within app tabs should always open in new tabs
+    // instead of replacing the app tab's page (Bug 575561)
+    let linkHost;
+    let docHost;
+    try {
+      linkHost = linkURI.host;
+      docHost = linkNode.ownerDocument.documentURIObject.host;
+    } catch(e) {
+      // nsIURI.host can throw for non-nsStandardURL nsIURIs.
+      // If we fail to get either host, just return originalTarget.
+      return originalTarget;
+    }
+
+    if (docHost == linkHost)
+      return originalTarget;
+
+    // Special case: ignore "www" prefix if it is part of host string
+    let [longHost, shortHost] =
+      linkHost.length > docHost.length ? [linkHost, docHost] : [docHost, linkHost];
+    if (longHost == "www." + shortHost)
+      return originalTarget;
+
+    return "_blank";
+  },
+  
+  onLinkIconAvailable: function (aIconURL) {
+    if (gProxyFavIcon && gBrowser.userTypedValue === null) {
+      PageProxySetIcon(aIconURL); // update the favicon in the URL bar
+    }
+  },
+
+  onProgressChange: function (aWebProgress, aRequest,
+                              aCurSelfProgress, aMaxSelfProgress,
+                              aCurTotalProgress, aMaxTotalProgress) {
+    // Do nothing.
+  },
+
+  onProgressChange64: function (aWebProgress, aRequest,
+                                aCurSelfProgress, aMaxSelfProgress,
+                                aCurTotalProgress, aMaxTotalProgress) {
+    return this.onProgressChange(aWebProgress, aRequest,
+      aCurSelfProgress, aMaxSelfProgress, aCurTotalProgress,
+      aMaxTotalProgress);
+  },
+
+  // This function fires only for the currently selected tab.
+  onStateChange: function (aWebProgress, aRequest, aStateFlags, aStatus) {
+    const nsIWebProgressListener = Ci.nsIWebProgressListener;
+    const nsIChannel = Ci.nsIChannel;
+
+    if (aStateFlags & nsIWebProgressListener.STATE_START &&
+        aStateFlags & nsIWebProgressListener.STATE_IS_NETWORK) {
+
+      if (aRequest && aWebProgress.isTopLevel) {
+        // clear out feed data
+        gBrowser.selectedBrowser.feeds = null;
+
+        // clear out search-engine data
+        gBrowser.selectedBrowser.engines = null;
+      }
+
+      this.isBusy = true;
+
+      if (!(aStateFlags & nsIWebProgressListener.STATE_RESTORING)) {
+        this._busyUI = true;
+
+        // Turn the throbber on.
+        if (this.throbberElement)
+          this.throbberElement.setAttribute("busy", "true");
+
+        // XXX: This needs to be based on window activity...
+        this.stopCommand.removeAttribute("disabled");
+        CombinedStopReload.switchToStop();
+      }
+    }
+    else if (aStateFlags & nsIWebProgressListener.STATE_STOP) {
+      // This (thanks to the filter) is a network stop or the last
+      // request stop outside of loading the document, stop throbbers
+      // and progress bars and such
+      if (aRequest) {
+        let msg = "";
+        let location;
+        // Get the URI either from a channel or a pseudo-object
+        if (aRequest instanceof nsIChannel || "URI" in aRequest) {
+          location = aRequest.URI;
+
+          // For keyword URIs clear the user typed value since they will be changed into real URIs
+          if (location.scheme == "keyword" && aWebProgress.isTopLevel)
+            gBrowser.userTypedValue = null;
+
+          if (location.spec != "about:blank") {
+            switch (aStatus) {
+              case Components.results.NS_ERROR_NET_TIMEOUT:
+                msg = gNavigatorBundle.getString("nv_timeout");
+                break;
+            }
+          }
+        }
+
+        this.status = "";
+        this.setDefaultStatus(msg);
+
+        // Disable menu entries for images, enable otherwise
+        if (!gMultiProcessBrowser && content.document && BrowserUtils.mimeTypeIsTextBased(content.document.contentType))
+          this.isImage.removeAttribute('disabled');
+        else
+          this.isImage.setAttribute('disabled', 'true');
+      }
+
+      this.isBusy = false;
+
+      if (this._busyUI) {
+        this._busyUI = false;
+
+        // Turn the throbber off.
+        if (this.throbberElement)
+          this.throbberElement.removeAttribute("busy");
+
+        this.stopCommand.setAttribute("disabled", "true");
+        CombinedStopReload.switchToReload(aRequest instanceof Ci.nsIRequest);
+      }
+    }
+  },
+
+  onLocationChange: function (aWebProgress, aRequest, aLocationURI, aFlags) {
+    var location = aLocationURI ? aLocationURI.spec : "";
+    this._hostChanged = true;
+
+    // If displayed, hide the form validation popup.
+    FormValidationHandler.hidePopup();
+
+    let pageTooltip = document.getElementById("aHTMLTooltip");
+    let tooltipNode = pageTooltip.triggerNode;
+    if (tooltipNode) {
+      // Optimise for the common case
+      if (aWebProgress.isTopLevel) {
+        pageTooltip.hidePopup();
+      }
+      else {
+        for (let tooltipWindow = tooltipNode.ownerDocument.defaultView;
+             tooltipWindow != tooltipWindow.parent;
+             tooltipWindow = tooltipWindow.parent) {
+          if (tooltipWindow == aWebProgress.DOMWindow) {
+            pageTooltip.hidePopup();
+            break;
+          }
+        }
+      }
+    }
+
+    // Disable menu entries for images, enable otherwise
+    if (!gMultiProcessBrowser && content.document && BrowserUtils.mimeTypeIsTextBased(content.document.contentType))
+      this.isImage.removeAttribute('disabled');
+    else
+      this.isImage.setAttribute('disabled', 'true');
+
+    this.hideOverLinkImmediately = true;
+    this.setOverLink("", null);
+    this.hideOverLinkImmediately = false;
+
+    // We should probably not do this if the value has changed since the user
+    // searched
+    // Update urlbar only if a new page was loaded on the primary content area
+    // Do not update urlbar if there was a subframe navigation
+
+    var browser = gBrowser.selectedBrowser;
+    if (aWebProgress.isTopLevel) {
+      if ((location == "about:blank" && (gMultiProcessBrowser || !content.opener)) ||
+          location == "") {  // Second condition is for new tabs, otherwise
+                             // reload function is enabled until tab is refreshed.
+        this.reloadCommand.setAttribute("disabled", "true");
+      } else {
+        this.reloadCommand.removeAttribute("disabled");
+      }
+
+      if (gURLBar) {
+        URLBarSetURI(aLocationURI);
+
+        // Update starring UI
+        BookmarkingUI.updateStarState();
+      }
+
+      // Show or hide browser chrome based on the whitelist
+      if (this.hideChromeForLocation(location)) {
+        document.documentElement.setAttribute("disablechrome", "true");
+      } else {
+        let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
+        if (ss.getTabValue(gBrowser.selectedTab, "appOrigin"))
+          document.documentElement.setAttribute("disablechrome", "true");
+        else
+          document.documentElement.removeAttribute("disablechrome");
+      }
+
+      // Utility functions for disabling find
+      var shouldDisableFind = function shouldDisableFind(aDocument) {
+        let docElt = aDocument.documentElement;
+        return docElt && docElt.getAttribute("disablefastfind") == "true";
+      }
+
+      var disableFindCommands = function disableFindCommands(aDisable) {
+        let findCommands = [document.getElementById("cmd_find"),
+                            document.getElementById("cmd_findAgain"),
+                            document.getElementById("cmd_findPrevious")];
+        for (let elt of findCommands) {
+          if (aDisable)
+            elt.setAttribute("disabled", "true");
+          else
+            elt.removeAttribute("disabled");
+        }
+        if (gFindBarInitialized) {
+          if (!gFindBar.hidden && aDisable) {
+            gFindBar.hidden = true;
+            this._findbarTemporarilyHidden = true;
+          } else if (this._findbarTemporarilyHidden && !aDisable) {
+            gFindBar.hidden = false;
+            this._findbarTemporarilyHidden = false;
+          }
+        }
+      }.bind(this);
+
+      var onContentRSChange = function onContentRSChange(e) {
+        if (e.target.readyState != "interactive" && e.target.readyState != "complete")
+          return;
+
+        e.target.removeEventListener("readystatechange", onContentRSChange);
+        disableFindCommands(shouldDisableFind(e.target));
+      }
+
+      // Disable find commands in documents that ask for them to be disabled.
+      if (!gMultiProcessBrowser && aLocationURI &&
+          (aLocationURI.schemeIs("about") || aLocationURI.schemeIs("chrome"))) {
+        // Don't need to re-enable/disable find commands for same-document location changes
+        // (e.g. the replaceStates in about:addons)
+        if (!(aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT)) {
+          if (content.document.readyState == "interactive" || content.document.readyState == "complete")
+            disableFindCommands(shouldDisableFind(content.document));
+          else {
+            content.document.addEventListener("readystatechange", onContentRSChange);
+          }
+        }
+      } else
+        disableFindCommands(false);
+
+      if (gFindBarInitialized) {
+        if (gFindBar.findMode != gFindBar.FIND_NORMAL) {
+          // Close the Find toolbar if we're in old-style TAF mode
+          gFindBar.close();
+        }
+        
+        // XXX
+        // See: https://github.com/MoonchildProductions/Pale-Moon/issues/364
+        // An actual preference: findbar.highlightAll
+        /*
+        if (!(gPrefService.getBoolPref("accessibility.typeaheadfind.highlightallremember") ||
+              gPrefService.getBoolPref("accessibility.typeaheadfind.highlightallbydefault"))) {
+            // fix bug 253793 - turn off highlight when page changes
+            gFindBar.getElement("highlight").checked = false;
+        }
+        */
+      }
+    }
+    UpdateBackForwardCommands(gBrowser.webNavigation);
+
+    gGestureSupport.restoreRotationState();
+
+    // See bug 358202, when tabs are switched during a drag operation,
+    // timers don't fire on windows (bug 203573)
+    if (aRequest)
+      setTimeout(function () { XULBrowserWindow.asyncUpdateUI(); }, 0);
+    else
+      this.asyncUpdateUI();
+  },
+
+  asyncUpdateUI: function () {
+    FeedHandler.updateFeeds();
+  },
+
+  hideChromeForLocation: function(aLocation) {
+    aLocation = aLocation.toLowerCase();
+    return this.inContentWhitelist.some(function(aSpec) {
+      return aSpec == aLocation;
+    });
+  },
+
+  onStatusChange: function (aWebProgress, aRequest, aStatus, aMessage) {
+    this.status = aMessage;
+    this.updateStatusField();
+  },
+
+  // Properties used to cache security state used to update the UI
+  _state: null,
+  _hostChanged: false, // onLocationChange will flip this bit
+
+  onSecurityChange: function (aWebProgress, aRequest, aState) {
+    // Don't need to do anything if the data we use to update the UI hasn't
+    // changed
+    if (this._state == aState &&
+        !this._hostChanged) {
+#ifdef DEBUG
+      try {
+        var contentHost = gBrowser.contentWindow.location.host;
+        if (this._host !== undefined && this._host != contentHost) {
+            Components.utils.reportError(
+              "ASSERTION: browser.js host is inconsistent. Content window has " +
+              "<" + contentHost + "> but cached host is <" + this._host + ">.\n"
+            );
+        }
+      } catch (ex) {}
+#endif
+      return;
+    }
+    this._state = aState;
+
+#ifdef DEBUG
+    try {
+      this._host = gBrowser.contentWindow.location.host;
+    } catch(ex) {
+      this._host = null;
+    }
+#endif
+
+    this._hostChanged = false;
+
+    // aState is defined as a bitmask that may be extended in the future.
+    // We filter out any unknown bits before testing for known values.
+    const wpl = Components.interfaces.nsIWebProgressListener;
+    const wpl_security_bits = wpl.STATE_IS_SECURE |
+                              wpl.STATE_IS_BROKEN |
+                              wpl.STATE_IS_INSECURE;
+    var level;
+
+    switch (this._state & wpl_security_bits) {
+      case wpl.STATE_IS_SECURE:
+        level = "high";
+        break;
+      case wpl.STATE_IS_BROKEN:
+        level = "broken";
+        break;
+    }
+
+    if (level) {
+      // We don't style the Location Bar based on the the 'level' attribute
+      // anymore, but still set it for third-party themes.
+      if (gURLBar)
+        gURLBar.setAttribute("level", level);
+    } else {
+      if (gURLBar)
+        gURLBar.removeAttribute("level");
+    }
+
+    if (gMultiProcessBrowser)
+      return;
+
+    // Don't pass in the actual location object, since it can cause us to
+    // hold on to the window object too long.  Just pass in the fields we
+    // care about. (bug 424829)
+    var location = gBrowser.contentWindow.location;
+    var locationObj = {};
+    try {
+      // about:blank can be used by webpages so pretend it is http
+      locationObj.protocol = location == "about:blank" ? "http:" : location.protocol;
+      locationObj.host = location.host;
+      locationObj.hostname = location.hostname;
+      locationObj.port = location.port;
+    } catch (ex) {
+      // Can sometimes throw if the URL being visited has no host/hostname,
+      // e.g. about:blank. The _state for these pages means we won't need these
+      // properties anyways, though.
+    }
+    gIdentityHandler.checkIdentity(this._state, locationObj);
+  },
+
+  // simulate all change notifications after switching tabs
+  onUpdateCurrentBrowser: function XWB_onUpdateCurrentBrowser(aStateFlags, aStatus, aMessage, aTotalProgress) {
+    if (FullZoom.updateBackgroundTabs)
+      FullZoom.onLocationChange(gBrowser.currentURI, true);
+    var nsIWebProgressListener = Components.interfaces.nsIWebProgressListener;
+    var loadingDone = aStateFlags & nsIWebProgressListener.STATE_STOP;
+    // use a pseudo-object instead of a (potentially nonexistent) channel for getting
+    // a correct error message - and make sure that the UI is always either in
+    // loading (STATE_START) or done (STATE_STOP) mode
+    this.onStateChange(
+      gBrowser.webProgress,
+      { URI: gBrowser.currentURI },
+      loadingDone ? nsIWebProgressListener.STATE_STOP : nsIWebProgressListener.STATE_START,
+      aStatus
+    );
+    // status message and progress value are undefined if we're done with loading
+    if (loadingDone)
+      return;
+    this.onStatusChange(gBrowser.webProgress, null, 0, aMessage);
+  }
+};
+
+var LinkTargetDisplay = {
+  get DELAY_SHOW() {
+     delete this.DELAY_SHOW;
+     return this.DELAY_SHOW = Services.prefs.getIntPref("browser.overlink-delay");
+  },
+
+  DELAY_HIDE: 250,
+  _timer: 0,
+
+  get _isVisible () XULBrowserWindow.statusTextField.label != "",
+
+  update: function () {
+    clearTimeout(this._timer);
+    window.removeEventListener("mousemove", this, true);
+
+    if (!XULBrowserWindow.overLink) {
+      if (XULBrowserWindow.hideOverLinkImmediately)
+        this._hide();
+      else
+        this._timer = setTimeout(this._hide.bind(this), this.DELAY_HIDE);
+      return;
+    }
+
+    if (this._isVisible) {
+      XULBrowserWindow.updateStatusField();
+    } else {
+      // Let the display appear when the mouse doesn't move within the delay
+      this._showDelayed();
+      window.addEventListener("mousemove", this, true);
+    }
+  },
+
+  handleEvent: function (event) {
+    switch (event.type) {
+      case "mousemove":
+        // Restart the delay since the mouse was moved
+        clearTimeout(this._timer);
+        this._showDelayed();
+        break;
+    }
+  },
+
+  _showDelayed: function () {
+    this._timer = setTimeout(function (self) {
+      XULBrowserWindow.updateStatusField();
+      window.removeEventListener("mousemove", self, true);
+    }, this.DELAY_SHOW, this);
+  },
+
+  _hide: function () {
+    clearTimeout(this._timer);
+
+    XULBrowserWindow.updateStatusField();
+  }
+};
+
+var CombinedStopReload = {
+  init: function () {
+    if (this._initialized)
+      return;
+
+    var urlbar = document.getElementById("urlbar-container");
+    var reload = document.getElementById("reload-button");
+    var stop = document.getElementById("stop-button");
+
+    if (urlbar) {
+      if (urlbar.parentNode.getAttribute("mode") != "icons" ||
+          !reload || urlbar.nextSibling != reload ||
+          !stop || reload.nextSibling != stop)
+        urlbar.removeAttribute("combined");
+      else {
+        urlbar.setAttribute("combined", "true");
+        reload = document.getElementById("urlbar-reload-button");
+        stop = document.getElementById("urlbar-stop-button");
+      }
+    }
+    if (!stop || !reload || reload.nextSibling != stop)
+      return;
+
+    this._initialized = true;
+    if (XULBrowserWindow.stopCommand.getAttribute("disabled") != "true")
+      reload.setAttribute("displaystop", "true");
+    stop.addEventListener("click", this, false);
+    this.reload = reload;
+    this.stop = stop;
+  },
+
+  uninit: function () {
+    if (!this._initialized)
+      return;
+
+    this._cancelTransition();
+    this._initialized = false;
+    this.stop.removeEventListener("click", this, false);
+    this.reload = null;
+    this.stop = null;
+  },
+
+  handleEvent: function (event) {
+    // the only event we listen to is "click" on the stop button
+    if (event.button == 0 &&
+        !this.stop.disabled)
+      this._stopClicked = true;
+  },
+
+  switchToStop: function () {
+    if (!this._initialized)
+      return;
+
+    this._cancelTransition();
+    this.reload.setAttribute("displaystop", "true");
+  },
+
+  switchToReload: function (aDelay) {
+    if (!this._initialized)
+      return;
+
+    this.reload.removeAttribute("displaystop");
+
+    if (!aDelay || this._stopClicked) {
+      this._stopClicked = false;
+      this._cancelTransition();
+      this.reload.disabled = XULBrowserWindow.reloadCommand
+                                             .getAttribute("disabled") == "true";
+      return;
+    }
+
+    if (this._timer)
+      return;
+
+    // Temporarily disable the reload button to prevent the user from
+    // accidentally reloading the page when intending to click the stop button
+    this.reload.disabled = true;
+    this._timer = setTimeout(function (self) {
+      self._timer = 0;
+      self.reload.disabled = XULBrowserWindow.reloadCommand
+                                             .getAttribute("disabled") == "true";
+    }, 650, this);
+  },
+
+  _cancelTransition: function () {
+    if (this._timer) {
+      clearTimeout(this._timer);
+      this._timer = 0;
+    }
+  }
+};
+
+var TabsProgressListener = {
+  onStateChange: function (aBrowser, aWebProgress, aRequest, aStateFlags, aStatus) {
+
+    // Attach a listener to watch for "click" events bubbling up from error
+    // pages and other similar page. This lets us fix bugs like 401575 which
+    // require error page UI to do privileged things, without letting error
+    // pages have any privilege themselves.
+    // We can't look for this during onLocationChange since at that point the
+    // document URI is not yet the about:-uri of the error page.
+
+    let doc = gMultiProcessBrowser ? null : aWebProgress.DOMWindow.document;
+    if (!gMultiProcessBrowser &&
+        aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
+        Components.isSuccessCode(aStatus) &&
+        doc.documentURI.startsWith("about:") &&
+        !doc.documentURI.toLowerCase().startsWith("about:blank") &&
+        !doc.documentElement.hasAttribute("hasBrowserHandlers")) {
+      // STATE_STOP may be received twice for documents, thus store an
+      // attribute to ensure handling it just once.
+      doc.documentElement.setAttribute("hasBrowserHandlers", "true");
+      aBrowser.addEventListener("click", BrowserOnClick, true);
+      aBrowser.addEventListener("pagehide", function onPageHide(event) {
+        if (event.target.defaultView.frameElement)
+          return;
+        aBrowser.removeEventListener("click", BrowserOnClick, true);
+        aBrowser.removeEventListener("pagehide", onPageHide, true);
+        if (event.target.documentElement)
+          event.target.documentElement.removeAttribute("hasBrowserHandlers");
+      }, true);
+
+      // We also want to make changes to page UI for unprivileged about pages.
+      BrowserOnAboutPageLoad(doc);
+    }
+  },
+
+  onLocationChange: function (aBrowser, aWebProgress, aRequest, aLocationURI,
+                              aFlags) {
+    // Filter out location changes caused by anchor navigation
+    // or history.push/pop/replaceState.
+    if (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT)
+      return;
+
+    // Only need to call locationChange if the PopupNotifications object
+    // for this window has already been initialized (i.e. its getter no
+    // longer exists)
+    if (!Object.getOwnPropertyDescriptor(window, "PopupNotifications").get)
+      PopupNotifications.locationChange(aBrowser);
+
+    gBrowser.getNotificationBox(aBrowser).removeTransientNotifications();
+
+    // Filter out location changes in sub documents.
+    if (aWebProgress.isTopLevel) {
+      // Initialize the click-to-play state.
+      aBrowser._clickToPlayPluginsActivated = new Map();
+      aBrowser._clickToPlayAllPluginsActivated = false;
+      aBrowser._pluginScriptedState = gPluginHandler.PLUGIN_SCRIPTED_STATE_NONE;
+
+      FullZoom.onLocationChange(aLocationURI, false, aBrowser);
+    }
+  },
+
+  onRefreshAttempted: function (aBrowser, aWebProgress, aURI, aDelay, aSameURI) {
+    if (gPrefService.getBoolPref("accessibility.blockautorefresh")) {
+      let brandBundle = document.getElementById("bundle_brand");
+      let brandShortName = brandBundle.getString("brandShortName");
+      let refreshButtonText =
+        gNavigatorBundle.getString("refreshBlocked.goButton");
+      let refreshButtonAccesskey =
+        gNavigatorBundle.getString("refreshBlocked.goButton.accesskey");
+      let message =
+        gNavigatorBundle.getFormattedString(aSameURI ? "refreshBlocked.refreshLabel"
+                                                     : "refreshBlocked.redirectLabel",
+                                            [brandShortName]);
+      let docShell = aWebProgress.DOMWindow
+                                 .QueryInterface(Ci.nsIInterfaceRequestor)
+                                 .getInterface(Ci.nsIWebNavigation)
+                                 .QueryInterface(Ci.nsIDocShell);
+      let notificationBox = gBrowser.getNotificationBox(aBrowser);
+      let notification = notificationBox.getNotificationWithValue("refresh-blocked");
+      if (notification) {
+        notification.label = message;
+        notification.refreshURI = aURI;
+        notification.delay = aDelay;
+        notification.docShell = docShell;
+      } else {
+        let buttons = [{
+          label: refreshButtonText,
+          accessKey: refreshButtonAccesskey,
+          callback: function (aNotification, aButton) {
+            var refreshURI = aNotification.docShell
+                                          .QueryInterface(Ci.nsIRefreshURI);
+            refreshURI.forceRefreshURI(aNotification.refreshURI,
+                                       aNotification.delay, true);
+          }
+        }];
+        notification =
+          notificationBox.appendNotification(message, "refresh-blocked",
+                                             "chrome://browser/skin/Info.png",
+                                             notificationBox.PRIORITY_INFO_MEDIUM,
+                                             buttons);
+        notification.refreshURI = aURI;
+        notification.delay = aDelay;
+        notification.docShell = docShell;
+      }
+      return false;
+    }
+    return true;
+  }
+}
+
+function nsBrowserAccess() { }
+
+nsBrowserAccess.prototype = {
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIBrowserDOMWindow, Ci.nsISupports]),
+
+  openURI: function (aURI, aOpener, aWhere, aContext) {
+    var newWindow = null;
+    var isExternal = !!(aContext & Ci.nsIBrowserDOMWindow.OPEN_EXTERNAL);
+
+    if (aOpener && isExternal) {
+      Cu.reportError("nsBrowserAccess.openURI did not expect an opener to be " +
+                     "passed if the context is OPEN_EXTERNAL.");
+      throw Cr.NS_ERROR_FAILURE;
+    }
+
+    if (isExternal && aURI && aURI.schemeIs("chrome")) {
+      dump("use -chrome command-line option to load external chrome urls\n");
+      return null;
+    }
+
+    if (aWhere == Ci.nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW) {
+      if (isExternal &&
+          gPrefService.prefHasUserValue("browser.link.open_newwindow.override.external"))
+        aWhere = gPrefService.getIntPref("browser.link.open_newwindow.override.external");
+      else
+        aWhere = gPrefService.getIntPref("browser.link.open_newwindow");
+    }
+
+    let referrer = aOpener ? makeURI(aOpener.location.href) : null;
+    let triggeringPrincipal = null;
+    let referrerPolicy = Ci.nsIHttpChannel.REFERRER_POLICY_DEFAULT;
+    if (aOpener && aOpener.document) {
+      referrerPolicy = aOpener.document.referrerPolicy;
+      triggeringPrincipal = aOpener.document.nodePrincipal;
+    }
+
+    switch (aWhere) {
+      case Ci.nsIBrowserDOMWindow.OPEN_NEWWINDOW :
+        // FIXME: Bug 408379. So how come this doesn't send the
+        // referrer like the other loads do?
+        var url = aURI ? aURI.spec : "about:blank";
+        // Pass all params to openDialog to ensure that "url" isn't passed through
+        // loadOneOrMoreURIs, which splits based on "|"
+        newWindow = openDialog(getBrowserURL(), "_blank", "all,dialog=no", url, null, null, null);
+        break;
+      case Ci.nsIBrowserDOMWindow.OPEN_NEWTAB :
+        let win, needToFocusWin;
+
+        // try the current window.  if we're in a popup, fall back on the most recent browser window
+        if (window.toolbar.visible)
+          win = window;
+        else {
+          let isPrivate = PrivateBrowsingUtils.isWindowPrivate(aOpener || window);
+          win = RecentWindow.getMostRecentBrowserWindow({private: isPrivate});
+          needToFocusWin = true;
+        }
+
+        if (!win) {
+          // we couldn't find a suitable window, a new one needs to be opened.
+          return null;
+        }
+
+        if (isExternal && (!aURI || aURI.spec == "about:blank")) {
+          win.BrowserOpenTab(); // this also focuses the location bar
+          win.focus();
+          newWindow = win.content;
+          break;
+        }
+
+        let loadInBackground = gPrefService.getBoolPref("browser.tabs.loadDivertedInBackground");
+        let openerWindow = (aContext & Ci.nsIBrowserDOMWindow.OPEN_NO_OPENER) ? null : aOpener;
+
+        let tab = win.gBrowser.loadOneTab(aURI ? aURI.spec : "about:blank", {
+                                          triggeringPrincipal: triggeringPrincipal,
+                                          referrerURI: referrer,
+                                          referrerPolicy: referrerPolicy,
+                                          fromExternal: isExternal,
+                                          inBackground: loadInBackground,
+                                          opener: openerWindow });
+        let browser = win.gBrowser.getBrowserForTab(tab);
+
+        if (gPrefService.getBoolPref("browser.tabs.noWindowActivationOnExternal")) {
+          isExternal = false; // this is a hack, but it works
+        }
+
+        newWindow = browser.contentWindow;
+        if (needToFocusWin || (!loadInBackground && isExternal))
+          newWindow.focus();
+        break;
+      default : // OPEN_CURRENTWINDOW or an illegal value
+        newWindow = content;
+        if (aURI) {
+          let loadflags = isExternal ?
+                            Ci.nsIWebNavigation.LOAD_FLAGS_FROM_EXTERNAL :
+                            Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+          gBrowser.loadURIWithFlags(aURI.spec, {
+                                    flags: loadflags,
+                                    triggeringPrincipal: triggeringPrincipal,
+                                    referrerURI: referrer,
+                                    referrerPolicy: referrerPolicy,
+                                    });
+        }
+        if (!gPrefService.getBoolPref("browser.tabs.loadDivertedInBackground"))
+          window.focus();
+    }
+    return newWindow;
+  },
+
+  isTabContentWindow: function (aWindow) {
+    return gBrowser.browsers.some(function (browser) browser.contentWindow == aWindow);
+  }
+}
+
+function onViewToolbarsPopupShowing(aEvent, aInsertPoint) {
+  var popup = aEvent.target;
+  if (popup != aEvent.currentTarget)
+    return;
+
+  // Empty the menu
+  for (var i = popup.childNodes.length-1; i >= 0; --i) {
+    var deadItem = popup.childNodes[i];
+    if (deadItem.hasAttribute("toolbarId"))
+      popup.removeChild(deadItem);
+  }
+
+  var firstMenuItem = aInsertPoint || popup.firstChild;
+
+  let toolbarNodes = Array.slice(gNavToolbox.childNodes);
+  toolbarNodes.push(document.getElementById("addon-bar"));
+
+  for (let toolbar of toolbarNodes) {
+    let toolbarName = toolbar.getAttribute("toolbarname");
+    if (toolbarName) {
+      let menuItem = document.createElement("menuitem");
+      let hidingAttribute = toolbar.getAttribute("type") == "menubar" ?
+                            "autohide" : "collapsed";
+      menuItem.setAttribute("id", "toggle_" + toolbar.id);
+      menuItem.setAttribute("toolbarId", toolbar.id);
+      menuItem.setAttribute("type", "checkbox");
+      menuItem.setAttribute("label", toolbarName);
+      menuItem.setAttribute("checked", toolbar.getAttribute(hidingAttribute) != "true");
+      if (popup.id != "appmenu_customizeMenu")
+        menuItem.setAttribute("accesskey", toolbar.getAttribute("accesskey"));
+      if (popup.id != "toolbar-context-menu")
+        menuItem.setAttribute("key", toolbar.getAttribute("key"));
+
+      popup.insertBefore(menuItem, firstMenuItem);
+
+      menuItem.addEventListener("command", onViewToolbarCommand, false);
+    }
+  }
+}
+
+function onViewToolbarCommand(aEvent) {
+  var toolbarId = aEvent.originalTarget.getAttribute("toolbarId");
+  var toolbar = document.getElementById(toolbarId);
+  var isVisible = aEvent.originalTarget.getAttribute("checked") == "true";
+  setToolbarVisibility(toolbar, isVisible);
+}
+
+function setToolbarVisibility(toolbar, isVisible) {
+  var hidingAttribute = toolbar.getAttribute("type") == "menubar" ?
+                        "autohide" : "collapsed";
+
+  toolbar.setAttribute(hidingAttribute, !isVisible);
+  document.persist(toolbar.id, hidingAttribute);
+
+  // Customizable toolbars - persist the hiding attribute.
+  if (toolbar.hasAttribute("customindex")) {
+    var toolbox = toolbar.parentNode;
+    var name = toolbar.getAttribute("toolbarname");
+    if (toolbox.toolbarset) {
+      try {
+        // Checking all attributes starting with "toolbar".
+        Array.prototype.slice.call(toolbox.toolbarset.attributes, 0)
+            .find(x => {
+              if (x.name.startsWith("toolbar")) {
+                var toolbarInfo = x.value;
+                var infoSplit = toolbarInfo.split(gToolbarInfoSeparators[0]);
+                if (infoSplit[0] == name) {
+                  infoSplit[1] = [
+                    infoSplit[1].split(gToolbarInfoSeparators[1], 1), !isVisible
+                  ].join(gToolbarInfoSeparators[1]);
+                  toolbox.toolbarset.setAttribute(
+                      x.name, infoSplit.join(gToolbarInfoSeparators[0]));
+                  document.persist(toolbox.toolbarset.id, x.name);
+                }
+              }
+            });
+      } catch (e) {
+        Components.utils.reportError(
+            "Customizable toolbars - persist the hiding attribute: " + e);
+      }
+    }
+  }
+
+  PlacesToolbarHelper.init();
+  BookmarkingUI.onToolbarVisibilityChange();
+  gBrowser.updateWindowResizers();
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+  updateAppButtonDisplay();
+#endif
+
+  if (isVisible)
+    ToolbarIconColor.inferFromText();
+}
+
+var AudioIndicator = {
+  init: function () {
+    Services.prefs.addObserver(this._prefName, this, false);
+    this.syncUI();
+  },
+
+  uninit: function () {
+    Services.prefs.removeObserver(this._prefName, this);
+  },
+
+  toggle: function () {
+    this.enabled = !Services.prefs.getBoolPref(this._prefName);
+  },
+
+  syncUI: function () {
+    document.getElementById("context_toggleMuteTab").setAttribute("hidden", this.enabled);
+    document.getElementById("key_toggleMute").setAttribute("disabled", this.enabled);
+  },
+
+  get enabled () {
+    return !Services.prefs.getBoolPref(this._prefName);
+  },
+
+  set enabled (val) {
+    Services.prefs.setBoolPref(this._prefName, !!val);
+    return val;
+  },
+
+  observe: function (subject, topic, data) {
+    if (topic == "nsPref:changed")
+      this.syncUI();
+  },
+
+  _prefName: "browser.tabs.showAudioPlayingIcon"
+}
+
+var TabsOnTop = {
+  init: function TabsOnTop_init() {
+    Services.prefs.addObserver(this._prefName, this, false);
+// Pale Moon: Stop Being a Derp, Mozilla (#3)
+    // Only show the toggle UI if the user disabled tabs on top.
+//    if (Services.prefs.getBoolPref(this._prefName)) {
+//      for (let item of document.querySelectorAll("menuitem[command=cmd_ToggleTabsOnTop]"))
+//        item.parentNode.removeChild(item);
+//    }
+  },
+
+  uninit: function TabsOnTop_uninit() {
+    Services.prefs.removeObserver(this._prefName, this);
+  },
+
+  toggle: function () {
+    this.enabled = !Services.prefs.getBoolPref(this._prefName);
+  },
+
+  syncUI: function () {
+    let userEnabled = Services.prefs.getBoolPref(this._prefName);
+    let enabled = userEnabled && gBrowser.tabContainer.visible;
+
+    document.getElementById("cmd_ToggleTabsOnTop")
+            .setAttribute("checked", userEnabled);
+
+    document.documentElement.setAttribute("tabsontop", enabled);
+    document.getElementById("navigator-toolbox").setAttribute("tabsontop", enabled);
+    document.getElementById("TabsToolbar").setAttribute("tabsontop", enabled);
+    document.getElementById("nav-bar").setAttribute("tabsontop", enabled);
+    gBrowser.tabContainer.setAttribute("tabsontop", enabled);
+    TabsInTitlebar.allowedBy("tabs-on-top", enabled);
+  },
+
+  get enabled () {
+    return gNavToolbox.getAttribute("tabsontop") == "true";
+  },
+
+  set enabled (val) {
+    Services.prefs.setBoolPref(this._prefName, !!val);
+    return val;
+  },
+
+  observe: function (subject, topic, data) {
+    if (topic == "nsPref:changed")
+      this.syncUI();
+  },
+
+  _prefName: "browser.tabs.onTop"
+}
+
+var TabsInTitlebar = {
+  init: function () {
+#ifdef CAN_DRAW_IN_TITLEBAR
+    this._readPref();
+    Services.prefs.addObserver(this._prefName, this, false);
+
+    // Don't trust the initial value of the sizemode attribute; wait for
+    // the resize event (handled in tabbrowser.xml).
+    this.allowedBy("sizemode", false);
+
+    this._initialized = true;
+#endif
+  },
+
+  allowedBy: function (condition, allow) {
+#ifdef CAN_DRAW_IN_TITLEBAR
+    if (allow) {
+      if (condition in this._disallowed) {
+        delete this._disallowed[condition];
+        this._update();
+      }
+    } else {
+      if (!(condition in this._disallowed)) {
+        this._disallowed[condition] = null;
+        this._update();
+      }
+    }
+#endif
+  },
+
+  get enabled() {
+    return document.documentElement.getAttribute("tabsintitlebar") == "true";
+  },
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+  observe: function (subject, topic, data) {
+    if (topic == "nsPref:changed")
+      this._readPref();
+  },
+
+  _initialized: false,
+  _disallowed: {},
+  _prefName: "browser.tabs.drawInTitlebar",
+
+  _readPref: function () {
+    this.allowedBy("pref",
+                   Services.prefs.getBoolPref(this._prefName));
+  },
+
+  _update: function () {
+    function $(id) document.getElementById(id);
+    function rect(ele) ele.getBoundingClientRect();
+
+    if (!this._initialized || window.fullScreen)
+      return;
+
+    let allowed = true;
+    for (let something in this._disallowed) {
+      allowed = false;
+      break;
+    }
+
+    if (allowed == this.enabled)
+      return;
+
+    let titlebar = $("titlebar");
+
+    if (allowed) {
+      let tabsToolbar       = $("TabsToolbar");
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+      let appmenuButtonBox  = $("appmenu-button-container");
+      this._sizePlaceholder("appmenu-button", rect(appmenuButtonBox).width);
+#endif
+      let captionButtonsBox = $("titlebar-buttonbox");
+      this._sizePlaceholder("caption-buttons", rect(captionButtonsBox).width);
+
+      let tabsToolbarRect = rect(tabsToolbar);
+      let titlebarTop = rect($("titlebar-content")).top;
+      titlebar.style.marginBottom = - Math.min(tabsToolbarRect.top - titlebarTop,
+                                               tabsToolbarRect.height) + "px";
+
+      document.documentElement.setAttribute("tabsintitlebar", "true");
+
+      if (!this._draghandle) {
+        let tmp = {};
+        Components.utils.import("resource://gre/modules/WindowDraggingUtils.jsm", tmp);
+        this._draghandle = new tmp.WindowDraggingElement(tabsToolbar);
+        this._draghandle.mouseDownCheck = function () {
+          return !this._dragBindingAlive && TabsInTitlebar.enabled;
+        };
+      }
+    } else {
+      document.documentElement.removeAttribute("tabsintitlebar");
+
+      titlebar.style.marginBottom = "";
+    }
+    
+    ToolbarIconColor.inferFromText();
+  },
+
+  _sizePlaceholder: function (type, width) {
+    Array.forEach(document.querySelectorAll(".titlebar-placeholder[type='"+ type +"']"),
+                  function (node) { node.width = width; });
+  },
+#endif
+
+  uninit: function () {
+#ifdef CAN_DRAW_IN_TITLEBAR
+    this._initialized = false;
+    Services.prefs.removeObserver(this._prefName, this);
+#endif
+  }
+};
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+function updateAppButtonDisplay() {
+  var displayAppButton =
+    !gInPrintPreviewMode &&
+    window.menubar.visible &&
+    document.getElementById("toolbar-menubar").getAttribute("autohide") == "true";
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+  document.getElementById("titlebar").hidden = !displayAppButton;
+
+  if (displayAppButton)
+    document.documentElement.setAttribute("chromemargin", "0,2,2,2");
+  else
+    document.documentElement.removeAttribute("chromemargin");
+
+  TabsInTitlebar.allowedBy("drawing-in-titlebar", displayAppButton);
+#else
+  document.getElementById("appmenu-toolbar-button").hidden =
+    !displayAppButton;
+#endif
+}
+#endif
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+function onTitlebarMaxClick() {
+  if (window.windowState == window.STATE_MAXIMIZED)
+    window.restore();
+  else
+    window.maximize();
+}
+#endif
+
+function displaySecurityInfo()
+{
+  BrowserPageInfo(null, "securityTab");
+}
+
+/**
+ * Opens or closes the sidebar identified by commandID.
+ *
+ * @param commandID a string identifying the sidebar to toggle; see the
+ *                  note below. (Optional if a sidebar is already open.)
+ * @param forceOpen boolean indicating whether the sidebar should be
+ *                  opened regardless of its current state (optional).
+ * @note
+ * We expect to find a xul:broadcaster element with the specified ID.
+ * The following attributes on that element may be used and/or modified:
+ *  - id           (required) the string to match commandID. The convention
+ *                 is to use this naming scheme: 'view<sidebar-name>Sidebar'.
+ *  - sidebarurl   (required) specifies the URL to load in this sidebar.
+ *  - sidebartitle or label (in that order) specify the title to
+ *                 display on the sidebar.
+ *  - checked      indicates whether the sidebar is currently displayed.
+ *                 Note that toggleSidebar updates this attribute when
+ *                 it changes the sidebar's visibility.
+ *  - group        this attribute must be set to "sidebar".
+ */
+function toggleSidebar(commandID, forceOpen) {
+
+  var sidebarBox = document.getElementById("sidebar-box");
+  if (!commandID)
+    commandID = sidebarBox.getAttribute("sidebarcommand");
+
+  var sidebarBroadcaster = document.getElementById(commandID);
+  var sidebar = document.getElementById("sidebar"); // xul:browser
+  var sidebarTitle = document.getElementById("sidebar-title");
+  var sidebarSplitter = document.getElementById("sidebar-splitter");
+
+  if (sidebarBroadcaster.getAttribute("checked") == "true") {
+    if (!forceOpen) {
+      // Replace the document currently displayed in the sidebar with about:blank
+      // so that we can free memory by unloading the page. We need to explicitly
+      // create a new content viewer because the old one doesn't get destroyed
+      // until about:blank has loaded (which does not happen as long as the
+      // element is hidden).
+      sidebar.setAttribute("src", "about:blank");
+      sidebar.docShell.createAboutBlankContentViewer(null);
+
+      sidebarBroadcaster.removeAttribute("checked");
+      sidebarBox.setAttribute("sidebarcommand", "");
+      sidebarTitle.value = "";
+      sidebarBox.hidden = true;
+      sidebarSplitter.hidden = true;
+      gBrowser.selectedBrowser.focus();
+    } else {
+      fireSidebarFocusedEvent();
+    }
+    return;
+  }
+
+  // now we need to show the specified sidebar
+
+  // ..but first update the 'checked' state of all sidebar broadcasters
+  var broadcasters = document.getElementsByAttribute("group", "sidebar");
+  for (let broadcaster of broadcasters) {
+    // skip elements that observe sidebar broadcasters and random
+    // other elements
+    if (broadcaster.localName != "broadcaster")
+      continue;
+
+    if (broadcaster != sidebarBroadcaster)
+      broadcaster.removeAttribute("checked");
+    else
+      sidebarBroadcaster.setAttribute("checked", "true");
+  }
+
+  sidebarBox.hidden = false;
+  sidebarSplitter.hidden = false;
+
+  var url = sidebarBroadcaster.getAttribute("sidebarurl");
+  var title = sidebarBroadcaster.getAttribute("sidebartitle");
+  if (!title)
+    title = sidebarBroadcaster.getAttribute("label");
+  sidebar.setAttribute("src", url); // kick off async load
+  sidebarBox.setAttribute("sidebarcommand", sidebarBroadcaster.id);
+  sidebarTitle.value = title;
+
+  // We set this attribute here in addition to setting it on the <browser>
+  // element itself, because the code in gBrowserInit.onUnload persists this
+  // attribute, not the "src" of the <browser id="sidebar">. The reason it
+  // does that is that we want to delay sidebar load a bit when a browser
+  // window opens. See delayedStartup().
+  sidebarBox.setAttribute("src", url);
+
+  if (sidebar.contentDocument.location.href != url)
+    sidebar.addEventListener("load", sidebarOnLoad, true);
+  else // older code handled this case, so we do it too
+    fireSidebarFocusedEvent();
+}
+
+function sidebarOnLoad(event) {
+  var sidebar = document.getElementById("sidebar");
+  sidebar.removeEventListener("load", sidebarOnLoad, true);
+  // We're handling the 'load' event before it bubbles up to the usual
+  // (non-capturing) event handlers. Let it bubble up before firing the
+  // SidebarFocused event.
+  setTimeout(fireSidebarFocusedEvent, 0);
+}
+
+/**
+ * Fire a "SidebarFocused" event on the sidebar's |window| to give the sidebar
+ * a chance to adjust focus as needed. An additional event is needed, because
+ * we don't want to focus the sidebar when it's opened on startup or in a new
+ * window, only when the user opens the sidebar.
+ */
+function fireSidebarFocusedEvent() {
+  var sidebar = document.getElementById("sidebar");
+  var event = document.createEvent("Events");
+  event.initEvent("SidebarFocused", true, false);
+  sidebar.contentWindow.dispatchEvent(event);
+}
+
+var gHomeButton = {
+  prefDomain: "browser.startup.homepage",
+  observe: function (aSubject, aTopic, aPrefName)
+  {
+    if (aTopic != "nsPref:changed" || aPrefName != this.prefDomain)
+      return;
+
+    this.updateTooltip();
+  },
+
+  updateTooltip: function (homeButton)
+  {
+    if (!homeButton)
+      homeButton = document.getElementById("home-button");
+    if (homeButton) {
+      var homePage = this.getHomePage();
+      homePage = homePage.replace(/\|/g,', ');
+      if (homePage.toLowerCase() == "about:home")
+        homeButton.setAttribute("tooltiptext", homeButton.getAttribute("aboutHomeOverrideTooltip"));
+      else
+        homeButton.setAttribute("tooltiptext", homePage);
+    }
+  },
+
+  getHomePage: function ()
+  {
+    var url;
+    try {
+      url = gPrefService.getComplexValue(this.prefDomain,
+                                Components.interfaces.nsIPrefLocalizedString).data;
+    } catch (e) {
+    }
+
+    // use this if we can't find the pref
+    if (!url) {
+      var configBundle = Services.strings
+                                 .createBundle("chrome://branding/locale/browserconfig.properties");
+      url = configBundle.GetStringFromName(this.prefDomain);
+    }
+
+    return url;
+  },
+
+  updatePersonalToolbarStyle: function (homeButton)
+  {
+    if (!homeButton)
+      homeButton = document.getElementById("home-button");
+    if (homeButton)
+      homeButton.className = homeButton.parentNode.id == "PersonalToolbar"
+                               || homeButton.parentNode.parentNode.id == "PersonalToolbar" ?
+                             homeButton.className.replace("toolbarbutton-1", "bookmark-item") :
+                             homeButton.className.replace("bookmark-item", "toolbarbutton-1");
+  }
+};
+
+/**
+ * Gets the selected text in the active browser. Leading and trailing
+ * whitespace is removed, and consecutive whitespace is replaced by a single
+ * space. A maximum of 150 characters will be returned, regardless of the value
+ * of aCharLen.
+ *
+ * @param aCharLen
+ *        The maximum number of characters to return.
+ */
+function getBrowserSelection(aCharLen) {
+  // selections of more than 150 characters aren't useful
+  const kMaxSelectionLen = 150;
+  const charLen = Math.min(aCharLen || kMaxSelectionLen, kMaxSelectionLen);
+  let commandDispatcher = document.commandDispatcher;
+
+  var focusedWindow = commandDispatcher.focusedWindow;
+  var selection = focusedWindow.getSelection().toString();
+  // try getting a selected text in text input.
+  if (!selection) {
+    let element = commandDispatcher.focusedElement;
+    var isOnTextInput = function isOnTextInput(elem) {
+      // we avoid to return a value if a selection is in password field.
+      // ref. bug 565717
+      return elem instanceof HTMLTextAreaElement ||
+             (elem instanceof HTMLInputElement && elem.mozIsTextField(true));
+    };
+
+    if (isOnTextInput(element)) {
+      selection = element.QueryInterface(Ci.nsIDOMNSEditableElement)
+                         .editor.selection.toString();
+    }
+  }
+
+  if (selection) {
+    if (selection.length > charLen) {
+      // only use the first charLen important chars. see bug 221361
+      var pattern = new RegExp("^(?:\\s*.){0," + charLen + "}");
+      pattern.test(selection);
+      selection = RegExp.lastMatch;
+    }
+
+    selection = selection.trim().replace(/\s+/g, " ");
+
+    if (selection.length > charLen)
+      selection = selection.substr(0, charLen);
+  }
+  return selection;
+}
+
+var gWebPanelURI;
+function openWebPanel(aTitle, aURI)
+{
+    // Ensure that the web panels sidebar is open.
+    toggleSidebar('viewWebPanelsSidebar', true);
+
+    // Set the title of the panel.
+    document.getElementById("sidebar-title").value = aTitle;
+
+    // Tell the Web Panels sidebar to load the bookmark.
+    var sidebar = document.getElementById("sidebar");
+    if (sidebar.docShell && sidebar.contentDocument && sidebar.contentDocument.getElementById('web-panels-browser')) {
+        sidebar.contentWindow.loadWebPanel(aURI);
+        if (gWebPanelURI) {
+            gWebPanelURI = "";
+            sidebar.removeEventListener("load", asyncOpenWebPanel, true);
+        }
+    }
+    else {
+        // The panel is still being constructed.  Attach an onload handler.
+        if (!gWebPanelURI)
+            sidebar.addEventListener("load", asyncOpenWebPanel, true);
+        gWebPanelURI = aURI;
+    }
+}
+
+function asyncOpenWebPanel(event)
+{
+    var sidebar = document.getElementById("sidebar");
+    if (gWebPanelURI && sidebar.contentDocument && sidebar.contentDocument.getElementById('web-panels-browser'))
+        sidebar.contentWindow.loadWebPanel(gWebPanelURI);
+    gWebPanelURI = "";
+    sidebar.removeEventListener("load", asyncOpenWebPanel, true);
+}
+
+/*
+ * - [ Dependencies ] ---------------------------------------------------------
+ *  utilityOverlay.js:
+ *    - gatherTextUnder
+ */
+
+/**
+ * Extracts linkNode and href for the current click target.
+ *
+ * @param event
+ *        The click event.
+ * @return [href, linkNode].
+ *
+ * @note linkNode will be null if the click wasn't on an anchor
+ *       element (or XLink).
+ */
+function hrefAndLinkNodeForClickEvent(event)
+{
+  function isHTMLLink(aNode)
+  {
+    // Be consistent with what nsContextMenu.js does.
+    return ((aNode instanceof HTMLAnchorElement && aNode.href) ||
+            (aNode instanceof HTMLAreaElement && aNode.href) ||
+            aNode instanceof HTMLLinkElement);
+  }
+
+  let node = event.target;
+  while (node && !isHTMLLink(node)) {
+    node = node.parentNode;
+  }
+
+  if (node)
+    return [node.href, node];
+
+  // If there is no linkNode, try simple XLink.
+  let href, baseURI;
+  node = event.target;
+  while (node && !href) {
+    if (node.nodeType == Node.ELEMENT_NODE &&
+        (node.localName == "a" ||
+         node.namespaceURI == "http://www.w3.org/1998/Math/MathML")) {
+      href = node.getAttributeNS("http://www.w3.org/1999/xlink", "href");
+      if (href) {
+        baseURI = node.baseURI;
+        break;
+      }
+    }
+    node = node.parentNode;
+  }
+
+  // In case of XLink, we don't return the node we got href from since
+  // callers expect <a>-like elements.
+  return [href ? makeURLAbsolute(baseURI, href) : null, null];
+}
+
+/**
+ * Called whenever the user clicks in the content area.
+ *
+ * @param event
+ *        The click event.
+ * @param isPanelClick
+ *        Whether the event comes from a web panel.
+ * @note default event is prevented if the click is handled.
+ */
+function contentAreaClick(event, isPanelClick)
+{
+  if (!event.isTrusted || event.defaultPrevented || event.button == 2)
+    return;
+
+  let [href, linkNode] = hrefAndLinkNodeForClickEvent(event);
+  if (!href) {
+    // Not a link, handle middle mouse navigation.
+    if (event.button == 1 &&
+        gPrefService.getBoolPref("middlemouse.contentLoadURL") &&
+        !gPrefService.getBoolPref("general.autoScroll")) {
+      middleMousePaste(event);
+      event.preventDefault();
+    }
+    return;
+  }
+
+  // This code only applies if we have a linkNode (i.e. clicks on real anchor
+  // elements, as opposed to XLink).
+  if (linkNode && event.button == 0 &&
+      !event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey) {
+    // A Web panel's links should target the main content area.  Do this
+    // if no modifier keys are down and if there's no target or the target
+    // equals _main (the IE convention) or _content (the Mozilla convention).
+    let target = linkNode.target;
+    let mainTarget = !target || target == "_content" || target  == "_main";
+    if (isPanelClick && mainTarget) {
+      // javascript and data links should be executed in the current browser.
+      if (linkNode.getAttribute("onclick") ||
+          href.startsWith("javascript:") ||
+          href.startsWith("data:"))
+        return;
+
+      try {
+        urlSecurityCheck(href, linkNode.ownerDocument.nodePrincipal);
+      }
+      catch(ex) {
+        // Prevent loading unsecure destinations.
+        event.preventDefault();
+        return;
+      }
+
+      loadURI(href, null, null, false);
+      event.preventDefault();
+      return;
+    }
+
+    if (linkNode.getAttribute("rel") == "sidebar") {
+      // This is the Opera convention for a special link that, when clicked,
+      // allows to add a sidebar panel.  The link's title attribute contains
+      // the title that should be used for the sidebar panel.
+      PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                       , type: "bookmark"
+                                       , uri: makeURI(href)
+                                       , title: linkNode.getAttribute("title")
+                                       , loadBookmarkInSidebar: true
+                                       , hiddenRows: [ "description"
+                                                     , "location"
+                                                     , "keyword" ]
+                                       }, window);
+      event.preventDefault();
+      return;
+    }
+  }
+
+  handleLinkClick(event, href, linkNode);
+
+  // Mark the page as a user followed link.  This is done so that history can
+  // distinguish automatic embed visits from user activated ones.  For example
+  // pages loaded in frames are embed visits and lost with the session, while
+  // visits across frames should be preserved.
+  try {
+    if (!PrivateBrowsingUtils.isWindowPrivate(window))
+      PlacesUIUtils.markPageAsFollowedLink(href);
+  } catch (ex) { /* Skip invalid URIs. */ }
+}
+
+/**
+ * Handles clicks on links.
+ *
+ * @return true if the click event was handled, false otherwise.
+ */
+function handleLinkClick(event, href, linkNode) {
+  if (event.button == 2) // right click
+    return false;
+
+  var where = whereToOpenLink(event);
+  if (where == "current")
+    return false;
+
+  var doc = event.target.ownerDocument;
+
+  if (where == "save") {
+    saveURL(href, linkNode ? gatherTextUnder(linkNode) : "", null, true,
+            true, doc.documentURIObject, doc);
+    event.preventDefault();
+    return true;
+  }
+
+  urlSecurityCheck(href, doc.nodePrincipal);
+  openLinkIn(href, where, { referrerURI: doc.documentURIObject,
+                            charset: doc.characterSet,
+                            referrerPolicy: doc.referrerPolicy,
+                            originPrincipal: doc.nodePrincipal,
+                            triggeringPrincipal: doc.nodePrincipal });
+  event.preventDefault();
+  return true;
+}
+
+function middleMousePaste(event) {
+  let clipboard = readFromClipboard();
+  if (!clipboard)
+    return;
+
+  // Strip embedded newlines and surrounding whitespace, to match the URL
+  // bar's behavior (stripsurroundingwhitespace)
+  clipboard = clipboard.replace(/\s*\n\s*/g, "");
+
+  // if it's not the current tab, we don't need to do anything because the 
+  // browser doesn't exist.
+  let where = whereToOpenLink(event, true, false);
+  let lastLocationChange;
+  if (where == "current") {
+    lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
+  }
+
+  getShortcutOrURIAndPostData(clipboard).then(data => {
+    try {
+      makeURI(data.url);
+    } catch (ex) {
+      // Not a valid URI.
+      return;
+    }
+
+    try {
+      addToUrlbarHistory(data.url);
+    } catch (ex) {
+      // Things may go wrong when adding url to session history,
+      // but don't let that interfere with the loading of the url.
+      Cu.reportError(ex);
+    }
+
+    if (where != "current" ||
+        lastLocationChange == gBrowser.selectedBrowser.lastLocationChange) {
+      openUILink(data.url, event,
+                 { ignoreButton: true,
+                   disallowInheritPrincipal: !data.mayInheritPrincipal,
+                   initiatingDoc: event ? event.target.ownerDocument : null });
+    }
+  });
+
+  event.stopPropagation();
+}
+
+// handleDroppedLink has the following 2 overloads:
+//   handleDroppedLink(event, url, name)
+//   handleDroppedLink(event, links)
+function handleDroppedLink(event, urlOrLinks, name)
+{
+  let links;
+  if (Array.isArray(urlOrLinks)) {
+    links = urlOrLinks;
+  } else {
+    links = [{ url: urlOrLinks, name, type: "" }];
+  }
+
+  let lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
+
+  let inBackground = Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+  if (event.shiftKey)
+    inBackground = !inBackground;
+
+  Task.spawn(function*() {
+    let urls = [];
+    let postDatas = [];
+    for (let link of links) {
+      let data = yield getShortcutOrURIAndPostData(link.url);
+      urls.push(data.url);
+      postDatas.push(data.postData);
+    }
+    if (lastLocationChange == gBrowser.selectedBrowser.lastLocationChange) {
+      gBrowser.loadTabs(urls, {
+        inBackground,
+        replace: true,
+        allowThirdPartyFixup: false,
+        postDatas,
+      });
+    }
+  });
+
+  // Keep the event from being handled by the dragDrop listeners
+  // built-in to goanna if they happen to be above us.
+  event.preventDefault();
+};
+
+function MultiplexHandler(event)
+{ try {
+    var node = event.target;
+    var name = node.getAttribute('name');
+
+    if (name == 'detectorGroup') {
+        BrowserCharsetReload();
+        SelectDetector(event, false);
+    } else if (name == 'charsetGroup') {
+        var charset = node.getAttribute('id');
+        charset = charset.substring(charset.indexOf('charset.') + 'charset.'.length);
+        BrowserSetForcedCharacterSet(charset);
+    } else if (name == 'charsetCustomize') {
+        //do nothing - please remove this else statement, once the charset prefs moves to the pref window
+    } else {
+        BrowserSetForcedCharacterSet(node.getAttribute('id'));
+    }
+    } catch(ex) { alert(ex); }
+}
+
+function SelectDetector(event, doReload)
+{
+    var uri =  event.target.getAttribute("id");
+    var prefvalue = uri.substring(uri.indexOf('chardet.') + 'chardet.'.length);
+    if ("off" == prefvalue) { // "off" is special value to turn off the detectors
+        prefvalue = "";
+    }
+
+    try {
+        var str =  Cc["@mozilla.org/supports-string;1"].
+                   createInstance(Ci.nsISupportsString);
+
+        str.data = prefvalue;
+        gPrefService.setComplexValue("intl.charset.detector", Ci.nsISupportsString, str);
+        if (doReload)
+          window.content.location.reload();
+    }
+    catch (ex) {
+        dump("Failed to set the intl.charset.detector preference.\n");
+    }
+}
+
+function BrowserSetForcedCharacterSet(aCharset)
+{
+  gBrowser.docShell.charset = aCharset;
+  // Save the forced character-set
+  if (!PrivateBrowsingUtils.isWindowPrivate(window))
+    PlacesUtils.setCharsetForURI(getWebNavigation().currentURI, aCharset);
+  BrowserCharsetReload();
+}
+
+function BrowserCharsetReload()
+{
+  BrowserReloadWithFlags(nsIWebNavigation.LOAD_FLAGS_CHARSET_CHANGE);
+}
+
+function charsetMenuGetElement(parent, id) {
+  return parent.getElementsByAttribute("id", id)[0];
+}
+
+function UpdateCurrentCharset(target) {
+    // extract the charset from DOM
+    var wnd = document.commandDispatcher.focusedWindow;
+    if ((window == wnd) || (wnd == null)) wnd = window.content;
+
+    // Uncheck previous item
+    if (gPrevCharset) {
+        var pref_item = charsetMenuGetElement(target, "charset." + gPrevCharset);
+        if (pref_item)
+          pref_item.setAttribute('checked', 'false');
+    }
+
+    var menuitem = charsetMenuGetElement(target, "charset." + wnd.document.characterSet);
+    if (menuitem) {
+        menuitem.setAttribute('checked', 'true');
+    }
+}
+
+function UpdateCharsetDetector(target) {
+  var prefvalue;
+
+  try {
+    prefvalue = gPrefService.getComplexValue("intl.charset.detector", Ci.nsIPrefLocalizedString).data;
+  }
+  catch (ex) {}
+
+  if (!prefvalue)
+    prefvalue = "off";
+
+  var menuitem = charsetMenuGetElement(target, "chardet." + prefvalue);
+  if (menuitem)
+    menuitem.setAttribute("checked", "true");
+}
+
+function UpdateMenus(event) {
+  UpdateCurrentCharset(event.target);
+  UpdateCharsetDetector(event.target);
+}
+
+function charsetLoadListener() {
+  var charset = window.content.document.characterSet;
+
+  if (charset.length > 0 && (charset != gLastBrowserCharset)) {
+    gPrevCharset = gLastBrowserCharset;
+    gLastBrowserCharset = charset;
+  }
+}
+
+var gPageStyleMenu = {
+
+  _getAllStyleSheets: function (frameset) {
+    var styleSheetsArray = Array.slice(frameset.document.styleSheets);
+    for (let i = 0; i < frameset.frames.length; i++) {
+      let frameSheets = this._getAllStyleSheets(frameset.frames[i]);
+      styleSheetsArray = styleSheetsArray.concat(frameSheets);
+    }
+    return styleSheetsArray;
+  },
+
+  fillPopup: function (menuPopup) {
+    var noStyle = menuPopup.firstChild;
+    var persistentOnly = noStyle.nextSibling;
+    var sep = persistentOnly.nextSibling;
+    while (sep.nextSibling)
+      menuPopup.removeChild(sep.nextSibling);
+
+    var styleSheets = this._getAllStyleSheets(window.content);
+    var currentStyleSheets = {};
+    var styleDisabled = getMarkupDocumentViewer().authorStyleDisabled;
+    var haveAltSheets = false;
+    var altStyleSelected = false;
+
+    for (let currentStyleSheet of styleSheets) {
+      if (!currentStyleSheet.title)
+        continue;
+
+      // Skip any stylesheets whose media attribute doesn't match.
+      if (currentStyleSheet.media.length > 0) {
+        let mediaQueryList = currentStyleSheet.media.mediaText;
+        if (!window.content.matchMedia(mediaQueryList).matches)
+          continue;
+      }
+
+      if (!currentStyleSheet.disabled)
+        altStyleSelected = true;
+
+      haveAltSheets = true;
+
+      let lastWithSameTitle = null;
+      if (currentStyleSheet.title in currentStyleSheets)
+        lastWithSameTitle = currentStyleSheets[currentStyleSheet.title];
+
+      if (!lastWithSameTitle) {
+        let menuItem = document.createElement("menuitem");
+        menuItem.setAttribute("type", "radio");
+        menuItem.setAttribute("label", currentStyleSheet.title);
+        menuItem.setAttribute("data", currentStyleSheet.title);
+        menuItem.setAttribute("checked", !currentStyleSheet.disabled && !styleDisabled);
+        menuItem.setAttribute("oncommand", "gPageStyleMenu.switchStyleSheet(this.getAttribute('data'));");
+        menuPopup.appendChild(menuItem);
+        currentStyleSheets[currentStyleSheet.title] = menuItem;
+      } else if (currentStyleSheet.disabled) {
+        lastWithSameTitle.removeAttribute("checked");
+      }
+    }
+
+    noStyle.setAttribute("checked", styleDisabled);
+    persistentOnly.setAttribute("checked", !altStyleSelected && !styleDisabled);
+    persistentOnly.hidden = (window.content.document.preferredStyleSheetSet) ? haveAltSheets : false;
+    sep.hidden = (noStyle.hidden && persistentOnly.hidden) || !haveAltSheets;
+  },
+
+  _stylesheetInFrame: function (frame, title) {
+    return Array.some(frame.document.styleSheets,
+                      function (stylesheet) stylesheet.title == title);
+  },
+
+  _stylesheetSwitchFrame: function (frame, title) {
+    var docStyleSheets = frame.document.styleSheets;
+
+    for (let i = 0; i < docStyleSheets.length; ++i) {
+      let docStyleSheet = docStyleSheets[i];
+
+      if (docStyleSheet.title)
+        docStyleSheet.disabled = (docStyleSheet.title != title);
+      else if (docStyleSheet.disabled)
+        docStyleSheet.disabled = false;
+    }
+  },
+
+  _stylesheetSwitchAll: function (frameset, title) {
+    if (!title || this._stylesheetInFrame(frameset, title))
+      this._stylesheetSwitchFrame(frameset, title);
+
+    for (let i = 0; i < frameset.frames.length; i++)
+      this._stylesheetSwitchAll(frameset.frames[i], title);
+  },
+
+  switchStyleSheet: function (title, contentWindow) {
+    getMarkupDocumentViewer().authorStyleDisabled = false;
+    this._stylesheetSwitchAll(contentWindow || content, title);
+  },
+
+  disableStyle: function () {
+    getMarkupDocumentViewer().authorStyleDisabled = true;
+  },
+};
+
+/* Legacy global page-style functions */
+var getAllStyleSheets   = gPageStyleMenu._getAllStyleSheets.bind(gPageStyleMenu);
+var stylesheetFillPopup = gPageStyleMenu.fillPopup.bind(gPageStyleMenu);
+function stylesheetSwitchAll(contentWindow, title) {
+  gPageStyleMenu.switchStyleSheet(title, contentWindow);
+}
+function setStyleDisabled(disabled) {
+  if (disabled)
+    gPageStyleMenu.disableStyle();
+}
+
+
+var BrowserOffline = {
+  _inited: false,
+
+  /////////////////////////////////////////////////////////////////////////////
+  // BrowserOffline Public Methods
+  init: function ()
+  {
+    if (!this._uiElement)
+      this._uiElement = document.getElementById("workOfflineMenuitemState");
+
+    Services.obs.addObserver(this, "network:offline-status-changed", false);
+
+    this._updateOfflineUI(Services.io.offline);
+
+    this._inited = true;
+  },
+
+  uninit: function ()
+  {
+    if (this._inited) {
+      Services.obs.removeObserver(this, "network:offline-status-changed");
+    }
+  },
+
+  toggleOfflineStatus: function ()
+  {
+    var ioService = Services.io;
+
+    // Stop automatic management of the offline status
+    try {
+      ioService.manageOfflineStatus = false;
+    } catch (ex) {
+    }
+
+    if (!ioService.offline && !this._canGoOffline()) {
+      this._updateOfflineUI(false);
+      return;
+    }
+
+    ioService.offline = !ioService.offline;
+  },
+
+  /////////////////////////////////////////////////////////////////////////////
+  // nsIObserver
+  observe: function (aSubject, aTopic, aState)
+  {
+    if (aTopic != "network:offline-status-changed")
+      return;
+
+    this._updateOfflineUI(aState == "offline");
+  },
+
+  /////////////////////////////////////////////////////////////////////////////
+  // BrowserOffline Implementation Methods
+  _canGoOffline: function ()
+  {
+    try {
+      var cancelGoOffline = Cc["@mozilla.org/supports-PRBool;1"].createInstance(Ci.nsISupportsPRBool);
+      Services.obs.notifyObservers(cancelGoOffline, "offline-requested", null);
+
+      // Something aborted the quit process.
+      if (cancelGoOffline.data)
+        return false;
+    }
+    catch (ex) {
+    }
+
+    return true;
+  },
+
+  _uiElement: null,
+  _updateOfflineUI: function (aOffline)
+  {
+    var offlineLocked = gPrefService.prefIsLocked("network.online");
+    if (offlineLocked)
+      this._uiElement.setAttribute("disabled", "true");
+
+    this._uiElement.setAttribute("checked", aOffline);
+  }
+};
+
+var OfflineApps = {
+  /////////////////////////////////////////////////////////////////////////////
+  // OfflineApps Public Methods
+  init: function ()
+  {
+    Services.obs.addObserver(this, "offline-cache-update-completed", false);
+  },
+
+  uninit: function ()
+  {
+    Services.obs.removeObserver(this, "offline-cache-update-completed");
+  },
+
+  handleEvent: function(event) {
+    if (event.type == "MozApplicationManifest") {
+      this.offlineAppRequested(event.originalTarget.defaultView);
+    }
+  },
+
+  /////////////////////////////////////////////////////////////////////////////
+  // OfflineApps Implementation Methods
+
+  // XXX: _getBrowserWindowForContentWindow and _getBrowserForContentWindow
+  // were taken from browser/components/feeds/src/WebContentConverter.
+  _getBrowserWindowForContentWindow: function(aContentWindow) {
+    return aContentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
+                         .getInterface(Ci.nsIWebNavigation)
+                         .QueryInterface(Ci.nsIDocShellTreeItem)
+                         .rootTreeItem
+                         .QueryInterface(Ci.nsIInterfaceRequestor)
+                         .getInterface(Ci.nsIDOMWindow)
+                         .wrappedJSObject;
+  },
+
+  _getBrowserForContentWindow: function(aBrowserWindow, aContentWindow) {
+    // This depends on pseudo APIs of browser.js and tabbrowser.xml
+    aContentWindow = aContentWindow.top;
+    var browsers = aBrowserWindow.gBrowser.browsers;
+    for (let browser of browsers) {
+      if (browser.contentWindow == aContentWindow)
+        return browser;
+    }
+    // handle other browser/iframe elements that may need popupnotifications
+    let browser = aContentWindow
+                          .QueryInterface(Ci.nsIInterfaceRequestor)
+                          .getInterface(Ci.nsIWebNavigation)
+                          .QueryInterface(Ci.nsIDocShell)
+                          .chromeEventHandler;
+    if (browser.getAttribute("popupnotificationanchor"))
+      return browser;
+    return null;
+  },
+
+  _getManifestURI: function(aWindow) {
+    if (!aWindow.document.documentElement)
+      return null;
+
+    var attr = aWindow.document.documentElement.getAttribute("manifest");
+    if (!attr)
+      return null;
+
+    try {
+      var contentURI = makeURI(aWindow.location.href, null, null);
+      return makeURI(attr, aWindow.document.characterSet, contentURI);
+    } catch (e) {
+      return null;
+    }
+  },
+
+  // A cache update isn't tied to a specific window.  Try to find
+  // the best browser in which to warn the user about space usage
+  _getBrowserForCacheUpdate: function(aCacheUpdate) {
+    // Prefer the current browser
+    var uri = this._getManifestURI(content);
+    if (uri && uri.equals(aCacheUpdate.manifestURI)) {
+      return gBrowser.selectedBrowser;
+    }
+
+    var browsers = gBrowser.browsers;
+    for (let browser of browsers) {
+      uri = this._getManifestURI(browser.contentWindow);
+      if (uri && uri.equals(aCacheUpdate.manifestURI)) {
+        return browser;
+      }
+    }
+
+    // is this from a non-tab browser/iframe?
+    browsers = document.querySelectorAll("iframe[popupnotificationanchor] | browser[popupnotificationanchor]");
+    for (let browser of browsers) {
+      uri = this._getManifestURI(browser.contentWindow);
+      if (uri && uri.equals(aCacheUpdate.manifestURI)) {
+        return browser;
+      }
+    }
+
+    return null;
+  },
+
+  _warnUsage: function(aBrowser, aURI) {
+    if (!aBrowser)
+      return;
+
+    let mainAction = {
+      label: gNavigatorBundle.getString("offlineApps.manageUsage"),
+      accessKey: gNavigatorBundle.getString("offlineApps.manageUsageAccessKey"),
+      callback: OfflineApps.manage
+    };
+
+    let warnQuota = gPrefService.getIntPref("offline-apps.quota.warn");
+    let message = gNavigatorBundle.getFormattedString("offlineApps.usage",
+                                                      [ aURI.host,
+                                                        warnQuota / 1024 ]);
+
+    let anchorID = "indexedDB-notification-icon";
+    PopupNotifications.show(aBrowser, "offline-app-usage", message,
+                            anchorID, mainAction);
+
+    // Now that we've warned once, prevent the warning from showing up
+    // again.
+    Services.perms.add(aURI, "offline-app",
+                       Ci.nsIOfflineCacheUpdateService.ALLOW_NO_WARN);
+  },
+
+  // XXX: duplicated in preferences/advanced.js
+  _getOfflineAppUsage: function (host, groups)
+  {
+    var cacheService = Cc["@mozilla.org/network/application-cache-service;1"].
+                       getService(Ci.nsIApplicationCacheService);
+    if (!groups)
+      groups = cacheService.getGroups();
+
+    var usage = 0;
+    for (let group of groups) {
+      var uri = Services.io.newURI(group, null, null);
+      if (uri.asciiHost == host) {
+        var cache = cacheService.getActiveCache(group);
+        usage += cache.usage;
+      }
+    }
+
+    return usage;
+  },
+
+  _checkUsage: function(aURI) {
+    // if the user has already allowed excessive usage, don't bother checking
+    if (Services.perms.testExactPermission(aURI, "offline-app") !=
+        Ci.nsIOfflineCacheUpdateService.ALLOW_NO_WARN) {
+      var usage = this._getOfflineAppUsage(aURI.asciiHost);
+      var warnQuota = gPrefService.getIntPref("offline-apps.quota.warn");
+      if (usage >= warnQuota * 1024) {
+        return true;
+      }
+    }
+
+    return false;
+  },
+
+  offlineAppRequested: function(aContentWindow) {
+    if (!gPrefService.getBoolPref("browser.offline-apps.notify")) {
+      return;
+    }
+
+    let browserWindow = this._getBrowserWindowForContentWindow(aContentWindow);
+    let browser = this._getBrowserForContentWindow(browserWindow,
+                                                   aContentWindow);
+
+    let currentURI = aContentWindow.document.documentURIObject;
+
+    // don't bother showing UI if the user has already made a decision
+    if (Services.perms.testExactPermission(currentURI, "offline-app") != Services.perms.UNKNOWN_ACTION)
+      return;
+
+    try {
+      if (gPrefService.getBoolPref("offline-apps.allow_by_default")) {
+        // all pages can use offline capabilities, no need to ask the user
+        return;
+      }
+    } catch(e) {
+      // this pref isn't set by default, ignore failures
+    }
+
+    let host = currentURI.asciiHost;
+    let notificationID = "offline-app-requested-" + host;
+    let notification = PopupNotifications.getNotification(notificationID, browser);
+
+    if (notification) {
+      notification.options.documents.push(aContentWindow.document);
+    } else {
+      let mainAction = {
+        label: gNavigatorBundle.getString("offlineApps.allow"),
+        accessKey: gNavigatorBundle.getString("offlineApps.allowAccessKey"),
+        callback: function() {
+          for (let document of notification.options.documents) {
+            OfflineApps.allowSite(document);
+          }
+        }
+      };
+      let secondaryActions = [{
+        label: gNavigatorBundle.getString("offlineApps.never"),
+        accessKey: gNavigatorBundle.getString("offlineApps.neverAccessKey"),
+        callback: function() {
+          for (let document of notification.options.documents) {
+            OfflineApps.disallowSite(document);
+          }
+        }
+      }];
+      let message = gNavigatorBundle.getFormattedString("offlineApps.available",
+                                                        [ host ]);
+      let anchorID = "indexedDB-notification-icon";
+      let options= {
+        documents : [ aContentWindow.document ]
+      };
+      notification = PopupNotifications.show(browser, notificationID, message,
+                                             anchorID, mainAction,
+                                             secondaryActions, options);
+    }
+  },
+
+  allowSite: function(aDocument) {
+    Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.ALLOW_ACTION);
+
+    // When a site is enabled while loading, manifest resources will
+    // start fetching immediately.  This one time we need to do it
+    // ourselves.
+    this._startFetching(aDocument);
+  },
+
+  disallowSite: function(aDocument) {
+    Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.DENY_ACTION);
+  },
+
+  manage: function() {
+    openAdvancedPreferences("networkTab");
+  },
+
+  _startFetching: function(aDocument) {
+    if (!aDocument.documentElement)
+      return;
+
+    var manifest = aDocument.documentElement.getAttribute("manifest");
+    if (!manifest)
+      return;
+
+    var manifestURI = makeURI(manifest, aDocument.characterSet,
+                              aDocument.documentURIObject);
+
+    var updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"].
+                        getService(Ci.nsIOfflineCacheUpdateService);
+    updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject, window);
+  },
+
+  /////////////////////////////////////////////////////////////////////////////
+  // nsIObserver
+  observe: function (aSubject, aTopic, aState)
+  {
+    if (aTopic == "offline-cache-update-completed") {
+      var cacheUpdate = aSubject.QueryInterface(Ci.nsIOfflineCacheUpdate);
+
+      var uri = cacheUpdate.manifestURI;
+      if (OfflineApps._checkUsage(uri)) {
+        var browser = this._getBrowserForCacheUpdate(cacheUpdate);
+        if (browser) {
+          OfflineApps._warnUsage(browser, cacheUpdate.manifestURI);
+        }
+      }
+    }
+  }
+};
+
+var IndexedDBPromptHelper = {
+  _permissionsPrompt: "indexedDB-permissions-prompt",
+  _permissionsResponse: "indexedDB-permissions-response",
+
+  _quotaPrompt: "indexedDB-quota-prompt",
+  _quotaResponse: "indexedDB-quota-response",
+  _quotaCancel: "indexedDB-quota-cancel",
+
+  _notificationIcon: "indexedDB-notification-icon",
+
+  init:
+  function IndexedDBPromptHelper_init() {
+    Services.obs.addObserver(this, this._permissionsPrompt, false);
+    Services.obs.addObserver(this, this._quotaPrompt, false);
+    Services.obs.addObserver(this, this._quotaCancel, false);
+  },
+
+  uninit:
+  function IndexedDBPromptHelper_uninit() {
+    Services.obs.removeObserver(this, this._permissionsPrompt);
+    Services.obs.removeObserver(this, this._quotaPrompt);
+    Services.obs.removeObserver(this, this._quotaCancel);
+  },
+
+  observe:
+  function IndexedDBPromptHelper_observe(subject, topic, data) {
+    if (topic != this._permissionsPrompt &&
+        topic != this._quotaPrompt &&
+        topic != this._quotaCancel) {
+      throw new Error("Unexpected topic!");
+    }
+
+    var requestor = subject.QueryInterface(Ci.nsIInterfaceRequestor);
+
+    var contentWindow = requestor.getInterface(Ci.nsIDOMWindow);
+    var contentDocument = contentWindow.document;
+    var browserWindow =
+      OfflineApps._getBrowserWindowForContentWindow(contentWindow);
+
+    if (browserWindow != window) {
+      // Must belong to some other window.
+      return;
+    }
+
+    var browser =
+      OfflineApps._getBrowserForContentWindow(browserWindow, contentWindow);
+
+    var host = contentDocument.documentURIObject.asciiHost;
+
+    var message;
+    var responseTopic;
+    if (topic == this._permissionsPrompt) {
+      message = gNavigatorBundle.getFormattedString("offlineApps.available",
+                                                    [ host ]);
+      responseTopic = this._permissionsResponse;
+    }
+    else if (topic == this._quotaPrompt) {
+      message = gNavigatorBundle.getFormattedString("indexedDB.usage",
+                                                    [ host, data ]);
+      responseTopic = this._quotaResponse;
+    }
+    else if (topic == this._quotaCancel) {
+      responseTopic = this._quotaResponse;
+    }
+
+    const hiddenTimeoutDuration = 30000; // 30 seconds
+    const firstTimeoutDuration = 300000; // 5 minutes
+
+    var timeoutId;
+
+    var observer = requestor.getInterface(Ci.nsIObserver);
+
+    var mainAction = {
+      label: gNavigatorBundle.getString("offlineApps.allow"),
+      accessKey: gNavigatorBundle.getString("offlineApps.allowAccessKey"),
+      callback: function() {
+        clearTimeout(timeoutId);
+        observer.observe(null, responseTopic,
+                         Ci.nsIPermissionManager.ALLOW_ACTION);
+      }
+    };
+
+    var secondaryActions = [
+      {
+        label: gNavigatorBundle.getString("offlineApps.never"),
+        accessKey: gNavigatorBundle.getString("offlineApps.neverAccessKey"),
+        callback: function() {
+          clearTimeout(timeoutId);
+          observer.observe(null, responseTopic,
+                           Ci.nsIPermissionManager.DENY_ACTION);
+        }
+      }
+    ];
+
+    // This will be set to the result of PopupNotifications.show() below, or to
+    // the result of PopupNotifications.getNotification() if this is a
+    // quotaCancel notification.
+    var notification;
+
+    function timeoutNotification() {
+      // Remove the notification.
+      if (notification) {
+        notification.remove();
+      }
+
+      // Clear all of our timeout stuff. We may be called directly, not just
+      // when the timeout actually elapses.
+      clearTimeout(timeoutId);
+
+      // And tell the page that the popup timed out.
+      observer.observe(null, responseTopic,
+                       Ci.nsIPermissionManager.UNKNOWN_ACTION);
+    }
+
+    var options = {
+      eventCallback: function(state) {
+        // Don't do anything if the timeout has not been set yet.
+        if (!timeoutId) {
+          return;
+        }
+
+        // If the popup is being dismissed start the short timeout.
+        if (state == "dismissed") {
+          clearTimeout(timeoutId);
+          timeoutId = setTimeout(timeoutNotification, hiddenTimeoutDuration);
+          return;
+        }
+
+        // If the popup is being re-shown then clear the timeout allowing
+        // unlimited waiting.
+        if (state == "shown") {
+          clearTimeout(timeoutId);
+        }
+      }
+    };
+
+    if (topic == this._quotaCancel) {
+      notification = PopupNotifications.getNotification(this._quotaPrompt,
+                                                        browser);
+      timeoutNotification();
+      return;
+    }
+
+    notification = PopupNotifications.show(browser, topic, message,
+                                           this._notificationIcon, mainAction,
+                                           secondaryActions, options);
+
+    // Set the timeoutId after the popup has been created, and use the long
+    // timeout value. If the user doesn't notice the popup after this amount of
+    // time then it is most likely not visible and we want to alert the page.
+    timeoutId = setTimeout(timeoutNotification, firstTimeoutDuration);
+  }
+};
+
+function WindowIsClosing()
+{
+  let event = document.createEvent("Events");
+  event.initEvent("WindowIsClosing", true, true);
+  if (!window.dispatchEvent(event))
+    return false;
+
+  if (!closeWindow(false, warnAboutClosingWindow))
+    return false;
+
+  for (let browser of gBrowser.browsers) {
+    let ds = browser.docShell;
+    if (ds.contentViewer && !ds.contentViewer.permitUnload())
+      return false;
+  }
+
+  return true;
+}
+
+/**
+ * Checks if this is the last full *browser* window around. If it is, this will
+ * be communicated like quitting. Otherwise, we warn about closing multiple tabs.
+ * @returns true if closing can proceed, false if it got cancelled.
+ */
+function warnAboutClosingWindow() {
+  // Popups aren't considered full browser windows.
+  let isPBWindow = PrivateBrowsingUtils.isWindowPrivate(window);
+  if (!isPBWindow && !toolbar.visible)
+    return gBrowser.warnAboutClosingTabs(gBrowser.closingTabsEnum.ALL);
+
+  // Figure out if there's at least one other browser window around.
+  let e = Services.wm.getEnumerator("navigator:browser");
+  let otherPBWindowExists = false;
+  let nonPopupPresent = false;
+  while (e.hasMoreElements()) {
+    let win = e.getNext();
+    if (win != window) {
+      if (isPBWindow && PrivateBrowsingUtils.isWindowPrivate(win))
+        otherPBWindowExists = true;
+      if (win.toolbar.visible)
+        nonPopupPresent = true;
+      // If the current window is not in private browsing mode we don't need to 
+      // look for other pb windows, we can leave the loop when finding the 
+      // first non-popup window. If however the current window is in private 
+      // browsing mode then we need at least one other pb and one non-popup 
+      // window to break out early.
+      if ((!isPBWindow || otherPBWindowExists) && nonPopupPresent)
+        break;
+    }
+  }
+
+  if (isPBWindow && !otherPBWindowExists) {
+    let exitingCanceled = Cc["@mozilla.org/supports-PRBool;1"].
+                          createInstance(Ci.nsISupportsPRBool);
+    exitingCanceled.data = false;
+    Services.obs.notifyObservers(exitingCanceled,
+                                 "last-pb-context-exiting",
+                                 null);
+    if (exitingCanceled.data)
+      return false;
+  }
+
+  if (nonPopupPresent) {
+    return isPBWindow || gBrowser.warnAboutClosingTabs(gBrowser.closingTabsEnum.ALL);
+  }
+
+  let os = Services.obs;
+
+  let closingCanceled = Cc["@mozilla.org/supports-PRBool;1"].
+                        createInstance(Ci.nsISupportsPRBool);
+  os.notifyObservers(closingCanceled,
+                     "browser-lastwindow-close-requested", null);
+  if (closingCanceled.data)
+    return false;
+
+  os.notifyObservers(null, "browser-lastwindow-close-granted", null);
+
+#ifdef XP_MACOSX
+  // OS X doesn't quit the application when the last window is closed, but keeps
+  // the session alive. Hence don't prompt users to save tabs, but warn about
+  // closing multiple tabs.
+  return isPBWindow || gBrowser.warnAboutClosingTabs(gBrowser.closingTabsEnum.ALL);
+#else
+  return true;
+#endif
+}
+
+var MailIntegration = {
+  sendLinkForWindow: function (aWindow) {
+    this.sendMessage(aWindow.location.href,
+                     aWindow.document.title);
+  },
+
+  sendMessage: function (aBody, aSubject) {
+    // generate a mailto url based on the url and the url's title
+    var mailtoUrl = "mailto:";
+    if (aBody) {
+      mailtoUrl += "?body=" + encodeURIComponent(aBody);
+      mailtoUrl += "&subject=" + encodeURIComponent(aSubject);
+    }
+
+    var uri = makeURI(mailtoUrl);
+
+    // now pass this uri to the operating system
+    this._launchExternalUrl(uri);
+  },
+
+  // a generic method which can be used to pass arbitrary urls to the operating
+  // system.
+  // aURL --> a nsIURI which represents the url to launch
+  _launchExternalUrl: function (aURL) {
+    var extProtocolSvc =
+       Cc["@mozilla.org/uriloader/external-protocol-service;1"]
+         .getService(Ci.nsIExternalProtocolService);
+    if (extProtocolSvc)
+      extProtocolSvc.loadUrl(aURL);
+  }
+};
+
+function BrowserOpenAddonsMgr(aView) {
+  if (aView) {
+    let emWindow;
+    let browserWindow;
+
+    var receivePong = function receivePong(aSubject, aTopic, aData) {
+      let browserWin = aSubject.QueryInterface(Ci.nsIInterfaceRequestor)
+                               .getInterface(Ci.nsIWebNavigation)
+                               .QueryInterface(Ci.nsIDocShellTreeItem)
+                               .rootTreeItem
+                               .QueryInterface(Ci.nsIInterfaceRequestor)
+                               .getInterface(Ci.nsIDOMWindow);
+      if (!emWindow || browserWin == window /* favor the current window */) {
+        emWindow = aSubject;
+        browserWindow = browserWin;
+      }
+    }
+    Services.obs.addObserver(receivePong, "EM-pong", false);
+    Services.obs.notifyObservers(null, "EM-ping", "");
+    Services.obs.removeObserver(receivePong, "EM-pong");
+
+    if (emWindow) {
+      emWindow.loadView(aView);
+      browserWindow.gBrowser.selectedTab =
+        browserWindow.gBrowser._getTabForContentWindow(emWindow);
+      emWindow.focus();
+      return;
+    }
+  }
+
+  var newLoad = !switchToTabHavingURI("about:addons", true);
+
+  if (aView) {
+    // This must be a new load, else the ping/pong would have
+    // found the window above.
+    Services.obs.addObserver(function observer(aSubject, aTopic, aData) {
+      Services.obs.removeObserver(observer, aTopic);
+      aSubject.loadView(aView);
+    }, "EM-loaded", false);
+  }
+}
+
+function BrowserOpenPermissionsMgr() {
+  switchToTabHavingURI("about:permissions", true);
+}
+
+function AddKeywordForSearchField() {
+  var node = document.popupNode;
+
+  var charset = node.ownerDocument.characterSet;
+
+  var docURI = makeURI(node.ownerDocument.URL,
+                       charset);
+
+  var formURI = makeURI(node.form.getAttribute("action"),
+                        charset,
+                        docURI);
+
+  var spec = formURI.spec;
+
+  var isURLEncoded =
+               (node.form.method.toUpperCase() == "POST"
+                && (node.form.enctype == "application/x-www-form-urlencoded" ||
+                    node.form.enctype == ""));
+
+  var title = gNavigatorBundle.getFormattedString("addKeywordTitleAutoFill",
+                                                  [node.ownerDocument.title]);
+  var description = PlacesUIUtils.getDescriptionFromDocument(node.ownerDocument);
+
+  var formData = [];
+
+  function escapeNameValuePair(aName, aValue, aIsFormUrlEncoded) {
+    if (aIsFormUrlEncoded)
+      return escape(aName + "=" + aValue);
+    else
+      return escape(aName) + "=" + escape(aValue);
+  }
+
+  for (let el of node.form.elements) {
+    if (!el.type) // happens with fieldsets
+      continue;
+
+    if (el == node) {
+      formData.push((isURLEncoded) ? escapeNameValuePair(el.name, "%s", true) :
+                                     // Don't escape "%s", just append
+                                     escapeNameValuePair(el.name, "", false) + "%s");
+      continue;
+    }
+
+    let type = el.type.toLowerCase();
+
+    if (((el instanceof HTMLInputElement && el.mozIsTextField(true)) ||
+        type == "hidden" || type == "textarea") ||
+        ((type == "checkbox" || type == "radio") && el.checked)) {
+      formData.push(escapeNameValuePair(el.name, el.value, isURLEncoded));
+    } else if (el instanceof HTMLSelectElement && el.selectedIndex >= 0) {
+      for (var j=0; j < el.options.length; j++) {
+        if (el.options[j].selected)
+          formData.push(escapeNameValuePair(el.name, el.options[j].value,
+                                            isURLEncoded));
+      }
+    }
+  }
+
+  var postData;
+
+  if (isURLEncoded)
+    postData = formData.join("&");
+  else
+    spec += "?" + formData.join("&");
+
+  PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                   , type: "bookmark"
+                                   , uri: makeURI(spec)
+                                   , title: title
+                                   , description: description
+                                   , keyword: ""
+                                   , postData: postData
+                                   , charSet: charset
+                                   , hiddenRows: [ "location"
+                                                 , "description"
+                                                 , "tags"
+                                                 , "loadInSidebar" ]
+                                   }, window);
+}
+
+function SwitchDocumentDirection(aWindow) {
+  // document.dir can also be "auto", in which case it won't change
+  if (aWindow.document.dir == "ltr" || aWindow.document.dir == "") {
+    aWindow.document.dir = "rtl";
+  } else if (aWindow.document.dir == "rtl") {
+    aWindow.document.dir = "ltr";
+  }
+  for (var run = 0; run < aWindow.frames.length; run++)
+    SwitchDocumentDirection(aWindow.frames[run]);
+}
+
+function convertFromUnicode(charset, str)
+{
+  try {
+    var unicodeConverter = Components
+       .classes["@mozilla.org/intl/scriptableunicodeconverter"]
+       .createInstance(Components.interfaces.nsIScriptableUnicodeConverter);
+    unicodeConverter.charset = charset;
+    str = unicodeConverter.ConvertFromUnicode(str);
+    return str + unicodeConverter.Finish();
+  } catch(ex) {
+    return null;
+  }
+}
+
+/**
+ * Re-open a closed tab.
+ * @param aIndex
+ *        The index of the tab (via nsSessionStore.getClosedTabData)
+ * @returns a reference to the reopened tab.
+ */
+function undoCloseTab(aIndex) {
+  // wallpaper patch to prevent an unnecessary blank tab (bug 343895)
+  var blankTabToRemove = null;
+  if (gBrowser.tabs.length == 1 &&
+      !gPrefService.getBoolPref("browser.tabs.autoHide") &&
+      isTabEmpty(gBrowser.selectedTab)) 
+    blankTabToRemove = gBrowser.selectedTab;
+
+  var tab = null;
+  var ss = Cc["@mozilla.org/browser/sessionstore;1"].
+           getService(Ci.nsISessionStore);
+  if (ss.getClosedTabCount(window) > (aIndex || 0)) {
+    tab = ss.undoCloseTab(window, aIndex || 0);
+
+    if (blankTabToRemove)
+      gBrowser.removeTab(blankTabToRemove);
+  }
+
+  return tab;
+}
+
+/**
+ * Re-open a closed window.
+ * @param aIndex
+ *        The index of the window (via nsSessionStore.getClosedWindowData)
+ * @returns a reference to the reopened window.
+ */
+function undoCloseWindow(aIndex) {
+  let ss = Cc["@mozilla.org/browser/sessionstore;1"].
+           getService(Ci.nsISessionStore);
+  let window = null;
+  if (ss.getClosedWindowCount() > (aIndex || 0))
+    window = ss.undoCloseWindow(aIndex || 0);
+
+  return window;
+}
+
+/*
+ * Determines if a tab is "empty", usually used in the context of determining
+ * if it's ok to close the tab.
+ */
+function isTabEmpty(aTab) {
+  if (aTab.hasAttribute("busy"))
+    return false;
+
+  let browser = aTab.linkedBrowser;
+  if (!isBlankPageURL(browser.currentURI.spec))
+    return false;
+
+  // Bug 863515 - Make content.opener checks work in electrolysis.
+  if (!gMultiProcessBrowser && browser.contentWindow.opener)
+    return false;
+
+  if (browser.sessionHistory && browser.sessionHistory.count >= 2)
+    return false;
+
+  return true;
+}
+
+#ifdef MOZ_SERVICES_SYNC
+function BrowserOpenSyncTabs() {
+  switchToTabHavingURI("about:sync-tabs", true);
+}
+#endif
+
+/**
+ * Format a URL
+ * eg:
+ * echo formatURL("https://addons.mozilla.org/%LOCALE%/%APP%/%VERSION%/");
+ * > https://addons.mozilla.org/en-US/firefox/3.0a1/
+ *
+ * Currently supported built-ins are LOCALE, APP, and any value from nsIXULAppInfo, uppercased.
+ */
+function formatURL(aFormat, aIsPref) {
+  var formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
+  return aIsPref ? formatter.formatURLPref(aFormat) : formatter.formatURL(aFormat);
+}
+
+/**
+ * Utility object to handle manipulations of the identity indicators in the UI
+ */
+var gIdentityHandler = {
+  // Mode strings used to control CSS display
+  IDENTITY_MODE_IDENTIFIED       : "verifiedIdentity", // High-quality identity information
+  IDENTITY_MODE_DOMAIN_VERIFIED  : "verifiedDomain",   // Minimal SSL CA-signed domain verification
+  IDENTITY_MODE_UNKNOWN          : "unknownIdentity",  // No trusted identity information
+  IDENTITY_MODE_MIXED_CONTENT    : "unknownIdentity mixedContent",  // SSL with unauthenticated content
+  IDENTITY_MODE_MIXED_ACTIVE_CONTENT    : "unknownIdentity mixedContent mixedActiveContent",  // SSL with unauthenticated content
+  IDENTITY_MODE_CHROMEUI         : "chromeUI",         // Part of the product's UI
+
+  // Cache the most recent SSLStatus and Location seen in checkIdentity
+  _lastStatus : null,
+  _lastLocation : null,
+  _mode : "unknownIdentity",
+
+  // smart getters
+  get _encryptionLabel () {
+    delete this._encryptionLabel;
+    this._encryptionLabel = {};
+    this._encryptionLabel[this.IDENTITY_MODE_DOMAIN_VERIFIED] =
+      gNavigatorBundle.getString("identity.encrypted");
+    this._encryptionLabel[this.IDENTITY_MODE_IDENTIFIED] =
+      gNavigatorBundle.getString("identity.encrypted");
+    this._encryptionLabel[this.IDENTITY_MODE_UNKNOWN] =
+      gNavigatorBundle.getString("identity.unencrypted");
+    this._encryptionLabel[this.IDENTITY_MODE_MIXED_CONTENT] =
+      gNavigatorBundle.getString("identity.mixed_content");
+    this._encryptionLabel[this.IDENTITY_MODE_MIXED_ACTIVE_CONTENT] =
+      gNavigatorBundle.getString("identity.mixed_content");
+    return this._encryptionLabel;
+  },
+  get _identityPopup () {
+    delete this._identityPopup;
+    return this._identityPopup = document.getElementById("identity-popup");
+  },
+  get _identityBox () {
+    delete this._identityBox;
+    return this._identityBox = document.getElementById("identity-box");
+  },
+  get _identityPopupContentBox () {
+    delete this._identityPopupContentBox;
+    return this._identityPopupContentBox =
+      document.getElementById("identity-popup-content-box");
+  },
+  get _identityPopupContentHost () {
+    delete this._identityPopupContentHost;
+    return this._identityPopupContentHost =
+      document.getElementById("identity-popup-content-host");
+  },
+  get _identityPopupContentOwner () {
+    delete this._identityPopupContentOwner;
+    return this._identityPopupContentOwner =
+      document.getElementById("identity-popup-content-owner");
+  },
+  get _identityPopupContentSupp () {
+    delete this._identityPopupContentSupp;
+    return this._identityPopupContentSupp =
+      document.getElementById("identity-popup-content-supplemental");
+  },
+  get _identityPopupContentVerif () {
+    delete this._identityPopupContentVerif;
+    return this._identityPopupContentVerif =
+      document.getElementById("identity-popup-content-verifier");
+  },
+  get _identityPopupEncLabel () {
+    delete this._identityPopupEncLabel;
+    return this._identityPopupEncLabel =
+      document.getElementById("identity-popup-encryption-label");
+  },
+  get _identityIconLabel () {
+    delete this._identityIconLabel;
+    return this._identityIconLabel = document.getElementById("identity-icon-label");
+  },
+  get _overrideService () {
+    delete this._overrideService;
+    return this._overrideService = Cc["@mozilla.org/security/certoverride;1"]
+                                     .getService(Ci.nsICertOverrideService);
+  },
+  get _identityIconCountryLabel () {
+    delete this._identityIconCountryLabel;
+    return this._identityIconCountryLabel = document.getElementById("identity-icon-country-label");
+  },
+  get _identityIcon () {
+    delete this._identityIcon;
+    return this._identityIcon = document.getElementById("page-proxy-favicon");
+  },
+
+  /**
+   * Rebuild cache of the elements that may or may not exist depending
+   * on whether there's a location bar.
+   */
+  _cacheElements : function() {
+    delete this._identityBox;
+    delete this._identityIconLabel;
+    delete this._identityIconCountryLabel;
+    delete this._identityIcon;
+    this._identityBox = document.getElementById("identity-box");
+    this._identityIconLabel = document.getElementById("identity-icon-label");
+    this._identityIconCountryLabel = document.getElementById("identity-icon-country-label");
+    this._identityIcon = document.getElementById("page-proxy-favicon");
+  },
+
+  /**
+   * Handler for mouseclicks on the "More Information" button in the
+   * "identity-popup" panel.
+   */
+  handleMoreInfoClick : function(event) {
+    displaySecurityInfo();
+    event.stopPropagation();
+  },
+
+  /**
+   * Helper to parse out the important parts of _lastStatus (of the SSL cert in
+   * particular) for use in constructing identity UI strings
+  */
+  getIdentityData : function() {
+    var result = {};
+    var status = this._lastStatus.QueryInterface(Components.interfaces.nsISSLStatus);
+    var cert = status.serverCert;
+
+    // Human readable name of Subject
+    result.subjectOrg = cert.organization;
+
+    // SubjectName fields, broken up for individual access
+    if (cert.subjectName) {
+      result.subjectNameFields = {};
+      cert.subjectName.split(",").forEach(function(v) {
+        var field = v.split("=");
+        this[field[0]] = field[1];
+      }, result.subjectNameFields);
+
+      // Call out city, state, and country specifically
+      result.city = result.subjectNameFields.L;
+      result.state = result.subjectNameFields.ST;
+      result.country = result.subjectNameFields.C;
+    }
+
+    // Human readable name of Certificate Authority
+    result.caOrg =  cert.issuerOrganization || cert.issuerCommonName;
+    result.cert = cert;
+
+    return result;
+  },
+
+  /**
+   * Determine the identity of the page being displayed by examining its SSL cert
+   * (if available) and, if necessary, update the UI to reflect this.  Intended to
+   * be called by onSecurityChange
+   *
+   * @param PRUint32 state
+   * @param JS Object location that mirrors an nsLocation (i.e. has .host and
+   *                           .hostname and .port)
+   */
+  checkIdentity : function(state, location) {
+    var currentStatus = gBrowser.securityUI
+                                .QueryInterface(Components.interfaces.nsISSLStatusProvider)
+                                .SSLStatus;
+    this._lastStatus = currentStatus;
+    this._lastLocation = location;
+
+    let nsIWebProgressListener = Ci.nsIWebProgressListener;
+    if (location.protocol == "chrome:" || location.protocol == "about:") {
+      this.setMode(this.IDENTITY_MODE_CHROMEUI);
+    } else if (state & nsIWebProgressListener.STATE_IDENTITY_EV_TOPLEVEL) {
+      this.setMode(this.IDENTITY_MODE_IDENTIFIED);
+    } else if (state & nsIWebProgressListener.STATE_IS_SECURE) {
+      this.setMode(this.IDENTITY_MODE_DOMAIN_VERIFIED);
+    } else if (state & nsIWebProgressListener.STATE_IS_BROKEN) {
+      if ((state & nsIWebProgressListener.STATE_LOADED_MIXED_ACTIVE_CONTENT) &&
+          gPrefService.getBoolPref("security.mixed_content.block_active_content")) {
+        this.setMode(this.IDENTITY_MODE_MIXED_ACTIVE_CONTENT);
+      } else {
+        this.setMode(this.IDENTITY_MODE_MIXED_CONTENT);
+      }
+    } else {
+      this.setMode(this.IDENTITY_MODE_UNKNOWN);
+    }
+
+    // Ensure the doorhanger is shown when mixed active content is blocked.
+    if (state & nsIWebProgressListener.STATE_BLOCKED_MIXED_ACTIVE_CONTENT)
+      this.showMixedContentDoorhanger();
+  },
+
+  /**
+   * Display the Mixed Content Blocker doohanger, providing an option
+   * to the user to override mixed content blocking
+   */
+  showMixedContentDoorhanger : function() {
+    // If we've already got an active notification, bail out to avoid showing it repeatedly.
+    if (PopupNotifications.getNotification("mixed-content-blocked", gBrowser.selectedBrowser))
+      return;
+
+    let brandBundle = document.getElementById("bundle_brand");
+    let brandShortName = brandBundle.getString("brandShortName");
+    let messageString = gNavigatorBundle.getFormattedString("mixedContentBlocked.message", [brandShortName]);
+    let action = {
+      label: gNavigatorBundle.getString("mixedContentBlocked.keepBlockingButton.label"),
+      accessKey: gNavigatorBundle.getString("mixedContentBlocked.keepBlockingButton.accesskey"),
+      callback: function() { /* NOP */ }
+    };
+    let secondaryActions = [
+      {
+        label: gNavigatorBundle.getString("mixedContentBlocked.unblock.label"),
+        accessKey: gNavigatorBundle.getString("mixedContentBlocked.unblock.accesskey"),
+        callback: function() {
+          // Reload the page with the content unblocked
+          BrowserReloadWithFlags(nsIWebNavigation.LOAD_FLAGS_ALLOW_MIXED_CONTENT);
+        }
+      }
+    ];
+    let options = {
+      dismissed: true,
+      learnMoreURL: Services.urlFormatter.formatURLPref("browser.mixedcontent.warning.infoURL"),
+    };
+    PopupNotifications.show(gBrowser.selectedBrowser, "mixed-content-blocked",
+                            messageString, "mixed-content-blocked-notification-icon",
+                            action, secondaryActions, options);
+  },
+
+  /**
+   * Return the eTLD+1 version of the current hostname
+   */
+  getEffectiveHost : function() {
+    try {
+      let baseDomain =
+        Services.eTLD.getBaseDomainFromHost(this._lastLocation.hostname);
+      return this._IDNService.convertToDisplayIDN(baseDomain, {});
+    } catch (e) {
+      // If something goes wrong (e.g. hostname is an IP address) just fail back
+      // to the full domain.
+      return this._lastLocation.hostname;
+    }
+  },
+
+  /**
+   * Update the UI to reflect the specified mode, which should be one of the
+   * IDENTITY_MODE_* constants.
+   */
+  setMode : function(newMode) {
+    if (!this._identityBox) {
+      // No identity box means the identity box is not visible, in which
+      // case there's nothing to do.
+      return;
+    }
+
+    this._identityBox.className = newMode;
+    this.setIdentityMessages(newMode);
+
+    // Update the popup too, if it's open
+    if (this._identityPopup.state == "open")
+      this.setPopupMessages(newMode);
+
+    this._mode = newMode;
+  },
+
+  /**
+   * Set up the messages for the primary identity UI based on the specified mode,
+   * and the details of the SSL cert, where applicable
+   *
+   * @param newMode The newly set identity mode.  Should be one of the IDENTITY_MODE_* constants.
+   */
+  setIdentityMessages : function(newMode) {
+    let icon_label = "";
+    let tooltip = "";
+    let icon_country_label = "";
+    let icon_labels_dir = "ltr";
+
+    if (!this._IDNService)
+      this._IDNService = Cc["@mozilla.org/network/idn-service;1"]
+                         .getService(Ci.nsIIDNService);
+    let punyID = gPrefService.getIntPref("browser.identity.display_punycode", 1);
+
+    switch (newMode) {
+    case this.IDENTITY_MODE_DOMAIN_VERIFIED: {
+      let iData = this.getIdentityData();
+      
+      let label_display = "";
+
+      //Pale Moon: honor browser.identity.ssl_domain_display!
+      switch (gPrefService.getIntPref("browser.identity.ssl_domain_display")) {
+        case 2 : // Show full domain
+          label_display = this._lastLocation.hostname;
+          break;
+        case 1 : // Show eTLD.
+          label_display = this.getEffectiveHost();
+      }
+
+      if (punyID >= 1) {
+        // Display punycode version in identity panel
+        icon_label = this._IDNService.convertUTF8toACE(label_display);
+      } else {
+        icon_label = label_display;
+      }
+
+      // Verifier is either the CA Org, for a normal cert, or a special string
+      // for certs that are trusted because of a security exception.
+      tooltip = gNavigatorBundle.getFormattedString("identity.identified.verifier",
+                                                    [iData.caOrg]);
+
+      // Check whether this site is a security exception. XPConnect does the right
+      // thing here in terms of converting _lastLocation.port from string to int, but
+      // the overrideService doesn't like undefined ports, so make sure we have
+      // something in the default case (bug 432241).
+      // .hostname can return an empty string in some exceptional cases -
+      // hasMatchingOverride does not handle that, so avoid calling it.
+      // Updating the tooltip value in those cases isn't critical.
+      // FIXME: Fixing bug 646690 would probably makes this check unnecessary
+      if (this._lastLocation.hostname &&
+          this._overrideService.hasMatchingOverride(this._lastLocation.hostname,
+                                                    (this._lastLocation.port || 443),
+                                                    iData.cert, {}, {}))
+        tooltip = gNavigatorBundle.getString("identity.identified.verified_by_you");
+      break; }
+    case this.IDENTITY_MODE_IDENTIFIED: {
+      // If it's identified, then we can populate the dialog with credentials
+      let iData = this.getIdentityData();
+      tooltip = gNavigatorBundle.getFormattedString("identity.identified.verifier",
+                                                    [iData.caOrg]);
+      icon_label = iData.subjectOrg;
+      if (iData.country)
+        icon_country_label = "(" + iData.country + ")";
+
+      // If the organization name starts with an RTL character, then
+      // swap the positions of the organization and country code labels.
+      // The Unicode ranges reflect the definition of the UCS2_CHAR_IS_BIDI
+      // macro in intl/unicharutil/util/nsBidiUtils.h. When bug 218823 gets
+      // fixed, this test should be replaced by one adhering to the
+      // Unicode Bidirectional Algorithm proper (at the paragraph level).
+      icon_labels_dir = /^[\u0590-\u08ff\ufb1d-\ufdff\ufe70-\ufefc]/.test(icon_label) ?
+                        "rtl" : "ltr";
+      break; }
+    case this.IDENTITY_MODE_CHROMEUI:
+      break;
+    default:
+      tooltip = gNavigatorBundle.getString("identity.unknown.tooltip");
+      if (punyID == 2) {
+        // Check for IDN and display if so...
+        let rawHost = this._IDNService.convertUTF8toACE(this._lastLocation.hostname);
+        if (this._IDNService.isACE(rawHost)) {
+          icon_label = rawHost;
+        }
+      }
+    }
+
+    // Push the appropriate strings out to the UI
+    this._identityBox.tooltipText = tooltip;
+    this._identityIconLabel.value = icon_label;
+    this._identityIconCountryLabel.value = icon_country_label;
+    // Set cropping and direction
+    this._identityIconLabel.crop = icon_country_label ? "end" : "center";
+    this._identityIconLabel.parentNode.style.direction = icon_labels_dir;
+    // Hide completely if the organization label is empty
+    this._identityIconLabel.parentNode.collapsed = icon_label ? false : true;
+  },
+
+  /**
+   * Set up the title and content messages for the identity message popup,
+   * based on the specified mode, and the details of the SSL cert, where
+   * applicable
+   *
+   * @param newMode The newly set identity mode.  Should be one of the IDENTITY_MODE_* constants.
+   */
+  setPopupMessages : function(newMode) {
+
+    this._identityPopup.className = newMode;
+    this._identityPopupContentBox.className = newMode;
+
+    // Set the static strings up front
+    this._identityPopupEncLabel.textContent = this._encryptionLabel[newMode];
+
+    // Initialize the optional strings to empty values
+    let supplemental = "";
+    let verifier = "";
+    let host = "";
+    let owner = "";
+
+    switch (newMode) {
+    case this.IDENTITY_MODE_DOMAIN_VERIFIED:
+      host = this.getEffectiveHost();
+      owner = gNavigatorBundle.getString("identity.ownerUnknown2");
+      verifier = this._identityBox.tooltipText;
+      break;
+    case this.IDENTITY_MODE_IDENTIFIED: {
+      // If it's identified, then we can populate the dialog with credentials
+      let iData = this.getIdentityData();
+      host = this.getEffectiveHost();
+      owner = iData.subjectOrg;
+      verifier = this._identityBox.tooltipText;
+
+      // Build an appropriate supplemental block out of whatever location data we have
+      if (iData.city)
+        supplemental += iData.city + "\n";
+      if (iData.state && iData.country)
+        supplemental += gNavigatorBundle.getFormattedString("identity.identified.state_and_country",
+                                                            [iData.state, iData.country]);
+      else if (iData.state) // State only
+        supplemental += iData.state;
+      else if (iData.country) // Country only
+        supplemental += iData.country;
+      break; }
+    }
+
+    // Push the appropriate strings out to the UI
+    this._identityPopupContentHost.textContent = host;
+    this._identityPopupContentOwner.textContent = owner;
+    this._identityPopupContentSupp.textContent = supplemental;
+    this._identityPopupContentVerif.textContent = verifier;
+  },
+
+  hideIdentityPopup : function() {
+    this._identityPopup.hidePopup();
+  },
+
+  /**
+   * Click handler for the identity-box element in primary chrome.
+   */
+  handleIdentityButtonEvent : function(event) {
+    event.stopPropagation();
+
+    if ((event.type == "click" && event.button != 0) ||
+        (event.type == "keypress" && event.charCode != KeyEvent.DOM_VK_SPACE &&
+         event.keyCode != KeyEvent.DOM_VK_RETURN)) {
+      return; // Left click, space or enter only
+    }
+
+    // Don't allow left click, space or enter if the location
+    // is chrome UI or the location has been modified.
+    if (this._mode == this.IDENTITY_MODE_CHROMEUI ||
+        gURLBar.getAttribute("pageproxystate") != "valid") {
+      return;
+    }
+
+    // Make sure that the display:none style we set in xul is removed now that
+    // the popup is actually needed
+    this._identityPopup.hidden = false;
+
+    // Update the popup strings
+    this.setPopupMessages(this._identityBox.className);
+
+    // Add the "open" attribute to the identity box for styling
+    this._identityBox.setAttribute("open", "true");
+    var self = this;
+    this._identityPopup.addEventListener("popuphidden", function onPopupHidden(e) {
+      e.currentTarget.removeEventListener("popuphidden", onPopupHidden, false);
+      self._identityBox.removeAttribute("open");
+    }, false);
+
+    // Now open the popup, anchored off the primary chrome element
+    this._identityPopup.openPopup(this._identityIcon, "bottomcenter topleft");
+  },
+
+  onPopupShown : function(event) {
+    document.getElementById('identity-popup-more-info-button').focus();
+  },
+
+  onDragStart: function (event) {
+    if (gURLBar.getAttribute("pageproxystate") != "valid")
+      return;
+
+    var value = content.location.href;
+    var urlString = value + "\n" + content.document.title;
+    var htmlString = "<a href=\"" + value + "\">" + value + "</a>";
+
+    var dt = event.dataTransfer;
+    dt.setData("text/x-moz-url", urlString);
+    dt.setData("text/uri-list", value);
+    dt.setData("text/plain", value);
+    dt.setData("text/html", htmlString);
+    dt.setDragImage(gProxyFavIcon, 16, 16);
+  }
+};
+
+function getNotificationBox(aWindow) {
+  var foundBrowser = gBrowser.getBrowserForDocument(aWindow.document);
+  if (foundBrowser)
+    return gBrowser.getNotificationBox(foundBrowser)
+  return null;
+};
+
+function getTabModalPromptBox(aWindow) {
+  var foundBrowser = gBrowser.getBrowserForDocument(aWindow.document);
+  if (foundBrowser)
+    return gBrowser.getTabModalPromptBox(foundBrowser);
+  return null;
+};
+
+/* DEPRECATED */
+function getBrowser() gBrowser;
+function getNavToolbox() gNavToolbox;
+
+var gPrivateBrowsingUI = {
+  init: function PBUI_init() {
+    // Do nothing for normal windows
+    if (!PrivateBrowsingUtils.isWindowPrivate(window)) {
+      return;
+    }
+
+    // Disable the Clear Recent History... menu item when in PB mode
+    // temporary fix until bug 463607 is fixed
+    document.getElementById("Tools:Sanitize").setAttribute("disabled", "true");
+
+    if (window.location.href == getBrowserURL()) {
+#ifdef XP_MACOSX
+      if (!PrivateBrowsingUtils.permanentPrivateBrowsing) {
+        document.documentElement.setAttribute("drawintitlebar", true);
+      }
+#endif
+
+      // Adjust the window's title
+      let docElement = document.documentElement;
+      if (!PrivateBrowsingUtils.permanentPrivateBrowsing) {
+        docElement.setAttribute("title",
+          docElement.getAttribute("title_privatebrowsing"));
+        docElement.setAttribute("titlemodifier",
+          docElement.getAttribute("titlemodifier_privatebrowsing"));
+      }
+      docElement.setAttribute("privatebrowsingmode",
+        PrivateBrowsingUtils.permanentPrivateBrowsing ? "permanent" : "temporary");
+      gBrowser.updateTitlebar();
+
+      if (PrivateBrowsingUtils.permanentPrivateBrowsing) {
+        // Adjust the New Window menu entries
+        [
+          { normal: "menu_newNavigator", private: "menu_newPrivateWindow" },
+          { normal: "appmenu_newNavigator", private: "appmenu_newPrivateWindow" },
+        ].forEach(function(menu) {
+          let newWindow = document.getElementById(menu.normal);
+          let newPrivateWindow = document.getElementById(menu.private);
+          if (newWindow && newPrivateWindow) {
+            newPrivateWindow.hidden = true;
+            newWindow.label = newPrivateWindow.label;
+            newWindow.accessKey = newPrivateWindow.accessKey;
+            newWindow.command = newPrivateWindow.command;
+          }
+        });
+      }
+    }
+
+    if (gURLBar &&
+        !PrivateBrowsingUtils.permanentPrivateBrowsing) {
+      // Disable switch to tab autocompletion for private windows 
+      // (not for "Always use private browsing" mode)
+      gURLBar.setAttribute("autocompletesearchparam", "");
+    }
+  }
+};
+
+
+/**
+ * Switch to a tab that has a given URI, and focusses its browser window.
+ * If a matching tab is in this window, it will be switched to. Otherwise, other
+ * windows will be searched.
+ *
+ * @param aURI
+ *        URI to search for
+ * @param aOpenNew
+ *        True to open a new tab and switch to it, if no existing tab is found.
+ *        If no suitable window is found, a new one will be opened.
+ * @return True if an existing tab was found, false otherwise
+ */
+function switchToTabHavingURI(aURI, aOpenNew) {
+  // This will switch to the tab in aWindow having aURI, if present.
+  function switchIfURIInWindow(aWindow) {
+    // Only switch to the tab if neither the source and desination window are
+    // private and they are not in permanent private borwsing mode
+    if ((PrivateBrowsingUtils.isWindowPrivate(window) ||
+        PrivateBrowsingUtils.isWindowPrivate(aWindow)) &&
+        !PrivateBrowsingUtils.permanentPrivateBrowsing) {
+      return false;
+    }
+
+    let browsers = aWindow.gBrowser.browsers;
+    for (let i = 0; i < browsers.length; i++) {
+      let browser = browsers[i];
+      if (browser.currentURI.equals(aURI)) {
+        // Focus the matching window & tab
+        aWindow.focus();
+        aWindow.gBrowser.tabContainer.selectedIndex = i;
+        return true;
+      }
+    }
+    return false;
+  }
+
+  // This can be passed either nsIURI or a string.
+  if (!(aURI instanceof Ci.nsIURI))
+    aURI = Services.io.newURI(aURI, null, null);
+
+  let isBrowserWindow = !!window.gBrowser;
+
+  // Prioritise this window.
+  if (isBrowserWindow && switchIfURIInWindow(window))
+    return true;
+
+  let winEnum = Services.wm.getEnumerator("navigator:browser");
+  while (winEnum.hasMoreElements()) {
+    let browserWin = winEnum.getNext();
+    // Skip closed (but not yet destroyed) windows,
+    // and the current window (which was checked earlier).
+    if (browserWin.closed || browserWin == window)
+      continue;
+    if (switchIfURIInWindow(browserWin))
+      return true;
+  }
+
+  // No opened tab has that url.
+  if (aOpenNew) {
+    if (isBrowserWindow && isTabEmpty(gBrowser.selectedTab))
+      gBrowser.selectedBrowser.loadURI(aURI.spec);
+    else
+      openUILinkIn(aURI.spec, "tab");
+  }
+
+  return false;
+}
+
+function restoreLastSession() {
+  let ss = Cc["@mozilla.org/browser/sessionstore;1"].
+           getService(Ci.nsISessionStore);
+  ss.restoreLastSession();
+}
+
+var TabContextMenu = {
+  contextTab: null,
+  _updateToggleMuteMenuItem(aTab, aConditionFn) {
+    ["muted", "soundplaying"].forEach(attr => {
+      if (!aConditionFn || aConditionFn(attr)) {
+        if (aTab.hasAttribute(attr)) {
+          aTab.toggleMuteMenuItem.setAttribute(attr, "true");
+        } else {
+          aTab.toggleMuteMenuItem.removeAttribute(attr);
+        }
+      }
+    });
+  },
+  updateContextMenu: function updateContextMenu(aPopupMenu) {
+    this.contextTab = aPopupMenu.triggerNode.localName == "tab" ?
+                      aPopupMenu.triggerNode : gBrowser.selectedTab;
+    let disabled = gBrowser.tabs.length == 1;
+
+    // Enable the "Close Tab" menuitem when the window doesn't close with the last tab.
+    document.getElementById("context_closeTab").disabled =
+      disabled && gBrowser.tabContainer._closeWindowWithLastTab;
+
+    var menuItems = aPopupMenu.getElementsByAttribute("tbattr", "tabbrowser-multiple");
+    for (let menuItem of menuItems)
+      menuItem.disabled = disabled;
+
+    disabled = gBrowser.visibleTabs.length == 1;
+    menuItems = aPopupMenu.getElementsByAttribute("tbattr", "tabbrowser-multiple-visible");
+    for (let menuItem of menuItems)
+      menuItem.disabled = disabled;
+
+    // Session store
+    document.getElementById("context_undoCloseTab").disabled =
+      Cc["@mozilla.org/browser/sessionstore;1"].
+      getService(Ci.nsISessionStore).
+      getClosedTabCount(window) == 0;
+
+    // Only one of pin/unpin should be visible
+    document.getElementById("context_pinTab").hidden = this.contextTab.pinned;
+    document.getElementById("context_unpinTab").hidden = !this.contextTab.pinned;
+
+    // Disable "Close Tabs to the Right" if there are no tabs
+    // following it and hide it when the user rightclicked on a pinned
+    // tab.
+    document.getElementById("context_closeTabsToTheEnd").disabled =
+      gBrowser.getTabsToTheEndFrom(this.contextTab).length == 0;
+    document.getElementById("context_closeTabsToTheEnd").hidden = this.contextTab.pinned;
+
+    // Disable "Close other Tabs" if there is only one unpinned tab and
+    // hide it when the user rightclicked on a pinned tab.
+    let unpinnedTabs = gBrowser.visibleTabs.length - gBrowser._numPinnedTabs;
+    document.getElementById("context_closeOtherTabs").disabled = unpinnedTabs <= 1;
+    document.getElementById("context_closeOtherTabs").hidden = this.contextTab.pinned;
+
+    // Hide "Bookmark All Tabs" for a pinned tab.  Update its state if visible.
+    let bookmarkAllTabs = document.getElementById("context_bookmarkAllTabs");
+    bookmarkAllTabs.hidden = this.contextTab.pinned;
+    if (!bookmarkAllTabs.hidden)
+      PlacesCommandHook.updateBookmarkAllTabsCommand();
+
+    // Adjust the state of the toggle mute menu item.
+    let toggleMute = document.getElementById("context_toggleMuteTab");
+    if (this.contextTab.hasAttribute("muted")) {
+      toggleMute.label = gNavigatorBundle.getString("unmuteTab.label");
+      toggleMute.accessKey = gNavigatorBundle.getString("unmuteTab.accesskey");
+    } else {
+      toggleMute.label = gNavigatorBundle.getString("muteTab.label");
+      toggleMute.accessKey = gNavigatorBundle.getString("muteTab.accesskey");
+    }
+    
+    this.contextTab.toggleMuteMenuItem = toggleMute;
+    this._updateToggleMuteMenuItem(this.contextTab);
+
+    this.contextTab.addEventListener("TabAttrModified", this, false);
+    aPopupMenu.addEventListener("popuphiding", this, false);
+  },
+  handleEvent(aEvent) {
+    switch (aEvent.type) {
+      case "popuphiding":
+        gBrowser.removeEventListener("TabAttrModified", this);
+        aEvent.target.removeEventListener("popuphiding", this);
+        break;
+      case "TabAttrModified":
+        let tab = aEvent.target;
+        this._updateToggleMuteMenuItem(tab,
+          attr => aEvent.detail.changed.indexOf(attr) >= 0);
+        break;
+    }
+  }
+};
+
+#ifdef MOZ_DEVTOOLS
+// Note: Do not delete! It is used for: base/content/nsContextMenu.js
+XPCOMUtils.defineLazyModuleGetter(this, "gDevTools",
+                                  "resource://devtools/client/framework/gDevTools.jsm");
+#endif
+
+// Prompt user to restart the browser in safe mode or normally
+function restart(safeMode)
+{
+  let promptTitleString = null;
+  let promptMessageString = null;
+  let restartTextString = null;
+  if (safeMode) {
+    promptTitleString = "safeModeRestartPromptTitle";
+    promptMessageString = "safeModeRestartPromptMessage";
+    restartTextString = "safeModeRestartButton";
+  } else {
+    promptTitleString = "restartPromptTitle";
+    promptMessageString = "restartPromptMessage";
+    restartTextString = "restartButton";
+  }
+
+  let flags = Ci.nsIAppStartup.eAttemptQuit;
+
+  // Prompt the user to confirm
+  let promptTitle = gNavigatorBundle.getString(promptTitleString);
+  let brandBundle = document.getElementById("bundle_brand");
+  let brandShortName = brandBundle.getString("brandShortName");
+  let promptMessage =
+    gNavigatorBundle.getFormattedString(promptMessageString, [brandShortName]);
+  let restartText = gNavigatorBundle.getString(restartTextString);
+  let buttonFlags = (Services.prompt.BUTTON_POS_0 *
+                     Services.prompt.BUTTON_TITLE_IS_STRING) +
+                    (Services.prompt.BUTTON_POS_1 *
+                     Services.prompt.BUTTON_TITLE_CANCEL) +
+                    Services.prompt.BUTTON_POS_0_DEFAULT;
+
+  let rv = Services.prompt.confirmEx(window, promptTitle, promptMessage,
+                                     buttonFlags, restartText, null, null,
+                                     null, {});
+
+  if (rv == 0) {
+    // Notify all windows that an application quit has been requested.
+    let cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"]
+                     .createInstance(Ci.nsISupportsPRBool);
+    Services.obs.notifyObservers(cancelQuit, "quit-application-requested", "restart");
+
+    // Something aborted the quit process.
+    if (cancelQuit.data) {
+      return;
+    }
+
+    if (safeMode) {    
+      Services.startup.restartInSafeMode(flags);
+    } else {
+      Services.startup.quit(flags | Ci.nsIAppStartup.eRestart);
+    }
+  }
+}
+
+/* duplicateTabIn duplicates tab in a place specified by the parameter |where|.
+ *
+ * |where| can be:
+ *  "tab"         new tab
+ *  "tabshifted"  same as "tab" but in background if default is to select new
+ *                tabs, and vice versa
+ *  "window"      new window
+ *
+ * delta is the offset to the history entry that you want to load.
+ */
+function duplicateTabIn(aTab, where, delta) {
+  let newTab = Cc['@mozilla.org/browser/sessionstore;1']
+                 .getService(Ci.nsISessionStore)
+                 .duplicateTab(window, aTab, delta);
+
+  switch (where) {
+    case "window":
+      gBrowser.hideTab(newTab);
+      gBrowser.replaceTabWithWindow(newTab);
+      break;
+    case "tabshifted":
+      // A background tab has been opened, nothing else to do here.
+      break;
+    case "tab":
+      gBrowser.selectedTab = newTab;
+      break;
+  }
+}
+
+function toggleAddonBar() {
+  let addonBar = document.getElementById("addon-bar");
+  setToolbarVisibility(addonBar, addonBar.collapsed);
+}
+
+XPCOMUtils.defineLazyGetter(window, "gShowPageResizers", function () {
+#ifdef XP_WIN
+  // Only show resizers on Windows 2000 and XP
+  return parseFloat(Services.sysinfo.getProperty("version")) < 6;
+#else
+  return false;
+#endif
+});
+
+var MousePosTracker = {
+  _listeners: [],
+  _x: 0,
+  _y: 0,
+  get _windowUtils() {
+    delete this._windowUtils;
+    return this._windowUtils = window.getInterface(Ci.nsIDOMWindowUtils);
+  },
+
+  addListener: function (listener) {
+    if (this._listeners.indexOf(listener) >= 0)
+      return;
+
+    listener._hover = false;
+    this._listeners.push(listener);
+
+    this._callListener(listener);
+  },
+
+  removeListener: function (listener) {
+    var index = this._listeners.indexOf(listener);
+    if (index < 0)
+      return;
+
+    this._listeners.splice(index, 1);
+  },
+
+  handleEvent: function (event) {
+    var fullZoom = this._windowUtils.fullZoom;
+    this._x = event.screenX / fullZoom - window.mozInnerScreenX;
+    this._y = event.screenY / fullZoom - window.mozInnerScreenY;
+
+    this._listeners.forEach(function (listener) {
+      try {
+        this._callListener(listener);
+      } catch (e) {
+        Cu.reportError(e);
+      }
+    }, this);
+  },
+
+  _callListener: function (listener) {
+    let rect = listener.getMouseTargetRect();
+    let hover = this._x >= rect.left &&
+                this._x <= rect.right &&
+                this._y >= rect.top &&
+                this._y <= rect.bottom;
+
+    if (hover == listener._hover)
+      return;
+
+    listener._hover = hover;
+
+    if (hover) {
+      if (listener.onMouseEnter)
+        listener.onMouseEnter();
+    } else {
+      if (listener.onMouseLeave)
+        listener.onMouseLeave();
+    }
+  }
+};
+
+var BrowserChromeTest = {
+  _cb: null,
+  _ready: false,
+  markAsReady: function () {
+    this._ready = true;
+    if (this._cb) {
+      this._cb();
+      this._cb = null;
+    }
+  },
+  runWhenReady: function (cb) {
+    if (this._ready)
+      cb();
+    else
+      this._cb = cb;
+  }
+};
+
+var ToolbarIconColor = {
+  init: function () {
+    this._initialized = true;
+
+    window.addEventListener("activate", this);
+    window.addEventListener("deactivate", this);
+    Services.obs.addObserver(this, "lightweight-theme-styling-update", false);
+    gPrefService.addObserver("ui.colorChanged", this, false);
+
+    // If the window isn't active now, we assume that it has never been active
+    // before and will soon become active such that inferFromText will be
+    // called from the initial activate event.
+    if (Services.focus.activeWindow == window)
+      this.inferFromText();
+  },
+
+  uninit: function () {
+    this._initialized = false;
+
+    window.removeEventListener("activate", this);
+    window.removeEventListener("deactivate", this);
+    Services.obs.removeObserver(this, "lightweight-theme-styling-update");
+    gPrefService.removeObserver("ui.colorChanged", this);
+  },
+
+  handleEvent: function (event) {
+    switch (event.type) {
+      case "activate":
+      case "deactivate":
+        this.inferFromText();
+        break;
+    }
+  },
+
+  observe: function (aSubject, aTopic, aData) {
+    switch (aTopic) {
+      case "lightweight-theme-styling-update":
+        // inferFromText needs to run after LightweightThemeConsumer.jsm's
+        // lightweight-theme-styling-update observer.
+        setTimeout(() => { this.inferFromText(); }, 0);
+        break;
+      case "nsPref:changed":
+        // system color change
+        var colorChangedPref = false;
+        try {
+          colorChangedPref = gPrefService.getBoolPref("ui.colorChanged");
+        } catch(e) { }
+        // if pref indicates change, call inferFromText() on a small delay
+        if (colorChangedPref == true)
+          setTimeout(() => { this.inferFromText(); }, 300);
+        break;
+      default:
+        console.error("ToolbarIconColor: Uncaught topic " + aTopic);
+    }
+  },
+
+  inferFromText: function () {
+    if (!this._initialized)
+      return;
+
+    function parseRGB(aColorString) {
+      let rgb = aColorString.match(/^rgba?\((\d+), (\d+), (\d+)/);
+      rgb.shift();
+      return rgb.map(x => parseInt(x));
+    }
+
+    let toolbarSelector = "toolbar:not([collapsed=true])";
+#ifdef XP_MACOSX
+    toolbarSelector += ":not([type=menubar])";
+#endif
+
+    // The getComputedStyle calls and setting the brighttext are separated in
+    // two loops to avoid flushing layout and making it dirty repeatedly.
+
+    let luminances = new Map;
+    for (let toolbar of document.querySelectorAll(toolbarSelector)) {
+      let [r, g, b] = parseRGB(getComputedStyle(toolbar).color);
+      let luminance = (2 * r + 5 * g + b) / 8;
+	  luminances.set(toolbar, luminance);
+    }
+
+    for (let [toolbar, luminance] of luminances) {
+      if (luminance <= 128)
+        toolbar.removeAttribute("brighttext");
+      else
+        toolbar.setAttribute("brighttext", "true");
+    }
+
+    // Clear pref if set, since we're done applying the color changes.
+    gPrefService.clearUserPref("ui.colorChanged");
+  }
+}
diff --git a/webbrowser/base/content/browser.xul b/webbrowser/base/content/browser.xul
new file mode 100644
index 0000000..0a249af
--- /dev/null
+++ b/webbrowser/base/content/browser.xul
@@ -0,0 +1,1046 @@
+#filter substitution
+<?xml version="1.0"?>
+# -*- Mode: HTML -*-
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xml-stylesheet href="chrome://browser/content/browser.css" type="text/css"?>
+
+# Restore title to AppMenu windowed use
+<?xml-stylesheet href="chrome://browser/content/browser-title.css" type="text/css"?>
+
+<?xml-stylesheet href="chrome://browser/content/places/places.css" type="text/css"?>
+#ifdef MOZ_DEVTOOLS
+<?xml-stylesheet href="chrome://devtools/skin/devtools-browser.css" type="text/css"?>
+#endif
+<?xml-stylesheet href="chrome://browser/skin/" type="text/css"?>
+
+<?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/places/placesOverlay.xul"?>
+
+# Padlock feature
+<?xul-overlay href="chrome://browser/content/padlock.xul"?>
+# Improve bookmark menu dragging
+<?xul-overlay href="chrome://browser/content/browser-menudragging.xul"?>
+# Automatic browser recovery
+<?xul-overlay href="chrome://browser/content/autorecovery.xul"?>
+
+ 
+# All DTD information is stored in a separate file so that it can be shared by
+# hiddenWindow.xul.
+#include browser-doctype.inc
+
+<window id="main-window"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns:svg="http://www.w3.org/2000/svg"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="gBrowserInit.onLoad()" onunload="gBrowserInit.onUnload()" onclose="return WindowIsClosing();"
+        title="&mainWindow.title;"
+        title_normal="&mainWindow.title;"
+#ifdef XP_MACOSX
+        title_privatebrowsing="&mainWindow.title;&mainWindow.titlemodifiermenuseparator;&mainWindow.titlePrivateBrowsingSuffix;"
+        titledefault="&mainWindow.title;"
+        titlemodifier=""
+        titlemodifier_normal=""
+        titlemodifier_privatebrowsing="&mainWindow.titlePrivateBrowsingSuffix;"
+#else
+        title_privatebrowsing="&mainWindow.titlemodifier; &mainWindow.titlePrivateBrowsingSuffix;"
+        titlemodifier="&mainWindow.titlemodifier;"
+        titlemodifier_normal="&mainWindow.titlemodifier;"
+        titlemodifier_privatebrowsing="&mainWindow.titlemodifier; &mainWindow.titlePrivateBrowsingSuffix;"
+#endif
+        titlemenuseparator="&mainWindow.titlemodifiermenuseparator;"
+#ifdef MOZ_PERSONAS
+        lightweightthemes="true"
+        lightweightthemesfooter="browser-bottombox"
+#endif
+        windowtype="navigator:browser"
+        macanimationtype="document"
+        screenX="4" screenY="4"
+        fullscreenbutton="true"
+        retargetdocumentfocus="urlbar"
+        persist="screenX screenY width height sizemode">
+
+# All JS files which are not content (only) dependent that browser.xul
+# wishes to include *must* go into the global-scripts.inc file
+# so that they can be shared by macBrowserOverlay.xul.
+#include global-scripts.inc
+#ifdef MOZ_DEVTOOLS
+#include global-devtools-theme-scripts.inc
+#endif
+<script type="application/javascript" src="chrome://browser/content/nsContextMenu.js"/>
+
+<script type="application/javascript" src="chrome://global/content/contentAreaUtils.js"/>
+
+<script type="application/javascript" src="chrome://browser/content/places/editBookmarkOverlay.js"/>
+
+# All sets except for popupsets (commands, keys, stringbundles and broadcasters) *must* go into the
+# browser-sets.inc file for sharing with hiddenWindow.xul.
+#define FULL_BROWSER_WINDOW
+#include browser-sets.inc
+#undef FULL_BROWSER_WINDOW
+
+  <popupset id="mainPopupSet">
+    <menupopup id="tabContextMenu"
+               onpopupshowing="if (event.target == this) TabContextMenu.updateContextMenu(this);"
+               onpopuphidden="if (event.target == this) TabContextMenu.contextTab = null;">
+      <menuitem id="context_reloadTab" label="&reloadTab.label;" accesskey="&reloadTab.accesskey;"
+                oncommand="gBrowser.reloadTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_toggleMuteTab" oncommand="TabContextMenu.contextTab.toggleMuteAudio();"/>
+      <menuseparator/>
+      <menuitem id="context_pinTab" label="&pinTab.label;"
+                accesskey="&pinTab.accesskey;"
+                oncommand="gBrowser.pinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_unpinTab" label="&unpinTab.label;" hidden="true"
+                accesskey="&unpinTab.accesskey;"
+                oncommand="gBrowser.unpinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_openTabInWindow" label="&moveToNewWindow.label;"
+                accesskey="&moveToNewWindow.accesskey;"
+                tbattr="tabbrowser-multiple"
+                oncommand="gBrowser.replaceTabWithWindow(TabContextMenu.contextTab);"/>
+      <menuseparator/>
+      <menuitem id="context_reloadAllTabs" label="&reloadAllTabs.label;" accesskey="&reloadAllTabs.accesskey;"
+                tbattr="tabbrowser-multiple-visible"
+                oncommand="gBrowser.reloadAllTabs();"/>
+      <menuitem id="context_bookmarkAllTabs"
+                label="&bookmarkAllTabs.label;"
+                accesskey="&bookmarkAllTabs.accesskey;"
+                command="Browser:BookmarkAllTabs"/>
+      <menuitem id="context_closeTabsToTheEnd" label="&closeTabsToTheEnd.label;" accesskey="&closeTabsToTheEnd.accesskey;"
+                oncommand="gBrowser.removeTabsToTheEndFrom(TabContextMenu.contextTab);"/>
+      <menuitem id="context_closeOtherTabs" label="&closeOtherTabs.label;" accesskey="&closeOtherTabs.accesskey;"
+                oncommand="gBrowser.removeAllTabsBut(TabContextMenu.contextTab);"/>
+      <menuseparator/>
+      <menuitem id="context_undoCloseTab"
+                label="&undoCloseTab.label;"
+                accesskey="&undoCloseTab.accesskey;"
+                observes="History:UndoCloseTab"/>
+      <menuitem id="context_closeTab" label="&closeTab.label;" accesskey="&closeTab.accesskey;"
+                oncommand="gBrowser.removeTab(TabContextMenu.contextTab, { animate: true });"/>
+    </menupopup>
+
+    <!-- bug 415444/582485: event.stopPropagation is here for the cloned version
+         of this menupopup -->
+    <menupopup id="backForwardMenu"
+               onpopupshowing="return FillHistoryMenu(event.target);"
+               oncommand="gotoHistoryIndex(event); event.stopPropagation();"
+               onclick="checkForMiddleClick(this, event);"/>
+    <tooltip id="aHTMLTooltip" page="true"/>
+
+    <!-- for search and content formfill/pw manager -->
+    <panel type="autocomplete" id="PopupAutoComplete" noautofocus="true" hidden="true"/>
+    <panel type="private-autocomplete" id="PopupAutoComplete" noautofocus="true" hidden="true"/>
+
+    <!-- for url bar autocomplete -->
+    <panel type="autocomplete-richlistbox" id="PopupAutoCompleteRichResult" noautofocus="true" hidden="true"/>
+    <panel type="private-autocomplete-richlistbox" id="PopupAutoCompleteRichResult" noautofocus="true" hidden="true"/>
+
+    <!-- for date/time picker. consumeoutsideclicks is set to never, so that
+         clicks on the anchored input box are never consumed. -->
+    <panel id="DateTimePickerPanel"
+           type="arrow"
+           hidden="true"
+           orient="vertical"
+           noautofocus="true"
+           norolluponanchor="true"
+           consumeoutsideclicks="never"
+           level="parent"
+           tabspecific="true">
+      <iframe id="dateTimePopupFrame"/>
+    </panel>
+
+    <!-- for invalid form error message -->
+    <panel id="invalid-form-popup" type="arrow" orient="vertical" noautofocus="true" hidden="true" level="parent">
+      <description/>
+    </panel>
+
+    <panel id="editBookmarkPanel"
+           type="arrow"
+           orient="vertical"
+           ignorekeys="true"
+           consumeoutsideclicks="true"
+           hidden="true"
+           onpopupshown="StarUI.panelShown(event);"
+           aria-labelledby="editBookmarkPanelTitle">
+      <row id="editBookmarkPanelHeader" align="center" hidden="true">
+        <vbox align="center">
+          <image id="editBookmarkPanelStarIcon"/>
+        </vbox>
+        <vbox>
+          <label id="editBookmarkPanelTitle"/>
+          <description id="editBookmarkPanelDescription"/>
+          <hbox>
+            <button id="editBookmarkPanelRemoveButton"
+                    class="editBookmarkPanelHeaderButton"
+                    oncommand="StarUI.removeBookmarkButtonCommand();"
+                    accesskey="&editBookmark.removeBookmark.accessKey;"/>
+          </hbox>
+        </vbox>
+      </row>
+      <vbox id="editBookmarkPanelContent" flex="1" hidden="true"/>
+      <hbox id="editBookmarkPanelBottomButtons" pack="end">
+#ifndef XP_UNIX
+        <button id="editBookmarkPanelDoneButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.done.label;"
+                default="true"
+                oncommand="StarUI.panel.hidePopup();"/>
+        <button id="editBookmarkPanelDeleteButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.cancel.label;"
+                oncommand="StarUI.cancelButtonOnCommand();"/>
+#else
+        <button id="editBookmarkPanelDeleteButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.cancel.label;"
+                oncommand="StarUI.cancelButtonOnCommand();"/>
+        <button id="editBookmarkPanelDoneButton"
+                class="editBookmarkPanelBottomButton"
+                label="&editBookmark.done.label;"
+                default="true"
+                oncommand="StarUI.panel.hidePopup();"/>
+#endif
+      </hbox>
+    </panel>
+
+    <menupopup id="toolbar-context-menu"
+               onpopupshowing="onViewToolbarsPopupShowing(event);">
+      <menuseparator/>
+      <menuitem command="cmd_ToggleTabsOnTop"
+                type="checkbox"
+                label="&viewTabsOnTop.label;"
+                accesskey="&viewTabsOnTop.accesskey;"/>
+      <menuitem command="cmd_CustomizeToolbars"
+                label="&viewCustomizeToolbar.label;"
+                accesskey="&viewCustomizeToolbar.accesskey;"/>
+    </menupopup>
+
+    <menupopup id="blockedPopupOptions"
+               onpopupshowing="gPopupBlockerObserver.fillPopupList(event);"
+               onpopuphiding="gPopupBlockerObserver.onPopupHiding(event);">
+      <menuitem observes="blockedPopupAllowSite"/>
+      <menuitem observes="blockedPopupEditSettings"/>
+      <menuitem observes="blockedPopupDontShowMessage"/>
+      <menuseparator observes="blockedPopupsSeparator"/>
+    </menupopup>
+
+    <menupopup id="autohide-context"
+           onpopupshowing="FullScreen.getAutohide(this.firstChild);">
+      <menuitem type="checkbox" label="&fullScreenAutohide.label;"
+                accesskey="&fullScreenAutohide.accesskey;"
+                oncommand="FullScreen.setAutohide();"/>
+      <menuseparator/>
+      <menuitem label="&fullScreenExit.label;"
+                accesskey="&fullScreenExit.accesskey;"
+                oncommand="BrowserFullScreen();"/>
+    </menupopup>
+
+    <menupopup id="contentAreaContextMenu" pagemenu="start"
+               onpopupshowing="if (event.target != this)
+                                 return true;
+                               gContextMenu = new nsContextMenu(this, event.shiftKey);
+                               if (gContextMenu.shouldDisplay)
+                                 updateEditUIVisibility();
+                               return gContextMenu.shouldDisplay;"
+               onpopuphiding="if (event.target != this)
+                                return;
+                              gContextMenu.hiding();
+                              gContextMenu = null;
+                              updateEditUIVisibility();">
+#include browser-context.inc
+    </menupopup>
+
+    <menupopup id="placesContext"/>
+
+
+    <panel id="ctrlTab-panel" class="KUI-panel" hidden="true" norestorefocus="true" level="top">
+      <hbox>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+        <button class="ctrlTab-preview" flex="1"/>
+      </hbox>
+      <hbox pack="center">
+        <button id="ctrlTab-showAll" class="ctrlTab-preview" noicon="true"/>
+      </hbox>
+    </panel>
+
+    <panel id="allTabs-panel" hidden="true" norestorefocus="true" ignorekeys="true"
+           onmouseover="allTabs._updateTabCloseButton(event);">
+      <hbox id="allTabs-meta" align="center">
+        <spacer flex="1"/>
+        <textbox id="allTabs-filter"
+                 tooltiptext="&allTabs.filter.emptyText;"
+                 type="search"
+                 oncommand="allTabs.filter();"/>
+        <spacer flex="1"/>
+        <toolbarbutton class="KUI-panel-closebutton"
+                       oncommand="allTabs.close()"
+                       tooltiptext="&closeCmd.label;"/>
+      </hbox>
+      <stack id="allTabs-stack">
+        <vbox id="allTabs-container"><hbox/></vbox>
+        <toolbarbutton id="allTabs-tab-close-button"
+                       class="tabs-closebutton close-icon"
+                       oncommand="allTabs.closeTab(event);"
+                       tooltiptext="&closeCmd.label;"
+                       style="visibility:hidden"/>
+      </stack>
+    </panel>
+
+    <!-- Bookmarks and history tooltip -->
+    <tooltip id="bhTooltip"/>
+
+    <panel id="customizeToolbarSheetPopup"
+           noautohide="true"
+           sheetstyle="&dialog.dimensions;"/>
+
+    <tooltip id="tabbrowser-tab-tooltip" onpopupshowing="gBrowser.createTooltip(event);"/>
+
+    <tooltip id="back-button-tooltip">
+      <label class="tooltip-label" value="&backButton.tooltip;"/>
+#ifdef XP_MACOSX
+      <label class="tooltip-label" value="&backForwardButtonMenuMac.tooltip;"/>
+#else
+      <label class="tooltip-label" value="&backForwardButtonMenu.tooltip;"/>
+#endif
+    </tooltip>
+
+    <tooltip id="forward-button-tooltip">
+      <label class="tooltip-label" value="&forwardButton.tooltip;"/>
+#ifdef XP_MACOSX
+      <label class="tooltip-label" value="&backForwardButtonMenuMac.tooltip;"/>
+#else
+      <label class="tooltip-label" value="&backForwardButtonMenu.tooltip;"/>
+#endif
+    </tooltip>
+
+#include popup-notifications.inc
+
+  </popupset>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+<vbox id="titlebar">
+  <hbox id="titlebar-content">
+#ifdef MENUBAR_CAN_AUTOHIDE
+    <hbox id="appmenu-button-container">
+      <button id="appmenu-button"
+              type="menu"
+              label="&brandShortName;"
+              tooltiptext="&appMenuButton.tooltip;"
+              style="-moz-user-focus: ignore;">
+#include browser-appmenu.inc
+      </button>
+    </hbox>
+#endif
+#ifndef XP_MACOSX
+    <spacer id="titlebar-spacer" flex="1"/>
+#endif
+    <hbox id="titlebar-buttonbox-container" align="start">
+      <hbox id="titlebar-buttonbox">
+        <toolbarbutton class="titlebar-button" id="titlebar-min" oncommand="window.minimize();"/>
+        <toolbarbutton class="titlebar-button" id="titlebar-max" oncommand="onTitlebarMaxClick();"/>
+        <toolbarbutton class="titlebar-button" id="titlebar-close" command="cmd_closeWindow"/>
+      </hbox>
+    </hbox>
+  </hbox>
+</vbox>
+#endif
+
+<deck flex="1" id="tab-view-deck">
+<vbox flex="1" id="browser-panel">
+
+  <toolbox id="navigator-toolbox"
+           defaultmode="icons" mode="icons"
+           iconsize="large">
+    <!-- Menu -->
+    <toolbar type="menubar" id="toolbar-menubar" class="chromeclass-menubar" customizable="true"
+             defaultset="menubar-items"
+             mode="icons" iconsize="small" defaulticonsize="small"
+             lockiconsize="true"
+#ifdef MENUBAR_CAN_AUTOHIDE
+             toolbarname="&menubarCmd.label;"
+             accesskey="&menubarCmd.accesskey;"
+#endif
+             context="toolbar-context-menu">
+      <toolbaritem id="menubar-items" align="center">
+# The entire main menubar is placed into browser-menubar.inc, so that it can be shared by
+# hiddenWindow.xul.
+#include browser-menubar.inc
+      </toolbaritem>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+      <hbox class="titlebar-placeholder" type="appmenu-button" ordinal="0"/>
+      <hbox class="titlebar-placeholder" type="caption-buttons" ordinal="1000"/>
+#endif
+    </toolbar>
+
+    <toolbar id="nav-bar" class="toolbar-primary chromeclass-toolbar"
+             toolbarname="&navbarCmd.label;" accesskey="&navbarCmd.accesskey;"
+             fullscreentoolbar="true" mode="icons" customizable="true"
+             iconsize="large"
+             defaultset="unified-back-forward-button,reload-button,stop-button,home-button,urlbar-container,search-container,bookmarks-menu-button,history-menu-button,downloads-button,window-controls"
+             context="toolbar-context-menu">
+
+      <toolbaritem id="unified-back-forward-button" class="chromeclass-toolbar-additional"
+                   context="backForwardMenu" removable="true"
+                   forwarddisabled="true"
+                   title="&backForwardItem.title;">
+        <toolbarbutton id="back-button" class="toolbarbutton-1"
+                       label="&backCmd.label;"
+                       command="Browser:BackOrBackDuplicate"
+                       onclick="checkForMiddleClick(this, event);"
+                       tooltip="back-button-tooltip"/>
+        <toolbarbutton id="forward-button" class="toolbarbutton-1"
+                       label="&forwardCmd.label;"
+                       command="Browser:ForwardOrForwardDuplicate"
+                       onclick="checkForMiddleClick(this, event);"
+                       tooltip="forward-button-tooltip"/>
+        <dummyobservertarget hidden="true"
+                             onbroadcast="if (this.getAttribute('disabled') == 'true')
+                                            this.parentNode.setAttribute('forwarddisabled', 'true');
+                                          else
+                                            this.parentNode.removeAttribute('forwarddisabled');">
+          <observes element="Browser:ForwardOrForwardDuplicate" attribute="disabled"/>
+        </dummyobservertarget>
+      </toolbaritem>
+
+      <toolbarbutton id="reload-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&reloadCmd.label;" removable="true"
+                     command="Browser:ReloadOrDuplicate"
+                     onclick="checkForMiddleClick(this, event);"
+                     tooltiptext="&reloadButton.tooltip;"/>
+
+      <toolbarbutton id="stop-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&stopCmd.label;" removable="true"
+                     command="Browser:Stop"
+                     tooltiptext="&stopButton.tooltip;"/>
+
+      <toolbarbutton id="home-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     persist="class" removable="true"
+                     label="&homeButton.label;"
+                     ondragover="homeButtonObserver.onDragOver(event)"
+                     ondragenter="homeButtonObserver.onDragOver(event)"
+                     ondrop="homeButtonObserver.onDrop(event)"
+                     ondragexit="homeButtonObserver.onDragExit(event)"
+                     onclick="BrowserGoHome(event);"
+                     aboutHomeOverrideTooltip="&abouthome.pageTitle;"/>
+
+      <toolbaritem id="urlbar-container" align="center" flex="400" persist="width" combined="true"
+                   title="&locationItem.title;" class="chromeclass-location" removable="true">
+        <textbox id="urlbar" flex="1"
+                 placeholder=""
+                 type="private-autocomplete"
+                 autocompletesearch="urlinline history"
+                 autocompletesearchparam="enable-actions"
+                 autocompletepopup="PopupAutoCompleteRichResult"
+                 completeselectedindex="true"
+                 tabscrolling="true"
+                 showcommentcolumn="true"
+                 showimagecolumn="true"
+                 enablehistory="true"
+                 maxrows="6"
+                 newlines="stripsurroundingwhitespace"
+                 oninput="gBrowser.userTypedValue = this.value;"
+                 ontextentered="this.handleCommand(param);"
+                 ontextreverted="return this.handleRevert();"
+                 pageproxystate="invalid"
+                 onfocus="document.getElementById('identity-box').style.MozUserFocus= 'normal'"
+                 onblur="setTimeout(function() document.getElementById('identity-box').style.MozUserFocus = '', 0);">
+          <box id="notification-popup-box" hidden="true" align="center">
+            <image id="default-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="geo-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="addons-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="indexedDB-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="password-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="plugins-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="web-notifications-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="alert-plugins-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="blocked-plugins-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="mixed-content-blocked-notification-icon" class="notification-anchor-icon" role="button"/>
+#ifdef MOZ_WEBRTC
+            <image id="webRTC-shareDevices-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="webRTC-sharingDevices-notification-icon" class="notification-anchor-icon" role="button"/>
+#endif
+            <image id="pointerLock-notification-icon" class="notification-anchor-icon" role="button"/>
+            <image id="servicesInstall-notification-icon" class="notification-anchor-icon" role="button"/>
+          </box>
+          <!-- Use onclick instead of normal popup= syntax since the popup
+               code fires onmousedown, and hence eats our favicon drag events.
+               We only add the identity-box button to the tab order when the location bar
+               has focus, otherwise pressing F6 focuses it instead of the location bar -->
+          <box id="identity-box" role="button"
+               align="center"
+               onclick="gIdentityHandler.handleIdentityButtonEvent(event);"
+               onkeypress="gIdentityHandler.handleIdentityButtonEvent(event);"
+               ondragstart="gIdentityHandler.onDragStart(event);">
+            <image id="page-proxy-favicon"
+                   onclick="PageProxyClickHandler(event);"
+                   pageproxystate="invalid"/>
+            <hbox id="identity-icon-labels">
+              <label id="identity-icon-label" class="plain" flex="1"/>
+              <label id="identity-icon-country-label" class="plain"/>
+            </hbox>
+          </box>
+          <box id="urlbar-display-box" align="center">
+            <label id="urlbar-display" value="&urlbar.switchToTab.label;"/>
+          </box>
+          <hbox id="urlbar-icons">
+            <image id="page-report-button"
+                   class="urlbar-icon"
+                   hidden="true"
+                   tooltiptext="&pageReportIcon.tooltip;"
+                   onclick="gPopupBlockerObserver.onReportButtonClick(event);"/>
+            <button type="menu"
+                    style="-moz-user-focus: none"
+                    class="plain urlbar-icon"
+                    id="ub-feed-button"
+                    collapsed="true"
+                    tooltiptext="&feedButton.tooltip;"
+                    onclick="return FeedHandler.onFeedButtonPMClick(event);">
+              <menupopup position="after_end"
+                         id="ub-feed-menu"
+                         onpopupshowing="return FeedHandler.buildFeedList(this);"
+                         oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                         onclick="checkForMiddleClick(this, event);"/>
+            </button>                   
+            <image id="star-button"
+                   class="urlbar-icon"
+                   onclick="BookmarkingUI.onCommand(event);"/>
+            <image id="go-button"
+                   class="urlbar-icon"
+                   tooltiptext="&goEndCap.tooltip;"
+                   onclick="gURLBar.handleCommand(event);"/>
+          </hbox>
+          <toolbarbutton id="urlbar-go-button"
+                         class="chromeclass-toolbar-additional"
+                         onclick="gURLBar.handleCommand(event);"
+                         tooltiptext="&goEndCap.tooltip;"/>
+          <toolbarbutton id="urlbar-reload-button"
+                         class="chromeclass-toolbar-additional"
+                         command="Browser:ReloadOrDuplicate"
+                         onclick="checkForMiddleClick(this, event);"
+                         tooltiptext="&reloadButton.tooltip;"/>
+          <toolbarbutton id="urlbar-stop-button"
+                         class="chromeclass-toolbar-additional"
+                         command="Browser:Stop"
+                         tooltiptext="&stopButton.tooltip;"/>
+        </textbox>
+      </toolbaritem>
+
+      <toolbaritem id="search-container" title="&searchItem.title;"
+                   align="center" class="chromeclass-toolbar-additional"
+                   flex="100" persist="width" removable="true">
+        <searchbar id="searchbar" flex="1"/>
+      </toolbaritem>
+#ifdef MOZ_WEBRTC
+      <toolbarbutton id="webrtc-status-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     type="menu"
+                     hidden="true"
+                     orient="horizontal"
+                     label="&webrtcIndicatorButton.label;"
+                     tooltiptext="&webrtcIndicatorButton.tooltip;">
+        <menupopup onpopupshowing="WebrtcIndicator.fillPopup(this);"
+                   onpopuphiding="WebrtcIndicator.clearPopup(this);"
+                   oncommand="WebrtcIndicator.menuCommand(event.target);"/>
+      </toolbarbutton>
+#endif
+      <toolbarbutton id="bookmarks-menu-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     persist="class"
+                     removable="true"
+                     type="menu"
+                     label="&bookmarksMenuButton.label;"
+                     tooltiptext="&bookmarksMenuButton.tooltip;"
+                     onclick="if (event.button == 1)
+                                toggleSidebar('viewBookmarksSidebar');"
+                     ondragenter="PlacesMenuDNDHandler.onDragEnter(event);"
+                     ondragover="PlacesMenuDNDHandler.onDragOver(event);"
+                     ondragleave="PlacesMenuDNDHandler.onDragLeave(event);"
+                     ondrop="PlacesMenuDNDHandler.onDrop(event);">
+        <menupopup id="BMB_bookmarksPopup"
+                   placespopup="true"
+                   context="placesContext"
+                   openInTabs="children"
+                   oncommand="BookmarksEventHandler.onCommand(event, this.parentNode._placesView);"
+                   onclick="event.stopPropagation();
+                            BookmarksEventHandler.onClick(event, this.parentNode._placesView);"
+                   onpopupshowing="BookmarkingUI.onPopupShowing(event);
+                                   if (!this.parentNode._placesView)
+                                     new PlacesMenu(event, 'place:folder=BOOKMARKS_MENU');"
+                   tooltip="bhTooltip" popupsinherittooltip="true">
+          <menuitem id="BMB_viewBookmarksToolbar"
+                    placesanonid="view-toolbar"
+                    toolbarId="PersonalToolbar"
+                    type="checkbox"
+                    oncommand="onViewToolbarCommand(event)"
+                    label="&viewBookmarksToolbar.label;"/>
+          <menuseparator/>
+          <menuitem id="BMB_bookmarksShowAll"
+#ifndef XP_MACOSX
+                    class="menuitem-iconic"
+#endif
+                    label="&organizeBookmarks.label;"
+                    command="Browser:ShowAllBookmarks"
+                    key="manBookmarkKb"/>
+          <menuseparator/>
+          <menuitem id="BMB_bookmarkThisPage"
+#ifndef XP_MACOSX
+                    class="menuitem-iconic"
+#endif
+                    label="&bookmarkThisPageCmd.label;"
+                    command="Browser:AddBookmarkAs"
+                    key="addBookmarkAsKb"/>
+          <menuitem id="BMB_subscribeToPageMenuitem"
+#ifndef XP_MACOSX
+                    class="menuitem-iconic"
+#endif
+                    label="&subscribeToPageMenuitem.label;"
+                    oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                    onclick="checkForMiddleClick(this, event);"
+                    observes="singleFeedMenuitemState"/>
+          <menu id="BMB_subscribeToPageMenupopup"
+#ifndef XP_MACOSX
+                class="menu-iconic"
+#endif
+                label="&subscribeToPageMenupopup.label;"
+                observes="multipleFeedsMenuState">
+            <menupopup id="BMB_subscribeToPageSubmenuMenupopup"
+                       onpopupshowing="return FeedHandler.buildFeedList(event.target);"
+                       oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                       onclick="checkForMiddleClick(this, event);"/>
+          </menu>
+          <menuseparator/>
+          <menu id="BMB_bookmarksToolbar"
+                placesanonid="toolbar-autohide"
+                class="menu-iconic bookmark-item"
+                label="&personalbarCmd.label;"
+                container="true">
+            <menupopup id="BMB_bookmarksToolbarPopup"
+                       placespopup="true"
+                       context="placesContext"
+                       onpopupshowing="if (!this.parentNode._placesView)
+                                         new PlacesMenu(event, 'place:folder=TOOLBAR');"/>
+          </menu>
+          <menuseparator/>
+          <!-- Bookmarks menu items -->
+          <menuseparator builder="end"
+                         class="hide-if-empty-places-result"/>
+          <menuitem id="BMB_unsortedBookmarks"
+                    class="menuitem-iconic"
+                    label="&bookmarksMenuButton.unsorted.label;"
+                    oncommand="PlacesCommandHook.showPlacesOrganizer('UnfiledBookmarks');"/>
+        </menupopup>
+      </toolbarbutton>
+
+      <toolbarbutton id="history-menu-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     persist="class"
+                     removable="true"                     
+                     type="menu"
+                     label="&historyButton.label;"
+                     tooltiptext="&historyButton.tooltip;"
+                     onclick="if (event.button == 1)
+                                toggleSidebar('viewHistorySidebar');">
+        <menupopup id="HMB_historyPopup"
+                   placespopup="true"
+                   context="placesContext"
+                   oncommand="this.parentNode._placesView._onCommand(event);"
+                   onclick="event.stopPropagation();
+                            checkForMiddleClick(this, event);"
+                   onpopupshowing="if (!this.parentNode._placesView)
+                                     new HistoryMenu(event);"
+                   tooltip="bhTooltip"
+                   popupsinherittooltip="true">
+          <menuitem id="HMB_showAllHistory"
+                    label="&showAllHistoryCmd2.label;"
+#ifndef XP_MACOSX
+                    class="menuitem-iconic"
+                    key="showAllHistoryKb"
+#endif
+                    command="Browser:ShowAllHistory"/>
+          <menuitem id="HMB_sanitizeItem"
+#ifndef XP_MACOSX
+                    class="menuitem-iconic"
+#endif
+                    label="&clearRecentHistory.label;"
+                    key="key_sanitize"
+                    command="Tools:Sanitize"/>
+          <menuseparator id="HMB_sanitizeSeparator"/>
+#ifdef MOZ_SERVICES_SYNC
+          <menuitem id="HMB_sync-tabs-menuitem"
+                    class="syncTabsMenuItem"
+                    label="&syncTabsMenu2.label;"
+                    oncommand="BrowserOpenSyncTabs();"
+                    disabled="true"/>
+#endif
+          <menuitem id="HMB_historyRestoreLastSession"
+                    label="&historyRestoreLastSession.label;"
+                    command="Browser:RestoreLastSession"/>
+          <menu id="HMB_historyUndoMenu"
+                class="recentlyClosedTabsMenu"
+                label="&historyUndoMenu.label;"
+                disabled="true">
+            <menupopup id="HMB_historyUndoPopup"
+                       placespopup="true"
+                       onpopupshowing="document.getElementById('history-menu-button')._placesView.populateUndoSubmenu();"/>
+          </menu>
+          <menu id="HMB_historyUndoWindowMenu"
+                class="recentlyClosedWindowsMenu"
+                label="&historyUndoWindowMenu.label;"
+                disabled="true">
+            <menupopup id="HMB_historyUndoWindowPopup"
+                       placespopup="true"
+                       onpopupshowing="document.getElementById('history-menu-button')._placesView.populateUndoWindowSubmenu();"/>
+          </menu>
+          <menuseparator id="HMB_startHistorySeparator"
+                         class="hide-if-empty-places-result"/>
+          <!-- History menu items -->
+        </menupopup>
+      </toolbarbutton>
+
+      <hbox id="window-controls" hidden="true" pack="end">
+        <toolbarbutton id="minimize-button"
+                       tooltiptext="&fullScreenMinimize.tooltip;"
+                       oncommand="window.minimize();"/>
+
+        <toolbarbutton id="restore-button"
+                       tooltiptext="&fullScreenRestore.tooltip;"
+                       oncommand="BrowserFullScreen();"/>
+
+        <toolbarbutton id="close-button"
+                       tooltiptext="&fullScreenClose.tooltip;"
+                       oncommand="BrowserTryToCloseWindow();"/>
+      </hbox>
+    </toolbar>
+
+    <toolbarset id="customToolbars" context="toolbar-context-menu"/>
+
+    <toolbar id="PersonalToolbar"
+             mode="icons" iconsize="small" defaulticonsize="small"
+             lockiconsize="true"
+             class="chromeclass-directories"
+             context="toolbar-context-menu"
+             defaultset="personal-bookmarks"
+             toolbarname="&personalbarCmd.label;" accesskey="&personalbarCmd.accesskey;"
+             collapsed="false"
+             customizable="true">
+      <toolbaritem flex="1" id="personal-bookmarks" title="&bookmarksItem.title;"
+                   removable="true">
+        <hbox flex="1"
+              id="PlacesToolbar"
+              context="placesContext"
+              onclick="BookmarksEventHandler.onClick(event, this._placesView);"
+              oncommand="BookmarksEventHandler.onCommand(event, this._placesView);"
+              tooltip="bhTooltip"
+              popupsinherittooltip="true">
+          <toolbarbutton class="bookmark-item bookmarks-toolbar-customize"
+                         mousethrough="never"
+                         label="&bookmarksToolbarItem.label;"/>
+          <hbox flex="1">
+            <hbox align="center">
+              <image id="PlacesToolbarDropIndicator"
+                     mousethrough="always"
+                     collapsed="true"/>
+            </hbox>
+            <scrollbox orient="horizontal"
+                       id="PlacesToolbarItems"
+                       flex="1"/>
+            <toolbarbutton type="menu"
+                           id="PlacesChevron"
+                           class="chevron"
+                           mousethrough="never"
+                           collapsed="true"
+                           tooltiptext="&bookmarksToolbarChevron.tooltip;"
+                           onpopupshowing="document.getElementById('PlacesToolbar')
+                                                   ._placesView._onChevronPopupShowing(event);">
+              <menupopup id="PlacesChevronPopup"
+                         placespopup="true"
+                         tooltip="bhTooltip" popupsinherittooltip="true"
+                         context="placesContext"/>
+            </toolbarbutton>
+          </hbox>
+        </hbox>
+      </toolbaritem>
+    </toolbar>
+
+#ifdef MENUBAR_CAN_AUTOHIDE
+#ifndef CAN_DRAW_IN_TITLEBAR
+#define APPMENU_ON_TABBAR
+#endif
+#endif
+
+
+    <toolbar id="TabsToolbar"
+             class="toolbar-primary"
+             fullscreentoolbar="true"
+             customizable="true"
+             mode="icons" lockmode="true"
+             iconsize="small" defaulticonsize="small" lockiconsize="true"
+             aria-label="&tabsToolbar.label;"
+             context="toolbar-context-menu"
+#ifdef APPMENU_ON_TABBAR
+             defaultset="appmenu-toolbar-button,tabbrowser-tabs,new-tab-button,alltabs-button,tabs-closebutton"
+#else
+             defaultset="tabbrowser-tabs,new-tab-button,alltabs-button,tabs-closebutton"
+#endif
+             collapsed="true">
+
+#ifdef APPMENU_ON_TABBAR
+      <toolbarbutton id="appmenu-toolbar-button"
+                     class="chromeclass-toolbar-additional"
+                     type="menu"
+                     label="&brandShortName;"
+                     tooltiptext="&appMenuButton.tooltip;">
+#include browser-appmenu.inc
+      </toolbarbutton>
+#endif
+
+      <tabs id="tabbrowser-tabs"
+            class="tabbrowser-tabs"
+            tabbrowser="content"
+            flex="1"
+            setfocus="false"
+            tooltip="tabbrowser-tab-tooltip">
+        <tab class="tabbrowser-tab" selected="true" fadein="true"/>
+      </tabs>
+
+      <toolbarbutton id="new-tab-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&tabCmd.label;"
+                     command="cmd_newNavigatorTab"
+                     onclick="checkForMiddleClick(this, event);"
+                     tooltiptext="&newTabButton.tooltip;"
+                     ondrop="newTabButtonObserver.onDrop(event)"
+                     ondragover="newTabButtonObserver.onDragOver(event)"
+                     ondragenter="newTabButtonObserver.onDragOver(event)"
+                     ondragexit="newTabButtonObserver.onDragExit(event)"
+                     removable="true"/>
+
+      <toolbarbutton id="alltabs-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional tabs-alltabs-button"
+                     type="menu"
+                     label="&listAllTabs.label;"
+                     tooltiptext="&listAllTabs.label;"
+                     removable="true">
+        <menupopup id="alltabs-popup" position="after_end"/>
+      </toolbarbutton>
+
+      <toolbarbutton id="tabs-closebutton"
+                     class="close-button tabs-closebutton close-icon"
+                     command="cmd_close"
+                     label="&closeTab.label;"
+                     tooltiptext="&closeTab.label;"/>
+
+#ifdef CAN_DRAW_IN_TITLEBAR
+      <hbox class="titlebar-placeholder" type="appmenu-button" ordinal="0"/>
+      <hbox class="titlebar-placeholder" type="caption-buttons" ordinal="1000"/>
+#endif
+    </toolbar>
+
+    <toolbarpalette id="BrowserToolbarPalette">
+
+# Update primaryToolbarButtons in browser/themes/shared/browser.inc when adding
+# or removing default items with the toolbarbutton-1 class.
+
+      <toolbarbutton id="print-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&printButton.label;" command="cmd_print"
+                     tooltiptext="&printButton.tooltip;"/>
+
+      <!-- This is a placeholder for the Downloads Indicator.  It is visible
+           during the customization of the toolbar, in the palette, and before
+           the Downloads Indicator overlay is loaded. -->
+      <toolbarbutton id="downloads-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     oncommand="DownloadsIndicatorView.onCommand(event);"
+                     ondrop="DownloadsIndicatorView.onDrop(event);"
+                     ondragover="DownloadsIndicatorView.onDragOver(event);"
+                     ondragenter="DownloadsIndicatorView.onDragOver(event);"
+                     label="&downloads.label;"
+                     tooltiptext="&downloads.tooltip;"/>
+
+      <toolbarbutton id="history-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     observes="viewHistorySidebar" label="&historyButton.label;"
+                     tooltiptext="&historyButton.tooltip;"/>
+
+      <toolbarbutton id="bookmarks-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     observes="viewBookmarksSidebar" label="&bookmarksButton.label;"
+                     tooltiptext="&bookmarksButton.tooltip;"
+                     ondrop="bookmarksButtonObserver.onDrop(event)"
+                     ondragover="bookmarksButtonObserver.onDragOver(event)"
+                     ondragenter="bookmarksButtonObserver.onDragOver(event)"
+                     ondragexit="bookmarksButtonObserver.onDragExit(event)"/>
+
+      <toolbarbutton id="new-window-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&newNavigatorCmd.label;"
+                     command="key_newNavigator"
+                     tooltiptext="&newWindowButton.tooltip;"
+                     ondrop="newWindowButtonObserver.onDrop(event)"
+                     ondragover="newWindowButtonObserver.onDragOver(event)"
+                     ondragenter="newWindowButtonObserver.onDragOver(event)"
+                     ondragexit="newWindowButtonObserver.onDragExit(event)"/>
+
+      <toolbarbutton id="fullscreen-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     observes="View:FullScreen"
+                     type="checkbox"
+                     label="&fullScreenCmd.label;"
+                     tooltiptext="&fullScreenButton.tooltip;"/>
+
+      <toolbaritem id="zoom-controls" class="chromeclass-toolbar-additional"
+                   title="&zoomControls.label;">
+        <toolbarbutton id="zoom-out-button" class="toolbarbutton-1"
+                       label="&fullZoomReduceCmd.label;"
+                       command="cmd_fullZoomReduce"
+                       tooltiptext="&zoomOutButton.tooltip;"/>
+        <toolbarbutton id="zoom-in-button" class="toolbarbutton-1"
+                       label="&fullZoomEnlargeCmd.label;"
+                       command="cmd_fullZoomEnlarge"
+                       tooltiptext="&zoomInButton.tooltip;"/>
+      </toolbaritem>
+
+      <toolbarbutton id="feed-button"
+                     type="menu"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     disabled="true"
+                     label="&feedButton.label;"
+                     tooltiptext="&feedButton.tooltip;"
+                     onclick="return FeedHandler.onFeedButtonClick(event);">
+        <menupopup position="after_end"
+                   id="feed-menu"
+                   onpopupshowing="return FeedHandler.buildFeedList(this);"
+                   oncommand="return FeedHandler.subscribeToFeed(null, event);"
+                   onclick="checkForMiddleClick(this, event);"/>
+      </toolbarbutton>
+
+      <toolbarbutton id="cut-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&cutCmd.label;"
+                     command="cmd_cut"
+                     tooltiptext="&cutButton.tooltip;"/>
+
+      <toolbarbutton id="copy-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&copyCmd.label;"
+                     command="cmd_copy"
+                     tooltiptext="&copyButton.tooltip;"/>
+
+      <toolbarbutton id="paste-button" class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&pasteCmd.label;"
+                     command="cmd_paste"
+                     tooltiptext="&pasteButton.tooltip;"/>
+
+#ifdef MOZ_SERVICES_SYNC
+      <toolbarbutton id="sync-button"
+                     class="toolbarbutton-1 chromeclass-toolbar-additional"
+                     label="&syncToolbarButton.label;"
+                     oncommand="gSyncUI.handleToolbarButton()"/>
+#endif
+
+      <toolbaritem id="navigator-throbber" title="&throbberItem.title;" align="center" pack="center"
+                   mousethrough="always">
+        <image/>
+      </toolbaritem>
+    </toolbarpalette>
+  </toolbox>
+
+  <hbox id="fullscr-toggler" hidden="true"/>
+
+  <hbox flex="1" id="browser">
+    <vbox id="browser-border-start" hidden="true" layer="true"/>
+    <vbox id="sidebar-box" hidden="true" class="chromeclass-extrachrome">
+      <sidebarheader id="sidebar-header" align="center">
+        <label id="sidebar-title" persist="value" flex="1" crop="end" control="sidebar"/>
+        <image id="sidebar-throbber"/>
+        <toolbarbutton class="tabs-closebutton close-icon" tooltiptext="&sidebarCloseButton.tooltip;" oncommand="toggleSidebar();"/>
+      </sidebarheader>
+      <browser id="sidebar" flex="1" autoscroll="false" disablehistory="true"
+                style="min-width: 14em; width: 18em; max-width: 36em;"/>
+    </vbox>
+
+    <splitter id="sidebar-splitter" class="chromeclass-extrachrome sidebar-splitter" hidden="true"/>
+    <vbox id="appcontent" flex="1">
+      <tabbrowser id="content" disablehistory="true"
+                  flex="1" contenttooltip="aHTMLTooltip"
+                  tabcontainer="tabbrowser-tabs"
+                  contentcontextmenu="contentAreaContextMenu"
+                  autocompletepopup="PopupAutoComplete"
+                  datetimepicker="DateTimePickerPanel"
+                  authdosprotected="true"/>
+      <chatbar id="pinnedchats" layer="true" mousethrough="always" hidden="true"/>
+      <statuspanel id="statusbar-display" inactive="true"/>
+    </vbox>
+    <vbox id="browser-border-end" hidden="true" layer="true"/>
+  </hbox>
+
+  <hbox id="full-screen-warning-container" hidden="true" fadeout="true">
+    <hbox style="width: 100%;" pack="center"> <!-- Inner hbox needed due to bug 579776. -->
+      <vbox id="full-screen-warning-message" align="center">
+        <description id="full-screen-domain-text"/>
+        <description class="full-screen-description" value="&fullscreenExitHint.value;"/>
+      </vbox>
+    </hbox>
+  </hbox>
+
+  <vbox id="browser-bottombox" layer="true">
+    <notificationbox id="global-notificationbox"/>
+    <toolbar id="addon-bar"
+             toolbarname="&statusBar.label;" accesskey="&statusBar.accesskey;"
+             collapsed="true"
+             class="toolbar-primary chromeclass-toolbar"
+             context="toolbar-context-menu" toolboxid="navigator-toolbox"
+             mode="icons" iconsize="small" defaulticonsize="small"
+             lockiconsize="true"
+             defaultset="addonbar-closebutton,spring,status-bar"
+             customizable="true"
+             key="key_toggleAddonBar">
+      <toolbarbutton id="addonbar-closebutton"
+                     class="close-icon"
+                     tooltiptext="&addonBarCloseButton.tooltip;"
+                     oncommand="setToolbarVisibility(this.parentNode, false);"/>
+      <statusbar id="status-bar" ordinal="1000"/>
+    </toolbar>
+  </vbox>
+
+#ifndef XP_UNIX
+  <svg:svg height="0">
+    <svg:clipPath id="windows-keyhole-forward-clip-path" clipPathUnits="objectBoundingBox">
+      <svg:path d="M 0,0 C 0.16,0.11 0.28,0.29 0.28,0.5 0.28,0.71 0.16,0.89 0,1 L 1,1 1,0 0,0 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="windows-urlbar-back-button-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="M 0,0 0,7.8 C 2.5,11 4,14 4,18 4,22 2.5,25 0,28 l 0,22 10000,0 0,-50 L 0,0 z"/>
+    </svg:clipPath>
+  </svg:svg>
+#endif
+#ifdef XP_MACOSX
+  <svg:svg height="0">
+    <svg:clipPath id="osx-keyhole-forward-clip-path" clipPathUnits="objectBoundingBox">
+      <svg:path d="M 0,0 C 0.15,0.12 0.25,0.3 0.25,0.5 0.25,0.7 0.15,0.88 0,1 L 1,1 1,0 0,0 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="osx-urlbar-back-button-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="m 0,-5 0,4.03 C 3.6,1.8 6,6.1 6,11 6,16 3.6,20 0,23 l 0,27 10000,0 0,-55 L 0,-5 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="osx-tab-ontop-left-curve-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="M 9,0 C 7.3,0 6,1.3 6,3 l 0,14 c 0,3 -2.2,5 -5,5 l -1,0 0,1 12,0 0,-1 0,-19 0,-3 -3,0 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="osx-tab-ontop-right-curve-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="m 0,0 0,3 0,19 0,1 12,0 0,-1 -1,0 C 8.2,22 6,20 6,17 L 6,3 C 6,1.3 4.7,0 3,0 L 0,0 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="osx-tab-onbottom-left-curve-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="m 0,0 0,1 1,0 c 2.8,0 5,2.2 5,5 l 0,14 c 0,2 1.3,3 3,3 l 3,0 0,-3 L 12,1 12,0 0,0 z"/>
+    </svg:clipPath>
+    <svg:clipPath id="osx-tab-onbottom-right-curve-clip-path" clipPathUnits="userSpaceOnUse">
+      <svg:path d="m 0,0 0,1 0,19 0,3 3,0 c 1.7,0 3,-1 3,-3 L 6,6 C 6,3.2 8.2,1 11,1 L 12,1 12,0 0,0 z"/>
+    </svg:clipPath>
+  </svg:svg>
+#endif
+
+</vbox>
+# <iframe id="tab-view"> is dynamically appended as the 2nd child of #tab-view-deck.
+#     Introducing the iframe dynamically, as needed, was found to be better than
+#     starting with an empty iframe here in browser.xul from a Ts standpoint.
+</deck>
+
+</window>
diff --git a/webbrowser/base/content/browserMountPoints.inc b/webbrowser/base/content/browserMountPoints.inc
new file mode 100644
index 0000000..e4315b0
--- /dev/null
+++ b/webbrowser/base/content/browserMountPoints.inc
@@ -0,0 +1,12 @@
+<stringbundleset id="stringbundleset"/>
+
+<commandset id="mainCommandSet"/>
+<commandset id="baseMenuCommandSet"/>
+<commandset id="placesCommands"/>
+
+<broadcasterset id="mainBroadcasterSet"/>
+
+<keyset id="mainKeyset"/>
+<keyset id="baseMenuKeyset"/>
+
+<menubar id="main-menubar"/>
\ No newline at end of file
diff --git a/webbrowser/base/content/content.js b/webbrowser/base/content/content.js
new file mode 100644
index 0000000..211a24a
--- /dev/null
+++ b/webbrowser/base/content/content.js
@@ -0,0 +1,177 @@
+/* -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
+  "resource://gre/modules/BrowserUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent",
+  "resource://gre/modules/LoginManagerContent.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "LoginFormFactory",
+  "resource://gre/modules/LoginManagerContent.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "InsecurePasswordUtils",
+  "resource://gre/modules/InsecurePasswordUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "FormSubmitObserver",
+  "resource:///modules/FormSubmitObserver.jsm");
+
+// Bug 671101 - directly using webNavigation in this context
+// causes docshells to leak
+this.__defineGetter__("webNavigation", function () {
+  return docShell.QueryInterface(Ci.nsIWebNavigation);
+});
+
+addMessageListener("WebNavigation:LoadURI", function (message) {
+  let flags = message.json.flags || webNavigation.LOAD_FLAGS_NONE;
+
+  webNavigation.loadURI(message.json.uri, flags, null, null, null);
+});
+
+// TabChildGlobal
+var global = this;
+
+// Load the form validation popup handler
+var formSubmitObserver = new FormSubmitObserver(content, this);
+
+addMessageListener("Browser:HideSessionRestoreButton", function (message) {
+  // Hide session restore button on about:home
+  let doc = content.document;
+  let container;
+  if (doc.documentURI.toLowerCase() == "about:home" &&
+      (container = doc.getElementById("sessionRestoreContainer"))){
+    container.hidden = true;
+  }
+});
+
+addEventListener("DOMFormHasPassword", function(event) {
+  LoginManagerContent.onDOMFormHasPassword(event, content);
+  let formLike = LoginFormFactory.createFromForm(event.target);
+  InsecurePasswordUtils.reportInsecurePasswords(formLike);
+});
+addEventListener("DOMAutoComplete", function(event) {
+  LoginManagerContent.onUsernameInput(event);
+});
+addEventListener("blur", function(event) {
+  LoginManagerContent.onUsernameInput(event);
+});
+
+// Provide gContextMenuContentData for 'sdk/context-menu'
+var handleContentContextMenu = function (event) {
+  let defaultPrevented = event.defaultPrevented;
+  if (!Services.prefs.getBoolPref("dom.event.contextmenu.enabled")) {
+    let plugin = null;
+    try {
+      plugin = event.target.QueryInterface(Ci.nsIObjectLoadingContent);
+    } catch (e) {}
+    if (plugin && plugin.displayedType == Ci.nsIObjectLoadingContent.TYPE_PLUGIN) {
+      // Don't open a context menu for plugins.
+      return;
+    }
+
+    defaultPrevented = false;
+  }
+
+  if (defaultPrevented)
+    return;
+
+  let addonInfo = {};
+  let subject = {
+    event: event,
+    addonInfo: addonInfo,
+  };
+  subject.wrappedJSObject = subject;
+  Services.obs.notifyObservers(subject, "content-contextmenu", null);
+
+  let doc = event.target.ownerDocument;
+  let docLocation = doc.mozDocumentURIIfNotForErrorPages;
+  docLocation = docLocation && docLocation.spec;
+  let charSet = doc.characterSet;
+  let baseURI = doc.baseURI;
+  let referrer = doc.referrer;
+  let referrerPolicy = doc.referrerPolicy;
+  let frameOuterWindowID = doc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
+                                          .getInterface(Ci.nsIDOMWindowUtils)
+                                          .outerWindowID;
+  let loginFillInfo = LoginManagerContent.getFieldContext(event.target);
+
+  // The same-origin check will be done in nsContextMenu.openLinkInTab.
+  let parentAllowsMixedContent = !!docShell.mixedContentChannel;
+
+  // get referrer attribute from clicked link and parse it
+  // if per element referrer is enabled, the element referrer overrules
+  // the document wide referrer
+  if (Services.prefs.getBoolPref("network.http.enablePerElementReferrer")) {
+    let referrerAttrValue = Services.netUtils.parseAttributePolicyString(event.target.
+                            getAttribute("referrerpolicy"));
+    if (referrerAttrValue !== Ci.nsIHttpChannel.REFERRER_POLICY_UNSET) {
+      referrerPolicy = referrerAttrValue;
+    }
+  }
+
+  // Media related cache info parent needs for saving
+  let contentType = null;
+  let contentDisposition = null;
+  if (event.target.nodeType == Ci.nsIDOMNode.ELEMENT_NODE &&
+      event.target instanceof Ci.nsIImageLoadingContent &&
+      event.target.currentURI) {
+
+    try {
+      let imageCache =
+        Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
+                                        .getImgCacheForDocument(doc);
+      let props =
+        imageCache.findEntryProperties(event.target.currentURI, doc);
+      try {
+        contentType = props.get("type", Ci.nsISupportsCString).data;
+      } catch (e) {}
+      try {
+        contentDisposition =
+          props.get("content-disposition", Ci.nsISupportsCString).data;
+      } catch (e) {}
+    } catch (e) {}
+  }
+
+  let selectionInfo = BrowserUtils.getSelectionDetails(content);
+
+  let loadContext = docShell.QueryInterface(Ci.nsILoadContext);
+
+  let browser = docShell.chromeEventHandler;
+  let mainWin = browser.ownerGlobal;
+
+  mainWin.gContextMenuContentData = {
+    isRemote: false,
+    event: event,
+    popupNode: event.target,
+    browser: browser,
+    addonInfo: addonInfo,
+    documentURIObject: doc.documentURIObject,
+    docLocation: docLocation,
+    charSet: charSet,
+    referrer: referrer,
+    referrerPolicy: referrerPolicy,
+    contentType: contentType,
+    contentDisposition: contentDisposition,
+    selectionInfo: selectionInfo,
+    loginFillInfo,
+    parentAllowsMixedContent,
+  };
+}
+
+Cc["@mozilla.org/eventlistenerservice;1"]
+  .getService(Ci.nsIEventListenerService)
+  .addSystemEventListener(global, "contextmenu", handleContentContextMenu, false);
+
+// Lazily load the finder code
+addMessageListener("Finder:Initialize", function () {
+  let {RemoteFinderListener} = Cu.import("resource://gre/modules/RemoteFinder.jsm", {});
+  new RemoteFinderListener(global);
+});
+
+addEventListener("DOMWebNotificationClicked", function(event) {
+  sendAsyncMessage("DOMWebNotificationClicked", {});
+}, false);
diff --git a/webbrowser/base/content/downloadManagerOverlay.xul b/webbrowser/base/content/downloadManagerOverlay.xul
new file mode 100644
index 0000000..9987820
--- /dev/null
+++ b/webbrowser/base/content/downloadManagerOverlay.xul
@@ -0,0 +1,32 @@
+<?xml version="1.0"?>
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
+
+<overlay id="downloadManagerOverlay"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<window id="downloadManager">
+
+#include browserMountPoints.inc
+
+<script type="application/javascript"><![CDATA[
+  window.addEventListener("load", function(event) {
+    // Bug 405696: Map Edit -> Find command to the download manager's command
+    var findMenuItem = document.getElementById("menu_find");
+    findMenuItem.setAttribute("command", "cmd_findDownload");
+    findMenuItem.setAttribute("key", "key_findDownload");
+
+    // Bug 429614: Map Edit -> Select All command to download manager's command
+    let selectAllMenuItem = document.getElementById("menu_selectAll");
+    selectAllMenuItem.setAttribute("command", "cmd_selectAllDownloads");
+    selectAllMenuItem.setAttribute("key", "key_selectAllDownloads");
+  }, false);
+]]></script>
+
+</window>
+
+</overlay>
diff --git a/webbrowser/base/content/global-devtools-theme-scripts.inc b/webbrowser/base/content/global-devtools-theme-scripts.inc
new file mode 100644
index 0000000..408728e
--- /dev/null
+++ b/webbrowser/base/content/global-devtools-theme-scripts.inc
@@ -0,0 +1,6 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<script type="application/javascript" src="chrome://browser/content/browser-devtools-theme.js"/>
diff --git a/webbrowser/base/content/global-scripts.inc b/webbrowser/base/content/global-scripts.inc
new file mode 100644
index 0000000..b4de574
--- /dev/null
+++ b/webbrowser/base/content/global-scripts.inc
@@ -0,0 +1,13 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<script type="application/javascript" src="chrome://global/content/printUtils.js"/>
+<script type="application/javascript" src="chrome://global/content/viewZoomOverlay.js"/>
+<script type="application/javascript" src="chrome://browser/content/places/browserPlacesViews.js"/>
+<script type="application/javascript" src="chrome://browser/content/browser.js"/>
+<script type="application/javascript" src="chrome://browser/content/downloads/downloads.js"/>
+<script type="application/javascript" src="chrome://browser/content/downloads/indicator.js"/>
+<script type="application/javascript" src="chrome://global/content/inlineSpellCheckUI.js"/>
+<script type="application/javascript" src="chrome://global/content/viewSourceUtils.js"/>
diff --git a/webbrowser/base/content/hiddenWindow.xul b/webbrowser/base/content/hiddenWindow.xul
new file mode 100644
index 0000000..bf201fd
--- /dev/null
+++ b/webbrowser/base/content/hiddenWindow.xul
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+# -*- Mode: HTML -*-
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifdef XP_MACOSX
+<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
+
+<window id="main-window"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+#include browserMountPoints.inc
+
+</window>
+
+#endif
diff --git a/webbrowser/base/content/highlighter.css b/webbrowser/base/content/highlighter.css
new file mode 100644
index 0000000..8fb9d80
--- /dev/null
+++ b/webbrowser/base/content/highlighter.css
@@ -0,0 +1,105 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+.highlighter-container {
+  pointer-events: none;
+}
+
+.highlighter-controls {
+  position: absolute;
+  top: 0;
+  left: 0;
+}
+
+.highlighter-outline-container {
+  overflow: hidden;
+  position: relative;
+}
+
+.highlighter-outline {
+  position: absolute;
+}
+
+.highlighter-outline[hidden] {
+  opacity: 0;
+  pointer-events: none;
+  display: -moz-box;
+}
+
+.highlighter-outline:not([disable-transitions]) {
+  transition-property: opacity, top, left, width, height;
+  transition-duration: 0.1s;
+  transition-timing-function: linear;
+}
+
+/*
+ * Node Infobar
+ */
+
+.highlighter-nodeinfobar-container {
+  position: absolute;
+  max-width: 95%;
+}
+
+.highlighter-nodeinfobar-container[hidden] {
+  opacity: 0;
+  pointer-events: none;
+  display: -moz-box;
+}
+
+.highlighter-nodeinfobar-container:not([disable-transitions]),
+.highlighter-nodeinfobar-container[disable-transitions][force-transitions] {
+  transition-property: transform, opacity, top, left;
+  transition-duration: 0.1s;
+  transition-timing-function: linear;
+}
+
+.highlighter-nodeinfobar-text {
+  overflow: hidden;
+  white-space: nowrap;
+  text-overflow: ellipsis;
+  direction: ltr;
+}
+
+.highlighter-nodeinfobar-button > .toolbarbutton-text {
+  display: none;
+}
+
+.highlighter-nodeinfobar-container:not([locked]):not(:hover) > .highlighter-nodeinfobar > .highlighter-nodeinfobar-button {
+  visibility: hidden;
+}
+
+.highlighter-nodeinfobar-container[locked] > .highlighter-nodeinfobar,
+.highlighter-nodeinfobar-container:not([locked]):hover > .highlighter-nodeinfobar {
+  pointer-events: auto;
+}
+
+html|*.highlighter-nodeinfobar-id,
+html|*.highlighter-nodeinfobar-classes,
+html|*.highlighter-nodeinfobar-pseudo-classes,
+html|*.highlighter-nodeinfobar-tagname {
+  -moz-user-select: text;
+  -moz-user-focus: normal;
+  cursor: text;
+}
+
+.highlighter-nodeinfobar-arrow {
+  display: none;
+}
+
+.highlighter-nodeinfobar-container[position="top"]:not([hide-arrow]) > .highlighter-nodeinfobar-arrow-bottom {
+  display: block;
+}
+
+.highlighter-nodeinfobar-container[position="bottom"]:not([hide-arrow]) > .highlighter-nodeinfobar-arrow-top {
+  display: block;
+}
+
+.highlighter-nodeinfobar-container[disabled] {
+  visibility: hidden;
+}
+
+html|*.highlighter-nodeinfobar-tagname {
+  text-transform: lowercase;
+}
diff --git a/webbrowser/base/content/jsConsoleOverlay.xul b/webbrowser/base/content/jsConsoleOverlay.xul
new file mode 100644
index 0000000..1bc518d
--- /dev/null
+++ b/webbrowser/base/content/jsConsoleOverlay.xul
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
+
+<overlay id="jsConsoleOverlay"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<window id="JSConsoleWindow">
+
+#include browserMountPoints.inc
+
+</window>
+
+</overlay>
diff --git a/webbrowser/base/content/macBrowserOverlay.xul b/webbrowser/base/content/macBrowserOverlay.xul
new file mode 100644
index 0000000..b1ae838
--- /dev/null
+++ b/webbrowser/base/content/macBrowserOverlay.xul
@@ -0,0 +1,67 @@
+<?xml version="1.0"?>
+# -*- Mode: HTML -*-
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/content/places/places.css" type="text/css"?>
+
+<?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/places/placesOverlay.xul"?>
+
+# All DTD information is stored in a separate file so that it can be shared by
+# hiddenWindow.xul.
+#include browser-doctype.inc
+
+<overlay id="hidden-overlay"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+# All JS files which are not content (only) dependent that browser.xul
+# wishes to include *must* go into the global-scripts.inc file
+# so that they can be shared by this overlay.
+#include global-scripts.inc
+#ifdef MOZ_DEVTOOLS
+#include global-devtools-theme-scripts.inc
+#endif
+
+<script type="application/javascript">
+  function OpenBrowserWindowFromDockMenu(options) {
+    let win = OpenBrowserWindow(options);
+    win.addEventListener("load", function listener() {
+      win.removeEventListener("load", listener);
+      let dockSupport = Cc["@mozilla.org/widget/macdocksupport;1"]
+        .getService(Ci.nsIMacDockSupport);
+      dockSupport.activateApplication(true);
+    });
+
+    return win;
+  }
+
+  addEventListener("load",   function() { gBrowserInit.nonBrowserWindowStartup()  }, false);
+  addEventListener("unload", function() { gBrowserInit.nonBrowserWindowShutdown() }, false);
+</script>
+
+# All sets except for popupsets (commands, keys, stringbundles and broadcasters) *must* go into the 
+# browser-sets.inc file for sharing with hiddenWindow.xul.
+#include browser-sets.inc
+
+# The entire main menubar is placed into browser-menubar.inc, so that it can be shared by 
+# hiddenWindow.xul.
+#include browser-menubar.inc
+
+<!-- Dock menu -->
+<popupset>
+  <menupopup id="menu_mac_dockmenu">
+    <!-- The command cannot be cmd_newNavigator because we need to activate
+         the application. -->
+    <menuitem label="&newNavigatorCmd.label;" oncommand="OpenBrowserWindowFromDockMenu();"
+              id="macDockMenuNewWindow" />
+    <menuitem label="&newPrivateWindow.label;" oncommand="OpenBrowserWindowFromDockMenu({private: true});" />
+  </menupopup>
+</popupset>
+
+</overlay>
diff --git a/webbrowser/base/content/nsContextMenu.js b/webbrowser/base/content/nsContextMenu.js
new file mode 100644
index 0000000..916dd26
--- /dev/null
+++ b/webbrowser/base/content/nsContextMenu.js
@@ -0,0 +1,1603 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
+
+var gContextMenuContentData = null;
+
+function nsContextMenu(aXulMenu, aIsShift) {
+  this.shouldDisplay = true;
+  this.initMenu(aXulMenu, aIsShift);
+}
+
+// Prototype for nsContextMenu "class."
+nsContextMenu.prototype = {
+  initMenu: function CM_initMenu(aXulMenu, aIsShift) {
+    // Get contextual info.
+    this.setTarget(document.popupNode, document.popupRangeParent,
+                   document.popupRangeOffset);
+    if (!this.shouldDisplay)
+      return;
+
+    this.hasPageMenu = false;
+    if (!aIsShift) {
+      this.hasPageMenu = PageMenu.maybeBuildAndAttachMenu(this.target,
+                                                          aXulMenu);
+    }
+
+    this.isFrameImage = document.getElementById("isFrameImage");
+    this.ellipsis = "\u2026";
+    try {
+      this.ellipsis = gPrefService.getComplexValue("intl.ellipsis",
+                                                   Ci.nsIPrefLocalizedString).data;
+    } catch (e) { }
+
+    this.isContentSelected = this.isContentSelection();
+    this.onPlainTextLink = false;
+
+    // Initialize (disable/remove) menu items.
+    this.initItems();
+  },
+
+  hiding: function CM_hiding() {
+    gContextMenuContentData = null;
+    InlineSpellCheckerUI.clearSuggestionsFromMenu();
+    InlineSpellCheckerUI.clearDictionaryListFromMenu();
+    InlineSpellCheckerUI.uninit();
+  },
+
+  initItems: function CM_initItems() {
+    this.initPageMenuSeparator();
+    this.initOpenItems();
+    this.initNavigationItems();
+    this.initViewItems();
+    this.initMiscItems();
+    this.initSpellingItems();
+    this.initSaveItems();
+    this.initClipboardItems();
+    this.initMediaPlayerItems();
+    this.initLeaveDOMFullScreenItems();
+    this.initClickToPlayItems();
+  },
+
+  initPageMenuSeparator: function CM_initPageMenuSeparator() {
+    this.showItem("page-menu-separator", this.hasPageMenu);
+  },
+
+  initOpenItems: function CM_initOpenItems() {
+    var isMailtoInternal = false;
+    if (this.onMailtoLink) {
+      var mailtoHandler = Cc["@mozilla.org/uriloader/external-protocol-service;1"].
+                          getService(Ci.nsIExternalProtocolService).
+                          getProtocolHandlerInfo("mailto");
+      isMailtoInternal = (!mailtoHandler.alwaysAskBeforeHandling &&
+                          mailtoHandler.preferredAction == Ci.nsIHandlerInfo.useHelperApp &&
+                          (mailtoHandler.preferredApplicationHandler instanceof Ci.nsIWebHandlerApp));
+    }
+
+    // Time to do some bad things and see if we've highlighted a URL that
+    // isn't actually linked.
+    if (this.isTextSelected && !this.onLink) {
+      // Ok, we have some text, let's figure out if it looks like a URL.
+      let selection =  document.commandDispatcher.focusedWindow
+                               .getSelection();
+      let linkText = selection.toString().trim();
+      let uri;
+      if (/^(?:https?|ftp):/i.test(linkText)) {
+        try {
+          uri = makeURI(linkText);
+        } catch (ex) {}
+      }
+      // Check if this could be a valid url, just missing the protocol.
+      else if (/^[-a-z\d\.]+\.[-a-z\d]{2,}[-_=~:#%&\?\w\/\.]*$/i.test(linkText)) {
+        let uriFixup = Cc["@mozilla.org/docshell/urifixup;1"]
+                         .getService(Ci.nsIURIFixup);
+        try {
+          uri = uriFixup.createFixupURI(linkText, uriFixup.FIXUP_FLAG_NONE);
+        } catch (ex) {}
+      }
+
+      if (uri && uri.host) {
+        this.linkURI = uri;
+        this.linkURL = this.linkURI.spec;
+        this.onPlainTextLink = true;
+      }
+    }
+
+    var shouldShow = this.onSaveableLink || isMailtoInternal || this.onPlainTextLink;
+    var isWindowPrivate = PrivateBrowsingUtils.isWindowPrivate(window);
+    this.showItem("context-openlink", shouldShow && !isWindowPrivate);
+    this.showItem("context-openlinkprivate", shouldShow);
+    this.showItem("context-openlinkintab", shouldShow);
+    this.showItem("context-openlinkincurrent", shouldShow);
+    this.showItem("context-sep-open", shouldShow);
+  },
+
+  initNavigationItems: function CM_initNavigationItems() {
+    var shouldShow = !(this.isContentSelected || this.onLink || this.onImage ||
+                       this.onCanvas || this.onVideo || this.onAudio ||
+                       this.onTextInput);
+    this.showItem("context-back", shouldShow);
+    this.showItem("context-forward", shouldShow);
+
+    let stopped = XULBrowserWindow.stopCommand.getAttribute("disabled") == "true";
+
+    let stopReloadItem = "";
+    if (shouldShow) {
+      stopReloadItem = stopped ? "reload" : "stop";
+    }
+
+    this.showItem("context-reload", stopReloadItem == "reload");
+    this.showItem("context-stop", stopReloadItem == "stop");
+    this.showItem("context-sep-stop", !!stopReloadItem);
+
+    // XXX: Stop is determined in browser.js; the canStop broadcaster is broken
+    //this.setItemAttrFromNode( "context-stop", "disabled", "canStop" );
+  },
+
+  initLeaveDOMFullScreenItems: function CM_initLeaveFullScreenItem() {
+    // only show the option if the user is in DOM fullscreen
+    var shouldShow = (this.target.ownerDocument.mozFullScreenElement != null);
+    this.showItem("context-leave-dom-fullscreen", shouldShow);
+
+    // Explicitly show if in DOM fullscreen, but do not hide it has already been shown
+    if (shouldShow)
+        this.showItem("context-media-sep-commands", true);
+  },
+
+  initSaveItems: function CM_initSaveItems() {
+    var shouldShow = !(this.onTextInput || this.onLink ||
+                       this.isContentSelected || this.onImage ||
+                       this.onCanvas || this.onVideo || this.onAudio);
+    this.showItem("context-savepage", shouldShow);
+    this.showItem("context-sendpage", shouldShow);
+
+    // Save+Send link depends on whether we're in a link, or selected text matches valid URL pattern.
+    this.showItem("context-savelink", this.onSaveableLink || this.onPlainTextLink);
+    this.showItem("context-sendlink", this.onSaveableLink || this.onPlainTextLink);
+
+    // Save image depends on having loaded its content, video and audio don't.
+    this.showItem("context-saveimage", this.onLoadedImage || this.onCanvas);
+    this.showItem("context-savevideo", this.onVideo);
+    this.showItem("context-saveaudio", this.onAudio);
+    this.showItem("context-video-saveimage", this.onVideo);
+    this.setItemAttr("context-savevideo", "disabled", !this.mediaURL);
+    this.setItemAttr("context-saveaudio", "disabled", !this.mediaURL);
+    // Send media URL (but not for canvas, since it's a big data: URL)
+    this.showItem("context-sendimage", this.onImage);
+    this.showItem("context-sendvideo", this.onVideo);
+    this.showItem("context-sendaudio", this.onAudio);
+    this.setItemAttr("context-sendvideo", "disabled", !this.mediaURL);
+    this.setItemAttr("context-sendaudio", "disabled", !this.mediaURL);
+  },
+
+  initViewItems: function CM_initViewItems() {
+    // View source is always OK, unless in directory listing.
+    this.showItem("context-viewpartialsource-selection",
+                  this.isContentSelected);
+    this.showItem("context-viewpartialsource-mathml",
+                  this.onMathML && !this.isContentSelected);
+
+    var shouldShow = !(this.isContentSelected ||
+                       this.onImage || this.onCanvas ||
+                       this.onVideo || this.onAudio ||
+                       this.onLink || this.onTextInput);
+    this.showItem("context-viewsource", shouldShow);
+    this.showItem("context-viewinfo", shouldShow);
+#ifdef MOZ_DEVTOOLS
+    var showInspect = gPrefService.getBoolPref("devtools.inspector.enabled");
+    this.showItem("inspect-separator", showInspect);
+    this.showItem("context-inspect", showInspect);
+#endif
+
+    this.showItem("context-sep-viewsource", shouldShow);
+
+    // Set as Desktop background depends on whether an image was clicked on,
+    // and only works if we have a shell service.
+    var haveSetDesktopBackground = false;
+#ifdef HAVE_SHELL_SERVICE
+    // Only enable Set as Desktop Background if we can get the shell service.
+    var shell = getShellService();
+    if (shell)
+      haveSetDesktopBackground = shell.canSetDesktopBackground;
+#endif
+    this.showItem("context-setDesktopBackground",
+                  haveSetDesktopBackground && this.onLoadedImage);
+
+    if (haveSetDesktopBackground && this.onLoadedImage) {
+      document.getElementById("context-setDesktopBackground")
+              .disabled = this.disableSetDesktopBackground();
+    }
+
+    // Reload image depends on an image that's not fully loaded
+    this.showItem("context-reloadimage", (this.onImage && !this.onCompletedImage));
+
+    // View image depends on having an image that's not standalone
+    // (or is in a frame), or a canvas.
+    this.showItem("context-viewimage", (this.onImage &&
+                  (!this.inSyntheticDoc || this.inFrame)) || this.onCanvas);
+
+    // View video depends on not having a standalone video.
+    this.showItem("context-viewvideo", this.onVideo && (!this.inSyntheticDoc || this.inFrame));
+    this.setItemAttr("context-viewvideo",  "disabled", !this.mediaURL);
+
+    // View background image depends on whether there is one, but don't make
+    // background images of a stand-alone media document available.
+    this.showItem("context-viewbgimage", shouldShow &&
+                                         !this._hasMultipleBGImages &&
+                                         !this.inSyntheticDoc);
+    this.showItem("context-sep-viewbgimage", shouldShow &&
+                                             !this._hasMultipleBGImages &&
+                                             !this.inSyntheticDoc);
+    document.getElementById("context-viewbgimage")
+            .disabled = !this.hasBGImage;
+
+    this.showItem("context-viewimageinfo", this.onImage);
+  },
+
+  initMiscItems: function CM_initMiscItems() {
+    // Use "Bookmark This Link" if on a link.
+    this.showItem("context-bookmarkpage",
+                  !(this.isContentSelected || this.onTextInput || this.onLink ||
+                    this.onImage || this.onVideo || this.onAudio));
+    this.showItem("context-bookmarklink", (this.onLink && !this.onMailtoLink) ||
+                                          this.onPlainTextLink);
+    this.showItem("context-keywordfield",
+                  this.onTextInput && this.onKeywordField);
+    this.showItem("frame", this.inFrame);
+
+    let showSearchSelect = (this.isTextSelected || this.onLink) && !this.onImage;
+    this.showItem("context-searchselect", showSearchSelect);
+    if (showSearchSelect) {
+      this.formatSearchContextItem();
+    }
+
+    // srcdoc cannot be opened separately due to concerns about web
+    // content with about:srcdoc in location bar masquerading as trusted
+    // chrome/addon content.
+    // No need to also test for this.inFrame as this is checked in the parent
+    // submenu.
+    this.showItem("context-showonlythisframe", !this.inSrcdocFrame);
+    this.showItem("context-openframeintab", !this.inSrcdocFrame);
+    this.showItem("context-openframe", !this.inSrcdocFrame);
+    this.showItem("context-bookmarkframe", !this.inSrcdocFrame);
+    this.showItem("open-frame-sep", !this.inSrcdocFrame);
+
+    this.showItem("frame-sep", this.inFrame && this.isTextSelected);
+
+    // Hide menu entries for images, show otherwise
+    if (this.inFrame) {
+      if (BrowserUtils.mimeTypeIsTextBased(this.target.ownerDocument.contentType))
+        this.isFrameImage.removeAttribute('hidden');
+      else
+        this.isFrameImage.setAttribute('hidden', 'true');
+    }
+
+    // BiDi UI
+    this.showItem("context-sep-bidi", top.gBidiUI);
+    this.showItem("context-bidi-text-direction-toggle",
+                  this.onTextInput && top.gBidiUI);
+    this.showItem("context-bidi-page-direction-toggle",
+                  !this.onTextInput && top.gBidiUI);
+  },
+
+  initSpellingItems: function() {
+    var canSpell = InlineSpellCheckerUI.canSpellCheck && this.canSpellCheck;
+    var onMisspelling = InlineSpellCheckerUI.overMisspelling;
+    var showUndo = canSpell && InlineSpellCheckerUI.canUndo();
+    this.showItem("spell-check-enabled", canSpell);
+    this.showItem("spell-separator", canSpell || this.onEditableArea);
+    document.getElementById("spell-check-enabled")
+            .setAttribute("checked", canSpell && InlineSpellCheckerUI.enabled);
+
+    this.showItem("spell-add-to-dictionary", onMisspelling);
+    this.showItem("spell-undo-add-to-dictionary", showUndo);
+
+    // suggestion list
+    this.showItem("spell-suggestions-separator", onMisspelling || showUndo);
+    if (onMisspelling) {
+      var suggestionsSeparator =
+        document.getElementById("spell-add-to-dictionary");
+      var numsug =
+        InlineSpellCheckerUI.addSuggestionsToMenu(suggestionsSeparator.parentNode,
+                                                  suggestionsSeparator, 5);
+      this.showItem("spell-no-suggestions", numsug == 0);
+    }
+    else
+      this.showItem("spell-no-suggestions", false);
+
+    // dictionary list
+    this.showItem("spell-dictionaries", canSpell && InlineSpellCheckerUI.enabled);
+    if (canSpell) {
+      var dictMenu = document.getElementById("spell-dictionaries-menu");
+      var dictSep = document.getElementById("spell-language-separator");
+      InlineSpellCheckerUI.addDictionaryListToMenu(dictMenu, dictSep);
+      this.showItem("spell-add-dictionaries-main", false);
+    }
+    else if (this.onEditableArea) {
+      // when there is no spellchecker but we might be able to spellcheck
+      // add the add to dictionaries item. This will ensure that people
+      // with no dictionaries will be able to download them
+      this.showItem("spell-add-dictionaries-main", true);
+    }
+    else
+      this.showItem("spell-add-dictionaries-main", false);
+  },
+
+  initClipboardItems: function() {
+    // Copy depends on whether there is selected text.
+    // Enabling this context menu item is now done through the global
+    // command updating system
+    // this.setItemAttr( "context-copy", "disabled", !this.isTextSelected() );
+    goUpdateGlobalEditMenuItems();
+
+    this.showItem("context-undo", this.onTextInput);
+    this.showItem("context-sep-undo", this.onTextInput);
+    this.showItem("context-cut", this.onTextInput);
+    this.showItem("context-copy",
+                  this.isContentSelected || this.onTextInput);
+    this.showItem("context-paste", this.onTextInput);
+    this.showItem("context-delete", this.onTextInput);
+    this.showItem("context-sep-paste", this.onTextInput);
+    this.showItem("context-selectall", !(this.onLink || this.onImage ||
+                                         this.onVideo || this.onAudio ||
+                                         this.inSyntheticDoc) ||
+                                       this.isDesignMode);
+    this.showItem("context-sep-selectall", this.isContentSelected );
+
+    // XXX dr
+    // ------
+    // nsDocumentViewer.cpp has code to determine whether we're
+    // on a link or an image. we really ought to be using that...
+
+    // Copy email link depends on whether we're on an email link.
+    this.showItem("context-copyemail", this.onMailtoLink);
+
+    // Copy link location depends on whether we're on a non-mailto link.
+    this.showItem("context-copylink", this.onLink && !this.onMailtoLink);
+    this.showItem("context-sep-copylink", this.onLink &&
+                  (this.onImage || this.onVideo || this.onAudio));
+
+#ifdef CONTEXT_COPY_IMAGE_CONTENTS
+    // Copy image contents depends on whether we're on an image.
+    this.showItem("context-copyimage-contents", this.onImage);
+#endif
+    // Copy image location depends on whether we're on an image.
+    this.showItem("context-copyimage", this.onImage);
+    this.showItem("context-copyvideourl", this.onVideo);
+    this.showItem("context-copyaudiourl", this.onAudio);
+    this.setItemAttr("context-copyvideourl",  "disabled", !this.mediaURL);
+    this.setItemAttr("context-copyaudiourl",  "disabled", !this.mediaURL);
+    this.showItem("context-sep-copyimage", this.onImage ||
+                  this.onVideo || this.onAudio);
+  },
+
+  initMediaPlayerItems: function() {
+    var onMedia = (this.onVideo || this.onAudio);
+    // Several mutually exclusive items... play/pause, mute/unmute, show/hide
+    this.showItem("context-media-play",  onMedia && (this.target.paused || this.target.ended));
+    this.showItem("context-media-pause", onMedia && !this.target.paused && !this.target.ended);
+    this.showItem("context-media-mute",   onMedia && !this.target.muted);
+    this.showItem("context-media-unmute", onMedia && this.target.muted);
+    this.showItem("context-media-playbackrate", onMedia);
+    this.showItem("context-media-loop", onMedia);
+    this.showItem("context-media-showcontrols", onMedia && !this.target.controls);
+    this.showItem("context-media-hidecontrols", onMedia && this.target.controls);
+    this.showItem("context-video-fullscreen", this.onVideo && this.target.ownerDocument.mozFullScreenElement == null);
+    var statsShowing = this.onVideo && XPCNativeWrapper.unwrap(this.target).mozMediaStatisticsShowing;
+    this.showItem("context-video-showstats", this.onVideo && this.target.controls && !statsShowing);
+    this.showItem("context-video-hidestats", this.onVideo && this.target.controls && statsShowing);
+
+    // Disable them when there isn't a valid media source loaded.
+    if (onMedia) {
+      this.setItemAttr("context-media-playbackrate-050x", "checked", this.target.playbackRate == 0.5);
+      this.setItemAttr("context-media-playbackrate-100x", "checked", this.target.playbackRate == 1.0);
+      this.setItemAttr("context-media-playbackrate-150x", "checked", this.target.playbackRate == 1.5);
+      this.setItemAttr("context-media-playbackrate-200x", "checked", this.target.playbackRate == 2.0);
+      this.setItemAttr("context-media-loop", "checked", this.target.loop);
+      var hasError = this.target.error != null ||
+                     this.target.networkState == this.target.NETWORK_NO_SOURCE;
+      this.setItemAttr("context-media-play",  "disabled", hasError);
+      this.setItemAttr("context-media-pause", "disabled", hasError);
+      this.setItemAttr("context-media-mute",   "disabled", hasError);
+      this.setItemAttr("context-media-unmute", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-050x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-100x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-150x", "disabled", hasError);
+      this.setItemAttr("context-media-playbackrate-200x", "disabled", hasError);
+      this.setItemAttr("context-media-showcontrols", "disabled", hasError);
+      this.setItemAttr("context-media-hidecontrols", "disabled", hasError);
+      if (this.onVideo) {
+        let canSaveSnapshot = this.target.readyState >= this.target.HAVE_CURRENT_DATA;
+        this.setItemAttr("context-video-saveimage",  "disabled", !canSaveSnapshot);
+        this.setItemAttr("context-video-fullscreen", "disabled", hasError);
+        this.setItemAttr("context-video-showstats", "disabled", hasError);
+        this.setItemAttr("context-video-hidestats", "disabled", hasError);
+      }
+    }
+    this.showItem("context-media-sep-commands",  onMedia);
+  },
+
+  initClickToPlayItems: function() {
+    this.showItem("context-ctp-play", this.onCTPPlugin);
+    this.showItem("context-ctp-hide", this.onCTPPlugin);
+    this.showItem("context-sep-ctp", this.onCTPPlugin);
+  },
+
+  inspectNode: function CM_inspectNode() {
+    let {devtools} = Cu.import("resource://devtools/shared/Loader.jsm", {});
+    let gBrowser = this.browser.ownerDocument.defaultView.gBrowser;
+    let target = devtools.TargetFactory.forTab(gBrowser.selectedTab);
+
+    return gDevTools.showToolbox(target, "inspector").then(function(toolbox) {
+      let inspector = toolbox.getCurrentPanel();
+
+      this.browser.messageManager.sendAsyncMessage("debug:inspect", {}, {node: this.target});
+      inspector.walker.findInspectingNode().then(nodeFront => {
+        inspector.selection.setNodeFront(nodeFront, "browser-context-menu");
+      });
+    }.bind(this));
+  },
+
+  // Set various context menu attributes based on the state of the world.
+  setTarget: function (aNode, aRangeParent, aRangeOffset) {
+    const xulNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+    if (aNode.namespaceURI == xulNS ||
+        aNode.nodeType == Node.DOCUMENT_NODE ||
+        this.isDisabledForEvents(aNode)) {
+      this.shouldDisplay = false;
+      return;
+    }
+
+    // Initialize contextual info.
+    this.onImage           = false;
+    this.onLoadedImage     = false;
+    this.onCompletedImage  = false;
+    this.onCanvas          = false;
+    this.onVideo           = false;
+    this.onAudio           = false;
+    this.onTextInput       = false;
+    this.onKeywordField    = false;
+    this.mediaURL          = "";
+    this.onLink            = false;
+    this.onMailtoLink      = false;
+    this.onSaveableLink    = false;
+    this.link              = null;
+    this.linkURL           = "";
+    this.linkURI           = null;
+    this.linkProtocol      = "";
+    this.linkDownload      = "";
+    this.onMathML          = false;
+    this.inFrame           = false;
+    this.inSrcdocFrame     = false;
+    this.inSyntheticDoc    = false;
+    this.hasBGImage        = false;
+    this.bgImageURL        = "";
+    this.onEditableArea    = false;
+    this.isDesignMode      = false;
+    this.onCTPPlugin       = false;
+    this.canSpellCheck     = false;
+    this.textSelected      = getBrowserSelection();
+    this.isTextSelected    = this.textSelected.length != 0;
+
+    // Remember the node that was clicked.
+    this.target = aNode;
+
+    this.browser = this.target.ownerDocument.defaultView
+                                .QueryInterface(Ci.nsIInterfaceRequestor)
+                                .getInterface(Ci.nsIWebNavigation)
+                                .QueryInterface(Ci.nsIDocShell)
+                                .chromeEventHandler;
+
+    // Check if we are in a synthetic document (stand alone image, video, etc.).
+    this.inSyntheticDoc =  this.target.ownerDocument.mozSyntheticDocument;
+    // First, do checks for nodes that never have children.
+    if (this.target.nodeType == Node.ELEMENT_NODE) {
+      // See if the user clicked on an image.
+      if (this.target instanceof Ci.nsIImageLoadingContent &&
+          this.target.currentURI) {
+        this.onImage = true;
+
+        var request =
+          this.target.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
+        if (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE))
+          this.onLoadedImage = true;
+        if (request && (request.imageStatus & request.STATUS_LOAD_COMPLETE))
+          this.onCompletedImage = true;
+
+        this.mediaURL = this.target.currentURI.spec;
+      }
+      else if (this.target instanceof HTMLCanvasElement) {
+        this.onCanvas = true;
+      }
+      else if (this.target instanceof HTMLVideoElement) {
+        this.mediaURL = this.target.currentSrc || this.target.src;
+        // Firefox always creates a HTMLVideoElement when loading an ogg file
+        // directly. If the media is actually audio, be smarter and provide a
+        // context menu with audio operations.
+        if (this.target.readyState >= this.target.HAVE_METADATA &&
+            (this.target.videoWidth == 0 || this.target.videoHeight == 0)) {
+          this.onAudio = true;
+        } else {
+          this.onVideo = true;
+        }
+      }
+      else if (this.target instanceof HTMLAudioElement) {
+        this.onAudio = true;
+        this.mediaURL = this.target.currentSrc || this.target.src;
+      }
+      else if (this.target instanceof HTMLInputElement ) {
+        this.onTextInput = this.isTargetATextBox(this.target);
+        // Allow spellchecking UI on all text and search inputs.
+        if (this.onTextInput && ! this.target.readOnly &&
+            (this.target.type == "text" || this.target.type == "search")) {
+          this.onEditableArea = true;
+          InlineSpellCheckerUI.init(this.target.QueryInterface(Ci.nsIDOMNSEditableElement).editor);
+          InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
+        }
+        this.onKeywordField = this.isTargetAKeywordField(this.target);
+      }
+      else if (this.target instanceof HTMLTextAreaElement) {
+        this.onTextInput = true;
+        if (!this.target.readOnly) {
+          this.onEditableArea = true;
+          InlineSpellCheckerUI.init(this.target.QueryInterface(Ci.nsIDOMNSEditableElement).editor);
+          InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
+        }
+      }
+      else if (this.target instanceof HTMLHtmlElement) {
+        var bodyElt = this.target.ownerDocument.body;
+        if (bodyElt) {
+          let computedURL;
+          try {
+            computedURL = this.getComputedURL(bodyElt, "background-image");
+            this._hasMultipleBGImages = false;
+          } catch (e) {
+            this._hasMultipleBGImages = true;
+          }
+          if (computedURL) {
+            this.hasBGImage = true;
+            this.bgImageURL = makeURLAbsolute(bodyElt.baseURI,
+                                              computedURL);
+          }
+        }
+      }
+      else if ((this.target instanceof HTMLEmbedElement ||
+                this.target instanceof HTMLObjectElement ||
+                this.target instanceof HTMLAppletElement) &&
+               this.target.displayedType == HTMLObjectElement.TYPE_NULL &&
+               this.target.pluginFallbackType == HTMLObjectElement.PLUGIN_CLICK_TO_PLAY) {
+        this.onCTPPlugin = true;
+      }
+
+      this.canSpellCheck = this._isSpellCheckEnabled(this.target);
+    }
+    else if (this.target.nodeType == Node.TEXT_NODE) {
+      // For text nodes, look at the parent node to determine the spellcheck attribute.
+      this.canSpellCheck = this.target.parentNode &&
+                           this._isSpellCheckEnabled(this.target);
+    }
+
+    // Second, bubble out, looking for items of interest that can have childen.
+    // Always pick the innermost link, background image, etc.
+    const XMLNS = "http://www.w3.org/XML/1998/namespace";
+    var elem = this.target;
+    while (elem) {
+      if (elem.nodeType == Node.ELEMENT_NODE) {
+        // Link?
+        if (!this.onLink &&
+            // Be consistent with what hrefAndLinkNodeForClickEvent
+            // does in browser.js
+             ((elem instanceof HTMLAnchorElement && elem.href) ||
+              (elem instanceof HTMLAreaElement && elem.href) ||
+              elem instanceof HTMLLinkElement ||
+              elem.getAttributeNS("http://www.w3.org/1999/xlink", "type") == "simple")) {
+
+          // Target is a link or a descendant of a link.
+          this.onLink = true;
+
+          // Remember corresponding element.
+          this.link = elem;
+          this.linkURL = this.getLinkURL();
+          this.linkURI = this.getLinkURI();
+          this.linkProtocol = this.getLinkProtocol();
+          this.onMailtoLink = (this.linkProtocol == "mailto");
+          this.onSaveableLink = this.isLinkSaveable( this.link );
+          try {
+            if (elem.download) {
+              // Ignore download attribute on cross-origin links?
+              // This shoudn't be an issue because the download link presents
+              // the originating URL domain and protocol to help user understand
+              // from where file is downloaded and make right decision.
+              // If we decide we want this restriction:
+              // this.principal.checkMayLoad(this.linkURI, false, true);
+              this.linkDownload = elem.download;
+            }
+          }
+          catch (ex) {}          
+        }
+
+        // Background image?  Don't bother if we've already found a
+        // background image further down the hierarchy.  Otherwise,
+        // we look for the computed background-image style.
+        if (!this.hasBGImage &&
+            !this._hasMultipleBGImages) {
+          let bgImgUrl;
+          try {
+            bgImgUrl = this.getComputedURL(elem, "background-image");
+            this._hasMultipleBGImages = false;
+          } catch (e) {
+            this._hasMultipleBGImages = true;
+          }
+          if (bgImgUrl) {
+            this.hasBGImage = true;
+            this.bgImageURL = makeURLAbsolute(elem.baseURI,
+                                              bgImgUrl);
+          }
+        }
+      }
+
+      elem = elem.parentNode;
+    }
+
+    // See if the user clicked on MathML
+    const NS_MathML = "http://www.w3.org/1998/Math/MathML";
+    if ((this.target.nodeType == Node.TEXT_NODE &&
+         this.target.parentNode.namespaceURI == NS_MathML)
+         || (this.target.namespaceURI == NS_MathML))
+      this.onMathML = true;
+
+    // See if the user clicked in a frame.
+    var docDefaultView = this.target.ownerDocument.defaultView;
+    if (docDefaultView != docDefaultView.top) {
+      this.inFrame = true;
+
+      if (this.target.ownerDocument.isSrcdocDocument) {
+          this.inSrcdocFrame = true;
+      }
+    }
+
+    // if the document is editable, show context menu like in text inputs
+    if (!this.onEditableArea) {
+      var win = this.target.ownerDocument.defaultView;
+      if (win) {
+        var isEditable = false;
+        try {
+          var editingSession = win.QueryInterface(Ci.nsIInterfaceRequestor)
+                                  .getInterface(Ci.nsIWebNavigation)
+                                  .QueryInterface(Ci.nsIInterfaceRequestor)
+                                  .getInterface(Ci.nsIEditingSession);
+          if (editingSession.windowIsEditable(win) &&
+              this.getComputedStyle(this.target, "-moz-user-modify") == "read-write") {
+            isEditable = true;
+          }
+        }
+        catch(ex) {
+          // If someone built with composer disabled, we can't get an editing session.
+        }
+
+        if (isEditable) {
+          this.onTextInput       = true;
+          this.onKeywordField    = false;
+          this.onImage           = false;
+          this.onLoadedImage     = false;
+          this.onCompletedImage  = false;
+          this.onMathML          = false;
+          this.inFrame           = false;
+          this.inSrcdocFrame     = false;
+          this.hasBGImage        = false;
+          this.isDesignMode      = true;
+          this.onEditableArea = true;
+          InlineSpellCheckerUI.init(editingSession.getEditorForWindow(win));
+          var canSpell = InlineSpellCheckerUI.canSpellCheck && this.canSpellCheck;
+          InlineSpellCheckerUI.initFromEvent(aRangeParent, aRangeOffset);
+          this.showItem("spell-check-enabled", canSpell);
+          this.showItem("spell-separator", canSpell);
+        }
+      }
+    }
+  },
+
+  // Returns the computed style attribute for the given element.
+  getComputedStyle: function(aElem, aProp) {
+    return aElem.ownerDocument
+                .defaultView
+                .getComputedStyle(aElem, "").getPropertyValue(aProp);
+  },
+
+  // Returns a "url"-type computed style attribute value, with the url() stripped.
+  getComputedURL: function(aElem, aProp) {
+    var url = aElem.ownerDocument
+                   .defaultView.getComputedStyle(aElem, "")
+                   .getPropertyCSSValue(aProp);
+    if (url instanceof CSSValueList) {
+      if (url.length != 1)
+        throw "found multiple URLs";
+      url = url[0];
+    }
+    return url.primitiveType == CSSPrimitiveValue.CSS_URI ?
+           url.getStringValue() : null;
+  },
+
+  // Returns true if clicked-on link targets a resource that can be saved.
+  isLinkSaveable: function(aLink) {
+    // We don't do the Right Thing for news/snews yet, so turn them off
+    // until we do.
+    return this.linkProtocol && !(
+             this.linkProtocol == "mailto"     ||
+             this.linkProtocol == "javascript" ||
+             this.linkProtocol == "news"       ||
+             this.linkProtocol == "snews"      );
+  },
+
+  _isSpellCheckEnabled: function(aNode) {
+    // We can always force-enable spellchecking on textboxes
+    if (this.isTargetATextBox(aNode)) {
+      return true;
+    }
+    // We can never spell check something which is not content editable
+    var editable = aNode.isContentEditable;
+    if (!editable && aNode.ownerDocument) {
+      editable = aNode.ownerDocument.designMode == "on";
+    }
+    if (!editable) {
+      return false;
+    }
+    // Otherwise make sure that nothing in the parent chain disables spellchecking
+    return aNode.spellcheck;
+  },
+
+  // Open linked-to URL in a new window.
+  openLink : function () {
+    var doc = this.target.ownerDocument;
+    urlSecurityCheck(this.linkURL, doc.nodePrincipal);
+    openLinkIn(this.linkURL, "window",
+               { charset: doc.characterSet,
+                 referrerURI: doc.documentURIObject,
+                 referrerPolicy: doc.referrerPolicy,
+                 originPrincipal: doc.nodePrincipal,
+                 triggeringPrincipal: doc.nodePrincipal });
+  },
+
+  // Open linked-to URL in a new private window.
+  openLinkInPrivateWindow : function () {
+    var doc = this.target.ownerDocument;
+    urlSecurityCheck(this.linkURL, doc.nodePrincipal);
+    openLinkIn(this.linkURL, "window",
+               { charset: doc.characterSet,
+                 referrerURI: doc.documentURIObject,
+                 referrerPolicy: doc.referrerPolicy,
+                 originPrincipal: doc.nodePrincipal,
+                 triggeringPrincipal: doc.nodePrincipal,
+                 private: true });
+  },
+
+  // Open linked-to URL in a new tab.
+  openLinkInTab: function() {
+    var doc = this.target.ownerDocument;
+    urlSecurityCheck(this.linkURL, doc.nodePrincipal);
+    openLinkIn(this.linkURL, "tab",
+               { charset: doc.characterSet,
+                 referrerURI: doc.documentURIObject,
+                 referrerPolicy: doc.referrerPolicy,
+                 originPrincipal: doc.nodePrincipal,
+                 triggeringPrincipal: doc.nodePrincipal });
+  },
+
+  // open URL in current tab
+  openLinkInCurrent: function() {
+    var doc = this.target.ownerDocument;
+    urlSecurityCheck(this.linkURL, doc.nodePrincipal);
+    openLinkIn(this.linkURL, "current",
+               { charset: doc.characterSet,
+                 referrerURI: doc.documentURIObject,
+                 originPrincipal: doc.nodePrincipal,
+                 triggeringPrincipal: doc.nodePrincipal });
+  },
+
+  // Open frame in a new tab.
+  openFrameInTab: function() {
+    var doc = this.target.ownerDocument;
+    var frameURL = doc.location.href;
+    var referrer = doc.referrer;
+    openLinkIn(frameURL, "tab",
+               { charset: doc.characterSet,
+                 referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  // Reload clicked-in frame.
+  reloadFrame: function() {
+    this.target.ownerDocument.location.reload();
+  },
+
+  // Open clicked-in frame in its own window.
+  openFrame: function() {
+    var doc = this.target.ownerDocument;
+    var frameURL = doc.location.href;
+    var referrer = doc.referrer;
+    openLinkIn(frameURL, "window",
+               { charset: doc.characterSet,
+                 referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  // Open clicked-in frame in the same window.
+  showOnlyThisFrame: function() {
+    var doc = this.target.ownerDocument;
+    var frameURL = doc.location.href;
+
+    urlSecurityCheck(frameURL, this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    var referrer = doc.referrer;
+    openUILinkIn(frameURL, "current", { disallowInheritPrincipal: true,
+                                        referrerURI: referrer ? makeURI(referrer) : null });
+  },
+
+  reload: function(event) {
+    BrowserReloadOrDuplicate(event);
+  },
+
+  // View Partial Source
+  viewPartialSource: function(aContext) {
+    let target = aContext == "mathml" ? this.target : null;
+    top.gViewSourceUtils.viewPartialSourceInBrowser(gBrowser.selectedBrowser, target);
+  },
+
+  // Open new "view source" window with the frame's URL.
+  viewFrameSource: function() {
+    BrowserViewSourceOfDocument(this.target.ownerDocument);
+  },
+
+  viewInfo: function() {
+    BrowserPageInfo(this.target.ownerDocument.defaultView.top.document);
+  },
+
+  viewImageInfo: function() {
+    BrowserPageInfo(this.target.ownerDocument.defaultView.top.document,
+                    "mediaTab", this.target);
+  },
+
+  viewFrameInfo: function() {
+    BrowserPageInfo(this.target.ownerDocument);
+  },
+
+  reloadImage: function(e) {
+    urlSecurityCheck(this.mediaURL,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+
+    if (this.target instanceof Ci.nsIImageLoadingContent)
+      this.target.forceReload();
+  },
+
+  // Change current window to the URL of the image, video, or audio.
+  viewMedia: function(e) {
+    var viewURL;
+    var doc = this.target.ownerDocument;
+    if (this.onCanvas) {
+      var target = this.target;
+      var win = doc.defaultView;
+      if (!win) {
+        Components.utils.reportError(
+            "View Image (on the <canvas> element):\n" +
+            "This feature cannot be used, because it hasn't found " + 
+            "an appropriate window.");
+      } else {
+        new Promise.resolve({then: function (resolve) {
+          target.toBlob((blob) => {
+            resolve(win.URL.createObjectURL(blob));
+          })
+        }}).then(function (blobURL) {
+          openUILink(blobURL, e, { disallowInheritPrincipal: true,
+                                   referrerURI: doc.documentURIObject });
+        }, Components.utils.reportError);
+      }
+    } else {
+      viewURL = this.mediaURL;
+      urlSecurityCheck(viewURL,
+                       this.browser.contentPrincipal,
+                       Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+      let doc = this.target.ownerDocument;
+      openUILink(viewURL, e, { disallowInheritPrincipal: true,
+                               referrerURI: doc.documentURIObject,
+                               forceAllowDataURI: true });
+    }
+  },
+
+  saveVideoFrameAsImage: function () {
+    let referrerURI = document.documentURIObject;
+    let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(this.browser);
+
+    urlSecurityCheck(this.mediaURL, this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    let name = "";
+    try {
+      let uri = makeURI(this.mediaURL);
+      let url = uri.QueryInterface(Ci.nsIURL);
+      if (url.fileBaseName)
+        name = decodeURI(url.fileBaseName) + ".jpg";
+    } catch (e) { }
+    if (!name)
+      name = "snapshot.jpg";
+    var video = this.target;
+    var canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+    canvas.width = video.videoWidth;
+    canvas.height = video.videoHeight;
+    var ctxDraw = canvas.getContext("2d");
+    ctxDraw.drawImage(video, 0, 0);
+    saveImageURL(canvas.toDataURL("image/jpeg", ""), name, "SaveImageTitle",
+                 true, false, referrerURI, null, null, null,
+                 isPrivate);
+  },
+
+  fullScreenVideo: function () {
+    let video = this.target;
+    if (document.mozFullScreenEnabled)
+      video.mozRequestFullScreen();
+  },
+
+  leaveDOMFullScreen: function() {
+    document.mozCancelFullScreen();
+  },
+
+  // Change current window to the URL of the background image.
+  viewBGImage: function(e) {
+    urlSecurityCheck(this.bgImageURL,
+                     this.browser.contentPrincipal,
+                     Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
+    var doc = this.target.ownerDocument;
+    openUILink(this.bgImageURL, e, { disallowInheritPrincipal: true,
+                                     referrerURI: doc.documentURIObject });
+  },
+
+  disableSetDesktopBackground: function() {
+    // Disable the Set as Desktop Background menu item if we're still trying
+    // to load the image or the load failed.
+    if (!(this.target instanceof Ci.nsIImageLoadingContent))
+      return true;
+
+    if (("complete" in this.target) && !this.target.complete)
+      return true;
+
+    if (this.target.currentURI.schemeIs("javascript"))
+      return true;
+
+    var request = this.target
+                      .QueryInterface(Ci.nsIImageLoadingContent)
+                      .getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
+    if (!request)
+      return true;
+
+    return false;
+  },
+
+  setDesktopBackground: function() {
+    // Paranoia: check disableSetDesktopBackground again, in case the
+    // image changed since the context menu was initiated.
+    if (this.disableSetDesktopBackground())
+      return;
+
+    urlSecurityCheck(this.target.currentURI.spec,
+                     this.target.ownerDocument.nodePrincipal);
+
+    // Confirm since it's annoying if you hit this accidentally.
+    const kDesktopBackgroundURL = 
+                  "chrome://browser/content/setDesktopBackground.xul";
+#ifdef XP_MACOSX
+    // On Mac, the Set Desktop Background window is not modal.
+    // Don't open more than one Set Desktop Background window.
+    var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
+                       .getService(Components.interfaces.nsIWindowMediator);
+    var dbWin = wm.getMostRecentWindow("Shell:SetDesktopBackground");
+    if (dbWin) {
+      dbWin.gSetBackground.init(this.target);
+      dbWin.focus();
+    }
+    else {
+      openDialog(kDesktopBackgroundURL, "",
+                 "centerscreen,chrome,dialog=no,dependent,resizable=no",
+                 this.target);
+    }
+#else
+    // On non-Mac platforms, the Set Wallpaper dialog is modal.
+    openDialog(kDesktopBackgroundURL, "",
+               "centerscreen,chrome,dialog,modal,dependent",
+               this.target);
+#endif
+  },
+
+  // Save URL of clicked-on frame.
+  saveFrame: function () {
+    saveDocument(this.target.ownerDocument);
+  },
+
+  // Helper function to wait for appropriate MIME-type headers and
+  // then prompt the user with a file picker
+  saveHelper: function(linkURL, linkText, dialogTitle, bypassCache, doc,
+                       linkDownload) {
+    // canonical def in nsURILoader.h
+    const NS_ERROR_SAVE_LINK_AS_TIMEOUT = 0x805d0020;
+
+    // an object to proxy the data through to
+    // nsIExternalHelperAppService.doContent, which will wait for the
+    // appropriate MIME-type headers and then prompt the user with a
+    // file picker
+    function saveAsListener() {}
+    saveAsListener.prototype = {
+      extListener: null, 
+
+      onStartRequest: function saveLinkAs_onStartRequest(aRequest, aContext) {
+
+        // if the timer fired, the error status will have been caused by that,
+        // and we'll be restarting in onStopRequest, so no reason to notify
+        // the user
+        if (aRequest.status == NS_ERROR_SAVE_LINK_AS_TIMEOUT)
+          return;
+
+        timer.cancel();
+
+        // some other error occured; notify the user...
+        if (!Components.isSuccessCode(aRequest.status)) {
+          try {
+            const sbs = Cc["@mozilla.org/intl/stringbundle;1"].
+                        getService(Ci.nsIStringBundleService);
+            const bundle = sbs.createBundle(
+                    "chrome://mozapps/locale/downloads/downloads.properties");
+
+            const title = bundle.GetStringFromName("downloadErrorAlertTitle");
+            const msg = bundle.GetStringFromName("downloadErrorGeneric");
+
+            const promptSvc = Cc["@mozilla.org/embedcomp/prompt-service;1"].
+                              getService(Ci.nsIPromptService);
+            promptSvc.alert(doc.defaultView, title, msg);
+          } catch (ex) {}
+          return;
+        }
+
+        var extHelperAppSvc = 
+          Cc["@mozilla.org/uriloader/external-helper-app-service;1"].
+          getService(Ci.nsIExternalHelperAppService);
+        var channel = aRequest.QueryInterface(Ci.nsIChannel);
+        this.extListener = 
+          extHelperAppSvc.doContent(channel.contentType, aRequest, 
+                                    doc.defaultView, true);
+        this.extListener.onStartRequest(aRequest, aContext);
+      }, 
+
+      onStopRequest: function saveLinkAs_onStopRequest(aRequest, aContext, 
+                                                       aStatusCode) {
+        if (aStatusCode == NS_ERROR_SAVE_LINK_AS_TIMEOUT) {
+          // do it the old fashioned way, which will pick the best filename
+          // it can without waiting.
+          saveURL(linkURL, linkText, dialogTitle, bypassCache, false, doc.documentURIObject, doc);
+        }
+        if (this.extListener)
+          this.extListener.onStopRequest(aRequest, aContext, aStatusCode);
+      },
+
+      onDataAvailable: function saveLinkAs_onDataAvailable(aRequest, aContext,
+                                                           aInputStream,
+                                                           aOffset, aCount) {
+        this.extListener.onDataAvailable(aRequest, aContext, aInputStream,
+                                         aOffset, aCount);
+      }
+    }
+
+    function callbacks() {}
+    callbacks.prototype = {
+      getInterface: function sLA_callbacks_getInterface(aIID) {
+        if (aIID.equals(Ci.nsIAuthPrompt) || aIID.equals(Ci.nsIAuthPrompt2)) {
+          // If the channel demands authentication prompt, we must cancel it
+          // because the save-as-timer would expire and cancel the channel
+          // before we get credentials from user.  Both authentication dialog
+          // and save as dialog would appear on the screen as we fall back to
+          // the old fashioned way after the timeout.
+          timer.cancel();
+          channel.cancel(NS_ERROR_SAVE_LINK_AS_TIMEOUT);
+        }
+        throw Cr.NS_ERROR_NO_INTERFACE;
+      } 
+    }
+
+    // if it we don't have the headers after a short time, the user 
+    // won't have received any feedback from their click.  that's bad.  so
+    // we give up waiting for the filename. 
+    function timerCallback() {}
+    timerCallback.prototype = {
+      notify: function sLA_timer_notify(aTimer) {
+        channel.cancel(NS_ERROR_SAVE_LINK_AS_TIMEOUT);
+        return;
+      }
+    }
+
+    // setting up a new channel for 'right click - save link as ...'
+    var channel = NetUtil.newChannel({
+                    uri: makeURI(linkURL),
+                    loadingPrincipal: this.target.ownerDocument.nodePrincipal,
+                    contentPolicyType: Ci.nsIContentPolicy.TYPE_SAVEAS_DOWNLOAD,
+                    securityFlags: Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS,
+                  });
+
+    if (linkDownload)
+      channel.contentDispositionFilename = linkDownload;
+    if (channel instanceof Ci.nsIPrivateBrowsingChannel) {
+      let docIsPrivate = PrivateBrowsingUtils.isWindowPrivate(doc.defaultView);
+      channel.setPrivate(docIsPrivate);
+    }
+    channel.notificationCallbacks = new callbacks();
+
+    let flags = Ci.nsIChannel.LOAD_CALL_CONTENT_SNIFFERS;
+
+    if (bypassCache)
+      flags |= Ci.nsIRequest.LOAD_BYPASS_CACHE;
+
+    if (channel instanceof Ci.nsICachingChannel)
+      flags |= Ci.nsICachingChannel.LOAD_BYPASS_LOCAL_CACHE_IF_BUSY;
+
+    channel.loadFlags |= flags;
+
+    if (channel instanceof Ci.nsIHttpChannel) {
+      channel.referrer = doc.documentURIObject;
+      if (channel instanceof Ci.nsIHttpChannelInternal)
+        channel.forceAllowThirdPartyCookie = true;
+    }
+
+    // fallback to the old way if we don't see the headers quickly 
+    var timeToWait = 
+      gPrefService.getIntPref("browser.download.saveLinkAsFilenameTimeout");
+    var timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+    timer.initWithCallback(new timerCallback(), timeToWait,
+                           timer.TYPE_ONE_SHOT);
+
+    // kick off the channel with our proxy object as the listener
+    channel.asyncOpen2(new saveAsListener());
+  },
+
+  // Save URL of clicked-on link.
+  saveLink: function() {
+    var doc =  this.target.ownerDocument;
+    var linkText;
+    // If selected text is found to match valid URL pattern.
+    if (this.onPlainTextLink)
+      linkText = document.commandDispatcher.focusedWindow.getSelection().toString().trim();
+    else
+      linkText = this.linkText();
+    urlSecurityCheck(this.linkURL, doc.nodePrincipal);
+
+    this.saveHelper(this.linkURL, linkText, null, true, doc,
+                    this.linkDownload);
+  },
+
+  sendLink: function() {
+    // we don't know the title of the link so pass in an empty string
+    MailIntegration.sendMessage( this.linkURL, "" );
+  },
+
+  // Backwards-compatibility wrapper
+  saveImage : function() {
+    if (this.onCanvas || this.onImage)
+        this.saveMedia();
+  },
+
+  // Save URL of the clicked upon image, video, or audio.
+  saveMedia: function() {
+    var doc = this.target.ownerDocument;
+    let referrerURI = doc.documentURIObject;
+    let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(this.browser);
+    if (this.onCanvas) {
+      // Bypass cache, since it's a blob: URL.
+      var target = this.target;
+      var win = doc.defaultView;
+      if (!win) {
+        Components.utils.reportError(
+            "Save Image As (on the <canvas> element):\n" +
+            "This feature cannot be used, because it hasn't found " + 
+            "an appropriate window.");
+      } else {
+        new Promise.resolve({then: function (resolve) {
+          target.toBlob((blob) => {
+          resolve(win.URL.createObjectURL(blob));
+        })
+        }}).then(function (blobURL) {
+          saveImageURL(blobURL, "canvas.png", "SaveImageTitle",
+                       true, false, referrerURI, null, null, null,
+                       isPrivate);
+        }, Components.utils.reportError);
+      }
+    } else if (this.onImage) {
+      urlSecurityCheck(this.mediaURL, doc.nodePrincipal);
+      saveImageURL(this.mediaURL, null, "SaveImageTitle",
+                   false, false, referrerURI, doc, null, null,
+                   isPrivate);
+    } else if (this.onVideo || this.onAudio) {
+      urlSecurityCheck(this.mediaURL, doc.nodePrincipal);
+      var dialogTitle = this.onVideo ? "SaveVideoTitle" : "SaveAudioTitle";
+      this.saveHelper(this.mediaURL, null, dialogTitle, false, doc, "");
+    }
+  },
+
+  // Backwards-compatibility wrapper
+  sendImage : function() {
+    if (this.onCanvas || this.onImage)
+        this.sendMedia();
+  },
+
+  sendMedia: function() {
+    MailIntegration.sendMessage(this.mediaURL, "");
+  },
+
+  playPlugin: function() {
+    gPluginHandler._showClickToPlayNotification(this.browser, this.target);
+  },
+
+  hidePlugin: function() {
+    gPluginHandler.hideClickToPlayOverlay(this.target);
+  },
+
+  // Generate email address and put it on clipboard.
+  copyEmail: function() {
+    // Copy the comma-separated list of email addresses only.
+    // There are other ways of embedding email addresses in a mailto:
+    // link, but such complex parsing is beyond us.
+    var url = this.linkURL;
+    var qmark = url.indexOf("?");
+    var addresses;
+
+    // 7 == length of "mailto:"
+    addresses = qmark > 7 ? url.substring(7, qmark) : url.substr(7);
+
+    // Let's try to unescape it using a character set
+    // in case the address is not ASCII.
+    try {
+      var characterSet = this.target.ownerDocument.characterSet;
+      const textToSubURI = Cc["@mozilla.org/intl/texttosuburi;1"].
+                           getService(Ci.nsITextToSubURI);
+      addresses = textToSubURI.unEscapeURIForUI(characterSet, addresses);
+    }
+    catch(ex) {
+      // Do nothing.
+    }
+
+    var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                    getService(Ci.nsIClipboardHelper);
+    clipboard.copyString(addresses, document);
+  },
+
+  ///////////////
+  // Utilities //
+  ///////////////
+
+  // Show/hide one item (specified via name or the item element itself).
+  showItem: function(aItemOrId, aShow) {
+    var item = aItemOrId.constructor == String ?
+      document.getElementById(aItemOrId) : aItemOrId;
+    if (item)
+      item.hidden = !aShow;
+  },
+
+  // Set given attribute of specified context-menu item.  If the
+  // value is null, then it removes the attribute (which works
+  // nicely for the disabled attribute).
+  setItemAttr: function(aID, aAttr, aVal ) {
+    var elem = document.getElementById(aID);
+    if (elem) {
+      if (aVal == null) {
+        // null indicates attr should be removed.
+        elem.removeAttribute(aAttr);
+      }
+      else {
+        // Set attr=val.
+        elem.setAttribute(aAttr, aVal);
+      }
+    }
+  },
+
+  // Set context menu attribute according to like attribute of another node
+  // (such as a broadcaster).
+  setItemAttrFromNode: function(aItem_id, aAttr, aOther_id) {
+    var elem = document.getElementById(aOther_id);
+    if (elem && elem.getAttribute(aAttr) == "true")
+      this.setItemAttr(aItem_id, aAttr, "true");
+    else
+      this.setItemAttr(aItem_id, aAttr, null);
+  },
+
+  // Temporary workaround for DOM api not yet implemented by XUL nodes.
+  cloneNode: function(aItem) {
+    // Create another element like the one we're cloning.
+    var node = document.createElement(aItem.tagName);
+
+    // Copy attributes from argument item to the new one.
+    var attrs = aItem.attributes;
+    for (var i = 0; i < attrs.length; i++) {
+      var attr = attrs.item(i);
+      node.setAttribute(attr.nodeName, attr.nodeValue);
+    }
+
+    // Voila!
+    return node;
+  },
+
+  // Generate fully qualified URL for clicked-on link.
+  getLinkURL: function() {
+    var href = this.link.href;  
+    if (href)
+      return href;
+
+    href = this.link.getAttributeNS("http://www.w3.org/1999/xlink",
+                                    "href");
+
+    if (!href || !href.match(/\S/)) {
+      // Without this we try to save as the current doc,
+      // for example, HTML case also throws if empty
+      throw "Empty href";
+    }
+
+    return makeURLAbsolute(this.link.baseURI, href);
+  },
+
+  getLinkURI: function() {
+    try {
+      return makeURI(this.linkURL);
+    }
+    catch (ex) {
+     // e.g. empty URL string
+    }
+
+    return null;
+  },
+
+  getLinkProtocol: function() {
+    if (this.linkURI)
+      return this.linkURI.scheme; // can be |undefined|
+
+    return null;
+  },
+
+  // Get text of link.
+  linkText: function() {
+    var text = gatherTextUnder(this.link);
+    if (!text || !text.match(/\S/)) {
+      text = this.link.getAttribute("title");
+      if (!text || !text.match(/\S/)) {
+        text = this.link.getAttribute("alt");
+        if (!text || !text.match(/\S/))
+          text = this.linkURL;
+      }
+    }
+
+    return text;
+  },
+
+  // Returns true if anything is selected.
+  isContentSelection: function() {
+    return !document.commandDispatcher.focusedWindow.getSelection().isCollapsed;
+  },
+
+  toString: function () {
+    return "contextMenu.target     = " + this.target + "\n" +
+           "contextMenu.onImage    = " + this.onImage + "\n" +
+           "contextMenu.onLink     = " + this.onLink + "\n" +
+           "contextMenu.link       = " + this.link + "\n" +
+           "contextMenu.inFrame    = " + this.inFrame + "\n" +
+           "contextMenu.hasBGImage = " + this.hasBGImage + "\n";
+  },
+
+  isDisabledForEvents: function(aNode) {
+    let ownerDoc = aNode.ownerDocument;
+    return ownerDoc.defaultView &&
+           ownerDoc.defaultView
+              .QueryInterface(Components.interfaces.nsIInterfaceRequestor)
+              .getInterface(Components.interfaces.nsIDOMWindowUtils)
+              .isNodeDisabledForEvents(aNode);
+  },
+
+  isTargetATextBox: function(node) {
+    if (node instanceof HTMLInputElement)
+      return node.mozIsTextField(false);
+
+    return (node instanceof HTMLTextAreaElement);
+  },
+
+  isTargetAKeywordField: function(aNode) {
+    if (!(aNode instanceof HTMLInputElement))
+      return false;
+
+    var form = aNode.form;
+    if (!form || aNode.type == "password")
+      return false;
+
+    var method = form.method.toUpperCase();
+
+    // These are the following types of forms we can create keywords for:
+    //
+    // method   encoding type       can create keyword
+    // GET      *                                 YES
+    //          *                                 YES
+    // POST                                       YES
+    // POST     application/x-www-form-urlencoded YES
+    // POST     text/plain                        NO (a little tricky to do)
+    // POST     multipart/form-data               NO
+    // POST     everything else                   YES
+    return (method == "GET" || method == "") ||
+           (form.enctype != "text/plain") && (form.enctype != "multipart/form-data");
+  },
+
+  // Determines whether or not the separator with the specified ID should be
+  // shown or not by determining if there are any non-hidden items between it
+  // and the previous separator.
+  shouldShowSeparator: function (aSeparatorID) {
+    var separator = document.getElementById(aSeparatorID);
+    if (separator) {
+      var sibling = separator.previousSibling;
+      while (sibling && sibling.localName != "menuseparator") {
+        if (!sibling.hidden)
+          return true;
+        sibling = sibling.previousSibling;
+      }
+    }
+    return false;
+  },
+
+  addDictionaries: function() {
+    var uri = formatURL("browser.dictionaries.download.url", true);
+
+    var locale = "-";
+    try {
+      locale = gPrefService.getComplexValue("intl.accept_languages",
+                                            Ci.nsIPrefLocalizedString).data;
+    }
+    catch (e) { }
+
+    var version = "-";
+    try {
+      version = Cc["@mozilla.org/xre/app-info;1"].
+                getService(Ci.nsIXULAppInfo).version;
+    }
+    catch (e) { }
+
+    uri = uri.replace(/%LOCALE%/, escape(locale)).replace(/%VERSION%/, version);
+
+    var newWindowPref = gPrefService.getIntPref("browser.link.open_newwindow");
+    var where = newWindowPref == 3 ? "tab" : "window";
+
+    openUILinkIn(uri, where);
+  },
+
+  bookmarkThisPage: function CM_bookmarkThisPage() {
+    window.top.PlacesCommandHook.bookmarkPage(this.browser, PlacesUtils.bookmarksMenuFolderId, true);
+  },
+
+  bookmarkLink: function CM_bookmarkLink() {
+    var linkText;
+    // If selected text is found to match valid URL pattern.
+    if (this.onPlainTextLink)
+      linkText = document.commandDispatcher.focusedWindow.getSelection().toString().trim();
+    else
+      linkText = this.linkText();
+    window.top.PlacesCommandHook.bookmarkLink(PlacesUtils.bookmarksMenuFolderId, this.linkURL,
+                                              linkText);
+  },
+
+  addBookmarkForFrame: function CM_addBookmarkForFrame() {
+    var doc = this.target.ownerDocument;
+    var uri = doc.documentURIObject;
+
+    var itemId = PlacesUtils.getMostRecentBookmarkForURI(uri);
+    if (itemId == -1) {
+      var title = doc.title;
+      var description = PlacesUIUtils.getDescriptionFromDocument(doc);
+      PlacesUIUtils.showBookmarkDialog({ action: "add"
+                                       , type: "bookmark"
+                                       , uri: uri
+                                       , title: title
+                                       , description: description
+                                       , hiddenRows: [ "description"
+                                                     , "location"
+                                                     , "loadInSidebar"
+                                                     , "keyword" ]
+                                       }, window.top);
+    }
+    else {
+      PlacesUIUtils.showBookmarkDialog({ action: "edit"
+                                       , type: "bookmark"
+                                       , itemId: itemId
+                                       }, window.top);
+    }
+  },
+
+  savePageAs: function CM_savePageAs() {
+    saveDocument(this.browser.contentDocument);
+  },
+
+  sendPage: function CM_sendPage() {
+    MailIntegration.sendLinkForWindow(this.browser.contentWindow);  
+  },
+
+  printFrame: function CM_printFrame() {
+    PrintUtils.print(this.target.ownerDocument.defaultView);
+  },
+
+  switchPageDirection: function CM_switchPageDirection() {
+    SwitchDocumentDirection(this.browser.contentWindow);
+  },
+
+  mediaCommand : function CM_mediaCommand(command, data) {
+    var media = this.target;
+
+    switch (command) {
+      case "play":
+        media.play();
+        break;
+      case "pause":
+        media.pause();
+        break;
+      case "loop":
+        media.loop = !media.loop;
+        break;
+      case "mute":
+        media.muted = true;
+        break;
+      case "unmute":
+        media.muted = false;
+        break;
+      case "playbackRate":
+        media.playbackRate = data;
+        break;
+      case "hidecontrols":
+        media.removeAttribute("controls");
+        break;
+      case "showcontrols":
+        media.setAttribute("controls", "true");
+        break;
+      case "hidestats":
+      case "showstats":
+        var event = media.ownerDocument.createEvent("CustomEvent");
+        event.initCustomEvent("media-showStatistics", false, true, command == "showstats");
+        media.dispatchEvent(event);
+        break;
+    }
+  },
+
+  copyMediaLocation : function () {
+    var clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
+                    getService(Ci.nsIClipboardHelper);
+    clipboard.copyString(this.mediaURL, document);
+  },
+
+  get imageURL() {
+    if (this.onImage)
+      return this.mediaURL;
+    return "";
+  },
+
+  // Formats the 'Search <engine> for "<selection or link text>"' context menu.
+  formatSearchContextItem: function() {
+    var menuItem = document.getElementById("context-searchselect");
+    var selectedText = this.isTextSelected ? this.textSelected : this.linkText();
+
+    // Store searchTerms in context menu item so we know what to search onclick
+    menuItem.searchTerms = selectedText;
+
+    if (selectedText.length > 15)
+      selectedText = selectedText.substr(0,15) + this.ellipsis;
+
+    // Use the current engine if the search bar is visible, the default
+    // engine otherwise.
+    var engineName = "";
+    var ss = Cc["@mozilla.org/browser/search-service;1"].
+             getService(Ci.nsIBrowserSearchService);
+    if (isElementVisible(BrowserSearch.searchBar))
+      engineName = ss.currentEngine.name;
+    else
+      engineName = ss.defaultEngine.name;
+
+    // format "Search <engine> for <selection>" string to show in menu
+    var menuLabel = gNavigatorBundle.getFormattedString("contextMenuSearch",
+                                                        [engineName,
+                                                         selectedText]);
+    menuItem.label = menuLabel;
+    menuItem.accessKey = gNavigatorBundle.getString("contextMenuSearch.accesskey");
+  }
+};
diff --git a/webbrowser/base/content/openLocation.js b/webbrowser/base/content/openLocation.js
new file mode 100644
index 0000000..7ad2f7c
--- /dev/null
+++ b/webbrowser/base/content/openLocation.js
@@ -0,0 +1,150 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var browser;
+var dialog = {};
+var pref = null;
+var openLocationModule = {};
+try {
+  pref = Components.classes["@mozilla.org/preferences-service;1"]
+                   .getService(Components.interfaces.nsIPrefBranch);
+} catch (ex) {
+  // not critical, remain silent
+}
+
+Components.utils.import("resource:///modules/openLocationLastURL.jsm", openLocationModule);
+var gOpenLocationLastURL = new openLocationModule.OpenLocationLastURL(window.opener);
+
+function onLoad()
+{
+  dialog.input         = document.getElementById("dialog.input");
+  dialog.open          = document.documentElement.getButton("accept");
+  dialog.openWhereList = document.getElementById("openWhereList");
+  dialog.openTopWindow = document.getElementById("currentWindow");
+  dialog.bundle        = document.getElementById("openLocationBundle");
+
+  if ("arguments" in window && window.arguments.length >= 1)
+    browser = window.arguments[0];
+   
+  dialog.openWhereList.selectedItem = dialog.openTopWindow;
+
+  if (pref) {
+    try {
+      var useAutoFill = pref.getBoolPref("browser.urlbar.autoFill");
+      if (useAutoFill)
+        dialog.input.setAttribute("completedefaultindex", "true");
+    } catch (ex) {}
+
+    try {
+      var value = pref.getIntPref("general.open_location.last_window_choice");
+      var element = dialog.openWhereList.getElementsByAttribute("value", value)[0];
+      if (element)
+        dialog.openWhereList.selectedItem = element;
+      dialog.input.value = gOpenLocationLastURL.value;
+    }
+    catch(ex) {
+    }
+    if (dialog.input.value)
+      dialog.input.select(); // XXX should probably be done automatically
+  }
+
+  doEnabling();
+}
+
+function doEnabling()
+{
+    dialog.open.disabled = !dialog.input.value;
+}
+
+function open()
+{
+  var openData = {
+    "url": null,
+    "postData": null,
+    "mayInheritPrincipal": false
+  };
+  if (browser) {
+    browser.getShortcutOrURIAndPostData(dialog.input.value).then(data => {
+      openData.url = data.url;
+      openData.postData = data.postData;
+      openData.mayInheritPrincipal = data.mayInheritPrincipal;
+
+      openLocation(openData);
+    });
+  } else {
+    openData.url = dialog.input.value;
+
+    openLocation(openData);
+  }
+
+  return false;
+}
+
+function openLocation(openData)
+{
+  try {
+    // Whichever target we use for the load, we allow third-party services to
+    // fix up the URI
+    switch (dialog.openWhereList.value) {
+      case "0":
+        var webNav = Components.interfaces.nsIWebNavigation;
+        var flags = webNav.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
+                    webNav.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+        if (!openData.mayInheritPrincipal)
+          flags |= webNav.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
+        browser.gBrowser.loadURIWithFlags(
+            openData.url, flags, null, null, openData.postData);
+        break;
+      case "1":
+        window.opener.delayedOpenWindow(getBrowserURL(), "all,dialog=no",
+                                        openData.url, openData.postData,
+                                        null, null, true);
+        break;
+      case "3":
+        browser.delayedOpenTab(
+            openData.url, null, null, openData.postData, true);
+        break;
+    }
+  } catch (ex) {}
+
+  if (pref) {
+    gOpenLocationLastURL.value = dialog.input.value;
+    pref.setIntPref(
+        "general.open_location.last_window_choice", dialog.openWhereList.value);
+  }
+
+  window.close();
+}
+
+function createInstance(contractid, iidName)
+{
+  var iid = Components.interfaces[iidName];
+  return Components.classes[contractid].createInstance(iid);
+}
+
+const nsIFilePicker = Components.interfaces.nsIFilePicker;
+function onChooseFile()
+{
+  try {
+    let fp = Components.classes["@mozilla.org/filepicker;1"].
+             createInstance(nsIFilePicker);
+    let fpCallback = function fpCallback_done(aResult) {
+      if (aResult == nsIFilePicker.returnOK && fp.fileURL.spec &&
+          fp.fileURL.spec.length > 0) {
+        dialog.input.value = fp.fileURL.spec;
+      }
+      doEnabling();
+    };
+
+    fp.init(window, dialog.bundle.getString("chooseFileDialogTitle"),
+            nsIFilePicker.modeOpen);
+    fp.appendFilters(nsIFilePicker.filterAll | nsIFilePicker.filterText |
+                     nsIFilePicker.filterImages | nsIFilePicker.filterXML |
+                     nsIFilePicker.filterHTML);
+    fp.open(fpCallback);
+  } catch (ex) {
+  }
+}
diff --git a/webbrowser/base/content/openLocation.xul b/webbrowser/base/content/openLocation.xul
new file mode 100644
index 0000000..7bafed0
--- /dev/null
+++ b/webbrowser/base/content/openLocation.xul
@@ -0,0 +1,57 @@
+<?xml version="1.0"?> 
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+
+<!DOCTYPE dialog SYSTEM "chrome://browser/locale/openLocation.dtd">
+ 
+<dialog id="openLocation"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        title="&caption.label;"
+        onload="onLoad()"
+        buttonlabelaccept="&openBtn.label;"
+        buttoniconaccept="open"
+        ondialogaccept="open()"
+        style="width: 40em;"
+        persist="screenX screenY"
+        screenX="24" screenY="24">
+              
+  <script type="application/javascript" src="chrome://global/content/globalOverlay.js"/> 
+  <script type="application/javascript" src="chrome://browser/content/openLocation.js"/>
+  <script type="application/javascript" src="chrome://browser/content/utilityOverlay.js"/>
+  
+  <stringbundle id="openLocationBundle" src="chrome://browser/locale/openLocation.properties"/>
+
+  <hbox>
+    <separator orient="vertical" class="thin"/>
+    <vbox flex="1">
+      <description>&enter.label;</description>
+      <separator class="thin"/>
+
+      <hbox align="center">
+        <textbox id="dialog.input" flex="1" type="autocomplete"
+                  completeselectedindex="true"
+                  autocompletesearch="urlinline history"
+                  enablehistory="true"
+                  class="uri-element"
+                  oninput="doEnabling();"/>
+        <button label="&chooseFile.label;" oncommand="onChooseFile();"/>
+      </hbox>
+      <hbox align="center">
+        <label value="&openWhere.label;"/>
+        <menulist id="openWhereList">
+          <menupopup>
+            <menuitem value="0" id="currentWindow" label="&topTab.label;"/>
+            <menuitem value="3" label="&newTab.label;"/>
+            <menuitem value="1" label="&newWindow.label;"/>
+          </menupopup>
+        </menulist>
+        <spacer flex="1"/>
+      </hbox>
+    </vbox>
+  </hbox> 
+           
+</dialog>
diff --git a/webbrowser/base/content/overrides/app-license.html b/webbrowser/base/content/overrides/app-license.html
new file mode 100644
index 0000000..2d2e3d5
--- /dev/null
+++ b/webbrowser/base/content/overrides/app-license.html
@@ -0,0 +1,6 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/.  -->
+    <p><b>Binaries</b> of this product have been made available to you by the
+    <a href="http://www.palemoon.org/">Pale Moon Project</a> under the Pale Moon
+    Binary <a href="http://www.palemoon.org/redist.shtml">redistribution license</a>.</p>
\ No newline at end of file
diff --git a/webbrowser/base/content/padlock.css b/webbrowser/base/content/padlock.css
new file mode 100644
index 0000000..649cb27
--- /dev/null
+++ b/webbrowser/base/content/padlock.css
@@ -0,0 +1,203 @@
+#padlock-ib {
+  -moz-appearance: none;
+  min-width: 0px;
+  margin-right: 1px !important;
+  background-repeat: no-repeat;
+  background-position: center;
+  z-index: 1000 !important;
+  padding: 0px;
+  margin: 0px;
+  border: 0px; 
+}
+
+#padlock-ib[padshow="ib-trans-bg"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_ev.png");
+  background-color: transparent;
+}
+
+#padlock-ib[padshow="ib-trans-bg"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_https.png");
+  background-color: transparent;
+}
+
+#padlock-ib[padshow="ib-trans-bg"][level="low"],
+#padlock-ib[padshow="ib-trans-bg"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_low.png");
+  background-color: transparent;
+}
+
+#padlock-ib[padshow="ib-trans-bg"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_broken.png");
+  background-color: transparent;
+}
+
+#padlock-ib-left {
+  -moz-appearance: none;
+  min-width: 0px;
+  margin-right: 1px !important;
+  background-repeat: no-repeat;
+  background-position: center;
+  z-index: 1000 !important;
+  padding: 0px;
+  margin: 0px;
+  border: 0px; 
+}
+
+#padlock-ib-left[padshow="ib-left"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_ev.png");
+  padding: 2px;
+  background-color: transparent;
+}
+
+#padlock-ib-left[padshow="ib-left"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_https.png");
+  padding: 2px;
+  background-color: transparent;
+}
+
+#padlock-ib-left[padshow="ib-left"][level="low"],
+#padlock-ib-left[padshow="ib-left"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_low.png");
+  padding: 2px;
+  background-color: transparent;
+}
+
+#padlock-ib-left[padshow="ib-left"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_broken.png");
+  padding: 2px;
+  background-color: transparent;
+}
+
+#padlock-ub-right {
+  -moz-appearance: none;
+  min-width: 0px;
+  margin-right: 1px !important;
+  background-repeat: no-repeat;
+  background-position: center;
+  z-index: 1000 !important;
+  padding: 0px;
+  margin: 0px;
+  border: 0px; 
+}
+
+#padlock-ub-right[padshow="ub-right"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_ev.png");
+  background-color: transparent;
+}
+
+#padlock-ub-right[padshow="ub-right"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_https.png");
+  background-color: transparent;
+}
+
+#padlock-ub-right[padshow="ub-right"][level="low"],
+#padlock-ub-right[padshow="ub-right"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_low.png");
+  background-color: transparent;
+}
+
+#padlock-ub-right[padshow="ub-right"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_broken.png");
+  background-color: transparent;
+}
+
+#padlock-sb {
+  -moz-appearance: none;
+  background-repeat: no-repeat;
+  background-position: center;
+}
+
+#padlock-sb[padshow="statbar"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_ev.png");
+  background-color: transparent;
+}
+
+#padlock-sb[padshow="statbar"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_https.png");
+  background-color: transparent;
+}
+
+#padlock-sb[padshow="statbar"][level="low"],
+#padlock-sb[padshow="statbar"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_low.png");
+  background-color: transparent;
+}
+
+#padlock-sb[padshow="statbar"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_broken.png");
+  background-color: transparent;
+}
+
+#padlock-tab {
+  -moz-appearance: none;
+  background-repeat: no-repeat;
+  background-position: center;
+}
+
+#padlock-tab[padshow="tabs-bar"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_ev.png");
+  background-color: transparent;
+}
+
+#padlock-tab[padshow="tabs-bar"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_https.png");
+  background-color: transparent;
+}
+
+#padlock-tab[padshow="tabs-bar"][level="low"],
+#padlock-tab[padshow="tabs-bar"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_low.png");
+  background-color: transparent;
+}
+
+#padlock-tab[padshow="tabs-bar"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_mod_broken.png");
+  background-color: transparent;
+}
+
+/* Classic style */
+#padlock-ib[padshow="ib-trans-bg"][padstyle="classic"][level="ev"],
+#padlock-ib-left[padshow="ib-left"][padstyle="classic"][level="ev"],
+#padlock-ub-right[padshow="ub-right"][padstyle="classic"][level="ev"],
+#padlock-sb[padshow="statbar"][padstyle="classic"][level="ev"],
+#padlock-tab[padshow="tabs-bar"][padstyle="classic"][level="ev"] {
+  list-style-image: url("chrome://browser/content/padlock_classic_ev.png");
+}
+
+#padlock-ib[padshow="ib-trans-bg"][padstyle="classic"][level="high"],
+#padlock-ib-left[padshow="ib-left"][padstyle="classic"][level="high"],
+#padlock-ub-right[padshow="ub-right"][padstyle="classic"][level="high"],
+#padlock-sb[padshow="statbar"][padstyle="classic"][level="high"],
+#padlock-tab[padshow="tabs-bar"][padstyle="classic"][level="high"] {
+  list-style-image: url("chrome://browser/content/padlock_classic_https.png");
+}
+
+#padlock-ib[padshow="ib-trans-bg"][padstyle="classic"][level="low"],
+#padlock-ib-left[padshow="ib-left"][padstyle="classic"][level="low"],
+#padlock-ub-right[padshow="ub-right"][padstyle="classic"][level="low"],
+#padlock-sb[padshow="statbar"][padstyle="classic"][level="low"],
+#padlock-tab[padshow="tabs-bar"][padstyle="classic"][level="low"],
+#padlock-ib[padshow="ib-trans-bg"][padstyle="classic"][level="mixed"],
+#padlock-ib-left[padshow="ib-left"][padstyle="classic"][level="mixed"],
+#padlock-ub-right[padshow="ub-right"][padstyle="classic"][level="mixed"],
+#padlock-sb[padshow="statbar"][padstyle="classic"][level="mixed"],
+#padlock-tab[padshow="tabs-bar"][padstyle="classic"][level="mixed"] {
+  list-style-image: url("chrome://browser/content/padlock_classic_low.png");
+}
+
+#padlock-ib[padshow="ib-trans-bg"][padstyle="classic"][level="broken"],
+#padlock-ib-left[padshow="ib-left"][padstyle="classic"][level="broken"],
+#padlock-ub-right[padshow="ub-right"][padstyle="classic"][level="broken"],
+#padlock-sb[padshow="statbar"][padstyle="classic"][level="broken"],
+#padlock-tab[padshow="tabs-bar"][padstyle="classic"][level="broken"] {
+  list-style-image: url("chrome://browser/content/padlock_classic_broken.png");
+}
+
+/* Remove a few px of dead space for disabled locations */
+#padlock-ib:not([padshow="ib-trans-bg"]),
+#padlock-ib-left:not([padshow="ib-left"]),
+#padlock-ub-right:not([padshow="ub-right"]),
+#padlock-sb:not([padshow="statbar"]),
+#padlock-tab:not([padshow="tabs-bar"]) {
+    visibility: collapse;
+}
\ No newline at end of file
diff --git a/webbrowser/base/content/padlock.js b/webbrowser/base/content/padlock.js
new file mode 100644
index 0000000..9c29524
--- /dev/null
+++ b/webbrowser/base/content/padlock.js
@@ -0,0 +1,234 @@
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+var padlock_PadLock =
+{
+    QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
+                                           Ci.nsISupportsWeakReference]),
+  onButtonClick: function(event) {
+    event.stopPropagation();
+    gIdentityHandler.handleMoreInfoClick(event);
+  },
+    onStateChange: function() {},
+    onProgressChange: function() {},
+    onLocationChange: function() {},
+    onStatusChange: function() {},
+    onSecurityChange: function(aCallerWebProgress, aRequestWithState, aState) {
+        // aState is defined as a bitmask that may be extended in the future.
+        // We filter out any unknown bits before testing for known values.
+        const wpl = Ci.nsIWebProgressListener;
+        const wpl_security_bits = wpl.STATE_IS_SECURE |
+                                  wpl.STATE_IS_BROKEN |
+                                  wpl.STATE_IS_INSECURE |
+                                  wpl.STATE_IDENTITY_EV_TOPLEVEL |
+                                  wpl.STATE_SECURE_HIGH |
+                                  wpl.STATE_SECURE_MED |
+                                  wpl.STATE_SECURE_LOW;
+        var level;
+        var is_insecure;
+        var highlight_urlbar = false;
+
+        switch (aState & wpl_security_bits) {
+          case wpl.STATE_IS_SECURE | wpl.STATE_SECURE_HIGH | wpl.STATE_IDENTITY_EV_TOPLEVEL:
+            level = "ev";
+            is_insecure = "";
+            highlight_urlbar = true;
+            break;
+          case wpl.STATE_IS_SECURE | wpl.STATE_SECURE_HIGH:
+            level = "high";
+            is_insecure = "";
+            highlight_urlbar = true;
+            break;
+          case wpl.STATE_IS_SECURE | wpl.STATE_SECURE_MED:
+          case wpl.STATE_IS_SECURE | wpl.STATE_SECURE_LOW:
+            level = "low";
+            is_insecure = "insecure";
+            break;
+          case wpl.STATE_IS_BROKEN | wpl.STATE_SECURE_LOW:
+            level = "mixed";
+            is_insecure = "insecure";
+            highlight_urlbar = true;
+            break;
+          case wpl.STATE_IS_BROKEN:
+            level = "broken";
+            is_insecure = "insecure";
+            highlight_urlbar = true;
+            break;
+          default: // should not be reached
+            level = null;
+            is_insecure = "insecure";
+        }
+
+        try {
+          var proto = gBrowser.contentWindow.location.protocol;
+          if (proto == "about:" || proto == "chrome:" || proto == "file:" ) {
+            // do not warn when using local protocols
+            is_insecure = false;
+          }
+        }
+        catch (ex) {}
+        
+        let ub = document.getElementById("urlbar");
+        if (ub) { // Only call if URL bar is present.
+          if (highlight_urlbar) {
+            ub.setAttribute("security_level", level);
+          } else {
+            ub.removeAttribute("security_level");
+          }
+        }
+
+        try { // URL bar may be hidden
+          padlock_PadLock.setPadlockLevel("padlock-ib", level);
+          padlock_PadLock.setPadlockLevel("padlock-ib-left", level);
+          padlock_PadLock.setPadlockLevel("padlock-ub-right", level);
+        } catch(e) {}
+        padlock_PadLock.setPadlockLevel("padlock-sb", level);
+        padlock_PadLock.setPadlockLevel("padlock-tab", level);
+    },
+  setPadlockLevel: function(item, level) {
+    let secbut = document.getElementById(item);
+    var sectooltip = "";
+    
+    if (level) {
+      secbut.setAttribute("level", level);
+      secbut.hidden = false;
+    } else {
+      secbut.hidden = true;
+      secbut.removeAttribute("level");
+    }
+    
+    switch (level) {
+      case "ev":
+        sectooltip = "Extended Validated";
+        break;
+      case "high":
+        sectooltip = "Secure";
+        break;
+      case "low":
+        sectooltip = "Weak security";
+        break;
+      case "mixed":
+        sectooltip = "Mixed mode (partially encrypted)";
+        break;
+      case "broken":
+        sectooltip = "Not secure";
+        break;
+      default:
+        sectooltip = "";
+    }
+    secbut.setAttribute("tooltiptext", sectooltip);
+  },
+  prefbranch : null,
+  onLoad: function() {
+    gBrowser.addProgressListener(padlock_PadLock);
+    
+    var prefService = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);
+    padlock_PadLock.prefbranch = prefService.getBranch("browser.padlock.");
+    padlock_PadLock.prefbranch.QueryInterface(Components.interfaces.nsIPrefBranch2);
+    padlock_PadLock.usePrefs();
+    padlock_PadLock.prefbranch.addObserver("", padlock_PadLock, false);
+  },
+  onUnLoad: function() {
+    padlock_PadLock.prefbranch.removeObserver("", padlock_PadLock);
+  },
+  observe: function(subject, topic, data)
+  {
+    if (topic != "nsPref:changed")
+      return;
+    if (data != "style" && data != "urlbar_background" && data != "shown")
+      return;
+    padlock_PadLock.usePrefs();
+  },
+  usePrefs: function() {
+    var prefval = padlock_PadLock.prefbranch.getIntPref("style");
+    var position;
+    var padstyle;
+    if (prefval == 2) {
+      position = "ib-left";
+      padstyle = "modern";
+    }
+    else if (prefval == 3) {
+      position = "ub-right";
+      padstyle = "modern";
+    }
+    else if (prefval == 4) {
+      position = "statbar";
+      padstyle = "modern";
+    }
+    else if (prefval == 5) {
+      position = "tabs-bar";
+      padstyle = "modern";
+    }
+    else if (prefval == 6) {
+      position = "ib-trans-bg";
+      padstyle = "classic";
+    }
+    else if (prefval == 7) {
+      position = "ib-left";
+      padstyle = "classic";
+    }
+    else if (prefval == 8) {
+      position = "ub-right";
+      padstyle = "classic";
+    }
+    else if (prefval == 9) {
+      position = "statbar";
+      padstyle = "classic";
+    }
+    else if (prefval == 10) {
+      position = "tabs-bar";
+      padstyle = "classic";
+    }
+    else { // 1 or anything else_ default
+      position = "ib-trans-bg";
+      padstyle = "modern";
+    }
+
+    var colshow;
+    var colprefval = padlock_PadLock.prefbranch.getIntPref("urlbar_background");
+    switch (colprefval) {
+      case 3: 
+        colshow = "all";
+        break;
+      case 2: 
+        colshow = "secure-mixed";
+        break;
+      case 1: 
+        colshow = "secure-only";
+        break;
+      default: 
+        colshow = ""; // 0 or anything else: no shading
+    }
+    try { // URL bar may be hidden
+      document.getElementById("urlbar").setAttribute("https_color", colshow);
+    } catch(e) {}
+
+    var lockenabled = padlock_PadLock.prefbranch.getBoolPref("shown");
+    var padshow = "";
+    if (lockenabled) {
+      padshow = position;
+    }
+
+    try { // URL bar may be hidden
+      document.getElementById("padlock-ib").setAttribute("padshow", padshow);
+      document.getElementById("padlock-ib-left").setAttribute("padshow", padshow);
+      document.getElementById("padlock-ub-right").setAttribute("padshow", padshow);
+    } catch(e) {}
+    document.getElementById("padlock-sb").setAttribute("padshow", padshow);
+    document.getElementById("padlock-tab").setAttribute("padshow", padshow);
+
+    try { // URL bar may be hidden
+      document.getElementById("padlock-ib").setAttribute("padstyle", padstyle);
+      document.getElementById("padlock-ib-left").setAttribute("padstyle", padstyle);
+      document.getElementById("padlock-ub-right").setAttribute("padstyle", padstyle);
+    } catch(e) {}
+    document.getElementById("padlock-sb").setAttribute("padstyle", padstyle);
+    document.getElementById("padlock-tab").setAttribute("padstyle", padstyle);
+
+  }
+};
+
+window.addEventListener("load", padlock_PadLock.onLoad, false );
+window.addEventListener("unload", padlock_PadLock.onUnLoad, false );
diff --git a/webbrowser/base/content/padlock.xul b/webbrowser/base/content/padlock.xul
new file mode 100644
index 0000000..e820c19
--- /dev/null
+++ b/webbrowser/base/content/padlock.xul
@@ -0,0 +1,63 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://browser/content/padlock.css" type="text/css"?>
+
+<overlay
+  id="padlock"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<script type="application/x-javascript" src="chrome://browser/content/padlock.js"/>
+
+  <hbox id="identity-box">
+    <image id="padlock-ib" insertafter="identity-icon-labels"
+           class="urlbar-icon"
+           style="-moz-user-focus: none;"
+           hidden="false"
+           tooltiptext=""
+           onclick="return padlock_PadLock.onButtonClick(event);"/>
+  </hbox>
+
+  <hbox id="identity-box">
+    <image id="padlock-ib-left" insertbefore="identity-icon-labels"
+           class="urlbar-icon"
+           style="-moz-user-focus: none;"
+           hidden="false"
+           tooltiptext=""
+           onclick="return padlock_PadLock.onButtonClick(event);"/>
+  </hbox>
+
+  <hbox id="urlbar-icons">
+    <image id="padlock-ub-right" insertbefore="star-button"
+           class="urlbar-icon"
+           style="-moz-user-focus: none;"
+           hidden="false"
+           tooltiptext=""
+           onclick="return padlock_PadLock.onButtonClick(event);"/>
+  </hbox>
+
+  <statusbar id="status-bar">
+    <statusbarpanel insertafter="security-button"
+      id="padlock-sb-panel" 
+      class="statusbar-iconic-text">
+      <image id="padlock-sb" insertbefore="star-button"
+             class="urlbar-icon"
+             style="-moz-user-focus: none;"
+             hidden="false"
+             tooltiptext=""
+             onclick="return padlock_PadLock.onButtonClick(event);"/>
+    </statusbarpanel>
+  </statusbar>
+
+  <toolbar id="TabsToolbar">
+    <toolbaritem insertafter="tabs-closebutton" id="tabs-padlock-tbitem"
+                  align="center" pack="center">
+      <image id="padlock-tab"
+             class="urlbar-icon"
+             style="-moz-user-focus: none;"
+             hidden="false"
+             tooltiptext=""
+             onclick="return padlock_PadLock.onButtonClick(event);"/>
+    </toolbaritem>
+  </toolbar>
+
+
+</overlay>
diff --git a/webbrowser/base/content/padlock_classic_broken.png b/webbrowser/base/content/padlock_classic_broken.png
new file mode 100644
index 0000000..437036f
--- /dev/null
+++ b/webbrowser/base/content/padlock_classic_broken.png
diff --git a/webbrowser/base/content/padlock_classic_ev.png b/webbrowser/base/content/padlock_classic_ev.png
new file mode 100644
index 0000000..b3f80c0
--- /dev/null
+++ b/webbrowser/base/content/padlock_classic_ev.png
diff --git a/webbrowser/base/content/padlock_classic_https.png b/webbrowser/base/content/padlock_classic_https.png
new file mode 100644
index 0000000..86026c0
--- /dev/null
+++ b/webbrowser/base/content/padlock_classic_https.png
diff --git a/webbrowser/base/content/padlock_classic_low.png b/webbrowser/base/content/padlock_classic_low.png
new file mode 100644
index 0000000..652ad09
--- /dev/null
+++ b/webbrowser/base/content/padlock_classic_low.png
diff --git a/webbrowser/base/content/padlock_mod_broken.png b/webbrowser/base/content/padlock_mod_broken.png
new file mode 100644
index 0000000..33a6c06
--- /dev/null
+++ b/webbrowser/base/content/padlock_mod_broken.png
diff --git a/webbrowser/base/content/padlock_mod_ev.png b/webbrowser/base/content/padlock_mod_ev.png
new file mode 100644
index 0000000..3dfdcbd
--- /dev/null
+++ b/webbrowser/base/content/padlock_mod_ev.png
diff --git a/webbrowser/base/content/padlock_mod_https.png b/webbrowser/base/content/padlock_mod_https.png
new file mode 100644
index 0000000..d494b42
--- /dev/null
+++ b/webbrowser/base/content/padlock_mod_https.png
diff --git a/webbrowser/base/content/padlock_mod_low.png b/webbrowser/base/content/padlock_mod_low.png
new file mode 100644
index 0000000..29179ef
--- /dev/null
+++ b/webbrowser/base/content/padlock_mod_low.png
diff --git a/webbrowser/base/content/palemoon.xhtml b/webbrowser/base/content/palemoon.xhtml
new file mode 100644
index 0000000..f145550
--- /dev/null
+++ b/webbrowser/base/content/palemoon.xhtml
@@ -0,0 +1,66 @@
+<!DOCTYPE html
+[
+  <!ENTITY % mozillaDTD SYSTEM "chrome://browser/locale/palemoon.dtd" >
+  %mozillaDTD;
+  <!ENTITY % directionDTD SYSTEM "chrome://global/locale/global.dtd" >
+  %directionDTD;
+]>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta charset='utf-8' />
+    <title>&chronicles.title.66.1;</title>
+
+<style type="text/css">
+html {
+  background: #333399 radial-gradient( circle at 75% 25%, #6666b0 0%, #333399 40%, #111177 80%) center center / cover no-repeat;
+  color: white;
+  font-style: italic;
+  text-rendering: optimizeLegibility;
+  min-height: 100%;
+}
+
+#moztext {
+  margin-top: 15%;
+  font-size: 1.1em;
+  font-family: serif;
+  text-align: center;
+  line-height: 1.5;
+}
+
+#from {
+  font-size: 1.95em;
+  font-family: serif;
+  text-align: right;
+}
+
+em {
+  font-size: 1.3em;
+  line-height: 0;
+}
+
+a {
+  text-decoration: none;
+  color: white;
+}
+</style>
+</head>
+
+<body dir="&locale.dir;">
+
+<section>
+  <p id="moztext">
+  &chronicles.quote.66.1;
+  </p>
+
+  <p id="from">
+  &chronicles.from.66.1;
+  </p>
+</section>
+
+</body>
+</html>
diff --git a/webbrowser/base/content/popup-notifications.inc b/webbrowser/base/content/popup-notifications.inc
new file mode 100644
index 0000000..31a72b4
--- /dev/null
+++ b/webbrowser/base/content/popup-notifications.inc
@@ -0,0 +1,104 @@
+# to be included inside a popupset element
+
+    <panel id="notification-popup"
+           type="arrow"
+           position="after_start"
+           hidden="true"
+           orient="vertical"
+           role="alert"/>
+
+    <!-- Popup for site identity information -->
+    <panel id="identity-popup"
+           type="arrow"
+           hidden="true"
+           noautofocus="true"
+           consumeoutsideclicks="true"
+           onpopupshown="gIdentityHandler.onPopupShown(event);"
+           level="top">
+      <hbox id="identity-popup-container" align="top">
+        <image id="identity-popup-icon"/>
+        <vbox id="identity-popup-content-box">
+          <label id="identity-popup-connectedToLabel"
+                 class="identity-popup-label"
+                 value="&identity.connectedTo;"/>
+          <label id="identity-popup-connectedToLabel2"
+                 class="identity-popup-label"
+                 value="&identity.unverifiedsite2;"/>
+          <description id="identity-popup-content-host"
+                       class="identity-popup-description"/>
+          <label id="identity-popup-runByLabel"
+                 class="identity-popup-label"
+                 value="&identity.runBy;"/>
+          <description id="identity-popup-content-owner"
+                       class="identity-popup-description"/>
+          <description id="identity-popup-content-supplemental"
+                       class="identity-popup-description"/>
+          <description id="identity-popup-content-verifier"
+                       class="identity-popup-description"/>
+          <hbox id="identity-popup-encryption" flex="1">
+            <vbox>
+              <image id="identity-popup-encryption-icon"/>
+            </vbox>
+            <description id="identity-popup-encryption-label" flex="1"
+                         class="identity-popup-description"/>
+          </hbox>
+          <!-- Footer button to open security page info -->
+          <hbox id="identity-popup-button-container" pack="end">
+            <button id="identity-popup-more-info-button"
+                    label="&identity.moreInfoLinkText;"
+                    onblur="gIdentityHandler.hideIdentityPopup();"
+                    oncommand="gIdentityHandler.handleMoreInfoClick(event);"/>
+          </hbox>
+        </vbox>
+      </hbox>
+    </panel>
+
+#ifdef MOZ_WEBRTC
+    <popupnotification id="webRTC-shareDevices-notification" hidden="true">
+      <popupnotificationcontent id="webRTC-selectCamera" orient="vertical">
+        <separator class="thin"/>
+        <label value="&getUserMedia.selectCamera.label;"
+               accesskey="&getUserMedia.selectCamera.accesskey;"
+               control="webRTC-selectCamera-menulist"/>
+        <menulist id="webRTC-selectCamera-menulist">
+          <menupopup id="webRTC-selectCamera-menupopup"/>
+        </menulist>
+      </popupnotificationcontent>
+      <popupnotificationcontent id="webRTC-selectMicrophone" orient="vertical">
+        <separator class="thin"/>
+        <label value="&getUserMedia.selectMicrophone.label;"
+               accesskey="&getUserMedia.selectMicrophone.accesskey;"
+               control="webRTC-selectMicrophone-menulist"/>
+        <menulist id="webRTC-selectMicrophone-menulist">
+          <menupopup id="webRTC-selectMicrophone-menupopup"/>
+        </menulist>
+      </popupnotificationcontent>
+    </popupnotification>
+#endif
+    <popupnotification id="servicesInstall-notification" hidden="true">
+      <popupnotificationcontent orient="vertical" align="start">
+        <!-- XXX bug 974146, tests are looking for this, can't remove yet. -->
+      </popupnotificationcontent>
+    </popupnotification>
+
+    <popupnotification id="pointerLock-notification" hidden="true">
+      <popupnotificationcontent orient="vertical" align="start">
+        <separator class="thin"/>
+        <label id="pointerLock-cancel" value="&pointerLock.notification.message;"/>
+      </popupnotificationcontent>
+    </popupnotification>
+
+    <popupnotification id="password-notification" hidden="true">
+      <popupnotificationcontent orient="vertical">
+        <textbox id="password-notification-username"/>
+        <textbox id="password-notification-password" type="password" show-content=""/>
+        <checkbox id="password-notification-visibilityToggle" hidden="true"/>
+      </popupnotificationcontent>
+    </popupnotification>
+
+    <popupnotification id="mixed-content-blocked-notification" hidden="true">
+      <popupnotificationcontent orient="vertical" align="start">
+        <separator/>
+        <description id="mixed-content-blocked-moreinfo">&mixedContentBlocked.moreinfo;</description>
+      </popupnotificationcontent>
+    </popupnotification>
diff --git a/webbrowser/base/content/safeMode.css b/webbrowser/base/content/safeMode.css
new file mode 100644
index 0000000..4f093a4
--- /dev/null
+++ b/webbrowser/base/content/safeMode.css
@@ -0,0 +1,8 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#resetProfileFooter {
+  font-weight: bold;
+}
+
diff --git a/webbrowser/base/content/safeMode.js b/webbrowser/base/content/safeMode.js
new file mode 100644
index 0000000..e1e5c72
--- /dev/null
+++ b/webbrowser/base/content/safeMode.js
@@ -0,0 +1,128 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const Cc = Components.classes,
+      Ci = Components.interfaces,
+      Cu = Components.utils;
+      
+Cu.import("resource://gre/modules/AddonManager.jsm");
+
+function restartApp() {
+  let appStartup = Cc["@mozilla.org/toolkit/app-startup;1"]
+                      .getService(Ci.nsIAppStartup);
+  appStartup.quit(Ci.nsIAppStartup.eForceQuit |  Ci.nsIAppStartup.eRestart);
+}
+
+function clearAllPrefs() {
+  var prefService = Cc["@mozilla.org/preferences-service;1"]
+                       .getService(Ci.nsIPrefService);
+  prefService.resetUserPrefs();
+
+  // Remove the pref-overrides dir, if it exists
+  try {
+    var fileLocator = Cc["@mozilla.org/file/directory_service;1"]
+                         .getService(Ci.nsIProperties);
+    const NS_APP_PREFS_OVERRIDE_DIR = "PrefDOverride";
+    var prefOverridesDir = fileLocator.get(NS_APP_PREFS_OVERRIDE_DIR,
+                                           Ci.nsIFile);
+    prefOverridesDir.remove(true);
+  } catch (ex) {
+    Components.utils.reportError(ex);
+  }
+}
+
+function restoreDefaultBookmarks() {
+  var prefBranch  = Cc["@mozilla.org/preferences-service;1"]
+                       .getService(Ci.nsIPrefBranch);
+  prefBranch.setBoolPref("browser.bookmarks.restore_default_bookmarks", true);
+}
+
+function deleteLocalstore() {
+  const nsIDirectoryServiceContractID = "@mozilla.org/file/directory_service;1";
+  const nsIProperties = Ci.nsIProperties;
+  var directoryService = Cc[nsIDirectoryServiceContractID]
+                            .getService(nsIProperties);
+  // Local store file
+  var localstoreFile = directoryService.get("LStoreS", Components.interfaces.nsIFile);
+  // XUL store file
+  var xulstoreFile = directoryService.get("ProfD", Components.interfaces.nsIFile);
+  xulstoreFile.append("xulstore.json");
+  try {
+    xulstoreFile.remove(false);
+    if (localstoreFile.exists()) {
+      localstoreFile.remove(false);
+    }
+  } catch(e) {
+    Components.utils.reportError(e);
+  }
+}
+
+function disableAddons() {
+  AddonManager.getAllAddons(function(aAddons) {
+    aAddons.forEach(function(aAddon) {
+      if (aAddon.type == "theme") {
+        // Setting userDisabled to false on the default theme activates it,
+        // disables all other themes and deactivates the applied persona, if
+        // any.
+        const DEFAULT_THEME_ID = "{972ce4c6-7e08-4474-a285-3208198ce6fd}";
+        if (aAddon.id == DEFAULT_THEME_ID)
+          aAddon.userDisabled = false;
+      }
+      else {
+        aAddon.userDisabled = true;
+      }
+    });
+
+    restartApp();
+  });
+}
+
+function restoreDefaultSearchEngines() {
+  var searchService = Cc["@mozilla.org/browser/search-service;1"]
+                         .getService(Ci.nsIBrowserSearchService);
+
+  searchService.restoreDefaultEngines();
+}
+
+function onOK() {
+  try {
+    if (document.getElementById("resetUserPrefs").checked)
+      clearAllPrefs();
+    if (document.getElementById("deleteBookmarks").checked)
+      restoreDefaultBookmarks();
+    if (document.getElementById("resetToolbars").checked)
+      deleteLocalstore();
+    if (document.getElementById("restoreSearch").checked)
+      restoreDefaultSearchEngines();
+    if (document.getElementById("disableAddons").checked) {
+      disableAddons();
+      // disableAddons will asynchronously restart the application
+      return false;
+    }
+  } catch(e) {
+  }
+
+  restartApp();
+  return false;
+}
+
+function onCancel() {
+  let appStartup = Cc["@mozilla.org/toolkit/app-startup;1"]
+                      .getService(Ci.nsIAppStartup);
+  appStartup.quit(Ci.nsIAppStartup.eForceQuit);
+}
+
+function onLoad() {
+  document.getElementById("tasks")
+          .addEventListener("CheckboxStateChange", UpdateOKButtonState, false);
+}
+
+function UpdateOKButtonState() {
+  document.documentElement.getButton("accept").disabled = 
+    !document.getElementById("resetUserPrefs").checked &&
+    !document.getElementById("deleteBookmarks").checked &&
+    !document.getElementById("resetToolbars").checked &&
+    !document.getElementById("disableAddons").checked &&
+    !document.getElementById("restoreSearch").checked;
+}
diff --git a/webbrowser/base/content/safeMode.xul b/webbrowser/base/content/safeMode.xul
new file mode 100644
index 0000000..656df6e
--- /dev/null
+++ b/webbrowser/base/content/safeMode.xul
@@ -0,0 +1,55 @@
+<?xml version="1.0"?>
+
+<!--
+This Source Code Form is subject to the terms of the Mozilla Public
+License, v. 2.0. If a copy of the MPL was not distributed with this
+file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<!DOCTYPE prefwindow [
+<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
+%brandDTD;
+<!ENTITY % safeModeDTD SYSTEM "chrome://browser/locale/safeMode.dtd" >
+%safeModeDTD;
+<!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd" >
+%browserDTD;
+]>
+
+<?xml-stylesheet href="chrome://global/skin/"?>
+
+<dialog id="safeModeDialog"
+            xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+            title="&safeModeDialog.title;"
+            buttons="accept,cancel,extra1"
+            buttonlabelaccept="&changeAndRestartButton.label;"
+#ifdef XP_WIN
+            buttonlabelcancel="&quitApplicationCmdWin.label;"
+#else
+            buttonlabelcancel="&quitApplicationCmd.label;"
+#endif
+            buttonlabelextra1="&continueButton.label;"
+            width="&window.width;"
+            ondialogaccept="return onOK()"
+            ondialogcancel="onCancel()"
+            ondialogextra1="window.close()"
+            onload="onLoad();"
+            buttondisabledaccept="true">
+
+  <script type="application/javascript" src="chrome://browser/content/safeMode.js"/>
+
+  <stringbundle id="preferencesBundle" src="chrome://browser/locale/preferences/preferences.properties"/>
+
+  <description>&safeModeDescription.label;</description>
+
+  <separator class="thin"/>
+
+  <label value="&safeModeDescription2.label;"/>
+  <vbox id="tasks">
+    <checkbox id="disableAddons"  label="&disableAddons.label;"  accesskey="&disableAddons.accesskey;"/>
+    <checkbox id="resetToolbars"  label="&resetToolbars.label;"  accesskey="&resetToolbars.accesskey;"/>
+    <checkbox id="deleteBookmarks" label="&deleteBookmarks.label;" accesskey="&deleteBookmarks.accesskey;"/>
+    <checkbox id="resetUserPrefs" label="&resetUserPrefs.label;" accesskey="&resetUserPrefs.accesskey;"/>
+    <checkbox id="restoreSearch"  label="&restoreSearch.label;"  accesskey="&restoreSearch.accesskey;"/>
+  </vbox>
+     
+  <separator class="thin"/>
+</dialog>
diff --git a/webbrowser/base/content/sanitize.js b/webbrowser/base/content/sanitize.js
new file mode 100644
index 0000000..b4d13d8
--- /dev/null
+++ b/webbrowser/base/content/sanitize.js
@@ -0,0 +1,534 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
+                                  "resource://gre/modules/PlacesUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "FormHistory",
+                                  "resource://gre/modules/FormHistory.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Downloads",
+                                  "resource://gre/modules/Downloads.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Promise",
+                                  "resource://gre/modules/Promise.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "Task",
+                                  "resource://gre/modules/Task.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "console",
+                                  "resource://gre/modules/Console.jsm");
+
+function Sanitizer() {}
+Sanitizer.prototype = {
+  // warning to the caller: this one may raise an exception (e.g. bug #265028)
+  clearItem: function (aItemName)
+  {
+    if (this.items[aItemName].canClear)
+      this.items[aItemName].clear();
+  },
+
+  canClearItem: function (aItemName, aCallback, aArg)
+  {
+    let canClear = this.items[aItemName].canClear;
+    if (typeof canClear == "function") {
+      canClear(aCallback, aArg);
+      return false;
+    }
+
+    aCallback(aItemName, canClear, aArg);
+    return canClear;
+  },
+  
+  prefDomain: "",
+  isShutDown: false,
+  
+  getNameFromPreference: function (aPreferenceName)
+  {
+    return aPreferenceName.substr(this.prefDomain.length);
+  },
+  
+  /**
+   * Deletes privacy sensitive data in a batch, according to user preferences.
+   * Returns a promise which is resolved if no errors occurred.  If an error
+   * occurs, a message is reported to the console and all other items are still
+   * cleared before the promise is finally rejected.
+   */
+  sanitize: function ()
+  {
+    var deferred = Promise.defer();
+    var psvc = Components.classes["@mozilla.org/preferences-service;1"]
+                         .getService(Components.interfaces.nsIPrefService);
+    var branch = psvc.getBranch(this.prefDomain);
+    var seenError = false;
+
+    // Cache the range of times to clear
+    if (this.ignoreTimespan)
+      var range = null;  // If we ignore timespan, clear everything
+    else
+      range = this.range || Sanitizer.getClearRange();
+
+    let itemCount = Object.keys(this.items).length;
+    let onItemComplete = function() {
+      if (!--itemCount) {
+        seenError ? deferred.reject() : deferred.resolve();
+      }
+    };
+    for (var itemName in this.items) {
+      let item = this.items[itemName];
+      item.range = range;
+      item.isShutDown = this.isShutDown;
+      if ("clear" in item && branch.getBoolPref(itemName)) {
+        let clearCallback = (itemName, aCanClear) => {
+          // Some of these clear() may raise exceptions (see bug #265028)
+          // to sanitize as much as possible, we catch and store them,
+          // rather than fail fast.
+          // Callers should check returned errors and give user feedback
+          // about items that could not be sanitized
+          let item = this.items[itemName];
+          try {
+            if (aCanClear)
+              item.clear();
+          } catch(er) {
+            seenError = true;
+            console.error("Error sanitizing " + itemName + ": " + er + "\n");
+          }
+          onItemComplete();
+        };
+        this.canClearItem(itemName, clearCallback);
+      } else {
+        onItemComplete();
+      }
+    }
+
+    return deferred.promise;
+  },
+  
+  // Time span only makes sense in certain cases.  Consumers who want
+  // to only clear some private data can opt in by setting this to false,
+  // and can optionally specify a specific range.  If timespan is not ignored,
+  // and range is not set, sanitize() will use the value of the timespan
+  // pref to determine a range
+  ignoreTimespan : true,
+  range : null,
+
+  items: {
+    cache: {
+      clear: function ()
+      {
+        var cache = Cc["@mozilla.org/netwerk/cache-storage-service;1"].
+                    getService(Ci.nsICacheStorageService);
+        try {
+          // Cache doesn't consult timespan, nor does it have the
+          // facility for timespan-based eviction.  Wipe it.
+          cache.clear();
+        } catch(er) {}
+
+        var imageCache = Cc["@mozilla.org/image/tools;1"].
+                         getService(Ci.imgITools).getImgCacheForDocument(null);
+        try {
+          imageCache.clearCache(false); // true=chrome, false=content
+        } catch(er) {}
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    },
+
+    cookies: {
+      clear: function ()
+      {
+        var cookieMgr = Components.classes["@mozilla.org/cookiemanager;1"]
+                                  .getService(Ci.nsICookieManager);
+        if (this.range) {
+          // Iterate through the cookies and delete any created after our cutoff.
+          var cookiesEnum = cookieMgr.enumerator;
+          while (cookiesEnum.hasMoreElements()) {
+            var cookie = cookiesEnum.getNext().QueryInterface(Ci.nsICookie2);
+
+            if (cookie.creationTime > this.range[0])
+              // This cookie was created after our cutoff, clear it
+              cookieMgr.remove(cookie.host, cookie.name, cookie.path,
+                               false, cookie.originAttributes);
+          }
+        }
+        else {
+          // Remove everything
+          cookieMgr.removeAll();
+        }
+
+        // Clear plugin data.
+        const phInterface = Ci.nsIPluginHost;
+        const FLAG_CLEAR_ALL = phInterface.FLAG_CLEAR_ALL;
+        let ph = Cc["@mozilla.org/plugin/host;1"].getService(phInterface);
+
+        // Determine age range in seconds. (-1 means clear all.) We don't know
+        // that this.range[1] is actually now, so we compute age range based
+        // on the lower bound. If this.range results in a negative age, do
+        // nothing.
+        let age = this.range ? (Date.now() / 1000 - this.range[0] / 1000000)
+                             : -1;
+        if (!this.range || age >= 0) {
+          let tags = ph.getPluginTags();
+          for (let i = 0; i < tags.length; i++) {
+            try {
+              ph.clearSiteData(tags[i], null, FLAG_CLEAR_ALL, age);
+            } catch (e) {
+              // If the plugin doesn't support clearing by age, clear everything.
+              if (e.result == Components.results.
+                    NS_ERROR_PLUGIN_TIME_RANGE_NOT_SUPPORTED) {
+                try {
+                  ph.clearSiteData(tags[i], null, FLAG_CLEAR_ALL, -1);
+                } catch (e) {
+                  // Ignore errors from the plugin
+                }
+              }
+            }
+          }
+        }
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    },
+
+    offlineApps: {
+      clear: function ()
+      {
+        Components.utils.import("resource:///modules/offlineAppCache.jsm");
+        OfflineAppCacheHelper.clear();
+        if (!this.range || this.isShutDown) {
+          Components.utils.import("resource:///modules/QuotaManager.jsm");
+          QuotaManagerHelper.clear(this.isShutDown);
+        }
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    },
+
+    history: {
+      clear: function ()
+      {
+        if (this.range) {
+          PlacesUtils.history.removeVisitsByFilter({
+            beginDate: new Date(this.range[0] / 1000),
+            endDate: new Date(this.range[1] / 1000)
+          }).catch(Components.utils.reportError);;
+        } else {
+          // Remove everything.
+          PlacesUtils.history.clear()
+          .catch(Components.utils.reportError);
+        }
+
+        try {
+          var os = Components.classes["@mozilla.org/observer-service;1"]
+                             .getService(Components.interfaces.nsIObserverService);
+          os.notifyObservers(null, "browser:purge-session-history", "");
+        }
+        catch (e) { }
+
+        // Clear last URL of the Open Web Location dialog
+        var prefs = Components.classes["@mozilla.org/preferences-service;1"]
+                              .getService(Components.interfaces.nsIPrefBranch);
+        try {
+          prefs.clearUserPref("general.open_location.last_url");
+        }
+        catch (e) { }
+      },
+
+      get canClear()
+      {
+        // bug 347231: Always allow clearing history due to dependencies on
+        // the browser:purge-session-history notification. (like error console)
+        return true;
+      }
+    },
+
+    formdata: {
+      clear: function ()
+      {
+        // Clear undo history of all searchBars
+        var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1']
+                                      .getService(Components.interfaces.nsIWindowMediator);
+        var windows = windowManager.getEnumerator("navigator:browser");
+        while (windows.hasMoreElements()) {
+          let currentDocument = windows.getNext().document;
+          let searchBar = currentDocument.getElementById("searchbar");
+          if (searchBar)
+            searchBar.textbox.reset();
+          let findBar = currentDocument.getElementById("FindToolbar");
+          if (findBar)
+            findBar.clear();
+        }
+
+        let change = { op: "remove" };
+        if (this.range) {
+          [ change.firstUsedStart, change.firstUsedEnd ] = this.range;
+        }
+        FormHistory.update(change);
+      },
+
+      canClear : function(aCallback, aArg)
+      {
+        var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1']
+                                      .getService(Components.interfaces.nsIWindowMediator);
+        var windows = windowManager.getEnumerator("navigator:browser");
+        while (windows.hasMoreElements()) {
+          let currentDocument = windows.getNext().document;
+          let searchBar = currentDocument.getElementById("searchbar");
+          if (searchBar) {
+            let transactionMgr = searchBar.textbox.editor.transactionManager;
+            if (searchBar.value ||
+                transactionMgr.numberOfUndoItems ||
+                transactionMgr.numberOfRedoItems) {
+              aCallback("formdata", true, aArg);
+              return false;
+            }
+          }
+          let findBar = currentDocument.getElementById("FindToolbar");
+          if (findBar && findBar.canClear) {
+            aCallback("formdata", true, aArg);
+            return false;
+          }
+        }
+
+        let count = 0;
+        let countDone = {
+          handleResult : function(aResult) count = aResult,
+          handleError : function(aError) Components.utils.reportError(aError),
+          handleCompletion :
+            function(aReason) { aCallback("formdata", aReason == 0 && count > 0, aArg); }
+        };
+        FormHistory.count({}, countDone);
+        return false;
+      }
+    },
+
+    downloads: {
+      clear: Task.async(function* (range) {
+        let refObj = {};
+        try {
+          let filterByTime = null;
+          if (range) {
+            // Convert microseconds back to milliseconds for date comparisons.
+            let rangeBeginMs = range[0] / 1000;
+            let rangeEndMs = range[1] / 1000;
+            filterByTime = download => download.startTime >= rangeBeginMs &&
+                                       download.startTime <= rangeEndMs;
+          }
+
+          // Clear all completed/cancelled downloads
+          let list = yield Downloads.getList(Downloads.ALL);
+          list.removeFinished(filterByTime);
+        } finally {}
+      }),
+
+      get canClear()
+      {
+        //Clearing is always possible with JSTransfers
+        return true;
+      }
+    },
+
+    passwords: {
+      clear: function ()
+      {
+        var pwmgr = Components.classes["@mozilla.org/login-manager;1"]
+                              .getService(Components.interfaces.nsILoginManager);
+        // Passwords are timeless, and don't respect the timeSpan setting
+        pwmgr.removeAllLogins();
+      },
+
+      get canClear()
+      {
+        var pwmgr = Components.classes["@mozilla.org/login-manager;1"]
+                              .getService(Components.interfaces.nsILoginManager);
+        var count = pwmgr.countLogins("", "", ""); // count all logins
+        return (count > 0);
+      }
+    },
+
+    sessions: {
+      clear: function ()
+      {
+        // clear all auth tokens
+        var sdr = Components.classes["@mozilla.org/security/sdr;1"]
+                            .getService(Components.interfaces.nsISecretDecoderRing);
+        sdr.logoutAndTeardown();
+
+        // clear FTP and plain HTTP auth sessions
+        var os = Components.classes["@mozilla.org/observer-service;1"]
+                           .getService(Components.interfaces.nsIObserverService);
+        os.notifyObservers(null, "net:clear-active-logins", null);
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    },
+
+    siteSettings: {
+      clear: function ()
+      {
+        // Clear site-specific permissions like "Allow this site to open popups"
+        var pm = Components.classes["@mozilla.org/permissionmanager;1"]
+                           .getService(Components.interfaces.nsIPermissionManager);
+        pm.removeAll();
+
+        // Clear site-specific settings like page-zoom level
+        var cps = Components.classes["@mozilla.org/content-pref/service;1"]
+                            .getService(Components.interfaces.nsIContentPrefService2);
+        cps.removeAllDomains(null);
+
+        // Clear "Never remember passwords for this site", which is not handled by
+        // the permission manager
+        var pwmgr = Components.classes["@mozilla.org/login-manager;1"]
+                              .getService(Components.interfaces.nsILoginManager);
+        var hosts = pwmgr.getAllDisabledHosts();
+        for each (var host in hosts) {
+          pwmgr.setLoginSavingEnabled(host, true);
+        }
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    },
+
+    connectivityData: {
+      clear: function ()
+      {
+        // Clear site security settings
+        var sss = Components.classes["@mozilla.org/ssservice;1"]
+                            .getService(Components.interfaces.nsISiteSecurityService);
+        sss.clearAll();
+      },
+
+      get canClear()
+      {
+        return true;
+      }
+    }
+  }
+};
+
+
+
+// "Static" members
+Sanitizer.prefDomain          = "privacy.sanitize.";
+Sanitizer.prefShutdown        = "sanitizeOnShutdown";
+Sanitizer.prefDidShutdown     = "didShutdownSanitize";
+
+// Time span constants corresponding to values of the privacy.sanitize.timeSpan
+// pref.  Used to determine how much history to clear, for various items
+Sanitizer.TIMESPAN_EVERYTHING = 0;
+Sanitizer.TIMESPAN_HOUR       = 1;
+Sanitizer.TIMESPAN_2HOURS     = 2;
+Sanitizer.TIMESPAN_4HOURS     = 3;
+Sanitizer.TIMESPAN_TODAY      = 4;
+
+Sanitizer.IS_SHUTDOWN         = true;
+
+// Return a 2 element array representing the start and end times,
+// in the uSec-since-epoch format that PRTime likes.  If we should
+// clear everything, return null.  Use ts if it is defined; otherwise
+// use the timeSpan pref.
+Sanitizer.getClearRange = function (ts) {
+  if (ts === undefined)
+    ts = Sanitizer.prefs.getIntPref("timeSpan");
+  if (ts === Sanitizer.TIMESPAN_EVERYTHING)
+    return null;
+  
+  // PRTime is microseconds while JS time is milliseconds
+  var endDate = Date.now() * 1000;
+  switch (ts) {
+    case Sanitizer.TIMESPAN_HOUR :
+      var startDate = endDate - 3600000000; // 1*60*60*1000000
+      break;
+    case Sanitizer.TIMESPAN_2HOURS :
+      startDate = endDate - 7200000000; // 2*60*60*1000000
+      break;
+    case Sanitizer.TIMESPAN_4HOURS :
+      startDate = endDate - 14400000000; // 4*60*60*1000000
+      break;
+    case Sanitizer.TIMESPAN_TODAY :
+      var d = new Date();  // Start with today
+      d.setHours(0);      // zero us back to midnight...
+      d.setMinutes(0);
+      d.setSeconds(0);
+      startDate = d.valueOf() * 1000; // convert to epoch usec
+      break;
+    default:
+      throw "Invalid time span for clear private data: " + ts;
+  }
+  return [startDate, endDate];
+};
+
+Sanitizer._prefs = null;
+Sanitizer.__defineGetter__("prefs", function() 
+{
+  return Sanitizer._prefs ? Sanitizer._prefs
+    : Sanitizer._prefs = Components.classes["@mozilla.org/preferences-service;1"]
+                         .getService(Components.interfaces.nsIPrefService)
+                         .getBranch(Sanitizer.prefDomain);
+});
+
+// Shows sanitization UI
+Sanitizer.showUI = function(aParentWindow) 
+{
+  var ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
+                     .getService(Components.interfaces.nsIWindowWatcher);
+#ifdef XP_MACOSX
+  ww.openWindow(null, // make this an app-modal window on Mac
+#else
+  ww.openWindow(aParentWindow,
+#endif
+                "chrome://browser/content/sanitize.xul",
+                "Sanitize",
+                "chrome,titlebar,dialog,centerscreen,modal",
+                null);
+};
+
+/** 
+ * Deletes privacy sensitive data in a batch, optionally showing the 
+ * sanitize UI, according to user preferences
+ */
+Sanitizer.sanitize = function(aParentWindow) 
+{
+  Sanitizer.showUI(aParentWindow);
+};
+
+Sanitizer.onStartup = function() 
+{
+  // we check for unclean exit with pending sanitization
+  Sanitizer._checkAndSanitize();
+};
+
+Sanitizer.onShutdown = function() 
+{
+  // we check if sanitization is needed and perform it
+  Sanitizer._checkAndSanitize(Sanitizer.IS_SHUTDOWN);
+};
+
+// this is called on startup and shutdown, to perform pending sanitizations
+Sanitizer._checkAndSanitize = function(isShutDown) 
+{
+  const prefs = Sanitizer.prefs;
+  if (prefs.getBoolPref(Sanitizer.prefShutdown) && 
+      !prefs.prefHasUserValue(Sanitizer.prefDidShutdown)) {
+    // this is a shutdown or a startup after an unclean exit
+    var s = new Sanitizer();
+    s.prefDomain = "privacy.clearOnShutdown.";
+    s.isShutDown = isShutDown;
+    s.sanitize().then(function() {
+      prefs.setBoolPref(Sanitizer.prefDidShutdown, true);
+    });
+  }
+};
diff --git a/webbrowser/base/content/sanitize.xul b/webbrowser/base/content/sanitize.xul
new file mode 100644
index 0000000..691be92
--- /dev/null
+++ b/webbrowser/base/content/sanitize.xul
@@ -0,0 +1,190 @@
+<?xml version="1.0"?>
+
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xml-stylesheet href="chrome://global/skin/"?>
+<?xml-stylesheet href="chrome://browser/skin/sanitizeDialog.css"?>
+
+#ifdef CRH_DIALOG_TREE_VIEW
+<?xml-stylesheet href="chrome://browser/skin/places/places.css"?>
+#endif
+
+<?xml-stylesheet href="chrome://browser/content/sanitizeDialog.css"?>
+
+<!DOCTYPE prefwindow [
+  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd">
+  <!ENTITY % sanitizeDTD SYSTEM "chrome://browser/locale/sanitize.dtd">
+  %brandDTD;
+  %sanitizeDTD;
+]>
+
+<prefwindow id="SanitizeDialog" type="child"
+            xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+            dlgbuttons="accept,cancel"
+            title="&sanitizeDialog2.title;"
+            noneverythingtitle="&sanitizeDialog2.title;"
+            style="width: &dialog.width2;;"
+            ondialogaccept="return gSanitizePromptDialog.sanitize();">
+
+  <prefpane id="SanitizeDialogPane" onpaneload="gSanitizePromptDialog.init();">
+    <stringbundle id="bundleBrowser"
+                  src="chrome://browser/locale/browser.properties"/>
+
+    <script type="application/javascript"
+            src="chrome://browser/content/sanitize.js"/>
+
+#ifdef CRH_DIALOG_TREE_VIEW
+    <script type="application/javascript"
+            src="chrome://global/content/globalOverlay.js"/>
+    <script type="application/javascript"
+            src="chrome://browser/content/places/treeView.js"/>
+    <script type="application/javascript"><![CDATA[
+      Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
+      Components.utils.import("resource:///modules/PlacesUIUtils.jsm");
+    ]]></script>
+#endif
+
+    <script type="application/javascript"
+            src="chrome://browser/content/sanitizeDialog.js"/>
+
+    <preferences id="sanitizePreferences">
+      <preference id="privacy.cpd.history"               name="privacy.cpd.history"               type="bool"/>
+      <preference id="privacy.cpd.formdata"              name="privacy.cpd.formdata"              type="bool"/>
+      <preference id="privacy.cpd.downloads"             name="privacy.cpd.downloads"             type="bool" disabled="true"/>
+      <preference id="privacy.cpd.cookies"               name="privacy.cpd.cookies"               type="bool"/>
+      <preference id="privacy.cpd.cache"                 name="privacy.cpd.cache"                 type="bool"/>
+      <preference id="privacy.cpd.sessions"              name="privacy.cpd.sessions"              type="bool"/>
+      <preference id="privacy.cpd.offlineApps"           name="privacy.cpd.offlineApps"           type="bool"/>
+      <preference id="privacy.cpd.siteSettings"          name="privacy.cpd.siteSettings"          type="bool"/>
+      <preference id="privacy.cpd.connectivityData"      name="privacy.cpd.connectivityData"      type="bool"/>
+    </preferences>
+    
+    <preferences id="nonItemPreferences">
+      <preference id="privacy.sanitize.timeSpan"
+                  name="privacy.sanitize.timeSpan"
+                  type="int"/>
+    </preferences>
+
+    <hbox id="SanitizeDurationBox" align="center">
+      <label value="&clearTimeDuration.label;"
+             accesskey="&clearTimeDuration.accesskey;"
+             control="sanitizeDurationChoice"
+             id="sanitizeDurationLabel"/>
+      <menulist id="sanitizeDurationChoice"
+                preference="privacy.sanitize.timeSpan"
+                onselect="gSanitizePromptDialog.selectByTimespan();"
+                flex="1">
+        <menupopup id="sanitizeDurationPopup">
+#ifdef CRH_DIALOG_TREE_VIEW
+          <menuitem label="" value="-1" id="sanitizeDurationCustom"/>
+#endif
+          <menuitem label="&clearTimeDuration.lastHour;" value="1"/>
+          <menuitem label="&clearTimeDuration.last2Hours;" value="2"/>
+          <menuitem label="&clearTimeDuration.last4Hours;" value="3"/>
+          <menuitem label="&clearTimeDuration.today;" value="4"/>
+          <menuseparator/>
+          <menuitem label="&clearTimeDuration.everything;" value="0"/>
+        </menupopup>
+      </menulist>
+      <label id="sanitizeDurationSuffixLabel"
+             value="&clearTimeDuration.suffix;"/>
+    </hbox>
+
+    <separator class="thin"/>
+
+#ifdef CRH_DIALOG_TREE_VIEW
+    <deck id="durationDeck">
+      <tree id="placesTree" flex="1" hidecolumnpicker="true" rows="10"
+            disabled="true" disableKeyNavigation="true">
+        <treecols>
+          <treecol id="date" label="&clearTimeDuration.dateColumn;" flex="1"/>
+          <splitter class="tree-splitter"/>
+          <treecol id="title" label="&clearTimeDuration.nameColumn;" flex="5"/>
+        </treecols>
+        <treechildren id="placesTreechildren"
+                      ondragstart="gSanitizePromptDialog.grippyMoved('ondragstart', event);"
+                      ondragover="gSanitizePromptDialog.grippyMoved('ondragover', event);"
+                      onkeypress="gSanitizePromptDialog.grippyMoved('onkeypress', event);"
+                      onmousedown="gSanitizePromptDialog.grippyMoved('onmousedown', event);"/>
+      </tree>
+#endif
+
+      <vbox id="sanitizeEverythingWarningBox">
+        <spacer flex="1"/>
+        <hbox align="center">
+          <image id="sanitizeEverythingWarningIcon"/>
+          <vbox id="sanitizeEverythingWarningDescBox" flex="1">
+            <description id="sanitizeEverythingWarning"/>
+            <description id="sanitizeEverythingUndoWarning">&sanitizeEverythingUndoWarning;</description>
+          </vbox>
+        </hbox>
+        <spacer flex="1"/>
+      </vbox>
+
+#ifdef CRH_DIALOG_TREE_VIEW
+    </deck>
+#endif
+
+    <separator class="thin"/>
+
+    <hbox id="detailsExpanderWrapper" align="center">
+      <button type="image"
+              id="detailsExpander"
+              class="expander-down"
+              persist="class"
+              oncommand="gSanitizePromptDialog.toggleItemList();"/>
+      <label id="detailsExpanderLabel"
+             value="&detailsProgressiveDisclosure.label;"
+             accesskey="&detailsProgressiveDisclosure.accesskey;"
+             control="detailsExpander"/>
+    </hbox>
+    <listbox id="itemList" rows="8" collapsed="true" persist="collapsed">
+      <listitem label="&itemHistoryAndDownloads.label;"
+                type="checkbox"
+                accesskey="&itemHistoryAndDownloads.accesskey;"
+                preference="privacy.cpd.history"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemFormSearchHistory.label;"
+                type="checkbox"
+                accesskey="&itemFormSearchHistory.accesskey;"
+                preference="privacy.cpd.formdata"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemCookies.label;"
+                type="checkbox"
+                accesskey="&itemCookies.accesskey;"
+                preference="privacy.cpd.cookies"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemCache.label;"
+                type="checkbox"
+                accesskey="&itemCache.accesskey;"
+                preference="privacy.cpd.cache"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemActiveLogins.label;"
+                type="checkbox"
+                accesskey="&itemActiveLogins.accesskey;"
+                preference="privacy.cpd.sessions"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemOfflineApps.label;"
+                type="checkbox"
+                accesskey="&itemOfflineApps.accesskey;"
+                preference="privacy.cpd.offlineApps"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemSitePreferences.label;"
+                type="checkbox"
+                accesskey="&itemSitePreferences.accesskey;"
+                preference="privacy.cpd.siteSettings"
+                noduration="true"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+      <listitem label="&itemConnectivityData.label;"
+                type="checkbox"
+                accesskey="&itemConnectivityData.accesskey;"
+                preference="privacy.cpd.connectivityData"
+                noduration="true"
+                onsyncfrompreference="return gSanitizePromptDialog.onReadGeneric();"/>
+    </listbox>
+
+  </prefpane>
+</prefwindow>
diff --git a/webbrowser/base/content/sanitizeDialog.css b/webbrowser/base/content/sanitizeDialog.css
new file mode 100644
index 0000000..27c3c08
--- /dev/null
+++ b/webbrowser/base/content/sanitizeDialog.css
@@ -0,0 +1,23 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Places tree */
+
+#placesTreechildren {
+  -moz-user-focus: normal;
+}
+
+#placesTreechildren::-moz-tree-cell(grippyRow),
+#placesTreechildren::-moz-tree-cell-text(grippyRow),
+#placesTreechildren::-moz-tree-image(grippyRow) {
+  cursor: -moz-grab;
+}
+
+
+/* Sanitize everything warnings */
+
+#sanitizeEverythingWarning,
+#sanitizeEverythingUndoWarning {
+  white-space: pre-wrap;
+}
diff --git a/webbrowser/base/content/sanitizeDialog.js b/webbrowser/base/content/sanitizeDialog.js
new file mode 100644
index 0000000..7861132
--- /dev/null
+++ b/webbrowser/base/content/sanitizeDialog.js
@@ -0,0 +1,910 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+
+var gSanitizePromptDialog = {
+
+  get bundleBrowser()
+  {
+    if (!this._bundleBrowser)
+      this._bundleBrowser = document.getElementById("bundleBrowser");
+    return this._bundleBrowser;
+  },
+
+  get selectedTimespan()
+  {
+    var durList = document.getElementById("sanitizeDurationChoice");
+    return parseInt(durList.value);
+  },
+
+  get sanitizePreferences()
+  {
+    if (!this._sanitizePreferences) {
+      this._sanitizePreferences =
+        document.getElementById("sanitizePreferences");
+    }
+    return this._sanitizePreferences;
+  },
+
+  get warningBox()
+  {
+    return document.getElementById("sanitizeEverythingWarningBox");
+  },
+
+  init: function ()
+  {
+    // This is used by selectByTimespan() to determine if the window has loaded.
+    this._inited = true;
+
+    var s = new Sanitizer();
+    s.prefDomain = "privacy.cpd.";
+
+    let sanitizeItemList = document.querySelectorAll("#itemList > [preference]");
+    for (let i = 0; i < sanitizeItemList.length; i++) {
+      let prefItem = sanitizeItemList[i];
+      let name = s.getNameFromPreference(prefItem.getAttribute("preference"));
+      s.canClearItem(name, function canClearCallback(aItem, aCanClear, aPrefItem) {
+        if (!aCanClear) {
+          aPrefItem.preference = null;
+          aPrefItem.checked = false;
+          aPrefItem.disabled = true;
+        }
+      }, prefItem);
+    }
+
+    document.documentElement.getButton("accept").label =
+      this.bundleBrowser.getString("sanitizeButtonOK");
+
+    if (this.selectedTimespan === Sanitizer.TIMESPAN_EVERYTHING) {
+      this.prepareWarning();
+      this.warningBox.hidden = false;
+      document.title =
+        this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+    }
+    else
+      this.warningBox.hidden = true;
+  },
+
+  selectByTimespan: function ()
+  {
+    // This method is the onselect handler for the duration dropdown.  As a
+    // result it's called a couple of times before onload calls init().
+    if (!this._inited)
+      return;
+
+    var warningBox = this.warningBox;
+
+    // If clearing everything
+    if (this.selectedTimespan === Sanitizer.TIMESPAN_EVERYTHING) {
+      this.prepareWarning();
+      if (warningBox.hidden) {
+        warningBox.hidden = false;
+        window.resizeBy(0, warningBox.boxObject.height);
+      }
+      window.document.title =
+        this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+      return;
+    }
+
+    // If clearing a specific time range
+    if (!warningBox.hidden) {
+      window.resizeBy(0, -warningBox.boxObject.height);
+      warningBox.hidden = true;
+    }
+    window.document.title =
+      window.document.documentElement.getAttribute("noneverythingtitle");
+  },
+
+  sanitize: function ()
+  {
+    // Update pref values before handing off to the sanitizer (bug 453440)
+    this.updatePrefs();
+    var s = new Sanitizer();
+    s.prefDomain = "privacy.cpd.";
+
+    s.range = Sanitizer.getClearRange(this.selectedTimespan);
+    s.ignoreTimespan = !s.range;
+
+    // As the sanitize is async, we disable the buttons, update the label on
+    // the 'accept' button to indicate things are happening and return false -
+    // once the async operation completes (either with or without errors)
+    // we close the window.
+    let docElt = document.documentElement;
+    let acceptButton = docElt.getButton("accept");
+    acceptButton.disabled = true;
+    acceptButton.setAttribute("label",
+                              this.bundleBrowser.getString("sanitizeButtonClearing"));
+    docElt.getButton("cancel").disabled = true;
+    try {
+      s.sanitize().then(window.close, window.close);
+    } catch (er) {
+      Components.utils.reportError("Exception during sanitize: " + er);
+      return true; // We *do* want to close immediately on error.
+    }
+    return false;
+  },
+
+  /**
+   * If the panel that displays a warning when the duration is "Everything" is
+   * not set up, sets it up.  Otherwise does nothing.
+   *
+   * @param aDontShowItemList Whether only the warning message should be updated.
+   *                          True means the item list visibility status should not
+   *                          be changed.
+   */
+  prepareWarning: function (aDontShowItemList) {
+    // If the date and time-aware locale warning string is ever used again,
+    // initialize it here.  Currently we use the no-visits warning string,
+    // which does not include date and time.  See bug 480169 comment 48.
+
+    var warningStringID;
+    if (this.hasNonSelectedItems()) {
+      warningStringID = "sanitizeSelectedWarning";
+      if (!aDontShowItemList)
+        this.showItemList();
+    }
+    else {
+      warningStringID = "sanitizeEverythingWarning2";
+    }
+
+    var warningDesc = document.getElementById("sanitizeEverythingWarning");
+    warningDesc.textContent =
+      this.bundleBrowser.getString(warningStringID);
+  },
+
+  /**
+   * Called when the value of a preference element is synced from the actual
+   * pref.  Enables or disables the OK button appropriately.
+   */
+  onReadGeneric: function ()
+  {
+    var found = false;
+
+    // Find any other pref that's checked and enabled.
+    var i = 0;
+    while (!found && i < this.sanitizePreferences.childNodes.length) {
+      var preference = this.sanitizePreferences.childNodes[i];
+
+      found = !!preference.value &&
+              !preference.disabled;
+      i++;
+    }
+
+    try {
+      document.documentElement.getButton("accept").disabled = !found;
+    }
+    catch (e) { }
+
+    // Update the warning prompt if needed
+    this.prepareWarning(true);
+
+    return undefined;
+  },
+
+  /**
+   * Sanitizer.prototype.sanitize() requires the prefs to be up-to-date.
+   * Because the type of this prefwindow is "child" -- and that's needed because
+   * without it the dialog has no OK and Cancel buttons -- the prefs are not
+   * updated on dialogaccept on platforms that don't support instant-apply
+   * (i.e., Windows).  We must therefore manually set the prefs from their
+   * corresponding preference elements.
+   */
+  updatePrefs : function ()
+  {
+    var tsPref = document.getElementById("privacy.sanitize.timeSpan");
+    Sanitizer.prefs.setIntPref("timeSpan", this.selectedTimespan);
+
+    // Keep the pref for the download history in sync with the history pref.
+    document.getElementById("privacy.cpd.downloads").value =
+      document.getElementById("privacy.cpd.history").value;
+
+    // Now manually set the prefs from their corresponding preference
+    // elements.
+    var prefs = this.sanitizePreferences.rootBranch;
+    for (let i = 0; i < this.sanitizePreferences.childNodes.length; ++i) {
+      var p = this.sanitizePreferences.childNodes[i];
+      prefs.setBoolPref(p.name, p.value);
+    }
+  },
+
+  /**
+   * Check if all of the history items have been selected like the default status.
+   */
+  hasNonSelectedItems: function () {
+    let checkboxes = document.querySelectorAll("#itemList > [preference]");
+    for (let i = 0; i < checkboxes.length; ++i) {
+      let pref = document.getElementById(checkboxes[i].getAttribute("preference"));
+      if (!pref.value)
+        return true;
+    }
+    return false;
+  },
+
+  /**
+   * Show the history items list.
+   */
+  showItemList: function () {
+    var itemList = document.getElementById("itemList");
+    var expanderButton = document.getElementById("detailsExpander");
+
+    if (itemList.collapsed) {
+      expanderButton.className = "expander-up";
+      itemList.setAttribute("collapsed", "false");
+      if (document.documentElement.boxObject.height)
+        window.resizeBy(0, itemList.boxObject.height);
+    }
+  },
+
+  /**
+   * Hide the history items list.
+   */
+  hideItemList: function () {
+    var itemList = document.getElementById("itemList");
+    var expanderButton = document.getElementById("detailsExpander");
+
+    if (!itemList.collapsed) {
+      expanderButton.className = "expander-down";
+      window.resizeBy(0, -itemList.boxObject.height);
+      itemList.setAttribute("collapsed", "true");
+    }
+  },
+
+  /**
+   * Called by the item list expander button to toggle the list's visibility.
+   */
+  toggleItemList: function ()
+  {
+    var itemList = document.getElementById("itemList");
+
+    if (itemList.collapsed)
+      this.showItemList();
+    else
+      this.hideItemList();
+  }
+
+#ifdef CRH_DIALOG_TREE_VIEW
+  // A duration value; used in the same context as Sanitizer.TIMESPAN_HOUR,
+  // Sanitizer.TIMESPAN_2HOURS, et al.  This should match the value attribute
+  // of the sanitizeDurationCustom menuitem.
+  get TIMESPAN_CUSTOM()
+  {
+    return -1;
+  },
+
+  get placesTree()
+  {
+    if (!this._placesTree)
+      this._placesTree = document.getElementById("placesTree");
+    return this._placesTree;
+  },
+
+  init: function ()
+  {
+    // This is used by selectByTimespan() to determine if the window has loaded.
+    this._inited = true;
+
+    var s = new Sanitizer();
+    s.prefDomain = "privacy.cpd.";
+
+    let sanitizeItemList = document.querySelectorAll("#itemList > [preference]");
+    for (let i = 0; i < sanitizeItemList.length; i++) {
+      let prefItem = sanitizeItemList[i];
+      let name = s.getNameFromPreference(prefItem.getAttribute("preference"));
+      s.canClearItem(name, function canClearCallback(aCanClear) {
+        if (!aCanClear) {
+          prefItem.preference = null;
+          prefItem.checked = false;
+          prefItem.disabled = true;
+        }
+      });
+    }
+
+    document.documentElement.getButton("accept").label =
+      this.bundleBrowser.getString("sanitizeButtonOK");
+
+    this.selectByTimespan();
+  },
+
+  /**
+   * Sets up the hashes this.durationValsToRows, which maps duration values
+   * to rows in the tree, this.durationRowsToVals, which maps rows in
+   * the tree to duration values, and this.durationStartTimes, which maps
+   * duration values to their corresponding start times.
+   */
+  initDurationDropdown: function ()
+  {
+    // First, calculate the start times for each duration.
+    this.durationStartTimes = {};
+    var durVals = [];
+    var durPopup = document.getElementById("sanitizeDurationPopup");
+    var durMenuitems = durPopup.childNodes;
+    for (let i = 0; i < durMenuitems.length; i++) {
+      let durMenuitem = durMenuitems[i];
+      let durVal = parseInt(durMenuitem.value);
+      if (durMenuitem.localName === "menuitem" &&
+          durVal !== Sanitizer.TIMESPAN_EVERYTHING &&
+          durVal !== this.TIMESPAN_CUSTOM) {
+        durVals.push(durVal);
+        let durTimes = Sanitizer.getClearRange(durVal);
+        this.durationStartTimes[durVal] = durTimes[0];
+      }
+    }
+
+    // Sort the duration values ascending.  Because one tree index can map to
+    // more than one duration, this ensures that this.durationRowsToVals maps
+    // a row index to the largest duration possible in the code below.
+    durVals.sort();
+
+    // Now calculate the rows in the tree of the durations' start times.  For
+    // each duration, we are looking for the node in the tree whose time is the
+    // smallest time greater than or equal to the duration's start time.
+    this.durationRowsToVals = {};
+    this.durationValsToRows = {};
+    var view = this.placesTree.view;
+    // For all rows in the tree except the grippy row...
+    for (let i = 0; i < view.rowCount - 1; i++) {
+      let unfoundDurVals = [];
+      let nodeTime = view.QueryInterface(Ci.nsINavHistoryResultTreeViewer).
+                     nodeForTreeIndex(i).time;
+      // For all durations whose rows have not yet been found in the tree, see
+      // if index i is their index.  An index may map to more than one duration,
+      // in which case the final duration (the largest) wins.
+      for (let j = 0; j < durVals.length; j++) {
+        let durVal = durVals[j];
+        let durStartTime = this.durationStartTimes[durVal];
+        if (nodeTime < durStartTime) {
+          this.durationValsToRows[durVal] = i - 1;
+          this.durationRowsToVals[i - 1] = durVal;
+        }
+        else
+          unfoundDurVals.push(durVal);
+      }
+      durVals = unfoundDurVals;
+    }
+
+    // If any durations were not found above, then every node in the tree has a
+    // time greater than or equal to the duration.  In other words, those
+    // durations include the entire tree (except the grippy row).
+    for (let i = 0; i < durVals.length; i++) {
+      let durVal = durVals[i];
+      this.durationValsToRows[durVal] = view.rowCount - 2;
+      this.durationRowsToVals[view.rowCount - 2] = durVal;
+    }
+  },
+
+  /**
+   * If the Places tree is not set up, sets it up.  Otherwise does nothing.
+   */
+  ensurePlacesTreeIsInited: function ()
+  {
+    if (this._placesTreeIsInited)
+      return;
+
+    this._placesTreeIsInited = true;
+
+    // Either "Last Four Hours" or "Today" will have the most history.  If
+    // it's been more than 4 hours since today began, "Today" will. Otherwise
+    // "Last Four Hours" will.
+    var times = Sanitizer.getClearRange(Sanitizer.TIMESPAN_TODAY);
+
+    // If it's been less than 4 hours since today began, use the past 4 hours.
+    if (times[1] - times[0] < 14400000000) { // 4*60*60*1000000
+      times = Sanitizer.getClearRange(Sanitizer.TIMESPAN_4HOURS);
+    }
+
+    var histServ = Cc["@mozilla.org/browser/nav-history-service;1"].
+                   getService(Ci.nsINavHistoryService);
+    var query = histServ.getNewQuery();
+    query.beginTimeReference = query.TIME_RELATIVE_EPOCH;
+    query.beginTime = times[0];
+    query.endTimeReference = query.TIME_RELATIVE_EPOCH;
+    query.endTime = times[1];
+    var opts = histServ.getNewQueryOptions();
+    opts.sortingMode = opts.SORT_BY_DATE_DESCENDING;
+    opts.queryType = opts.QUERY_TYPE_HISTORY;
+    var result = histServ.executeQuery(query, opts);
+
+    var view = gContiguousSelectionTreeHelper.setTree(this.placesTree,
+                                                      new PlacesTreeView());
+    result.addObserver(view, false);
+    this.initDurationDropdown();
+  },
+
+  /**
+   * Called on select of the duration dropdown and when grippyMoved() sets a
+   * duration based on the location of the grippy row.  Selects all the nodes in
+   * the tree that are contained in the selected duration.  If clearing
+   * everything, the warning panel is shown instead.
+   */
+  selectByTimespan: function ()
+  {
+    // This method is the onselect handler for the duration dropdown.  As a
+    // result it's called a couple of times before onload calls init().
+    if (!this._inited)
+      return;
+
+    var durDeck = document.getElementById("durationDeck");
+    var durList = document.getElementById("sanitizeDurationChoice");
+    var durVal = parseInt(durList.value);
+    var durCustom = document.getElementById("sanitizeDurationCustom");
+
+    // If grippy row is not at a duration boundary, show the custom menuitem;
+    // otherwise, hide it.  Since the user cannot specify a custom duration by
+    // using the dropdown, this conditional is true only when this method is
+    // called onselect from grippyMoved(), so no selection need be made.
+    if (durVal === this.TIMESPAN_CUSTOM) {
+      durCustom.hidden = false;
+      return;
+    }
+    durCustom.hidden = true;
+
+    // If clearing everything, show the warning and change the dialog's title.
+    if (durVal === Sanitizer.TIMESPAN_EVERYTHING) {
+      this.prepareWarning();
+      durDeck.selectedIndex = 1;
+      window.document.title =
+        this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+      document.documentElement.getButton("accept").disabled = false;
+      return;
+    }
+
+    // Otherwise -- if clearing a specific time range -- select that time range
+    // in the tree.
+    this.ensurePlacesTreeIsInited();
+    durDeck.selectedIndex = 0;
+    window.document.title =
+      window.document.documentElement.getAttribute("noneverythingtitle");
+    var durRow = this.durationValsToRows[durVal];
+    gContiguousSelectionTreeHelper.rangedSelect(durRow);
+    gContiguousSelectionTreeHelper.scrollToGrippy();
+
+    // If duration is empty (there are no selected rows), disable the dialog's
+    // OK button.
+    document.documentElement.getButton("accept").disabled = durRow < 0;
+  },
+
+  sanitize: function ()
+  {
+    // Update pref values before handing off to the sanitizer (bug 453440)
+    this.updatePrefs();
+    var s = new Sanitizer();
+    s.prefDomain = "privacy.cpd.";
+
+    var durList = document.getElementById("sanitizeDurationChoice");
+    var durValue = parseInt(durList.value);
+    s.ignoreTimespan = durValue === Sanitizer.TIMESPAN_EVERYTHING;
+
+    // Set the sanitizer's time range if we're not clearing everything.
+    if (!s.ignoreTimespan) {
+      // If user selected a custom timespan, use that.
+      if (durValue === this.TIMESPAN_CUSTOM) {
+        var view = this.placesTree.view;
+        var now = Date.now() * 1000;
+        // We disable the dialog's OK button if there's no selection, but we'll
+        // handle that case just in... case.
+        if (view.selection.getRangeCount() === 0)
+          s.range = [now, now];
+        else {
+          var startIndexRef = {};
+          // Tree sorted by visit date DEscending, so start time time comes last.
+          view.selection.getRangeAt(0, {}, startIndexRef);
+          view.QueryInterface(Ci.nsINavHistoryResultTreeViewer);
+          var startNode = view.nodeForTreeIndex(startIndexRef.value);
+          s.range = [startNode.time, now];
+        }
+      }
+      // Otherwise use the predetermined range.
+      else
+        s.range = [this.durationStartTimes[durValue], Date.now() * 1000];
+    }
+
+    try {
+      s.sanitize();
+    } catch (er) {
+      Components.utils.reportError("Exception during sanitize: " + er);
+    }
+    return true;
+  },
+
+  /**
+   * In order to mark the custom Places tree view and its nsINavHistoryResult
+   * for garbage collection, we need to break the reference cycle between the
+   * two.
+   */
+  unload: function ()
+  {
+    let result = this.placesTree.getResult();
+    result.removeObserver(this.placesTree.view);
+    this.placesTree.view = null;
+  },
+
+  /**
+   * Called when the user moves the grippy by dragging it, clicking in the tree,
+   * or on keypress.  Updates the duration dropdown so that it displays the
+   * appropriate specific or custom duration.
+   *
+   * @param aEventName
+   *        The name of the event whose handler called this method, e.g.,
+   *        "ondragstart", "onkeypress", etc.
+   * @param aEvent
+   *        The event captured in the event handler.
+   */
+  grippyMoved: function (aEventName, aEvent)
+  {
+    gContiguousSelectionTreeHelper[aEventName](aEvent);
+    var lastSelRow = gContiguousSelectionTreeHelper.getGrippyRow() - 1;
+    var durList = document.getElementById("sanitizeDurationChoice");
+    var durValue = parseInt(durList.value);
+
+    // Multiple durations can map to the same row.  Don't update the dropdown
+    // if the current duration is valid for lastSelRow.
+    if ((durValue !== this.TIMESPAN_CUSTOM ||
+         lastSelRow in this.durationRowsToVals) &&
+        (durValue === this.TIMESPAN_CUSTOM ||
+         this.durationValsToRows[durValue] !== lastSelRow)) {
+      // Setting durList.value causes its onselect handler to fire, which calls
+      // selectByTimespan().
+      if (lastSelRow in this.durationRowsToVals)
+        durList.value = this.durationRowsToVals[lastSelRow];
+      else
+        durList.value = this.TIMESPAN_CUSTOM;
+    }
+
+    // If there are no selected rows, disable the dialog's OK button.
+    document.documentElement.getButton("accept").disabled = lastSelRow < 0;
+  }
+#endif
+
+};
+
+
+#ifdef CRH_DIALOG_TREE_VIEW
+/**
+ * A helper for handling contiguous selection in the tree.
+ */
+var gContiguousSelectionTreeHelper = {
+
+  /**
+   * Gets the tree associated with this helper.
+   */
+  get tree()
+  {
+    return this._tree;
+  },
+
+  /**
+   * Sets the tree that this module handles.  The tree is assigned a new view
+   * that is equipped to handle contiguous selection.  You can pass in an
+   * object that will be used as the prototype of the new view.  Otherwise
+   * the tree's current view is used as the prototype.
+   *
+   * @param  aTreeElement
+   *         The tree element
+   * @param  aProtoTreeView
+   *         If defined, this will be used as the prototype of the tree's new
+   *         view
+   * @return The new view
+   */
+  setTree: function CSTH_setTree(aTreeElement, aProtoTreeView)
+  {
+    this._tree = aTreeElement;
+    var newView = this._makeTreeView(aProtoTreeView || aTreeElement.view);
+    aTreeElement.view = newView;
+    return newView;
+  },
+
+  /**
+   * The index of the row that the grippy occupies.  Note that the index of the
+   * last selected row is getGrippyRow() - 1.  If getGrippyRow() is 0, then
+   * no selection exists.
+   *
+   * @return The row index of the grippy
+   */
+  getGrippyRow: function CSTH_getGrippyRow()
+  {
+    var sel = this.tree.view.selection;
+    var rangeCount = sel.getRangeCount();
+    if (rangeCount === 0)
+      return 0;
+    if (rangeCount !== 1) {
+      throw "contiguous selection tree helper: getGrippyRow called with " +
+            "multiple selection ranges";
+    }
+    var max = {};
+    sel.getRangeAt(0, {}, max);
+    return max.value + 1;
+  },
+
+  /**
+   * Helper function for the dragover event.  Your dragover listener should
+   * call this.  It updates the selection in the tree under the mouse.
+   *
+   * @param aEvent
+   *        The observed dragover event
+   */
+  ondragover: function CSTH_ondragover(aEvent)
+  {
+    // Without this when dragging on Windows the mouse cursor is a "no" sign.
+    // This makes it a drop symbol.
+    var ds = Cc["@mozilla.org/widget/dragservice;1"].
+             getService(Ci.nsIDragService).
+             getCurrentSession();
+    ds.canDrop = true;
+    ds.dragAction = 0;
+
+    var tbo = this.tree.treeBoxObject;
+    aEvent.QueryInterface(Ci.nsIDOMMouseEvent);
+    var hoverRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+    if (hoverRow < 0)
+      return;
+
+    this.rangedSelect(hoverRow - 1);
+  },
+
+  /**
+   * Helper function for the dragstart event.  Your dragstart listener should
+   * call this.  It starts a drag session.
+   *
+   * @param aEvent
+   *        The observed dragstart event
+   */
+  ondragstart: function CSTH_ondragstart(aEvent)
+  {
+    var tbo = this.tree.treeBoxObject;
+    var clickedRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+    if (clickedRow !== this.getGrippyRow())
+      return;
+
+    // This part is a hack.  What we really want is a grab and slide, not
+    // drag and drop.  Start a move drag session with dummy data and a
+    // dummy region.  Set the region's coordinates to (Infinity, Infinity)
+    // so it's drawn offscreen and its size to (1, 1).
+    var arr = Cc["@mozilla.org/supports-array;1"].
+              createInstance(Ci.nsISupportsArray);
+    var trans = Cc["@mozilla.org/widget/transferable;1"].
+                createInstance(Ci.nsITransferable);
+    trans.init(null);
+    trans.setTransferData('dummy-flavor', null, 0);
+    arr.AppendElement(trans);
+    var reg = Cc["@mozilla.org/gfx/region;1"].
+              createInstance(Ci.nsIScriptableRegion);
+    reg.setToRect(Infinity, Infinity, 1, 1);
+    var ds = Cc["@mozilla.org/widget/dragservice;1"].
+             getService(Ci.nsIDragService);
+    ds.invokeDragSession(aEvent.target, arr, reg, ds.DRAGDROP_ACTION_MOVE);
+  },
+
+  /**
+   * Helper function for the keypress event.  Your keypress listener should
+   * call this.  Users can use Up, Down, Page Up/Down, Home, and End to move
+   * the bottom of the selection window.
+   *
+   * @param aEvent
+   *        The observed keypress event
+   */
+  onkeypress: function CSTH_onkeypress(aEvent)
+  {
+    var grippyRow = this.getGrippyRow();
+    var tbo = this.tree.treeBoxObject;
+    var rangeEnd;
+    switch (aEvent.keyCode) {
+    case aEvent.DOM_VK_HOME:
+      rangeEnd = 0;
+      break;
+    case aEvent.DOM_VK_PAGE_UP:
+      rangeEnd = grippyRow - tbo.getPageLength();
+      break;
+    case aEvent.DOM_VK_UP:
+      rangeEnd = grippyRow - 2;
+      break;
+    case aEvent.DOM_VK_DOWN:
+      rangeEnd = grippyRow;
+      break;
+    case aEvent.DOM_VK_PAGE_DOWN:
+      rangeEnd = grippyRow + tbo.getPageLength();
+      break;
+    case aEvent.DOM_VK_END:
+      rangeEnd = this.tree.view.rowCount - 2;
+      break;
+    default:
+      return;
+      break;
+    }
+
+    aEvent.stopPropagation();
+
+    // First, clip rangeEnd.  this.rangedSelect() doesn't clip the range if we
+    // select past the ends of the tree.
+    if (rangeEnd < 0)
+      rangeEnd = -1;
+    else if (this.tree.view.rowCount - 2 < rangeEnd)
+      rangeEnd = this.tree.view.rowCount - 2;
+
+    // Next, (de)select.
+    this.rangedSelect(rangeEnd);
+
+    // Finally, scroll the tree.  We always want one row above and below the
+    // grippy row to be visible if possible.
+    if (rangeEnd < grippyRow) // moved up
+      tbo.ensureRowIsVisible(rangeEnd < 0 ? 0 : rangeEnd);
+    else {                    // moved down
+      if (rangeEnd + 2 < this.tree.view.rowCount)
+        tbo.ensureRowIsVisible(rangeEnd + 2);
+      else if (rangeEnd + 1 < this.tree.view.rowCount)
+        tbo.ensureRowIsVisible(rangeEnd + 1);
+    }
+  },
+
+  /**
+   * Helper function for the mousedown event.  Your mousedown listener should
+   * call this.  Users can click on individual rows to make the selection
+   * jump to them immediately.
+   *
+   * @param aEvent
+   *        The observed mousedown event
+   */
+  onmousedown: function CSTH_onmousedown(aEvent)
+  {
+    var tbo = this.tree.treeBoxObject;
+    var clickedRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+    if (clickedRow < 0 || clickedRow >= this.tree.view.rowCount)
+      return;
+
+    if (clickedRow < this.getGrippyRow())
+      this.rangedSelect(clickedRow);
+    else if (clickedRow > this.getGrippyRow())
+      this.rangedSelect(clickedRow - 1);
+  },
+
+  /**
+   * Selects range [0, aEndRow] in the tree.  The grippy row will then be at
+   * index aEndRow + 1.  aEndRow may be -1, in which case the selection is
+   * cleared and the grippy row will be at index 0.
+   *
+   * @param aEndRow
+   *        The range [0, aEndRow] will be selected.
+   */
+  rangedSelect: function CSTH_rangedSelect(aEndRow)
+  {
+    var tbo = this.tree.treeBoxObject;
+    if (aEndRow < 0)
+      this.tree.view.selection.clearSelection();
+    else
+      this.tree.view.selection.rangedSelect(0, aEndRow, false);
+    tbo.invalidateRange(tbo.getFirstVisibleRow(), tbo.getLastVisibleRow());
+  },
+
+  /**
+   * Scrolls the tree so that the grippy row is in the center of the view.
+   */
+  scrollToGrippy: function CSTH_scrollToGrippy()
+  {
+    var rowCount = this.tree.view.rowCount;
+    var tbo = this.tree.treeBoxObject;
+    var pageLen = tbo.getPageLength() ||
+                  parseInt(this.tree.getAttribute("rows")) ||
+                  10;
+
+    // All rows fit on a single page.
+    if (rowCount <= pageLen)
+      return;
+
+    var scrollToRow = this.getGrippyRow() - Math.ceil(pageLen / 2.0);
+
+    // Grippy row is in first half of first page.
+    if (scrollToRow < 0)
+      scrollToRow = 0;
+
+    // Grippy row is in last half of last page.
+    else if (rowCount < scrollToRow + pageLen)
+      scrollToRow = rowCount - pageLen;
+
+    tbo.scrollToRow(scrollToRow);
+  },
+
+  /**
+   * Creates a new tree view suitable for contiguous selection.  If
+   * aProtoTreeView is specified, it's used as the new view's prototype.
+   * Otherwise the tree's current view is used as the prototype.
+   *
+   * @param aProtoTreeView
+   *        Used as the new view's prototype if specified
+   */
+  _makeTreeView: function CSTH__makeTreeView(aProtoTreeView)
+  {
+    var view = aProtoTreeView;
+    var that = this;
+
+    //XXXadw: When Alex gets the grippy icon done, this may or may not change,
+    //        depending on how we style it.
+    view.isSeparator = function CSTH_View_isSeparator(aRow)
+    {
+      return aRow === that.getGrippyRow();
+    };
+
+    // rowCount includes the grippy row.
+    view.__defineGetter__("_rowCount", view.__lookupGetter__("rowCount"));
+    view.__defineGetter__("rowCount",
+      function CSTH_View_rowCount()
+      {
+        return this._rowCount + 1;
+      });
+
+    // This has to do with visual feedback in the view itself, e.g., drawing
+    // a small line underneath the dropzone.  Not what we want.
+    view.canDrop = function CSTH_View_canDrop() { return false; };
+
+    // No clicking headers to sort the tree or sort feedback on columns.
+    view.cycleHeader = function CSTH_View_cycleHeader() {};
+    view.sortingChanged = function CSTH_View_sortingChanged() {};
+
+    // Override a bunch of methods to account for the grippy row.
+
+    view._getCellProperties = view.getCellProperties;
+    view.getCellProperties =
+      function CSTH_View_getCellProperties(aRow, aCol)
+      {
+        var grippyRow = that.getGrippyRow();
+        if (aRow === grippyRow)
+          return "grippyRow";
+        if (aRow < grippyRow)
+          return this._getCellProperties(aRow, aCol);
+
+        return this._getCellProperties(aRow - 1, aCol);
+      };
+
+    view._getRowProperties = view.getRowProperties;
+    view.getRowProperties =
+      function CSTH_View_getRowProperties(aRow)
+      {
+        var grippyRow = that.getGrippyRow();
+        if (aRow === grippyRow)
+          return "grippyRow";
+
+        if (aRow < grippyRow)
+          return this._getRowProperties(aRow);
+
+        return this._getRowProperties(aRow - 1);
+      };
+
+    view._getCellText = view.getCellText;
+    view.getCellText =
+      function CSTH_View_getCellText(aRow, aCol)
+      {
+        var grippyRow = that.getGrippyRow();
+        if (aRow === grippyRow)
+          return "";
+        aRow = aRow < grippyRow ? aRow : aRow - 1;
+        return this._getCellText(aRow, aCol);
+      };
+
+    view._getImageSrc = view.getImageSrc;
+    view.getImageSrc =
+      function CSTH_View_getImageSrc(aRow, aCol)
+      {
+        var grippyRow = that.getGrippyRow();
+        if (aRow === grippyRow)
+          return "";
+        aRow = aRow < grippyRow ? aRow : aRow - 1;
+        return this._getImageSrc(aRow, aCol);
+      };
+
+    view.isContainer = function CSTH_View_isContainer(aRow) { return false; };
+    view.getParentIndex = function CSTH_View_getParentIndex(aRow) { return -1; };
+    view.getLevel = function CSTH_View_getLevel(aRow) { return 0; };
+    view.hasNextSibling = function CSTH_View_hasNextSibling(aRow, aAfterIndex)
+    {
+      return aRow < this.rowCount - 1;
+    };
+
+    return view;
+  }
+};
+#endif
diff --git a/webbrowser/base/content/softwareUpdateOverlay.xul b/webbrowser/base/content/softwareUpdateOverlay.xul
new file mode 100644
index 0000000..01170e4
--- /dev/null
+++ b/webbrowser/base/content/softwareUpdateOverlay.xul
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xul-overlay href="chrome://browser/content/macBrowserOverlay.xul"?>
+
+<overlay id="softwareUpdateOverlay"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<window id="updates">
+
+#include browserMountPoints.inc
+
+</window>
+
+</overlay>
diff --git a/webbrowser/base/content/tabbrowser.css b/webbrowser/base/content/tabbrowser.css
new file mode 100644
index 0000000..43536b2
--- /dev/null
+++ b/webbrowser/base/content/tabbrowser.css
@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+.tabbrowser-tabbox {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-tabbox");
+  /* Make the content area follow the system colors before load */
+  background: Menu;
+  color: MenuText;
+}
+
+.tabbrowser-arrowscrollbox {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-arrowscrollbox");
+}
+
+.tab-close-button {
+  -moz-binding: url("chrome://browser/content/tabbrowser.xml#tabbrowser-close-tab-button");
+  display: none;
+}
+
+.tabbrowser-tabs[closebuttons="activetab"] > * > * > * > .tab-close-button:not([pinned])[selected="true"],
+.tabbrowser-tabs[closebuttons="alltabs"] > * > * > * > .tab-close-button:not([pinned]) {
+  display: -moz-box;
+}
+
+.tab-label[pinned] {
+  width: 0;
+  margin-left: 0 !important;
+  margin-right: 0 !important;
+  padding-left: 0 !important;
+  padding-right: 0 !important;
+}
+
+.tab-stack {
+  vertical-align: top; /* for pinned tabs */
+}
+
+tabpanels {
+  background-color: transparent;
+}
+
+.tab-drop-indicator {
+  position: relative;
+  z-index: 2;
+}
+
+.tab-throbber:not([busy]),
+.tab-throbber[busy] + .tab-icon-image,
+.tab-icon-sound:not([soundplaying]):not([muted]):not([blocked]),
+.tab-icon-sound[pinned],
+.tab-icon-overlay {
+  display: none;
+}
+
+.tab-icon-overlay[soundplaying][pinned],
+.tab-icon-overlay[muted][pinned],
+.tab-icon-overlay[blocked][pinned] {
+  display: -moz-box;
+}
+
+.closing-tabs-spacer {
+  pointer-events: none;
+}
+
+.tabbrowser-tabs:not(:hover) > .tabbrowser-arrowscrollbox > .closing-tabs-spacer {
+  transition: width .15s ease-out;
+}
+
+/**
+ * Optimization for tabs that are restored lazily. We can save a good amount of
+ * memory that to-be-restored tabs would otherwise consume simply by setting
+ * their browsers to 'display: none' as that will prevent them from having to
+ * create a presentation and the like.
+ */
+browser[pending] {
+  display: none;
+}
diff --git a/webbrowser/base/content/tabbrowser.xml b/webbrowser/base/content/tabbrowser.xml
new file mode 100644
index 0000000..b5edd54
--- /dev/null
+++ b/webbrowser/base/content/tabbrowser.xml
@@ -0,0 +1,5403 @@
+<?xml version="1.0"?>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<!DOCTYPE bindings [
+<!ENTITY % tabBrowserDTD SYSTEM "chrome://browser/locale/tabbrowser.dtd" >
+%tabBrowserDTD;
+]>
+
+<bindings id="tabBrowserBindings"
+          xmlns="http://www.mozilla.org/xbl"
+          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+          xmlns:xbl="http://www.mozilla.org/xbl">
+
+  <binding id="tabbrowser">
+    <resources>
+      <stylesheet src="chrome://browser/content/tabbrowser.css"/>
+    </resources>
+
+    <content>
+      <xul:stringbundle anonid="tbstringbundle" src="chrome://browser/locale/tabbrowser.properties"/>
+      <xul:tabbox anonid="tabbox" class="tabbrowser-tabbox"
+                  flex="1" eventnode="document" xbl:inherits="handleCtrlPageUpDown"
+                  onselect="if (event.target.localName == 'tabpanels') this.parentNode.updateCurrentBrowser();">
+        <xul:tabpanels flex="1" class="plain" selectedIndex="0" anonid="panelcontainer">
+          <xul:notificationbox flex="1">
+            <xul:hbox flex="1" class="browserSidebarContainer">
+              <xul:vbox flex="1" class="browserContainer">
+                <xul:stack flex="1" class="browserStack" anonid="browserStack">
+                  <xul:browser anonid="initialBrowser" type="content-primary" message="true" disablehistory="true"
+                               xbl:inherits="tooltip=contenttooltip,contextmenu=contentcontextmenu,autocompletepopup,datetimepicker,authdosprotected"/>
+                </xul:stack>
+              </xul:vbox>
+            </xul:hbox>
+          </xul:notificationbox>
+        </xul:tabpanels>
+      </xul:tabbox>
+      <children/>
+    </content>
+    <implementation implements="nsIDOMEventListener, nsIMessageListener">
+
+      <property name="tabContextMenu" readonly="true"
+                onget="return this.tabContainer.contextMenu;"/>
+
+      <field name="tabContainer" readonly="true">
+        document.getElementById(this.getAttribute("tabcontainer"));
+      </field>
+      <field name="tabs" readonly="true">
+        this.tabContainer.childNodes;
+      </field>
+
+      <property name="visibleTabs" readonly="true">
+        <getter><![CDATA[
+          if (!this._visibleTabs)
+            this._visibleTabs = Array.filter(this.tabs,
+                                             function (tab) !tab.hidden && !tab.closing);
+          return this._visibleTabs;
+        ]]></getter>
+      </property>
+
+      <field name="closingTabsEnum" readonly="true">({ ALL: 0, OTHER: 1, TO_END: 2 });</field>
+
+      <field name="_visibleTabs">null</field>
+
+      <field name="mURIFixup" readonly="true">
+        Components.classes["@mozilla.org/docshell/urifixup;1"]
+                  .getService(Components.interfaces.nsIURIFixup);
+      </field>
+      <field name="mFaviconService" readonly="true">
+        Components.classes["@mozilla.org/browser/favicon-service;1"]
+                  .getService(Components.interfaces.nsIFaviconService);
+      </field>
+      <field name="_placesAutocomplete" readonly="true">
+         Components.classes["@mozilla.org/autocomplete/search;1?name=history"]
+                   .getService(Components.interfaces.mozIPlacesAutoComplete);
+      </field>
+      <field name="mTabBox" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "tabbox");
+      </field>
+      <field name="mPanelContainer" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "panelcontainer");
+      </field>
+      <field name="mStringBundle">
+        document.getAnonymousElementByAttribute(this, "anonid", "tbstringbundle");
+      </field>
+      <field name="mCurrentTab">
+        null
+      </field>
+      <field name="_lastRelatedTab">
+        null
+      </field>
+      <field name="mCurrentBrowser">
+        null
+      </field>
+      <field name="mProgressListeners">
+        []
+      </field>
+      <field name="mTabsProgressListeners">
+        []
+      </field>
+      <field name="mTabListeners">
+        []
+      </field>
+      <field name="mTabFilters">
+        []
+      </field>
+      <field name="mIsBusy">
+        false
+      </field>
+      <field name="_outerWindowIDBrowserMap">
+        new Map();
+      </field>
+      <field name="arrowKeysShouldWrap" readonly="true">
+#ifdef XP_MACOSX
+        true
+#else
+        false
+#endif
+      </field>
+
+      <field name="_autoScrollPopup">
+        null
+      </field>
+
+      <field name="_previewMode">
+        false
+      </field>
+
+      <property name="_numPinnedTabs" readonly="true">
+        <getter><![CDATA[
+          for (var i = 0; i < this.tabs.length; i++) {
+            if (!this.tabs[i].pinned)
+              break;
+          }
+          return i;
+        ]]></getter>
+      </property>
+
+      <property name="popupAnchor" readonly="true">
+        <getter><![CDATA[
+        if (this.mCurrentTab._popupAnchor) {
+          return this.mCurrentTab._popupAnchor;
+        }
+        let stack = this.mCurrentBrowser.parentNode;
+        // Create an anchor for the popup
+        const NS_XUL = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+        let popupAnchor = document.createElementNS(NS_XUL, "hbox");
+        popupAnchor.className = "popup-anchor";
+        popupAnchor.hidden = true;
+        stack.appendChild(popupAnchor);
+        return this.mCurrentTab._popupAnchor = popupAnchor;
+        ]]></getter>
+      </property>
+
+      <method name="updateWindowResizers">
+        <body><![CDATA[
+          if (!window.gShowPageResizers)
+            return;
+
+          var show = document.getElementById("addon-bar").collapsed &&
+                     window.windowState == window.STATE_NORMAL;
+          for (let i = 0; i < this.browsers.length; i++) {
+            this.browsers[i].showWindowResizer = show;
+          }
+        ]]></body>
+      </method>
+
+      <method name="_setCloseKeyState">
+        <parameter name="aEnabled"/>
+        <body><![CDATA[
+          let keyClose = document.getElementById("key_close");
+          let closeKeyEnabled = keyClose.getAttribute("disabled") != "true";
+          if (closeKeyEnabled == aEnabled)
+            return;
+
+          if (aEnabled)
+            keyClose.removeAttribute("disabled");
+          else
+            keyClose.setAttribute("disabled", "true");
+
+          // We also want to remove the keyboard shortcut from the file menu
+          // when the shortcut is disabled, and bring it back when it's
+          // renabled.
+          //
+          // Fixing bug 630826 could make that happen automatically.
+          // Fixing bug 630830 could avoid the ugly hack below.
+
+          let closeMenuItem = document.getElementById("menu_close");
+          let parentPopup = closeMenuItem.parentNode;
+          let nextItem = closeMenuItem.nextSibling;
+          let clonedItem = closeMenuItem.cloneNode(true);
+
+          parentPopup.removeChild(closeMenuItem);
+
+          if (aEnabled)
+            clonedItem.setAttribute("key", "key_close");
+          else
+            clonedItem.removeAttribute("key");
+
+          parentPopup.insertBefore(clonedItem, nextItem);
+        ]]></body>
+      </method>
+
+      <method name="pinTab">
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          if (aTab.pinned)
+            return;
+
+          if (aTab.hidden)
+            this.showTab(aTab);
+
+          this.moveTabTo(aTab, this._numPinnedTabs);
+          aTab.setAttribute("pinned", "true");
+          this.tabContainer._unlockTabSizing();
+          this.tabContainer._positionPinnedTabs();
+          this.tabContainer.adjustTabstrip();
+
+          this.getBrowserForTab(aTab).docShell.isAppTab = true;
+
+          if (aTab.selected)
+            this._setCloseKeyState(false);
+
+          let event = document.createEvent("Events");
+          event.initEvent("TabPinned", true, false);
+          aTab.dispatchEvent(event);
+        ]]></body>
+      </method>
+
+      <method name="unpinTab">
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          if (!aTab.pinned)
+            return;
+
+          this.moveTabTo(aTab, this._numPinnedTabs - 1);
+          aTab.setAttribute("fadein", "true");
+          aTab.removeAttribute("pinned");
+          aTab.style.MozMarginStart = "";
+          this.tabContainer._unlockTabSizing();
+          this.tabContainer._positionPinnedTabs();
+          this.tabContainer.adjustTabstrip();
+
+          this.getBrowserForTab(aTab).docShell.isAppTab = false;
+
+          if (aTab.selected)
+            this._setCloseKeyState(true);
+
+          let event = document.createEvent("Events");
+          event.initEvent("TabUnpinned", true, false);
+          aTab.dispatchEvent(event);
+        ]]></body>
+      </method>
+
+      <method name="previewTab">
+        <parameter name="aTab"/>
+        <parameter name="aCallback"/>
+        <body>
+          <![CDATA[
+            let currentTab = this.selectedTab;
+            try {
+              // Suppress focus, ownership and selected tab changes
+              this._previewMode = true;
+              this.selectedTab = aTab;
+              aCallback();
+            } finally {
+              this.selectedTab = currentTab;
+              this._previewMode = false;
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserAtIndex">
+        <parameter name="aIndex"/>
+        <body>
+          <![CDATA[
+            return this.browsers[aIndex];
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserIndexForDocument">
+        <parameter name="aDocument"/>
+        <body>
+          <![CDATA[
+            var tab = this._getTabForContentWindow(aDocument.defaultView);
+            return tab ? tab._tPos : -1;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserForDocument">
+        <parameter name="aDocument"/>
+        <body>
+          <![CDATA[
+            var tab = this._getTabForContentWindow(aDocument.defaultView);
+            return tab ? tab.linkedBrowser : null;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserForContentWindow">
+        <parameter name="aWindow"/>
+        <body>
+          <![CDATA[
+            var tab = this._getTabForContentWindow(aWindow);
+            return tab ? tab.linkedBrowser : null;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserForOuterWindowID">
+        <parameter name="aID"/>
+        <body>
+          <![CDATA[
+            return this._outerWindowIDBrowserMap.get(aID);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_getTabForContentWindow">
+        <parameter name="aWindow"/>
+        <body>
+        <![CDATA[
+          for (let i = 0; i < this.browsers.length; i++) {
+            if (this.browsers[i].contentWindow == aWindow)
+              return this.tabs[i];
+          }
+          return null;
+        ]]>
+        </body>
+      </method>
+
+      <!-- Binding from browser to tab -->
+      <field name="_tabForBrowser" readonly="true">
+      <![CDATA[
+        new WeakMap();
+      ]]>
+      </field>
+
+      <method name="_getTabForBrowser">
+        <parameter name="aBrowser" />
+        <body>
+        <![CDATA[
+          let Deprecated = Components.utils.import("resource://gre/modules/Deprecated.jsm", {}).Deprecated;
+          let text = "_getTabForBrowser` is now deprecated, please use `getTabForBrowser";
+          let url = "https://developer.mozilla.org/docs/Mozilla/Tech/XUL/Method/getTabForBrowser";
+          Deprecated.warning(text, url);
+          return this.getTabForBrowser(aBrowser);
+        ]]>
+        </body>
+      </method>
+
+      <method name="getTabForBrowser">
+        <parameter name="aBrowser"/>
+        <body>
+        <![CDATA[
+          return this._tabForBrowser.get(aBrowser);
+        ]]>
+        </body>
+      </method>
+
+      <method name="getNotificationBox">
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            return this.getSidebarContainer(aBrowser).parentNode;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getSidebarContainer">
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            return this.getBrowserContainer(aBrowser).parentNode;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserContainer">
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            return (aBrowser || this.mCurrentBrowser).parentNode.parentNode;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getTabModalPromptBox">
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+            let browser = (aBrowser || this.mCurrentBrowser);
+            let stack = browser.parentNode;
+            let self = this;
+
+            let promptBox = {
+              appendPrompt : function(args, onCloseCallback) {
+                let newPrompt = document.createElementNS(XUL_NS, "tabmodalprompt");
+                // stack.appendChild(newPrompt);
+                stack.insertBefore(newPrompt, browser.nextSibling);
+                browser.setAttribute("tabmodalPromptShowing", true);
+
+                newPrompt.clientTop; // style flush to assure binding is attached
+
+                let prompts = this.listPrompts();
+                if (prompts.length > 1) {
+                  // Let's hide ourself behind the current prompt.
+                  newPrompt.hidden = true;
+                }
+
+                let tab = self._getTabForContentWindow(browser.contentWindow);
+                newPrompt.init(args, tab, onCloseCallback);
+                return newPrompt;
+              },
+
+              removePrompt : function(aPrompt) {
+                stack.removeChild(aPrompt);
+
+                let prompts = this.listPrompts();
+                if (prompts.length) {
+                  let prompt = prompts[prompts.length - 1];
+                  prompt.hidden = false;
+                  prompt.Dialog.setDefaultFocus();
+                } else {
+                  browser.removeAttribute("tabmodalPromptShowing");
+                  browser.focus();
+                }
+              },
+
+              listPrompts : function(aPrompt) {
+                let els = stack.getElementsByTagNameNS(XUL_NS, "tabmodalprompt");
+                // NodeList --> real JS array
+                let prompts = Array.slice(els);
+                return prompts;
+              },
+            };
+
+            return promptBox;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getTabFromAudioEvent">
+        <parameter name="aEvent"/>
+        <body>
+        <![CDATA[
+          if (!Services.prefs.getBoolPref("browser.tabs.showAudioPlayingIcon") ||
+              !aEvent.isTrusted) {
+            return null;
+          }
+
+          var browser = aEvent.originalTarget;
+          var tab = this.getTabForBrowser(browser);
+          return tab;
+        ]]>
+        </body>
+      </method>
+
+      <method name="_callProgressListeners">
+        <parameter name="aBrowser"/>
+        <parameter name="aMethod"/>
+        <parameter name="aArguments"/>
+        <parameter name="aCallGlobalListeners"/>
+        <parameter name="aCallTabsListeners"/>
+        <body><![CDATA[
+          var rv = true;
+
+          if (!aBrowser)
+            aBrowser = this.mCurrentBrowser;
+
+          if (aCallGlobalListeners != false &&
+              aBrowser == this.mCurrentBrowser) {
+            this.mProgressListeners.forEach(function (p) {
+              if (aMethod in p) {
+                try {
+                  if (!p[aMethod].apply(p, aArguments))
+                    rv = false;
+                } catch (e) {
+                  // don't inhibit other listeners
+                  Components.utils.reportError(e);
+                }
+              }
+            });
+          }
+
+          if (aCallTabsListeners != false) {
+            aArguments.unshift(aBrowser);
+
+            this.mTabsProgressListeners.forEach(function (p) {
+              if (aMethod in p) {
+                try {
+                  if (!p[aMethod].apply(p, aArguments))
+                    rv = false;
+                } catch (e) {
+                  // don't inhibit other listeners
+                  Components.utils.reportError(e);
+                }
+              }
+            });
+          }
+
+          return rv;
+        ]]></body>
+      </method>
+
+      <!-- A web progress listener object definition for a given tab. -->
+      <method name="mTabProgressListener">
+        <parameter name="aTab"/>
+        <parameter name="aBrowser"/>
+        <parameter name="aStartsBlank"/>
+        <body>
+        <![CDATA[
+          return ({
+            mTabBrowser: this,
+            mTab: aTab,
+            mBrowser: aBrowser,
+            mBlank: aStartsBlank,
+
+            // cache flags for correct status UI update after tab switching
+            mStateFlags: 0,
+            mStatus: 0,
+            mMessage: "",
+            mTotalProgress: 0,
+
+            // count of open requests (should always be 0 or 1)
+            mRequestCount: 0,
+
+            destroy: function () {
+              delete this.mTab;
+              delete this.mBrowser;
+              delete this.mTabBrowser;
+            },
+
+            _callProgressListeners: function () {
+              Array.unshift(arguments, this.mBrowser);
+              return this.mTabBrowser._callProgressListeners.apply(this.mTabBrowser, arguments);
+            },
+
+            _shouldShowProgress: function (aRequest) {
+              if (this.mBlank)
+                return false;
+
+              if (gMultiProcessBrowser)
+                return true;
+
+              // Don't show progress indicators in tabs for about: URIs
+              // pointing to local resources.
+              try {
+                let channel = aRequest.QueryInterface(Ci.nsIChannel);
+                if (channel.originalURI.schemeIs("about") &&
+                    (channel.URI.schemeIs("jar") || channel.URI.schemeIs("file")))
+                  return false;
+              } catch (e) {}
+
+              return true;
+            },
+
+            onProgressChange: function (aWebProgress, aRequest,
+                                        aCurSelfProgress, aMaxSelfProgress,
+                                        aCurTotalProgress, aMaxTotalProgress) {
+              this.mTotalProgress = aMaxTotalProgress ? aCurTotalProgress / aMaxTotalProgress : 0;
+
+              if (!this._shouldShowProgress(aRequest))
+                return;
+
+              if (this.mTotalProgress)
+                this.mTab.setAttribute("progress", "true");
+
+              this._callProgressListeners("onProgressChange",
+                                          [aWebProgress, aRequest,
+                                           aCurSelfProgress, aMaxSelfProgress,
+                                           aCurTotalProgress, aMaxTotalProgress]);
+            },
+
+            onProgressChange64: function (aWebProgress, aRequest,
+                                          aCurSelfProgress, aMaxSelfProgress,
+                                          aCurTotalProgress, aMaxTotalProgress) {
+              return this.onProgressChange(aWebProgress, aRequest,
+                aCurSelfProgress, aMaxSelfProgress, aCurTotalProgress,
+                aMaxTotalProgress);
+            },
+
+            onStateChange: function (aWebProgress, aRequest, aStateFlags, aStatus) {
+              if (!aRequest)
+                return;
+
+              var oldBlank = this.mBlank;
+
+              const nsIWebProgressListener = Components.interfaces.nsIWebProgressListener;
+              const nsIChannel = Components.interfaces.nsIChannel;
+              let location, originalLocation;
+              try {
+                aRequest.QueryInterface(nsIChannel)
+                location = aRequest.URI;
+                originalLocation = aRequest.originalURI;
+              } catch (ex) {}
+
+              if (aStateFlags & nsIWebProgressListener.STATE_START) {
+                this.mRequestCount++;
+              }
+              else if (aStateFlags & nsIWebProgressListener.STATE_STOP) {
+                const NS_ERROR_UNKNOWN_HOST = 2152398878;
+                if (--this.mRequestCount > 0 && aStatus == NS_ERROR_UNKNOWN_HOST) {
+                  // to prevent bug 235825: wait for the request handled
+                  // by the automatic keyword resolver
+                  return;
+                }
+                // since we (try to) only handle STATE_STOP of the last request,
+                // the count of open requests should now be 0
+                this.mRequestCount = 0;
+              }
+
+              if (aStateFlags & nsIWebProgressListener.STATE_START &&
+                  aStateFlags & nsIWebProgressListener.STATE_IS_NETWORK) {
+                if (aWebProgress.isTopLevel)
+                  this.mBrowser.urlbarChangeTracker.startedLoad();
+
+                if (this._shouldShowProgress(aRequest)) {
+                  if (!(aStateFlags & nsIWebProgressListener.STATE_RESTORING)) {
+                    this.mTab.setAttribute("busy", "true");
+                    if (!gMultiProcessBrowser) {
+                      if (aWebProgress.isTopLevel &&
+                          !(this.mBrowser.docShell.loadType & Ci.nsIDocShell.LOAD_CMD_RELOAD))
+                        this.mTabBrowser.setTabTitleLoading(this.mTab);
+                    }
+                  }
+
+                  if (this.mTab.selected)
+                    this.mTabBrowser.mIsBusy = true;
+                }
+              }
+              else if (aStateFlags & nsIWebProgressListener.STATE_STOP &&
+                       aStateFlags & nsIWebProgressListener.STATE_IS_NETWORK) {
+
+                if (this.mTab.hasAttribute("busy")) {
+                  this.mTab.removeAttribute("busy");
+                  this.mTabBrowser._tabAttrModified(this.mTab, ["busy"]);
+                  if (!this.mTab.selected)
+                    this.mTab.setAttribute("unread", "true");
+                }
+                this.mTab.removeAttribute("progress");
+
+                if (aWebProgress.isTopLevel) {
+                  let isSuccessful = Components.isSuccessCode(aStatus);
+                  if (!isSuccessful && !isTabEmpty(this.mTab)) {
+                    // Restore the current document's location in case the
+                    // request was stopped (possibly from a content script)
+                    // before the location changed.
+
+                    this.mBrowser.userTypedValue = null;
+
+                    if (this.mTab.selected && gURLBar)
+                      URLBarSetURI();
+                  } else if (isSuccessful) {
+                    this.mBrowser.urlbarChangeTracker.finishedLoad();
+                  }
+
+                  if (!this.mBrowser.mIconURL)
+                    this.mTabBrowser.useDefaultIcon(this.mTab);
+                }
+
+                if (this.mBlank)
+                  this.mBlank = false;
+
+                // For keyword URIs clear the user typed value since they will be changed into real URIs
+                if (location.scheme == "keyword")
+                  this.mBrowser.userTypedValue = null;
+
+                if (this.mTab.label == this.mTabBrowser.mStringBundle.getString("tabs.connecting"))
+                  this.mTabBrowser.setTabTitle(this.mTab);
+
+                if (this.mTab.selected)
+                  this.mTabBrowser.mIsBusy = false;
+              }
+
+              if (oldBlank) {
+                this._callProgressListeners("onUpdateCurrentBrowser",
+                                            [aStateFlags, aStatus, "", 0],
+                                            true, false);
+              } else {
+                this._callProgressListeners("onStateChange",
+                                            [aWebProgress, aRequest, aStateFlags, aStatus],
+                                            true, false);
+              }
+
+              this._callProgressListeners("onStateChange",
+                                          [aWebProgress, aRequest, aStateFlags, aStatus],
+                                          false);
+
+              if (aStateFlags & (nsIWebProgressListener.STATE_START |
+                                 nsIWebProgressListener.STATE_STOP)) {
+                // reset cached temporary values at beginning and end
+                this.mMessage = "";
+                this.mTotalProgress = 0;
+              }
+              this.mStateFlags = aStateFlags;
+              this.mStatus = aStatus;
+            },
+
+            onLocationChange: function (aWebProgress, aRequest, aLocation,
+                                        aFlags) {
+              // OnLocationChange is called for both the top-level content
+              // and the subframes.
+              let topLevel = aWebProgress.isTopLevel;
+
+              if (topLevel) {
+                let isSameDocument =
+                  !!(aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT);
+                // We need to clear the typed value
+                // if the document failed to load, to make sure the urlbar reflects the
+                // failed URI (particularly for SSL errors). However, don't clear the value
+                // if the error page's URI is about:blank, because that causes complete
+                // loss of urlbar contents for invalid URI errors (see bug 867957).
+                if (this.mBrowser.didStartLoadSinceLastUserTyping() ||
+                    ((aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_ERROR_PAGE) &&
+                     aLocation.spec != "about:blank"))
+                  this.mBrowser.userTypedValue = null;
+
+                // If the browser was playing audio, we should remove the playing state.
+                if (this.mTab.hasAttribute("soundplaying") && !isSameDocument) {
+                  clearTimeout(this.mTab._soundPlayingAttrRemovalTimer);
+                  this.mTab._soundPlayingAttrRemovalTimer = 0;
+                  this.mTab.removeAttribute("soundplaying");
+                  this.mTabBrowser._tabAttrModified(this.mTab, ["soundplaying"]);
+                }
+
+                // If the browser was previously muted, we should restore the muted state.
+                if (this.mTab.hasAttribute("muted")) {
+                  this.mTab.linkedBrowser.mute();
+                }
+
+                // Don't clear the favicon if this onLocationChange was
+                // triggered by a pushState or a replaceState.  See bug 550565.
+                if (!gMultiProcessBrowser) {
+                  if (aWebProgress.isLoadingDocument &&
+                      !(this.mBrowser.docShell.loadType & Ci.nsIDocShell.LOAD_CMD_PUSHSTATE))
+                    this.mBrowser.mIconURL = null;
+                }
+
+                let autocomplete = this.mTabBrowser._placesAutocomplete;
+                if (this.mBrowser.registeredOpenURI) {
+                  autocomplete.unregisterOpenPage(this.mBrowser.registeredOpenURI);
+                  delete this.mBrowser.registeredOpenURI;
+                }
+                // Tabs in private windows aren't registered as "Open" so
+                // that they don't appear as switch-to-tab candidates.
+                if (!isBlankPageURL(aLocation.spec) &&
+                    (!PrivateBrowsingUtils.isWindowPrivate(window) ||
+                    PrivateBrowsingUtils.permanentPrivateBrowsing)) {
+                  autocomplete.registerOpenPage(aLocation);
+                  this.mBrowser.registeredOpenURI = aLocation;
+                }
+              }
+
+              if (!this.mBlank) {
+                this._callProgressListeners("onLocationChange",
+                                            [aWebProgress, aRequest, aLocation,
+                                             aFlags]);
+              }
+
+              if (topLevel) {
+                this.mBrowser.lastURI = aLocation;
+                this.mBrowser.lastLocationChange = Date.now();
+              }
+            },
+
+            onStatusChange: function (aWebProgress, aRequest, aStatus, aMessage) {
+              if (this.mBlank)
+                return;
+
+              this._callProgressListeners("onStatusChange",
+                                          [aWebProgress, aRequest, aStatus, aMessage]);
+
+              this.mMessage = aMessage;
+            },
+
+            onSecurityChange: function (aWebProgress, aRequest, aState) {
+              this._callProgressListeners("onSecurityChange",
+                                          [aWebProgress, aRequest, aState]);
+            },
+
+            onRefreshAttempted: function (aWebProgress, aURI, aDelay, aSameURI) {
+              return this._callProgressListeners("onRefreshAttempted",
+                                                 [aWebProgress, aURI, aDelay, aSameURI]);
+            },
+
+            QueryInterface: function (aIID) {
+              if (aIID.equals(Components.interfaces.nsIWebProgressListener) ||
+                  aIID.equals(Components.interfaces.nsIWebProgressListener2) ||
+                  aIID.equals(Components.interfaces.nsISupportsWeakReference) ||
+                  aIID.equals(Components.interfaces.nsISupports))
+                return this;
+              throw Components.results.NS_NOINTERFACE;
+            }
+          });
+        ]]>
+        </body>
+      </method>
+
+      <method name="setIcon">
+        <parameter name="aTab"/>
+        <parameter name="aURI"/>
+        <parameter name="aLoadingPrincipal"/>
+        <body>
+          <![CDATA[
+            let browser = this.getBrowserForTab(aTab);
+            browser.mIconURL = aURI instanceof Ci.nsIURI ? aURI.spec : aURI;
+
+            if (aURI && this.mFaviconService) {
+              if (!(aURI instanceof Ci.nsIURI)) {
+                aURI = makeURI(aURI);
+              }
+              // We do not serialize the principal from within SessionStore.jsm,
+              // hence if aLoadingPrincipal is null we default to the
+              // systemPrincipal which will allow the favicon to load.
+              let loadingPrincipal = aLoadingPrincipal
+                ? aLoadingPrincipal
+                : Services.scriptSecurityManager.getSystemPrincipal();
+              let loadType = PrivateBrowsingUtils.isWindowPrivate(window)
+                ? this.mFaviconService.FAVICON_LOAD_PRIVATE
+                : this.mFaviconService.FAVICON_LOAD_NON_PRIVATE;
+
+              this.mFaviconService.setAndFetchFaviconForPage(
+                browser.currentURI, aURI, false, loadType, null, loadingPrincipal);
+            }
+
+            let sizedIconUrl = browser.mIconURL || "";
+            if (sizedIconUrl != aTab.getAttribute("image")) {
+              if (sizedIconUrl)
+                aTab.setAttribute("image", sizedIconUrl);
+              else
+                aTab.removeAttribute("image");
+              this._tabAttrModified(aTab, ["image"]);
+            }
+
+            if (Services.prefs.getBoolPref("browser.chrome.favicons.process")) {
+              let favImage = new Image;
+              favImage.src = browser.mIconURL;
+              var tabBrowser = this;
+              favImage.onload = function () {
+                try {
+                  // Draw the icon on a hidden canvas
+                  var canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+                  var tabImg = document.getAnonymousElementByAttribute(aTab, "anonid", "tab-icon");
+                  var w = tabImg.boxObject.width;
+                  var h = tabImg.boxObject.height;
+                  canvas.width = w;
+                  canvas.height = h;
+                  var ctx = canvas.getContext('2d');
+                  ctx.drawImage(favImage, 0, 0, w, h);
+                  icon = canvas.toDataURL();
+                  browser.mIconURL = icon;
+                  aTab.setAttribute("image", icon);
+                }
+                catch (e) {
+                  console.warn("Processing of favicon failed.");
+                  // Canvas failed: icon remains as it was
+                }
+                tabBrowser._callProgressListeners(browser, "onLinkIconAvailable", [browser.mIconURL]);
+              }
+            }
+                
+            this._callProgressListeners(browser, "onLinkIconAvailable", [browser.mIconURL]);
+          ]]>
+        </body>
+      </method>
+
+      <method name="getIcon">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            let browser = aTab ? this.getBrowserForTab(aTab) : this.selectedBrowser;
+            return browser.mIconURL;
+          ]]>
+        </body>
+      </method>
+
+      <method name="shouldLoadFavIcon">
+        <parameter name="aURI"/>
+        <body>
+          <![CDATA[
+            return (aURI &&
+                    Services.prefs.getBoolPref("browser.chrome.site_icons") &&
+                    Services.prefs.getBoolPref("browser.chrome.favicons") &&
+                    ("schemeIs" in aURI) && (aURI.schemeIs("http") || aURI.schemeIs("https")));
+          ]]>
+        </body>
+      </method>
+
+      <method name="useDefaultIcon">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            // Bug 691610 - e10s support for useDefaultIcon
+            if (gMultiProcessBrowser)
+              return;
+
+            var browser = this.getBrowserForTab(aTab);
+            var docURIObject = browser.contentDocument.documentURIObject;
+            var icon = null;
+            <!-- Pale Moon: new image icon method, see bug #305986 -->
+            let req = browser.contentDocument.imageRequest;
+            let sz = Services.prefs.getIntPref("browser.chrome.image_icons.max_size");
+            if (browser.contentDocument instanceof ImageDocument && 
+                req && req.image) {
+              if (Services.prefs.getBoolPref("browser.chrome.site_icons") && sz) {
+                try {
+                  <!-- Main method: draw on a hidden canvas -->
+                  var canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+                  var tabImg = document.getAnonymousElementByAttribute(aTab, "anonid", "tab-icon");
+                  var w = tabImg.boxObject.width;
+                  var h = tabImg.boxObject.height;
+                  canvas.width = w;
+                  canvas.height = h;
+                  var ctx = canvas.getContext('2d');
+                  ctx.drawImage(browser.contentDocument.body.firstChild, 0, 0, w, h);
+                  icon = canvas.toDataURL();
+                }
+                catch (e) { 
+                  <!-- Fallback method in case canvas method fails, restricted by sz -->
+                  try {
+                  
+                    if (req &&
+                        req.image &&
+                        req.image.width <= sz &&
+                        req.image.height <= sz)
+                      icon = browser.currentURI;
+                  } 
+                  catch (e) { 
+                    <!-- Both methods fail (very large or corrupt image): icon remains null -->
+                  }
+                }
+              }
+            }
+            // Use documentURIObject in the check for shouldLoadFavIcon so that we
+            // do the right thing with about:-style error pages.  Bug 453442
+            else if (this.shouldLoadFavIcon(docURIObject)) {
+              let url = docURIObject.prePath + "/favicon.ico";
+              if (!this.isFailedIcon(url))
+                icon = url;
+            }
+            this.setIcon(aTab, icon, browser.contentPrincipal);
+          ]]>
+        </body>
+      </method>
+
+      <method name="isFailedIcon">
+        <parameter name="aURI"/>
+        <body>
+          <![CDATA[
+            if (this.mFaviconService) {
+              if (!(aURI instanceof Ci.nsIURI))
+                aURI = makeURI(aURI);
+              return this.mFaviconService.isFailedFavicon(aURI);
+            }
+            return null;
+          ]]>
+        </body>
+      </method>
+
+      <method name="getWindowTitleForBrowser">
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            var newTitle = "";
+            var docElement = this.ownerDocument.documentElement;
+            var sep = docElement.getAttribute("titlemenuseparator");
+
+            // Strip out any null bytes in the content title, since the
+            // underlying widget implementations of nsWindow::SetTitle pass
+            // null-terminated strings to system APIs.
+            var docTitle = aBrowser.contentTitle.replace("\0", "", "g");
+
+            if (!docTitle)
+              docTitle = docElement.getAttribute("titledefault");
+
+            var modifier = docElement.getAttribute("titlemodifier");
+            if (docTitle) {
+              newTitle += docElement.getAttribute("titlepreface");
+              newTitle += docTitle;
+              if (modifier)
+                newTitle += sep;
+            }
+            newTitle += modifier;
+
+            // If location bar is hidden and the URL type supports a host,
+            // add the scheme and host to the title to prevent spoofing.
+            // XXX https://bugzilla.mozilla.org/show_bug.cgi?id=22183#c239
+            try {
+              if (docElement.getAttribute("chromehidden").includes("location")) {
+                var uri = this.mURIFixup.createExposableURI(
+                            aBrowser.currentURI);
+                if (uri.scheme == "about")
+                  newTitle = uri.spec + sep + newTitle;
+                else
+                  newTitle = uri.prePath + sep + newTitle;
+              }
+            } catch (e) {}
+
+            return newTitle;
+          ]]>
+        </body>
+      </method>
+
+      <method name="freezeTitlebar">
+        <parameter name="aTitle"/>
+        <body>
+          <![CDATA[
+            this._frozenTitle = aTitle || "";
+            this.updateTitlebar();
+          ]]>
+        </body>
+      </method>
+
+      <method name="unfreezeTitlebar">
+        <body>
+          <![CDATA[
+            this._frozenTitle = "";
+            this.updateTitlebar();
+          ]]>
+        </body>
+      </method>
+
+      <method name="updateTitlebar">
+        <body>
+          <![CDATA[
+            this.ownerDocument.title = this._frozenTitle ||
+              this.getWindowTitleForBrowser(this.mCurrentBrowser);
+          ]]>
+        </body>
+      </method>
+
+      <method name="updateCurrentBrowser">
+        <parameter name="aForceUpdate"/>
+        <body>
+          <![CDATA[
+            var newBrowser = this.getBrowserAtIndex(this.tabContainer.selectedIndex);
+            if (this.mCurrentBrowser == newBrowser && !aForceUpdate)
+              return;
+
+            if (!aForceUpdate) {
+              window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils)
+                                                             .beginTabSwitch();
+            }
+
+            var oldTab = this.mCurrentTab;
+
+            // Preview mode should not reset the owner
+            if (!this._previewMode && !oldTab.selected)
+              oldTab.owner = null;
+
+            if (this._lastRelatedTab) {
+              if (!this._lastRelatedTab.selected)
+                this._lastRelatedTab.owner = null;
+              this._lastRelatedTab = null;
+            }
+
+            var oldBrowser = this.mCurrentBrowser;
+            if (oldBrowser) {
+              oldBrowser.setAttribute("type", "content-targetable");
+              oldBrowser.docShellIsActive = false;
+              this.finder.mListeners.forEach(l => oldBrowser.finder.removeResultListener(l));
+            }
+
+            var updateBlockedPopups = false;
+            if (!oldBrowser ||
+                (oldBrowser.blockedPopups && !newBrowser.blockedPopups) ||
+                (!oldBrowser.blockedPopups && newBrowser.blockedPopups))
+              updateBlockedPopups = true;
+
+            newBrowser.setAttribute("type", "content-primary");
+            newBrowser.docShellIsActive =
+              (window.windowState != window.STATE_MINIMIZED);
+            this.mCurrentBrowser = newBrowser;
+            this.mCurrentTab = this.tabContainer.selectedItem;
+            this.finder.mListeners.forEach(l => this.mCurrentBrowser.finder.addResultListener(l));
+            this.showTab(this.mCurrentTab);
+
+            var backForwardContainer = document.getElementById("unified-back-forward-button");
+            if (backForwardContainer) {
+              backForwardContainer.setAttribute("switchingtabs", "true");
+              window.addEventListener("MozAfterPaint", function removeSwitchingtabsAttr() {
+                window.removeEventListener("MozAfterPaint", removeSwitchingtabsAttr);
+                backForwardContainer.removeAttribute("switchingtabs");
+              });
+            }
+
+            if (updateBlockedPopups)
+              this.mCurrentBrowser.updateBlockedPopups();
+
+            // Update the URL bar.
+            var loc = this.mCurrentBrowser.currentURI;
+
+            // Bug 666809 - SecurityUI support for e10s
+            var webProgress = this.mCurrentBrowser.webProgress;
+            var securityUI = this.mCurrentBrowser.securityUI;
+            
+            // Update global findbar with new content browser
+            if (gFindBarInitialized) {
+              gFindBar.browser = newBrowser;
+            }
+
+            this._callProgressListeners(null, "onLocationChange",
+                                        [webProgress, null, loc, 0], true,
+                                        false);
+
+            if (securityUI) {
+              this._callProgressListeners(null, "onSecurityChange",
+                                          [webProgress, null, securityUI.state], true, false);
+            }
+
+            var listener = this.mTabListeners[this.tabContainer.selectedIndex] || null;
+            if (listener && listener.mStateFlags) {
+              this._callProgressListeners(null, "onUpdateCurrentBrowser",
+                                          [listener.mStateFlags, listener.mStatus,
+                                           listener.mMessage, listener.mTotalProgress],
+                                          true, false);
+            }
+
+            if (!this._previewMode) {
+              this.mCurrentTab.removeAttribute("unread");
+              this.selectedTab.lastAccessed = Date.now();
+
+              // Bug 666816 - TypeAheadFind support for e10s
+              if (!gMultiProcessBrowser)
+                this._fastFind.setDocShell(this.mCurrentBrowser.docShell);
+
+              this.updateTitlebar();
+
+              this.mCurrentTab.removeAttribute("titlechanged");
+            }
+
+            // If the new tab is busy, and our current state is not busy, then
+            // we need to fire a start to all progress listeners.
+            const nsIWebProgressListener = Components.interfaces.nsIWebProgressListener;
+            if (this.mCurrentTab.hasAttribute("busy") && !this.mIsBusy) {
+              this.mIsBusy = true;
+              this._callProgressListeners(null, "onStateChange",
+                                          [webProgress, null,
+                                           nsIWebProgressListener.STATE_START |
+                                           nsIWebProgressListener.STATE_IS_NETWORK, 0],
+                                          true, false);
+            }
+
+            // If the new tab is not busy, and our current state is busy, then
+            // we need to fire a stop to all progress listeners.
+            if (!this.mCurrentTab.hasAttribute("busy") && this.mIsBusy) {
+              this.mIsBusy = false;
+              this._callProgressListeners(null, "onStateChange",
+                                          [webProgress, null,
+                                           nsIWebProgressListener.STATE_STOP |
+                                           nsIWebProgressListener.STATE_IS_NETWORK, 0],
+                                          true, false);
+            }
+
+            this._setCloseKeyState(!this.mCurrentTab.pinned);
+
+            // TabSelect events are suppressed during preview mode to avoid confusing extensions and other bits of code
+            // that might rely upon the other changes suppressed.
+            // Focus is suppressed in the event that the main browser window is minimized - focusing a tab would restore the window
+            if (!this._previewMode) {
+              // We've selected the new tab, so go ahead and notify listeners.
+              let event = new CustomEvent("TabSelect", {
+                bubbles: true,
+                cancelable: false,
+                detail: {
+                  previousTab: oldTab
+                }
+              });
+              this.mCurrentTab.dispatchEvent(event);
+
+              this._tabAttrModified(oldTab, ["selected"]);
+              this._tabAttrModified(this.mCurrentTab, ["selected"]);
+
+              // Adjust focus
+              oldBrowser._urlbarFocused = (gURLBar && gURLBar.focused);
+              do {
+                // When focus is in the tab bar, retain it there.
+                if (document.activeElement == oldTab) {
+                  // We need to explicitly focus the new tab, because
+                  // tabbox.xml does this only in some cases.
+                  this.mCurrentTab.focus();
+                  break;
+                }
+
+                // If there's a tabmodal prompt showing, focus it.
+                if (newBrowser.hasAttribute("tabmodalPromptShowing")) {
+                  let XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+                  let prompts = newBrowser.parentNode.getElementsByTagNameNS(XUL_NS, "tabmodalprompt");
+                  let prompt = prompts[prompts.length - 1];
+                  prompt.Dialog.setDefaultFocus();
+                  break;
+                }
+
+                // Focus the location bar if it was previously focused for that tab.
+                // In full screen mode, only bother making the location bar visible
+                // if the tab is a blank one.
+                if (newBrowser._urlbarFocused && gURLBar) {
+
+                  // Explicitly close the popup if the URL bar retains focus
+                  gURLBar.closePopup();
+
+                  if (!window.fullScreen) {
+                    gURLBar.focus();
+                    break;
+                  } else if (isTabEmpty(this.mCurrentTab)) {
+                    focusAndSelectUrlBar();
+                    break;
+                  }
+                }
+
+                // If the find bar is focused, keep it focused.
+                if (gFindBarInitialized &&
+                    !gFindBar.hidden &&
+                    gFindBar.getElement("findbar-textbox").getAttribute("focused") == "true")
+                  break;
+
+                // Otherwise, focus the content area.
+                let fm = Cc["@mozilla.org/focus-manager;1"].getService(Ci.nsIFocusManager);
+                let focusFlags = fm.FLAG_NOSCROLL;
+
+                if (!gMultiProcessBrowser) {
+                  let newFocusedElement = fm.getFocusedElementForWindow(window.content, true, {});
+
+                  // for anchors, use FLAG_SHOWRING so that it is clear what link was
+                  // last clicked when switching back to that tab
+                  if (newFocusedElement &&
+                      (newFocusedElement instanceof HTMLAnchorElement ||
+                       newFocusedElement.getAttributeNS("http://www.w3.org/1999/xlink", "type") == "simple"))
+                    focusFlags |= fm.FLAG_SHOWRING;
+                }
+                fm.setFocus(newBrowser, focusFlags);
+              } while (false);
+            }
+
+            this.tabContainer._setPositionalAttributes();
+          ]]>
+        </body>
+      </method>
+
+      <method name="_tabAttrModified">
+        <parameter name="aTab"/>
+        <parameter name="aChanged"/>
+        <body><![CDATA[
+          if (aTab.closing)
+            return;
+
+          let event = new CustomEvent("TabAttrModified", {
+            bubbles: true,
+            cancelable: false,
+            detail: {
+              changed: aChanged,
+            }
+          });
+          aTab.dispatchEvent(event);
+        ]]></body>
+      </method>
+
+      <method name="setTabTitleLoading">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            aTab.label = this.mStringBundle.getString("tabs.connecting");
+            aTab.crop = "end";
+            this._tabAttrModified(aTab, ["label", "crop"]);
+          ]]>
+        </body>
+      </method>
+
+      <method name="setTabTitle">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            var browser = this.getBrowserForTab(aTab);
+            var crop = "end";
+            var title = browser.contentTitle;
+
+            if (!title) {
+              if (browser.currentURI.spec) {
+                try {
+                  title = this.mURIFixup.createExposableURI(browser.currentURI).spec;
+                } catch(ex) {
+                  title = browser.currentURI.spec;
+                }
+              }
+
+              if (title && !isBlankPageURL(title)) {
+                // At this point, we now have a URI.
+                // Let's try to unescape it using a character set
+                // in case the URI is not ASCII.
+                try {
+                  var characterSet = browser.characterSet;
+                  const textToSubURI = Components.classes["@mozilla.org/intl/texttosuburi;1"]
+                                                 .getService(Components.interfaces.nsITextToSubURI);
+                  title = textToSubURI.unEscapeNonAsciiURI(characterSet, title);
+                } catch(ex) { /* Do nothing. */ }
+
+                crop = "center";
+
+              } else // Still no title?  Fall back to our untitled string.
+                title = this.mStringBundle.getString("tabs.emptyTabTitle");
+            }
+
+            if (aTab.label == title &&
+                aTab.crop == crop)
+              return false;
+
+            aTab.label = title;
+            aTab.crop = crop;
+            this._tabAttrModified(aTab, ["label", "crop"]);
+
+            if (aTab.selected)
+              this.updateTitlebar();
+
+            return true;
+          ]]>
+        </body>
+      </method>
+
+      <method name="loadOneTab">
+        <parameter name="aURI"/>
+        <parameter name="aReferrerURI"/>
+        <parameter name="aCharset"/>
+        <parameter name="aPostData"/>
+        <parameter name="aLoadInBackground"/>
+        <parameter name="aAllowThirdPartyFixup"/>
+        <body>
+          <![CDATA[
+            var aTriggeringPrincipal;
+            var aReferrerPolicy;
+            var aFromExternal;
+            var aRelatedToCurrent;
+            var aOriginPrincipal;
+            var aOpener;
+            if (arguments.length == 2 &&
+                typeof arguments[1] == "object" &&
+                !(arguments[1] instanceof Ci.nsIURI)) {
+              let params = arguments[1];
+              aTriggeringPrincipal  = params.triggeringPrincipal;
+              aReferrerURI          = params.referrerURI;
+              aReferrerPolicy       = params.referrerPolicy;
+              aCharset              = params.charset;
+              aPostData             = params.postData;
+              aLoadInBackground     = params.inBackground;
+              aAllowThirdPartyFixup = params.allowThirdPartyFixup;
+              aFromExternal         = params.fromExternal;
+              aRelatedToCurrent     = params.relatedToCurrent;
+              aOriginPrincipal      = params.originPrincipal;
+              aOpener               = params.opener;
+            }
+
+            var bgLoad = (aLoadInBackground != null) ? aLoadInBackground :
+                         Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+            var owner = bgLoad ? null : this.selectedTab;
+            var tab = this.addTab(aURI, {
+                                  triggeringPrincipal: aTriggeringPrincipal,
+                                  referrerURI: aReferrerURI,
+                                  referrerPolicy: aReferrerPolicy,
+                                  charset: aCharset,
+                                  postData: aPostData,
+                                  ownerTab: owner,
+                                  allowThirdPartyFixup: aAllowThirdPartyFixup,
+                                  fromExternal: aFromExternal,
+                                  originPrincipal: aOriginPrincipal,
+                                  relatedToCurrent: aRelatedToCurrent,
+                                  opener: aOpener });
+            if (!bgLoad)
+              this.selectedTab = tab;
+
+            return tab;
+         ]]>
+        </body>
+      </method>
+
+      <method name="loadTabs">
+        <parameter name="aURIs"/>
+        <parameter name="aLoadInBackground"/>
+        <parameter name="aReplace"/>
+        <body><![CDATA[
+          let aAllowThirdPartyFixup;
+          let aTargetTab;
+          let aNewIndex = -1;
+          let aPostDatas = [];
+          if (arguments.length == 2 &&
+              typeof arguments[1] == "object") {
+            let params = arguments[1];
+            aLoadInBackground     = params.inBackground;
+            aReplace              = params.replace;
+            aAllowThirdPartyFixup = params.allowThirdPartyFixup;
+            aTargetTab            = params.targetTab;
+            aNewIndex             = typeof params.newIndex === "number" ?
+                                    params.newIndex : aNewIndex;
+            aPostDatas            = params.postDatas || aPostDatas;
+          }
+
+          if (!aURIs.length)
+            return;
+
+          // The tab selected after this new tab is closed (i.e. the new tab's
+          // "owner") is the next adjacent tab (i.e. not the previously viewed tab)
+          // when several urls are opened here (i.e. closing the first should select
+          // the next of many URLs opened) or if the pref to have UI links opened in
+          // the background is set (i.e. the link is not being opened modally)
+          //
+          // i.e.
+          //    Number of URLs    Load UI Links in BG       Focus Last Viewed?
+          //    == 1              false                     YES
+          //    == 1              true                      NO
+          //    > 1               false/true                NO
+          var multiple = aURIs.length > 1;
+          var owner = multiple || aLoadInBackground ? null : this.selectedTab;
+          var firstTabAdded = null;
+          var targetTabIndex = -1;
+
+          if (aReplace) {
+            let browser;
+            if (aTargetTab) {
+              browser = this.getBrowserForTab(aTargetTab);
+              targetTabIndex = aTargetTab._tPos;
+            } else {
+              browser = this.mCurrentBrowser;
+              targetTabIndex = this.tabContainer.selectedIndex;
+            }
+            let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+            if (aAllowThirdPartyFixup) {
+              flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
+                       Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+            }
+            try {
+              browser.loadURIWithFlags(aURIs[0], {
+                flags, postData: aPostDatas[0]
+              });
+            } catch (e) {
+              // Ignore failure in case a URI is wrong, so we can continue
+              // opening the next ones.
+            }
+          } else {
+            firstTabAdded = this.addTab(aURIs[0], {
+              ownerTab: owner,
+              skipAnimation: multiple,
+              allowThirdPartyFixup: aAllowThirdPartyFixup,
+              postData: aPostDatas[0]
+            });
+            if (aNewIndex !== -1) {
+              this.moveTabTo(firstTabAdded, aNewIndex);
+              targetTabIndex = firstTabAdded._tPos;
+            }
+          }
+
+          let tabNum = targetTabIndex;
+          for (let i = 1; i < aURIs.length; ++i) {
+            let tab = this.addTab(aURIs[i], {
+              skipAnimation: true,
+              allowThirdPartyFixup: aAllowThirdPartyFixup,
+              postData: aPostDatas[i]
+            });
+            if (targetTabIndex !== -1)
+              this.moveTabTo(tab, ++tabNum);
+          }
+
+          if (!aLoadInBackground) {
+            if (firstTabAdded) {
+              // .selectedTab setter focuses the content area
+              this.selectedTab = firstTabAdded;
+            }
+            else
+              this.selectedBrowser.focus();
+          }
+        ]]></body>
+      </method>
+
+      <method name="addTab">
+        <parameter name="aURI"/>
+        <parameter name="aReferrerURI"/>
+        <parameter name="aCharset"/>
+        <parameter name="aPostData"/>
+        <parameter name="aOwner"/>
+        <parameter name="aAllowThirdPartyFixup"/>
+        <body>
+          <![CDATA[
+            const NS_XUL = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+            var aTriggeringPrincipal;
+            var aReferrerPolicy;
+            var aFromExternal;
+            var aRelatedToCurrent;
+            var aSkipAnimation;
+            var aOriginPrincipal;
+            var aSkipBackgroundNotify;
+            var aOpener;
+            if (arguments.length == 2 &&
+                typeof arguments[1] == "object" &&
+                !(arguments[1] instanceof Ci.nsIURI)) {
+              let params = arguments[1];
+              aTriggeringPrincipal  = params.triggeringPrincipal;
+              aReferrerURI          = params.referrerURI;
+              aReferrerPolicy       = params.referrerPolicy;
+              aCharset              = params.charset;
+              aPostData             = params.postData;
+              aOwner                = params.ownerTab;
+              aAllowThirdPartyFixup = params.allowThirdPartyFixup;
+              aFromExternal         = params.fromExternal;
+              aRelatedToCurrent     = params.relatedToCurrent;
+              aSkipAnimation        = params.skipAnimation;
+              aOriginPrincipal      = params.originPrincipal;
+              aOpener               = params.opener;
+              aSkipBackgroundNotify = params.skipBackgroundNotify;
+            }
+
+            // if we're adding tabs, we're past interrupt mode, ditch the owner
+            if (this.mCurrentTab.owner)
+              this.mCurrentTab.owner = null;
+
+            var t = document.createElementNS(NS_XUL, "tab");
+
+            let aURIObject = null;
+            try {
+              aURIObject = Services.io.newURI(aURI || "about:blank");
+            } catch (ex) { /* we'll try to fix up this URL later */ }
+
+            var uriIsAboutBlank = !aURI || aURI == "about:blank";
+
+            if (!aURI || isBlankPageURL(aURI))
+              t.setAttribute("label", this.mStringBundle.getString("tabs.emptyTabTitle"));
+            else
+              t.setAttribute("label", aURI);
+
+            t.setAttribute("crop", "end");
+            t.setAttribute("validate", "never"); //PMed
+            t.setAttribute("onerror", "this.removeAttribute('image');");
+
+            if (aSkipBackgroundNotify) {
+              t.setAttribute("skipbackgroundnotify", true);
+            }
+
+            t.className = "tabbrowser-tab";
+
+            this.tabContainer._unlockTabSizing();
+
+            // When overflowing, new tabs are scrolled into view smoothly, which
+            // doesn't go well together with the width transition. So we skip the
+            // transition in that case.
+            let animate = !aSkipAnimation &&
+                          this.tabContainer.getAttribute("overflow") != "true" &&
+                          Services.prefs.getBoolPref("browser.tabs.animate");
+            if (!animate) {
+              t.setAttribute("fadein", "true");
+              setTimeout(function (tabContainer) {
+                tabContainer._handleNewTab(t);
+              }, 0, this.tabContainer);
+            }
+
+            // invalidate caches
+            this._browsers = null;
+            this._visibleTabs = null;
+
+            this.tabContainer.appendChild(t);
+
+            // If this new tab is owned by another, assert that relationship
+            if (aOwner)
+              t.owner = aOwner;
+
+            var b = document.createElementNS(
+              "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul",
+                                             "browser");
+            b.setAttribute("type", "content-targetable");
+            b.setAttribute("message", "true");
+            b.setAttribute("contextmenu", this.getAttribute("contentcontextmenu"));
+            b.setAttribute("tooltip", this.getAttribute("contenttooltip"));
+
+            if (Services.prefs.getPrefType("browser.tabs.remote") == Services.prefs.PREF_BOOL &&
+                Services.prefs.getBoolPref("browser.tabs.remote")) {
+              b.setAttribute("remote", "true");
+            }
+
+            if (window.gShowPageResizers && document.getElementById("addon-bar").collapsed &&
+                window.windowState == window.STATE_NORMAL) {
+              b.setAttribute("showresizer", "true");
+            }
+
+            if (aOpener) {
+              b.QueryInterface(Ci.nsIFrameLoaderOwner).presetOpenerWindow(aOpener);
+            }
+
+            if (this.hasAttribute("autocompletepopup"))
+              b.setAttribute("autocompletepopup", this.getAttribute("autocompletepopup"));
+            b.setAttribute("autoscrollpopup", this._autoScrollPopup.id);
+
+            if (this.hasAttribute("datetimepicker")) {
+              b.setAttribute("datetimepicker", this.getAttribute("datetimepicker"));
+            }
+            
+            if (this.hasAttribute("authdosprotected")) {
+              b.setAttribute("authdosprotected", this.getAttribute("authdosprotected"));
+            }
+
+            // Create the browserStack container
+            var stack = document.createElementNS(NS_XUL, "stack");
+            stack.className = "browserStack";
+            stack.appendChild(b);
+            stack.setAttribute("flex", "1");
+
+            // Create the browserContainer
+            var browserContainer = document.createElementNS(NS_XUL, "vbox");
+            browserContainer.className = "browserContainer";
+            browserContainer.appendChild(stack);
+            browserContainer.setAttribute("flex", "1");
+
+            // Create the sidebar container
+            var browserSidebarContainer = document.createElementNS(NS_XUL,
+                                                                   "hbox");
+            browserSidebarContainer.className = "browserSidebarContainer";
+            browserSidebarContainer.appendChild(browserContainer);
+            browserSidebarContainer.setAttribute("flex", "1");
+
+            // Add the Message and the Browser to the box
+            var notificationbox = document.createElementNS(NS_XUL,
+                                                           "notificationbox");
+            notificationbox.setAttribute("flex", "1");
+            notificationbox.appendChild(browserSidebarContainer);
+
+            var position = this.tabs.length - 1;
+            var uniqueId = "panel" + Date.now() + position;
+            notificationbox.id = uniqueId;
+            t.linkedPanel = uniqueId;
+            t.linkedBrowser = b;
+            this._tabForBrowser.set(b, t);
+            t._tPos = position;
+            this.tabContainer._setPositionalAttributes();
+
+            // Prevent the superfluous initial load of a blank document
+            // if we're going to load something other than about:blank.
+            if (!uriIsAboutBlank) {
+              b.setAttribute("nodefaultsrc", "true");
+            }
+
+            // NB: this appendChild call causes us to run constructors for the
+            // browser element, which fires off a bunch of notifications. Some
+            // of those notifications can cause code to run that inspects our
+            // state, so it is important that the tab element is fully
+            // initialized by this point.
+            this.mPanelContainer.appendChild(notificationbox);
+
+            this.tabContainer.updateVisibility();
+
+            // wire up a progress listener for the new browser object.
+            var tabListener = this.mTabProgressListener(t, b, uriIsAboutBlank);
+            const filter = Components.classes["@mozilla.org/appshell/component/browser-status-filter;1"]
+                                     .createInstance(Components.interfaces.nsIWebProgress);
+            filter.addProgressListener(tabListener, Components.interfaces.nsIWebProgress.NOTIFY_ALL);
+            b.webProgress.addProgressListener(filter, Components.interfaces.nsIWebProgress.NOTIFY_ALL);
+            this.mTabListeners[position] = tabListener;
+            this.mTabFilters[position] = filter;
+
+            b._fastFind = this.fastFind;
+            b.droppedLinkHandler = handleDroppedLink;
+
+            // If we just created a new tab that loads the default
+            // newtab url, swap in a preloaded page if possible.
+            // Do nothing if we're a private window.
+            let docShellsSwapped = false;
+            if (aURI == BROWSER_NEW_TAB_URL &&
+                !PrivateBrowsingUtils.isWindowPrivate(window)) {
+              docShellsSwapped = gBrowserNewTabPreloader.newTab(t);
+            }
+
+            // Dispatch a new tab notification.  We do this once we're
+            // entirely done, so that things are in a consistent state
+            // even if the event listener opens or closes tabs.
+            var evt = document.createEvent("Events");
+            evt.initEvent("TabOpen", true, false);
+            t.dispatchEvent(evt);
+
+            if (aOriginPrincipal && aURI) {
+              let {URI_INHERITS_SECURITY_CONTEXT} = Ci.nsIProtocolHandler;
+              // Unless we know for sure we're not inheriting principals,
+              // force the about:blank viewer to have the right principal:
+              if (!aURIObject ||
+                  (Services.io.getProtocolFlags(aURIObject.scheme) & URI_INHERITS_SECURITY_CONTEXT)) {
+                b.createAboutBlankContentViewer(aOriginPrincipal);
+              }
+            }
+
+            // If we didn't swap docShells with a preloaded browser
+            // then let's just continue loading the page normally.
+            if (!docShellsSwapped && !uriIsAboutBlank) {
+              // pretend the user typed this so it'll be available till
+              // the document successfully loads
+              if (aURI && gInitialPages.indexOf(aURI) == -1)
+                b.userTypedValue = aURI;
+
+              let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+              if (aAllowThirdPartyFixup) {
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+              }
+              if (aFromExternal)
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FROM_EXTERNAL;
+              try {
+                b.loadURIWithFlags(aURI, {
+                                   flags: flags,
+                                   triggeringPrincipal: aTriggeringPrincipal,
+                                   referrerURI: aReferrerURI,
+                                   referrerPolicy: aReferrerPolicy,
+                                   charset: aCharset,
+                                   postData: aPostData,
+                                   });
+              } catch (ex) {
+                Cu.reportError(ex);
+              }
+            }
+
+            // We start our browsers out as inactive, and then maintain
+            // activeness in the tab switcher.
+            b.docShellIsActive = false;
+
+            // When addTab() is called with an URL that is not "about:blank" we
+            // set the "nodefaultsrc" attribute that prevents a frameLoader
+            // from being created as soon as the linked <browser> is inserted
+            // into the DOM. We thus have to register the new outerWindowID
+            // for non-remote browsers after we have called browser.loadURI().
+            //
+            // Note: Only do this of we still have a docShell. The TabOpen
+            // event was dispatched above and a gBrowser.removeTab() call from
+            // one of its listeners could cause us to fail here.
+            if (Services.prefs.getPrefType("browser.tabs.remote") == Services.prefs.PREF_BOOL &&
+               !Services.prefs.getBoolPref("browser.tabs.remote")
+               && b.docShell) {
+              this._outerWindowIDBrowserMap.set(b.outerWindowID, b);
+            }
+
+            // Check if we're opening a tab related to the current tab and
+            // move it to after the current tab.
+            // aReferrerURI is null or undefined if the tab is opened from
+            // an external application or bookmark, i.e. somewhere other
+            // than the current tab.
+            if ((aRelatedToCurrent == null ? aReferrerURI : aRelatedToCurrent) &&
+                Services.prefs.getBoolPref("browser.tabs.insertRelatedAfterCurrent")) {
+              let newTabPos = (this._lastRelatedTab ||
+                               this.selectedTab)._tPos + 1;
+              if (this._lastRelatedTab)
+                this._lastRelatedTab.owner = null;
+              else
+                t.owner = this.selectedTab;
+              this.moveTabTo(t, newTabPos);
+              this._lastRelatedTab = t;
+            }
+
+            if (animate) {
+              requestAnimationFrame(function () {
+                this.tabContainer._handleTabTelemetryStart(t, aURI);
+
+                // kick the animation off
+                t.setAttribute("fadein", "true");
+
+                // This call to adjustTabstrip is redundant but needed so that
+                // when opening a second tab, the first tab's close buttons
+                // appears immediately rather than when the transition ends.
+                if (this.tabs.length - this._removingTabs.length == 2)
+                  this.tabContainer.adjustTabstrip();
+              }.bind(this));
+            }
+
+            return t;
+          ]]>
+        </body>
+      </method>
+
+      <method name="warnAboutClosingTabs">
+      <parameter name="aCloseTabs"/>
+      <parameter name="aTab"/>
+      <body>
+        <![CDATA[
+          var tabsToClose;
+          switch (aCloseTabs) {
+            case this.closingTabsEnum.ALL:
+              // If there are multiple windows, pinned tabs will be closed, so
+              // we warn about them, too; if there is just one window, pinned
+              // tabs should come back on restart, so exclude them from warning.
+              var numberOfWindows = 0;
+              var browserEnum = Services.wm.getEnumerator("navigator:browser");
+              while (browserEnum.hasMoreElements() && numberOfWindows < 2) {
+                numberOfWindows++;
+                browserEnum.getNext();
+              }
+              if (numberOfWindows > 1) {
+                tabsToClose = this.tabs.length - this._removingTabs.length
+              }
+              else {
+                tabsToClose = this.tabs.length - this._removingTabs.length -
+                              gBrowser._numPinnedTabs;
+              }
+              break;
+            case this.closingTabsEnum.OTHER:
+              tabsToClose = this.visibleTabs.length - 1 - gBrowser._numPinnedTabs;
+              break;
+            case this.closingTabsEnum.TO_END:
+              if (!aTab)
+                throw new Error("Required argument missing: aTab");
+
+              tabsToClose = this.getTabsToTheEndFrom(aTab).length;
+              break;
+            default:
+              throw new Error("Invalid argument: " + aCloseTabs);
+          }
+
+          if (tabsToClose <= 1)
+            return true;
+
+          const pref = aCloseTabs == this.closingTabsEnum.ALL ?
+                       "browser.tabs.warnOnClose" : "browser.tabs.warnOnCloseOtherTabs";
+          var shouldPrompt = Services.prefs.getBoolPref(pref);
+          if (!shouldPrompt)
+            return true;
+
+          var ps = Services.prompt;
+
+          // default to true: if it were false, we wouldn't get this far
+          var warnOnClose = { value: true };
+          var bundle = this.mStringBundle;
+
+          // focus the window before prompting.
+          // this will raise any minimized window, which will
+          // make it obvious which window the prompt is for and will
+          // solve the problem of windows "obscuring" the prompt.
+          // see bug #350299 for more details
+          window.focus();
+          var buttonPressed =
+            ps.confirmEx(window,
+                         bundle.getString("tabs.closeWarningTitle"),
+                         bundle.getFormattedString("tabs.closeWarningMultipleTabs",
+                                                   [tabsToClose]),
+                         (ps.BUTTON_TITLE_IS_STRING * ps.BUTTON_POS_0)
+                         + (ps.BUTTON_TITLE_CANCEL * ps.BUTTON_POS_1),
+                         bundle.getString("tabs.closeButtonMultiple"),
+                         null, null,
+                         aCloseTabs == this.closingTabsEnum.ALL ?
+                           bundle.getString("tabs.closeWarningPromptMe") : null,
+                         warnOnClose);
+          var reallyClose = (buttonPressed == 0);
+
+          // don't set the prefs unless they press OK and have unchecked the box
+          if (aCloseTabs == this.closingTabsEnum.ALL && reallyClose && !warnOnClose.value) {
+            Services.prefs.setBoolPref("browser.tabs.warnOnClose", false);
+				Services.prefs.setBoolPref("browser.tabs.warnOnCloseOtherTabs", false);
+				}
+          return reallyClose;
+        ]]>
+      </body>
+      </method>
+
+      <method name="getTabsToTheEndFrom">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            var tabsToEnd = [];
+            let tabs = this.visibleTabs;
+            for (let i = tabs.length - 1; tabs[i] != aTab && i >= 0; --i) {
+              tabsToEnd.push(tabs[i]);
+            }
+            return tabsToEnd.reverse();
+          ]]>
+        </body>
+      </method>
+
+      <method name="removeTabsToTheEndFrom">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            if (this.warnAboutClosingTabs(this.closingTabsEnum.TO_END, aTab)) {
+              let tabs = this.getTabsToTheEndFrom(aTab);
+              for (let i = tabs.length - 1; i >= 0; --i) {
+                this.removeTab(tabs[i], {animate: true});
+              }
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="removeAllTabsBut">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            if (aTab.pinned)
+              return;
+
+            if (this.warnAboutClosingTabs(this.closingTabsEnum.OTHER)) {
+              let tabs = this.visibleTabs;
+              this.selectedTab = aTab;
+
+              for (let i = tabs.length - 1; i >= 0; --i) {
+                if (tabs[i] != aTab && !tabs[i].pinned)
+                  this.removeTab(tabs[i]);
+              }
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="removeCurrentTab">
+        <parameter name="aParams"/>
+        <body>
+          <![CDATA[
+            this.removeTab(this.mCurrentTab, aParams);
+          ]]>
+        </body>
+      </method>
+
+      <field name="_removingTabs">
+        []
+      </field>
+
+      <method name="removeTab">
+        <parameter name="aTab"/>
+        <parameter name="aParams"/>
+        <body>
+          <![CDATA[
+            if (aParams) {
+              var animate = aParams.animate;
+              var byMouse = aParams.byMouse;
+            }
+
+            // Handle requests for synchronously removing an already
+            // asynchronously closing tab.
+            if (!animate &&
+                aTab.closing) {
+              this._endRemoveTab(aTab);
+              return;
+            }
+
+            var isLastTab = (this.tabs.length - this._removingTabs.length == 1);
+
+            if (!this._beginRemoveTab(aTab, false, null, true))
+              return;
+
+            if (!aTab.pinned && !aTab.hidden && aTab._fullyOpen && byMouse)
+              this.tabContainer._lockTabSizing(aTab);
+            else
+              this.tabContainer._unlockTabSizing();
+
+            if (!animate /* the caller didn't opt in */ ||
+                isLastTab ||
+                aTab.pinned ||
+                aTab.hidden ||
+                this._removingTabs.length > 3 /* don't want lots of concurrent animations */ ||
+                aTab.getAttribute("fadein") != "true" /* fade-in transition hasn't been triggered yet */ ||
+                window.getComputedStyle(aTab).maxWidth == "0.1px" /* fade-in transition hasn't moved yet */ ||
+                !Services.prefs.getBoolPref("browser.tabs.animate")) {
+              this._endRemoveTab(aTab);
+              return;
+            }
+
+            this.tabContainer._handleTabTelemetryStart(aTab);
+
+            this._blurTab(aTab);
+            aTab.style.maxWidth = ""; // ensure that fade-out transition happens
+            aTab.removeAttribute("fadein");
+
+            if (this.tabs.length - this._removingTabs.length == 1) {
+              // The second tab just got closed and we will end up with a single
+              // one. Remove the first tab's close button immediately (if needed)
+              // rather than after the tabclose animation ends.
+              this.tabContainer.adjustTabstrip();
+            }
+
+            setTimeout(function (tab, tabbrowser) {
+              if (tab.parentNode &&
+                  window.getComputedStyle(tab).maxWidth == "0.1px") {
+                NS_ASSERT(false, "Giving up waiting for the tab closing animation to finish (bug 608589)");
+                tabbrowser._endRemoveTab(tab);
+              }
+            }, 3000, aTab, this);
+          ]]>
+        </body>
+      </method>
+
+      <!-- Tab close requests are ignored if the window is closing anyway,
+           e.g. when holding Ctrl+W. -->
+      <field name="_windowIsClosing">
+        false
+      </field>
+
+      <method name="_beginRemoveTab">
+        <parameter name="aTab"/>
+        <parameter name="aTabWillBeMoved"/>
+        <parameter name="aCloseWindowWithLastTab"/>
+        <parameter name="aCloseWindowFastpath"/>
+        <body>
+          <![CDATA[
+            if (aTab.closing ||
+                aTab._pendingPermitUnload ||
+                this._windowIsClosing)
+              return false;
+
+            var browser = this.getBrowserForTab(aTab);
+
+            if (!aTabWillBeMoved) {
+              let ds = browser.docShell;
+              if (ds && ds.contentViewer) {
+                // We need to block while calling permitUnload() because it
+                // processes the event queue and may lead to another removeTab()
+                // call before permitUnload() even returned.
+                aTab._pendingPermitUnload = true;
+                let permitUnload = ds.contentViewer.permitUnload();
+                delete aTab._pendingPermitUnload;
+
+                if (!permitUnload)
+                  return false;
+              }
+            }
+
+            var closeWindow = false;
+            var newTab = false;
+            if (this.tabs.length - this._removingTabs.length == 1) {
+              closeWindow = aCloseWindowWithLastTab != null ? aCloseWindowWithLastTab :
+                            !window.toolbar.visible ||
+                              this.tabContainer._closeWindowWithLastTab;
+
+              // Closing the tab and replacing it with a blank one is notably slower
+              // than closing the window right away. If the caller opts in, take
+              // the fast path.
+              if (closeWindow &&
+                  aCloseWindowFastpath &&
+                  this._removingTabs.length == 0 &&
+                  (this._windowIsClosing = window.closeWindow(true, window.warnAboutClosingWindow)))
+                return null;
+
+              newTab = true;
+            }
+
+            aTab.closing = true;
+            this._removingTabs.push(aTab);
+            this._visibleTabs = null; // invalidate cache
+            if (newTab)
+              this.addTab(BROWSER_NEW_TAB_URL, {skipAnimation: true});
+            else
+              this.tabContainer.updateVisibility();
+
+            // We're committed to closing the tab now.
+            // Dispatch a notification.
+            // We dispatch it before any teardown so that event listeners can
+            // inspect the tab that's about to close.
+            var evt = document.createEvent("UIEvent");
+            evt.initUIEvent("TabClose", true, false, window, aTabWillBeMoved ? 1 : 0);
+            aTab.dispatchEvent(evt);
+
+            if (!gMultiProcessBrowser) {
+              // Prevent this tab from showing further dialogs, since we're closing it
+              var windowUtils = browser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).
+                                getInterface(Ci.nsIDOMWindowUtils);
+              windowUtils.disableDialogs();
+            }
+
+            // Remove the tab's filter and progress listener.
+            const filter = this.mTabFilters[aTab._tPos];
+
+            browser.webProgress.removeProgressListener(filter);
+
+            filter.removeProgressListener(this.mTabListeners[aTab._tPos]);
+            this.mTabListeners[aTab._tPos].destroy();
+
+            if (browser.registeredOpenURI && !aTabWillBeMoved) {
+              this._placesAutocomplete.unregisterOpenPage(browser.registeredOpenURI);
+              delete browser.registeredOpenURI;
+            }
+
+            // We are no longer the primary content area.
+            browser.setAttribute("type", "content-targetable");
+
+            // Remove this tab as the owner of any other tabs, since it's going away.
+            Array.forEach(this.tabs, function (tab) {
+              if ("owner" in tab && tab.owner == aTab)
+                // |tab| is a child of the tab we're removing, make it an orphan
+                tab.owner = null;
+            });
+
+            aTab._endRemoveArgs = [closeWindow, newTab];
+            return true;
+          ]]>
+        </body>
+      </method>
+
+      <method name="_endRemoveTab">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            if (!aTab || !aTab._endRemoveArgs)
+              return;
+
+            var [aCloseWindow, aNewTab] = aTab._endRemoveArgs;
+            aTab._endRemoveArgs = null;
+
+            if (this._windowIsClosing) {
+              aCloseWindow = false;
+              aNewTab = false;
+            }
+
+            this._lastRelatedTab = null;
+
+            // update the UI early for responsiveness
+            aTab.collapsed = true;
+            this.tabContainer._fillTrailingGap();
+            this._blurTab(aTab);
+
+            this._removingTabs.splice(this._removingTabs.indexOf(aTab), 1);
+
+            if (aCloseWindow) {
+              this._windowIsClosing = true;
+              while (this._removingTabs.length)
+                this._endRemoveTab(this._removingTabs[0]);
+            } else if (!this._windowIsClosing) {
+              if (aNewTab)
+                focusAndSelectUrlBar();
+
+              // workaround for bug 345399
+              this.tabContainer.mTabstrip._updateScrollButtonsDisabledState();
+            }
+
+            // We're going to remove the tab and the browser now.
+            // Clean up mTabFilters and mTabListeners now rather than in
+            // _beginRemoveTab, so that their size is always in sync with the
+            // number of tabs and browsers (the xbl destructor depends on this).
+            this.mTabFilters.splice(aTab._tPos, 1);
+            this.mTabListeners.splice(aTab._tPos, 1);
+
+            var browser = this.getBrowserForTab(aTab);
+            this._outerWindowIDBrowserMap.delete(browser.outerWindowID);
+
+            // Because of the way XBL works (fields just set JS
+            // properties on the element) and the code we have in place
+            // to preserve the JS objects for any elements that have
+            // JS properties set on them, the browser element won't be
+            // destroyed until the document goes away.  So we force a
+            // cleanup ourselves.
+            // This has to happen before we remove the child so that the
+            // XBL implementation of nsIObserver still works.
+            browser.destroy();
+
+            if (browser == this.mCurrentBrowser)
+              this.mCurrentBrowser = null;
+
+            var wasPinned = aTab.pinned;
+
+            // Invalidate browsers cache, as the tab is removed from the
+            // tab container.
+            this._browsers = null;
+
+            // Remove the tab ...
+            this.tabContainer.removeChild(aTab);
+
+            // ... and fix up the _tPos properties immediately.
+            for (let i = aTab._tPos; i < this.tabs.length; i++)
+              this.tabs[i]._tPos = i;
+
+            if (!this._windowIsClosing) {
+              if (wasPinned)
+                this.tabContainer._positionPinnedTabs();
+
+              // update tab close buttons state
+              this.tabContainer.adjustTabstrip();
+
+              setTimeout(function(tabs) {
+                tabs._lastTabClosedByMouse = false;
+              }, 0, this.tabContainer);
+            }
+
+            // Pale Moon: if resizing immediately, select the tab immediately to the left
+            // instead of the right (if not leftmost) to prevent focus swap and
+            // "selected tab not under cursor"
+            // FIXME: Tabs must be sliding in from the left for this, or it'd unfocus
+            // in the other direction! Disabled for now. Is there an easier way? :hover?
+            // Is this even needed when resizing immediately?...
+            
+            //if (Services.prefs.getBoolPref("browser.tabs.resize_immediately")) {
+            //  if (this.selectedTab._tPos > 1) {
+            //    let newPos = this.selectedTab._tPos - 1;
+            //    this.selectedTab = this.tabs[newPos];
+            //  }
+            //}
+
+            // update tab positional properties and attributes
+            this.selectedTab._selected = true;
+            this.tabContainer._setPositionalAttributes();
+
+            // Removing the panel requires fixing up selectedPanel immediately
+            // (see below), which would be hindered by the potentially expensive
+            // browser removal. So we remove the browser and the panel in two
+            // steps.
+
+            var panel = this.getNotificationBox(browser);
+
+            // This will unload the document. An unload handler could remove
+            // dependant tabs, so it's important that the tabbrowser is now in
+            // a consistent state (tab removed, tab positions updated, etc.).
+            browser.parentNode.removeChild(browser);
+
+            // Release the browser in case something is erroneously holding a
+            // reference to the tab after its removal.
+            this._tabForBrowser.delete(aTab.linkedBrowser);
+            aTab.linkedBrowser = null;
+
+            // As the browser is removed, the removal of a dependent document can
+            // cause the whole window to close. So at this point, it's possible
+            // that the binding is destructed.
+            if (this.mTabBox) {
+              let selectedPanel = this.mTabBox.selectedPanel;
+
+              this.mPanelContainer.removeChild(panel);
+
+              // Under the hood, a selectedIndex attribute controls which panel
+              // is displayed. Removing a panel A which precedes the selected
+              // panel B makes selectedIndex point to the panel next to B. We
+              // need to explicitly preserve B as the selected panel.
+              this.mTabBox.selectedPanel = selectedPanel;
+            }
+
+            if (aCloseWindow)
+              this._windowIsClosing = closeWindow(true, window.warnAboutClosingWindow);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_blurTab">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            if (!aTab.selected)
+              return;
+
+            if (aTab.owner &&
+                !aTab.owner.hidden &&
+                !aTab.owner.closing &&
+                Services.prefs.getBoolPref("browser.tabs.selectOwnerOnClose")) {
+              this.selectedTab = aTab.owner;
+              return;
+            }
+
+            // Switch to a visible tab unless there aren't any others remaining
+            let remainingTabs = this.visibleTabs;
+            let numTabs = remainingTabs.length;
+            if (numTabs == 0 || numTabs == 1 && remainingTabs[0] == aTab) {
+              remainingTabs = Array.filter(this.tabs, function(tab) {
+                return !tab.closing;
+              }, this);
+            }
+
+            // Try to find a remaining tab that comes after the given tab
+            var tab = aTab;
+            do {
+              tab = tab.nextSibling;
+            } while (tab && remainingTabs.indexOf(tab) == -1);
+
+            if (!tab) {
+              tab = aTab;
+
+              do {
+                tab = tab.previousSibling;
+              } while (tab && remainingTabs.indexOf(tab) == -1);
+            }
+
+            this.selectedTab = tab;
+          ]]>
+        </body>
+      </method>
+
+      <method name="swapNewTabWithBrowser">
+        <parameter name="aNewTab"/>
+        <parameter name="aBrowser"/>
+        <body>
+          <![CDATA[
+            // The browser must be standalone.
+            if (aBrowser.getTabBrowser())
+              throw Cr.NS_ERROR_INVALID_ARG;
+
+            // The tab is definitely not loading.
+            aNewTab.removeAttribute("busy");
+            if (aNewTab.selected) {
+              this.mIsBusy = false;
+            }
+
+            this._swapBrowserDocShells(aNewTab, aBrowser);
+
+            // Update the new tab's title.
+            this.setTabTitle(aNewTab);
+
+            if (aNewTab.selected) {
+              this.updateCurrentBrowser(true);
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="swapBrowsersAndCloseOther">
+        <parameter name="aOurTab"/>
+        <parameter name="aOtherTab"/>
+        <body>
+          <![CDATA[
+            // Do not allow transfering a private tab to a non-private window
+            // and vice versa.
+            if (PrivateBrowsingUtils.isWindowPrivate(window) !=
+                PrivateBrowsingUtils.isWindowPrivate(aOtherTab.ownerDocument.defaultView))
+              return;
+
+            // That's gBrowser for the other window, not the tab's browser!
+            var remoteBrowser = aOtherTab.ownerDocument.defaultView.gBrowser;
+            var isPending = aOtherTab.hasAttribute("pending");
+
+            // Expedite the removal of the icon if it was already scheduled.
+            if (aOtherTab._soundPlayingAttrRemovalTimer) {
+              clearTimeout(aOtherTab._soundPlayingAttrRemovalTimer);
+              aOtherTab._soundPlayingAttrRemovalTimer = 0;
+              aOtherTab.removeAttribute("soundplaying");
+              remoteBrowser._tabAttrModified(aOtherTab, ["soundplaying"]);
+            }
+
+            // First, start teardown of the other browser.  Make sure to not
+            // fire the beforeunload event in the process.  Close the other
+            // window if this was its last tab.
+            if (!remoteBrowser._beginRemoveTab(aOtherTab, true, true))
+              return;
+
+            let ourBrowser = this.getBrowserForTab(aOurTab);
+            let otherBrowser = aOtherTab.linkedBrowser;
+
+            let modifiedAttrs = [];
+            if (aOtherTab.hasAttribute("muted")) {
+              aOurTab.setAttribute("muted", "true");
+              aOurTab.muteReason = aOtherTab.muteReason;
+              ourBrowser.mute();
+              modifiedAttrs.push("muted");
+            }
+            if (aOtherTab.hasAttribute("soundplaying")) {
+              aOurTab.setAttribute("soundplaying", "true");
+              modifiedAttrs.push("soundplaying");
+            }
+
+            // If the other tab is pending (i.e. has not been restored, yet)
+            // then do not switch docShells but retrieve the other tab's state
+            // and apply it to our tab.
+            if (isPending) {
+              let ss = Cc["@mozilla.org/browser/sessionstore;1"]
+                         .getService(Ci.nsISessionStore)
+              ss.setTabState(aOurTab, ss.getTabState(aOtherTab));
+
+              // Make sure to unregister any open URIs.
+              this._swapRegisteredOpenURIs(ourBrowser, otherBrowser);
+            } else {
+              // Workarounds for bug 458697
+              // Icon might have been set on DOMLinkAdded, don't override that.
+              if (!ourBrowser.mIconURL && otherBrowser.mIconURL)
+                this.setIcon(aOurTab, otherBrowser.mIconURL, otherBrowser.contentPrincipal);
+              var isBusy = aOtherTab.hasAttribute("busy");
+              if (isBusy) {
+                aOurTab.setAttribute("busy", "true");
+                modifiedAttrs.push("busy");
+                if (aOurTab.selected)
+                  this.mIsBusy = true;
+              }
+
+              this._swapBrowserDocShells(aOurTab, otherBrowser);
+            }
+
+            // Finish tearing down the tab that's going away.
+            remoteBrowser._endRemoveTab(aOtherTab);
+
+            if (isBusy)
+              this.setTabTitleLoading(aOurTab);
+            else
+              this.setTabTitle(aOurTab);
+
+            // If the tab was already selected (this happpens in the scenario
+            // of replaceTabWithWindow), notify onLocationChange, etc.
+            if (aOurTab.selected)
+              this.updateCurrentBrowser(true);
+
+            if (modifiedAttrs.length) {
+              this._tabAttrModified(aOurTab, modifiedAttrs);
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="_swapBrowserDocShells">
+        <parameter name="aOurTab"/>
+        <parameter name="aOtherBrowser"/>
+        <body>
+          <![CDATA[
+            // Unhook our progress listener
+            let index = aOurTab._tPos;
+            const filter = this.mTabFilters[index];
+            let tabListener = this.mTabListeners[index];
+            let ourBrowser = this.getBrowserForTab(aOurTab);
+            ourBrowser.webProgress.removeProgressListener(filter);
+            filter.removeProgressListener(tabListener);
+
+            // Make sure to unregister any open URIs.
+            this._swapRegisteredOpenURIs(ourBrowser, aOtherBrowser);
+
+            // Unmap old outerWindowIDs.
+            this._outerWindowIDBrowserMap.delete(ourBrowser.outerWindowID);
+            let remoteBrowser = aOtherBrowser.ownerDocument.defaultView.gBrowser;
+            if (remoteBrowser) {
+              remoteBrowser._outerWindowIDBrowserMap.delete(aOtherBrowser.outerWindowID);
+            }
+            // Swap the docshells
+            ourBrowser.swapDocShells(aOtherBrowser);
+
+            // Register new outerWindowIDs.
+            this._outerWindowIDBrowserMap.set(ourBrowser.outerWindowID, ourBrowser);
+            if (remoteBrowser) {
+              remoteBrowser._outerWindowIDBrowserMap.set(aOtherBrowser.outerWindowID, aOtherBrowser);
+            }
+            // Restore the progress listener
+            this.mTabListeners[index] = tabListener =
+              this.mTabProgressListener(aOurTab, ourBrowser, false);
+
+            const notifyAll = Ci.nsIWebProgress.NOTIFY_ALL;
+            filter.addProgressListener(tabListener, notifyAll);
+            ourBrowser.webProgress.addProgressListener(filter, notifyAll);
+          ]]>
+        </body>
+      </method>
+
+      <method name="_swapRegisteredOpenURIs">
+        <parameter name="aOurBrowser"/>
+        <parameter name="aOtherBrowser"/>
+        <body>
+          <![CDATA[
+            // If the current URI is registered as open remove it from the list.
+            if (aOurBrowser.registeredOpenURI) {
+              this._placesAutocomplete.unregisterOpenPage(aOurBrowser.registeredOpenURI);
+              delete aOurBrowser.registeredOpenURI;
+            }
+
+            // If the other/new URI is registered as open then copy it over.
+            if (aOtherBrowser.registeredOpenURI) {
+              aOurBrowser.registeredOpenURI = aOtherBrowser.registeredOpenURI;
+              delete aOtherBrowser.registeredOpenURI;
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="reloadAllTabs">
+        <body>
+          <![CDATA[
+            let tabs = this.visibleTabs;
+            let l = tabs.length;
+            for (var i = 0; i < l; i++) {
+              try {
+                this.getBrowserForTab(tabs[i]).reload();
+              } catch (e) {
+                // ignore failure to reload so others will be reloaded
+              }
+            }
+          ]]>
+        </body>
+      </method>
+
+      <method name="reloadTab">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            let browser = this.getBrowserForTab(aTab);
+            // Reset DOS mitigation for basic auth prompt
+            delete browser.authPromptCounter;
+            browser.reload();
+          ]]>
+        </body>
+      </method>
+
+      <method name="addProgressListener">
+        <parameter name="aListener"/>
+        <body>
+          <![CDATA[
+            if (arguments.length != 1) {
+              Components.utils.reportError("gBrowser.addProgressListener was " +
+                                           "called with a second argument, " +
+                                           "which is not supported. See bug " +
+                                           "608628.");
+            }
+
+            this.mProgressListeners.push(aListener);
+          ]]>
+        </body>
+      </method>
+
+      <method name="removeProgressListener">
+        <parameter name="aListener"/>
+        <body>
+          <![CDATA[
+            this.mProgressListeners =
+              this.mProgressListeners.filter(function (l) l != aListener);
+         ]]>
+        </body>
+      </method>
+
+      <method name="addTabsProgressListener">
+        <parameter name="aListener"/>
+        <body>
+          this.mTabsProgressListeners.push(aListener);
+        </body>
+      </method>
+
+      <method name="removeTabsProgressListener">
+        <parameter name="aListener"/>
+        <body>
+        <![CDATA[
+          this.mTabsProgressListeners =
+            this.mTabsProgressListeners.filter(function (l) l != aListener);
+        ]]>
+        </body>
+      </method>
+
+      <method name="getBrowserForTab">
+        <parameter name="aTab"/>
+        <body>
+        <![CDATA[
+          return aTab.linkedBrowser;
+        ]]>
+        </body>
+      </method>
+
+      <method name="showOnlyTheseTabs">
+        <parameter name="aTabs"/>
+        <body>
+        <![CDATA[
+          Array.forEach(this.tabs, function(tab) {
+            if (aTabs.indexOf(tab) == -1)
+              this.hideTab(tab);
+            else
+              this.showTab(tab);
+          }, this);
+
+          this.tabContainer._handleTabSelect(false);
+        ]]>
+        </body>
+      </method>
+
+      <method name="showTab">
+        <parameter name="aTab"/>
+        <body>
+        <![CDATA[
+          if (aTab.hidden) {
+            aTab.removeAttribute("hidden");
+            this._visibleTabs = null; // invalidate cache
+
+            this.tabContainer.adjustTabstrip();
+
+            this.tabContainer._setPositionalAttributes();
+
+            let event = document.createEvent("Events");
+            event.initEvent("TabShow", true, false);
+            aTab.dispatchEvent(event);
+          }
+        ]]>
+        </body>
+      </method>
+
+      <method name="hideTab">
+        <parameter name="aTab"/>
+        <body>
+        <![CDATA[
+          if (!aTab.hidden && !aTab.pinned && !aTab.selected &&
+              !aTab.closing) {
+            aTab.setAttribute("hidden", "true");
+            this._visibleTabs = null; // invalidate cache
+
+            this.tabContainer.adjustTabstrip();
+
+            this.tabContainer._setPositionalAttributes();
+
+            let event = document.createEvent("Events");
+            event.initEvent("TabHide", true, false);
+            aTab.dispatchEvent(event);
+          }
+        ]]>
+        </body>
+      </method>
+
+      <method name="selectTabAtIndex">
+        <parameter name="aIndex"/>
+        <parameter name="aEvent"/>
+        <body>
+        <![CDATA[
+          let tabs = this.visibleTabs;
+
+          // count backwards for aIndex < 0
+          if (aIndex < 0)
+            aIndex += tabs.length;
+
+          if (aIndex >= 0 && aIndex < tabs.length)
+            this.selectedTab = tabs[aIndex];
+
+          if (aEvent) {
+            aEvent.preventDefault();
+            aEvent.stopPropagation();
+          }
+        ]]>
+        </body>
+      </method>
+
+      <property name="selectedTab">
+        <getter>
+          return this.mCurrentTab;
+        </getter>
+        <setter>
+          <![CDATA[
+          if (gNavToolbox.collapsed) {
+            return this.mTabBox.selectedTab;
+          }         
+          // Update the tab
+          this.mTabBox.selectedTab = val;
+          return val;
+          ]]>
+        </setter>
+      </property>
+
+      <property name="selectedBrowser"
+                onget="return this.mCurrentBrowser;"
+                readonly="true"/>
+
+      <property name="browsers" readonly="true">
+       <getter>
+          <![CDATA[
+            return this._browsers ||
+                   (this._browsers = Array.map(this.tabs, function (tab) tab.linkedBrowser));
+          ]]>
+        </getter>
+      </property>
+      <field name="_browsers">null</field>
+
+      <!-- Moves a tab to a new browser window, unless it's already the only tab
+           in the current window, in which case this will do nothing. -->
+      <method name="replaceTabWithWindow">
+        <parameter name="aTab"/>
+        <parameter name="aOptions"/>
+        <body>
+          <![CDATA[
+            if (this.tabs.length == 1)
+              return null;
+
+            var options = "chrome,dialog=no,all";
+            for (var name in aOptions)
+              options += "," + name + "=" + aOptions[name];
+
+            // tell a new window to take the "dropped" tab
+            return window.openDialog(getBrowserURL(), "_blank", options, aTab);
+          ]]>
+        </body>
+      </method>
+
+      <method name="moveTabTo">
+        <parameter name="aTab"/>
+        <parameter name="aIndex"/>
+        <body>
+        <![CDATA[
+          var oldPosition = aTab._tPos;
+          if (oldPosition == aIndex)
+            return;
+
+          // Don't allow mixing pinned and unpinned tabs.
+          if (aTab.pinned)
+            aIndex = Math.min(aIndex, this._numPinnedTabs - 1);
+          else
+            aIndex = Math.max(aIndex, this._numPinnedTabs);
+          if (oldPosition == aIndex)
+            return;
+
+          this._lastRelatedTab = null;
+
+          this.mTabFilters.splice(aIndex, 0, this.mTabFilters.splice(aTab._tPos, 1)[0]);
+          this.mTabListeners.splice(aIndex, 0, this.mTabListeners.splice(aTab._tPos, 1)[0]);
+
+          let wasFocused = (document.activeElement == this.mCurrentTab);
+
+          aIndex = aIndex < aTab._tPos ? aIndex: aIndex+1;
+          this.mCurrentTab._selected = false;
+
+          // invalidate caches
+          this._browsers = null;
+          this._visibleTabs = null;
+
+          // use .item() instead of [] because dragging to the end of the strip goes out of
+          // bounds: .item() returns null (so it acts like appendChild), but [] throws
+          this.tabContainer.insertBefore(aTab, this.tabs.item(aIndex));
+
+          for (let i = 0; i < this.tabs.length; i++) {
+            this.tabs[i]._tPos = i;
+            this.tabs[i]._selected = false;
+          }
+          this.mCurrentTab._selected = true;
+
+          if (wasFocused)
+            this.mCurrentTab.focus();
+
+          this.tabContainer._handleTabSelect(false);
+
+          if (aTab.pinned)
+            this.tabContainer._positionPinnedTabs();
+
+          this.tabContainer._setPositionalAttributes();
+
+          var evt = document.createEvent("UIEvents");
+          evt.initUIEvent("TabMove", true, false, window, oldPosition);
+          aTab.dispatchEvent(evt);
+        ]]>
+        </body>
+      </method>
+
+      <method name="moveTabForward">
+        <body>
+          <![CDATA[
+            let nextTab = this.mCurrentTab.nextSibling;
+            while (nextTab && nextTab.hidden)
+              nextTab = nextTab.nextSibling;
+
+            if (nextTab)
+              this.moveTabTo(this.mCurrentTab, nextTab._tPos);
+            else if (this.arrowKeysShouldWrap)
+              this.moveTabToStart();
+          ]]>
+        </body>
+      </method>
+
+      <method name="moveTabBackward">
+        <body>
+          <![CDATA[
+            let previousTab = this.mCurrentTab.previousSibling;
+            while (previousTab && previousTab.hidden)
+              previousTab = previousTab.previousSibling;
+
+            if (previousTab)
+              this.moveTabTo(this.mCurrentTab, previousTab._tPos);
+            else if (this.arrowKeysShouldWrap)
+              this.moveTabToEnd();
+          ]]>
+        </body>
+      </method>
+
+      <method name="moveTabToStart">
+        <body>
+          <![CDATA[
+            var tabPos = this.mCurrentTab._tPos;
+            if (tabPos > 0)
+              this.moveTabTo(this.mCurrentTab, 0);
+          ]]>
+        </body>
+      </method>
+
+      <method name="moveTabToEnd">
+        <body>
+          <![CDATA[
+            var tabPos = this.mCurrentTab._tPos;
+            if (tabPos < this.browsers.length - 1)
+              this.moveTabTo(this.mCurrentTab, this.browsers.length - 1);
+          ]]>
+        </body>
+      </method>
+
+      <method name="moveTabOver">
+        <parameter name="aEvent"/>
+        <body>
+          <![CDATA[
+            var direction = window.getComputedStyle(this.parentNode, null).direction;
+            if ((direction == "ltr" && aEvent.keyCode == KeyEvent.DOM_VK_RIGHT) ||
+                (direction == "rtl" && aEvent.keyCode == KeyEvent.DOM_VK_LEFT))
+              this.moveTabForward();
+            else
+              this.moveTabBackward();
+          ]]>
+        </body>
+      </method>
+
+      <method name="duplicateTab">
+        <parameter name="aTab"/><!-- can be from a different window as well -->
+        <body>
+          <![CDATA[
+            return Cc["@mozilla.org/browser/sessionstore;1"]
+                     .getService(Ci.nsISessionStore)
+                     .duplicateTab(window, aTab);
+          ]]>
+        </body>
+      </method>
+
+      <!-- BEGIN FORWARDED BROWSER PROPERTIES.  IF YOU ADD A PROPERTY TO THE BROWSER ELEMENT
+           MAKE SURE TO ADD IT HERE AS WELL. -->
+      <property name="canGoBack"
+                onget="return this.mCurrentBrowser.canGoBack;"
+                readonly="true"/>
+
+      <property name="canGoForward"
+                onget="return this.mCurrentBrowser.canGoForward;"
+                readonly="true"/>
+
+      <method name="goBack">
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.goBack();
+          ]]>
+        </body>
+      </method>
+
+      <method name="goForward">
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.goForward();
+          ]]>
+        </body>
+      </method>
+
+      <method name="reload">
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.reload();
+          ]]>
+        </body>
+      </method>
+
+      <method name="reloadWithFlags">
+        <parameter name="aFlags"/>
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.reloadWithFlags(aFlags);
+          ]]>
+        </body>
+      </method>
+
+      <method name="stop">
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.stop();
+          ]]>
+        </body>
+      </method>
+
+      <!-- throws exception for unknown schemes -->
+      <method name="loadURI">
+        <parameter name="aURI"/>
+        <parameter name="aReferrerURI"/>
+        <parameter name="aCharset"/>
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.loadURI(aURI, aReferrerURI, aCharset);
+          ]]>
+        </body>
+      </method>
+
+      <!-- throws exception for unknown schemes -->
+      <method name="loadURIWithFlags">
+        <parameter name="aURI"/>
+        <parameter name="aFlags"/>
+        <parameter name="aReferrerURI"/>
+        <parameter name="aCharset"/>
+        <parameter name="aPostData"/>
+        <body>
+          <![CDATA[
+            // Note - the callee understands both:
+            // (a) loadURIWithFlags(aURI, aFlags, ...)
+            // (b) loadURIWithFlags(aURI, { flags: aFlags, ... })
+            // Forwarding it as (a) here actually supports both (a) and (b),
+            // so you can call us either way too.
+            return this.mCurrentBrowser.loadURIWithFlags(aURI, aFlags, aReferrerURI, aCharset, aPostData);
+          ]]>
+        </body>
+      </method>
+
+      <method name="goHome">
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.goHome();
+          ]]>
+        </body>
+      </method>
+
+      <property name="homePage">
+        <getter>
+          <![CDATA[
+            return this.mCurrentBrowser.homePage;
+          ]]>
+        </getter>
+        <setter>
+          <![CDATA[
+            this.mCurrentBrowser.homePage = val;
+            return val;
+          ]]>
+        </setter>
+      </property>
+
+      <method name="gotoIndex">
+        <parameter name="aIndex"/>
+        <body>
+          <![CDATA[
+            return this.mCurrentBrowser.gotoIndex(aIndex);
+          ]]>
+        </body>
+      </method>
+
+      <method name="attachFormFill">
+        <body><![CDATA[
+          for (var i = 0; i < this.mPanelContainer.childNodes.length; ++i) {
+            var cb = this.getBrowserAtIndex(i);
+            cb.attachFormFill();
+          }
+        ]]></body>
+      </method>
+
+      <method name="detachFormFill">
+        <body><![CDATA[
+          for (var i = 0; i < this.mPanelContainer.childNodes.length; ++i) {
+            var cb = this.getBrowserAtIndex(i);
+            cb.detachFormFill();
+          }
+        ]]></body>
+      </method>
+
+      <property name="currentURI"
+                onget="return this.mCurrentBrowser.currentURI;"
+                readonly="true"/>
+
+      <field name="_fastFind">null</field>
+      <property name="fastFind"
+                readonly="true">
+        <getter>
+        <![CDATA[
+          if (!this._fastFind) {
+            this._fastFind = Components.classes["@mozilla.org/typeaheadfind;1"]
+                                       .createInstance(Components.interfaces.nsITypeAheadFind);
+            this._fastFind.init(this.docShell);
+          }
+          return this._fastFind;
+        ]]>
+        </getter>
+      </property>
+
+      <field name="_lastSearchString">null</field>
+      <field name="_lastSearchHighlight">false</field>
+
+      <field name="finder"><![CDATA[
+        ({
+          mTabBrowser: this,
+          mListeners: new Set(),
+          get finder() {
+            return this.mTabBrowser.mCurrentBrowser.finder;
+          },
+          destroy: function() {
+            this.finder.destroy();
+          },
+          addResultListener: function(aListener) {
+            this.mListeners.add(aListener);
+            this.finder.addResultListener(aListener);
+          },
+          removeResultListener: function(aListener) {
+            this.mListeners.delete(aListener);
+            this.finder.removeResultListener(aListener);
+          },
+          get searchString() {
+            return this.finder.searchString;
+          },
+          get clipboardSearchString() {
+            return this.finder.clipboardSearchString;
+          },
+          set clipboardSearchString(val) {
+            return this.finder.clipboardSearchString = val;
+          },
+          set caseSensitive(val) {
+            return this.finder.caseSensitive = val;
+          },
+          set entireWord(val) {
+            return this.finder.entireWord = val;
+          },
+          get highlighter() {
+            return this.finder.highlighter;
+          },
+          get matchesCountLimit() {
+            return this.finder.matchesCountLimit;
+          },
+          fastFind: function(...args) {
+            this.finder.fastFind(...args);
+          },
+          findAgain: function(...args) {
+            this.finder.findAgain(...args);
+          },
+          setSearchStringToSelection: function() {
+            return this.finder.setSearchStringToSelection();
+          },
+          highlight: function(...args) {
+            this.finder.highlight(...args);
+          },
+          getInitialSelection: function() {
+            this.finder.getInitialSelection();
+          },
+          getActiveSelectionText: function() {
+            return this.finder.getActiveSelectionText();
+          },
+          enableSelection: function() {
+            this.finder.enableSelection();
+          },
+          removeSelection: function() {
+            this.finder.removeSelection();
+          },
+          focusContent: function() {
+            this.finder.focusContent();
+          },
+          onFindbarClose: function() {
+            this.finder.onFindbarClose();
+          },
+          onFindbarOpen: function() {
+            this.finder.onFindbarOpen();
+          },
+          onModalHighlightChange: function(...args) {
+            return this.finder.onModalHighlightChange(...args);
+          },
+          onHighlightAllChange: function(...args) {
+            return this.finder.onHighlightAllChange(...args);
+          },
+          keyPress: function(aEvent) {
+            this.finder.keyPress(aEvent);
+          },
+          requestMatchesCount: function(...args) {
+            this.finder.requestMatchesCount(...args);
+          },
+          onIteratorRangeFound: function(...args) {
+            this.finder.onIteratorRangeFound(...args);
+          },
+          onIteratorReset: function() {
+            this.finder.onIteratorReset();
+          },
+          onIteratorRestart: function(...args) {
+            this.finder.onIteratorRestart(...args);
+          },
+          onIteratorStart: function(...args) {
+            this.finder.onIteratorStart(...args);
+          },
+          onLocationChange: function(...args) {
+            this.finder.onLocationChange(...args);
+          }
+        })
+      ]]></field>
+
+      <property name="docShell"
+                onget="return this.mCurrentBrowser.docShell"
+                readonly="true"/>
+
+      <property name="webNavigation"
+                onget="return this.mCurrentBrowser.webNavigation"
+                readonly="true"/>
+
+      <property name="webBrowserFind"
+                readonly="true"
+                onget="return this.mCurrentBrowser.webBrowserFind"/>
+
+      <property name="webProgress"
+                readonly="true"
+                onget="return this.mCurrentBrowser.webProgress"/>
+
+      <property name="contentWindow"
+                readonly="true"
+                onget="return this.mCurrentBrowser.contentWindow"/>
+
+      <property name="contentWindowAsCPOW"
+                readonly="true"
+                onget="return this.mCurrentBrowser.contentWindow;"/>
+
+      <property name="sessionHistory"
+                onget="return this.mCurrentBrowser.sessionHistory;"
+                readonly="true"/>
+
+      <property name="markupDocumentViewer"
+                onget="return this.mCurrentBrowser.markupDocumentViewer;"
+                readonly="true"/>
+
+      <property name="contentViewerEdit"
+                onget="return this.mCurrentBrowser.contentViewerEdit;"
+                readonly="true"/>
+
+      <property name="contentViewerFile"
+                onget="return this.mCurrentBrowser.contentViewerFile;"
+                readonly="true"/>
+
+      <property name="contentDocument"
+                onget="return this.mCurrentBrowser.contentDocument;"
+                readonly="true"/>
+
+      <property name="contentDocumentAsCPOW"
+                onget="return this.mCurrentBrowser.contentDocument;"
+                readonly="true"/>
+
+      <property name="contentTitle"
+                onget="return this.mCurrentBrowser.contentTitle;"
+                readonly="true"/>
+
+      <property name="contentPrincipal"
+                onget="return this.mCurrentBrowser.contentPrincipal;"
+                readonly="true"/>
+
+      <property name="securityUI"
+                onget="return this.mCurrentBrowser.securityUI;"
+                readonly="true"/>
+
+      <property name="fullZoom"
+                onget="return this.mCurrentBrowser.fullZoom;"
+                onset="this.mCurrentBrowser.fullZoom = val;"/>
+
+      <property name="textZoom"
+                onget="return this.mCurrentBrowser.textZoom;"
+                onset="this.mCurrentBrowser.textZoom = val;"/>
+
+      <property name="isSyntheticDocument"
+                onget="return this.mCurrentBrowser.isSyntheticDocument;"
+                readonly="true"/>
+
+      <method name="_handleKeyEvent">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          if (!aEvent.isTrusted) {
+            // Don't let untrusted events mess with tabs.
+            return;
+          }
+
+          if (aEvent.altKey)
+            return;
+
+          if (aEvent.ctrlKey && aEvent.shiftKey && !aEvent.metaKey) {
+            switch (aEvent.keyCode) {
+              case aEvent.DOM_VK_PAGE_UP:
+                this.moveTabBackward();
+                aEvent.stopPropagation();
+                aEvent.preventDefault();
+                return;
+              case aEvent.DOM_VK_PAGE_DOWN:
+                this.moveTabForward();
+                aEvent.stopPropagation();
+                aEvent.preventDefault();
+                return;
+            }
+          }
+
+#ifdef XP_MACOSX
+          if (!aEvent.metaKey)
+            return;
+
+          var offset = 1;
+          switch (aEvent.charCode) {
+            case '}'.charCodeAt(0):
+              offset = -1;
+            case '{'.charCodeAt(0):
+              if (window.getComputedStyle(this, null).direction == "ltr")
+                offset *= -1;
+              this.tabContainer.advanceSelectedTab(offset, true);
+              aEvent.stopPropagation();
+              aEvent.preventDefault();
+          }
+#else
+          if (aEvent.ctrlKey && !aEvent.shiftKey && !aEvent.metaKey &&
+              aEvent.keyCode == KeyEvent.DOM_VK_F4 &&
+              !this.mCurrentTab.pinned) {
+            this.removeCurrentTab({animate: true});
+            aEvent.stopPropagation();
+            aEvent.preventDefault();
+          }
+#endif
+        ]]></body>
+      </method>
+
+      <property name="userTypedValue"
+                onget="return this.mCurrentBrowser.userTypedValue;"
+                onset="return this.mCurrentBrowser.userTypedValue = val;"/>
+
+      <method name="createTooltip">
+        <parameter name="event"/>
+        <body><![CDATA[
+          event.stopPropagation();
+          var tab = document.tooltipNode;
+          if (tab.localName != "tab") {
+            event.preventDefault();
+            return;
+          }
+
+          var stringID, label;
+          if (tab.mOverCloseButton) {
+            stringID = "tabs.closeTab";
+          } else if (tab._overPlayingIcon) {
+            if (tab.linkedBrowser.audioBlocked) {
+              stringID = "tabs.unblockAudio.tooltip";
+            } else {
+              stringID = tab.linkedBrowser.audioMuted ?
+                "tabs.unmuteAudio.tooltip" :
+                "tabs.muteAudio.tooltip";
+            }
+          } else {
+            label = tab.getAttribute("label");
+          }
+          if (stringID && !label) {
+            label = this.mStringBundle.getString(stringID);
+          }
+          event.target.setAttribute("label", label);
+        ]]></body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          switch (aEvent.type) {
+            case "keypress":
+              this._handleKeyEvent(aEvent);
+              break;
+            case "sizemodechange":
+              if (aEvent.target == window) {
+                this.mCurrentBrowser.docShellIsActive =
+                  (window.windowState != window.STATE_MINIMIZED);
+              }
+              break;
+          }
+        ]]></body>
+      </method>
+
+      <method name="receiveMessage">
+        <parameter name="aMessage"/>
+        <body><![CDATA[
+          let json = aMessage.json;
+          let browser = aMessage.target;
+
+          switch (aMessage.name) {
+            case "DOMTitleChanged": {
+              let tab = this.getTabForBrowser(browser);
+              if (!tab)
+                return;
+              let titleChanged = this.setTabTitle(tab);
+              if (titleChanged && !tab.selected && !tab.hasAttribute("busy"))
+                tab.setAttribute("titlechanged", "true");
+              break;
+            }
+            case "DOMWebNotificationClicked": {
+              let tab = this.getTabForBrowser(browser);
+              if (!tab)
+                return;
+              this.selectedTab = tab;
+              window.focus();
+              break;
+            }
+          }
+        ]]></body>
+      </method>
+
+      <constructor>
+        <![CDATA[
+          let browserStack = document.getAnonymousElementByAttribute(this, "anonid", "browserStack");
+          this.mCurrentBrowser = document.getAnonymousElementByAttribute(this, "anonid", "initialBrowser");
+          if (Services.prefs.getBoolPref("browser.tabs.remote")) {
+            browserStack.removeChild(this.mCurrentBrowser);
+            this.mCurrentBrowser.setAttribute("remote", true);
+            browserStack.appendChild(this.mCurrentBrowser);
+          }
+
+          this.mCurrentTab = this.tabContainer.firstChild;
+          document.addEventListener("keypress", this, false);
+          window.addEventListener("sizemodechange", this, false);
+
+          var uniqueId = "panel" + Date.now();
+          this.mPanelContainer.childNodes[0].id = uniqueId;
+          this.mCurrentTab.linkedPanel = uniqueId;
+          this.mCurrentTab._tPos = 0;
+          this.mCurrentTab._fullyOpen = true;
+          this.mCurrentTab.linkedBrowser = this.mCurrentBrowser;
+          this._tabForBrowser.set(this.mCurrentBrowser, this.mCurrentTab);
+
+          // set up the shared autoscroll popup
+          this._autoScrollPopup = this.mCurrentBrowser._createAutoScrollPopup();
+          this._autoScrollPopup.id = "autoscroller";
+          this.appendChild(this._autoScrollPopup);
+          this.mCurrentBrowser.setAttribute("autoscrollpopup", this._autoScrollPopup.id);
+          this.mCurrentBrowser.droppedLinkHandler = handleDroppedLink;
+          this.updateWindowResizers();
+
+          // Hook up the event listeners to the first browser
+          var tabListener = this.mTabProgressListener(this.mCurrentTab, this.mCurrentBrowser, true);
+          const nsIWebProgress = Components.interfaces.nsIWebProgress;
+          const filter = Components.classes["@mozilla.org/appshell/component/browser-status-filter;1"]
+                                   .createInstance(nsIWebProgress);
+          filter.addProgressListener(tabListener, nsIWebProgress.NOTIFY_ALL);
+          this.mTabListeners[0] = tabListener;
+          this.mTabFilters[0] = filter;
+
+          try {
+            // We assume this can only fail because mCurrentBrowser's docShell
+            // hasn't been created, yet. This may be caused by code accessing
+            // gBrowser before the window has finished loading.
+            this._addProgressListenerForInitialTab();
+          } catch (e) {
+            // The binding was constructed too early, wait until the initial
+            // tab's document is ready, then add the progress listener.
+            this._waitForInitialContentDocument();
+          }
+
+          this.style.backgroundColor =
+            Services.prefs.getBoolPref("browser.display.use_system_colors") ?
+              "-moz-default-background-color" :
+              Services.prefs.getCharPref("browser.display.background_color");
+
+          if (Services.prefs.getBoolPref("browser.tabs.remote")) {
+            messageManager.addMessageListener("DOMTitleChanged", this);
+          } else {
+            this._outerWindowIDBrowserMap.set(this.mCurrentBrowser.outerWindowID,
+                                              this.mCurrentBrowser);
+          }
+          messageManager.addMessageListener("DOMWebNotificationClicked", this);
+        ]]>
+      </constructor>
+
+      <method name="_addProgressListenerForInitialTab">
+        <body><![CDATA[
+          this.webProgress.addProgressListener(this.mTabFilters[0], Ci.nsIWebProgress.NOTIFY_ALL);
+        ]]></body>
+      </method>
+
+      <method name="_waitForInitialContentDocument">
+        <body><![CDATA[
+          let obs = (subject, topic) => {
+            if (this.browsers[0].contentWindow == subject) {
+              Services.obs.removeObserver(obs, topic);
+              this._addProgressListenerForInitialTab();
+            }
+          };
+
+          // We use content-document-global-created as an approximation for
+          // "docShell is initialized". We can do this because in the
+          // mTabProgressListener we care most about the STATE_STOP notification
+          // that will reset mBlank. That means it's important to at least add
+          // the progress listener before the initial about:blank load stops
+          // if we can't do it before the load starts.
+          Services.obs.addObserver(obs, "content-document-global-created", false);
+        ]]></body>
+      </method>
+
+      <destructor>
+        <![CDATA[
+          for (var i = 0; i < this.mTabListeners.length; ++i) {
+            let browser = this.getBrowserAtIndex(i);
+            if (browser.registeredOpenURI) {
+              this._placesAutocomplete.unregisterOpenPage(browser.registeredOpenURI);
+              delete browser.registeredOpenURI;
+            }
+            browser.webProgress.removeProgressListener(this.mTabFilters[i]);
+            this.mTabFilters[i].removeProgressListener(this.mTabListeners[i]);
+            this.mTabFilters[i] = null;
+            this.mTabListeners[i].destroy();
+            this.mTabListeners[i] = null;
+          }
+          document.removeEventListener("keypress", this, false);
+          window.removeEventListener("sizemodechange", this, false);
+
+          if (Services.prefs.getBoolPref("browser.tabs.remote"))
+            messageManager.removeMessageListener("DOMTitleChanged", this);
+        ]]>
+      </destructor>
+
+      <!-- Deprecated stuff, implemented for backwards compatibility. -->
+      <method name="enterTabbedMode">
+        <body>
+          Application.console.log("enterTabbedMode is an obsolete method and " +
+                                  "will be removed in a future release.");
+        </body>
+      </method>
+      <field name="mTabbedMode" readonly="true">true</field>
+      <method name="setStripVisibilityTo">
+        <parameter name="aShow"/>
+        <body>
+          this.tabContainer.visible = aShow;
+        </body>
+      </method>
+      <method name="getStripVisibility">
+        <body>
+          return this.tabContainer.visible;
+        </body>
+      </method>
+      <property name="mContextTab" readonly="true"
+                onget="return TabContextMenu.contextTab;"/>
+      <property name="mPrefs" readonly="true"
+                onget="return Services.prefs;"/>
+      <property name="mTabContainer" readonly="true"
+                onget="return this.tabContainer;"/>
+      <property name="mTabs" readonly="true"
+                onget="return this.tabs;"/>
+      <!--
+        - Compatibility hack: several extensions depend on this property to
+        - access the tab context menu or tab container, so keep that working for
+        - now. Ideally we can remove this once extensions are using
+        - tabbrowser.tabContextMenu and tabbrowser.tabContainer directly.
+        -->
+      <property name="mStrip" readonly="true">
+        <getter>
+        <![CDATA[
+          return ({
+            self: this,
+            childNodes: [null, this.tabContextMenu, this.tabContainer],
+            firstChild: { nextSibling: this.tabContextMenu },
+            getElementsByAttribute: function (attr, attrValue) {
+              if (attr == "anonid" && attrValue == "tabContextMenu")
+                return [this.self.tabContextMenu];
+              return [];
+            },
+            // Also support adding event listeners (forward to the tab container)
+            addEventListener: function (a,b,c) { this.self.tabContainer.addEventListener(a,b,c); },
+            removeEventListener: function (a,b,c) { this.self.tabContainer.removeEventListener(a,b,c); }
+          });
+        ]]>
+        </getter>
+      </property>
+      <field name="_soundPlayingAttrRemovalTimer">0</field>
+    </implementation>
+
+    <handlers>
+      <handler event="DOMWindowClose" phase="capturing">
+        <![CDATA[
+          if (!event.isTrusted)
+            return;
+
+          if (this.tabs.length == 1)
+            return;
+
+          var tab = this._getTabForContentWindow(event.target);
+          if (tab) {
+            this.removeTab(tab);
+            event.preventDefault();
+          }
+        ]]>
+      </handler>
+      <handler event="DOMWillOpenModalDialog" phase="capturing">
+        <![CDATA[
+          if (!event.isTrusted)
+            return;
+
+          // We're about to open a modal dialog, make sure the opening
+          // tab is brought to the front.
+          this.selectedTab = this._getTabForContentWindow(event.target.top);
+        ]]>
+      </handler>
+      <handler event="DOMTitleChanged">
+        <![CDATA[
+          if (!event.isTrusted)
+            return;
+
+          var contentWin = event.target.defaultView;
+          if (contentWin != contentWin.top)
+            return;
+
+          var tab = this._getTabForContentWindow(contentWin);
+          if (!tab) {
+            return;
+          }
+
+          var titleChanged = this.setTabTitle(tab);
+          if (titleChanged && !tab.selected && !tab.hasAttribute("busy"))
+            tab.setAttribute("titlechanged", "true");
+        ]]>
+      </handler>
+      <handler event="DOMAudioPlaybackStarted">
+        <![CDATA[
+          var tab = getTabFromAudioEvent(event)
+          if (!tab) {
+            return;
+          }
+
+          clearTimeout(tab._soundPlayingAttrRemovalTimer);
+          tab._soundPlayingAttrRemovalTimer = 0;
+
+          let modifiedAttrs = [];
+          if (tab.hasAttribute("soundplaying-scheduledremoval")) {
+            tab.removeAttribute("soundplaying-scheduledremoval");
+            modifiedAttrs.push("soundplaying-scheduledremoval");
+          }
+
+          if (!tab.hasAttribute("soundplaying")) {
+            tab.setAttribute("soundplaying", true);
+            modifiedAttrs.push("soundplaying");
+          }
+
+          this._tabAttrModified(tab, modifiedAttrs);
+        ]]>
+      </handler>
+      <handler event="DOMAudioPlaybackStopped">
+        <![CDATA[
+          var tab = getTabFromAudioEvent(event)
+          if (!tab) {
+            return;
+          }
+
+          if (tab.hasAttribute("soundplaying")) {
+            let removalDelay = Services.prefs.getIntPref("browser.tabs.delayHidingAudioPlayingIconMS");
+
+            tab.style.setProperty("--soundplaying-removal-delay", `${removalDelay - 300}ms`);
+            tab.setAttribute("soundplaying-scheduledremoval", "true");
+            this._tabAttrModified(tab, ["soundplaying-scheduledremoval"]);
+
+            tab._soundPlayingAttrRemovalTimer = setTimeout(() => {
+              tab.removeAttribute("soundplaying-scheduledremoval");
+              tab.removeAttribute("soundplaying");
+              this._tabAttrModified(tab, ["soundplaying", "soundplaying-scheduledremoval"]);
+            }, removalDelay);
+          }
+        ]]>
+      </handler>
+      <handler event="DOMAudioPlaybackBlockStarted">
+        <![CDATA[
+          var tab = getTabFromAudioEvent(event)
+          if (!tab) {
+            return;
+          }
+
+          if (!tab.hasAttribute("blocked")) {
+            tab.setAttribute("blocked", true);
+            this._tabAttrModified(tab, ["blocked"]);
+          }
+        ]]>
+      </handler>
+      <handler event="DOMAudioPlaybackBlockStopped">
+        <![CDATA[
+          var tab = getTabFromAudioEvent(event)
+          if (!tab) {
+            return;
+          }
+
+          if (tab.hasAttribute("blocked")) {
+            tab.removeAttribute("blocked");
+            this._tabAttrModified(tab, ["blocked"]);
+          }
+        ]]>
+      </handler>
+    </handlers>
+  </binding>
+
+  <binding id="tabbrowser-tabbox"
+           extends="chrome://global/content/bindings/tabbox.xml#tabbox">
+    <implementation>
+      <property name="tabs" readonly="true"
+                onget="return document.getBindingParent(this).tabContainer;"/>
+    </implementation>
+  </binding>
+
+  <binding id="tabbrowser-arrowscrollbox" extends="chrome://global/content/bindings/scrollbox.xml#arrowscrollbox-clicktoscroll">
+    <implementation>
+      <!-- Override scrollbox.xml method, since our scrollbox's children are
+           inherited from the binding parent -->
+      <method name="_getScrollableElements">
+        <body><![CDATA[
+          return Array.filter(document.getBindingParent(this).childNodes,
+                              this._canScrollToElement, this);
+        ]]></body>
+      </method>
+      <method name="_canScrollToElement">
+        <parameter name="tab"/>
+        <body><![CDATA[
+          return !tab.pinned && !tab.hidden;
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="underflow" phase="capturing"><![CDATA[
+        if (event.detail == 0)
+          return; // Ignore vertical events
+
+        var tabs = document.getBindingParent(this);
+        tabs.removeAttribute("overflow");
+
+        if (tabs._lastTabClosedByMouse)
+          tabs._expandSpacerBy(this._scrollButtonDown.clientWidth);
+
+        tabs.tabbrowser._removingTabs.forEach(tabs.tabbrowser.removeTab,
+                                              tabs.tabbrowser);
+
+        tabs._positionPinnedTabs();
+      ]]></handler>
+      <handler event="overflow"><![CDATA[
+        if (event.detail == 0)
+          return; // Ignore vertical events
+
+        var tabs = document.getBindingParent(this);
+        tabs.setAttribute("overflow", "true");
+        tabs._positionPinnedTabs();
+        tabs._handleTabSelect(false);
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <binding id="tabbrowser-tabs"
+           extends="chrome://global/content/bindings/tabbox.xml#tabs">
+    <resources>
+      <stylesheet src="chrome://browser/content/tabbrowser.css"/>
+    </resources>
+
+    <content>
+      <xul:hbox align="end">
+        <xul:image class="tab-drop-indicator" anonid="tab-drop-indicator" collapsed="true"/>
+      </xul:hbox>
+      <xul:arrowscrollbox anonid="arrowscrollbox" orient="horizontal" flex="1"
+                          style="min-width: 1px;"
+#ifndef XP_MACOSX
+                          clicktoscroll="true"
+#endif
+                          class="tabbrowser-arrowscrollbox">
+# This is a hack to circumvent bug 472020, otherwise the tabs show up on the
+# right of the newtab button.
+        <children includes="tab"/>
+# This is to ensure anything extensions put here will go before the newtab
+# button, necessary due to the previous hack.
+        <children/>
+        <xul:toolbarbutton class="tabs-newtab-button"
+                           command="cmd_newNavigatorTab"
+                           onclick="checkForMiddleClick(this, event);"
+                           onmouseover="document.getBindingParent(this)._enterNewTab();"
+                           onmouseout="document.getBindingParent(this)._leaveNewTab();"
+                           tooltiptext="&newTabButton.tooltip;"/>
+        <xul:spacer class="closing-tabs-spacer" anonid="closing-tabs-spacer"
+                    style="width: 0;"/>
+      </xul:arrowscrollbox>
+    </content>
+
+    <implementation implements="nsIDOMEventListener">
+      <constructor>
+        <![CDATA[
+          this.mTabClipWidth = Services.prefs.getIntPref("browser.tabs.tabClipWidth");
+          this.mCloseButtons = Services.prefs.getIntPref("browser.tabs.closeButtons");
+          this._closeWindowWithLastTab = Services.prefs.getBoolPref("browser.tabs.closeWindowWithLastTab");
+
+          var tab = this.firstChild;
+          tab.setAttribute("label",
+                           this.tabbrowser.mStringBundle.getString("tabs.emptyTabTitle"));
+          tab.setAttribute("crop", "end");
+          tab.setAttribute("onerror", "this.removeAttribute('image');");
+          this.adjustTabstrip();
+
+          Services.prefs.addObserver("browser.tabs.", this._prefObserver, false);
+          window.addEventListener("resize", this, false);
+          window.addEventListener("load", this, false);
+
+          this._tabAnimationLoggingEnabled = Services.prefs.getBoolPref("browser.tabs.animationLogging.enabled", false);
+          this._browserNewtabpageEnabled = Services.prefs.getBoolPref("browser.newtabpage.enabled");
+        ]]>
+      </constructor>
+
+      <destructor>
+        <![CDATA[
+          Services.prefs.removeObserver("browser.tabs.", this._prefObserver);
+        ]]>
+      </destructor>
+
+      <field name="tabbrowser" readonly="true">
+        document.getElementById(this.getAttribute("tabbrowser"));
+      </field>
+
+      <field name="tabbox" readonly="true">
+        this.tabbrowser.mTabBox;
+      </field>
+
+      <field name="contextMenu" readonly="true">
+        document.getElementById("tabContextMenu");
+      </field>
+
+      <field name="mTabstripWidth">0</field>
+
+      <field name="mTabstrip">
+        document.getAnonymousElementByAttribute(this, "anonid", "arrowscrollbox");
+      </field>
+
+      <field name="_firstTab">null</field>
+      <field name="_lastTab">null</field>
+      <field name="_afterSelectedTab">null</field>
+      <field name="_beforeHoveredTab">null</field>
+      <field name="_afterHoveredTab">null</field>
+
+      <method name="_setPositionalAttributes">
+        <body><![CDATA[
+          let visibleTabs = this.tabbrowser.visibleTabs;
+
+          if (!visibleTabs.length)
+            return;
+
+          let selectedIndex = visibleTabs.indexOf(this.selectedItem);
+
+          let lastVisible = visibleTabs.length - 1;
+
+          if (this._afterSelectedTab)
+            this._afterSelectedTab.removeAttribute("afterselected-visible");
+          if (this.selectedItem.closing || selectedIndex == lastVisible) {
+            this._afterSelectedTab = null;
+          } else {
+            this._afterSelectedTab = visibleTabs[selectedIndex + 1];
+            this._afterSelectedTab.setAttribute("afterselected-visible",
+                                                "true");
+          }
+
+          if (this._firstTab)
+            this._firstTab.removeAttribute("first-visible-tab");
+          this._firstTab = visibleTabs[0];
+          this._firstTab.setAttribute("first-visible-tab", "true");
+          if (this._lastTab)
+            this._lastTab.removeAttribute("last-visible-tab");
+          this._lastTab = visibleTabs[lastVisible];
+          this._lastTab.setAttribute("last-visible-tab", "true");
+        ]]></body>
+      </method>
+
+      <field name="_prefObserver"><![CDATA[({
+        tabContainer: this,
+
+        observe: function (subject, topic, data) {
+          switch (data) {
+            case "browser.tabs.closeButtons":
+              this.tabContainer.mCloseButtons = Services.prefs.getIntPref(data);
+              this.tabContainer.adjustTabstrip();
+              break;
+            case "browser.tabs.autoHide":
+              this.tabContainer.updateVisibility();
+              break;
+            case "browser.tabs.closeWindowWithLastTab":
+              this.tabContainer._closeWindowWithLastTab = Services.prefs.getBoolPref(data);
+              this.tabContainer.adjustTabstrip();
+              break;
+          }
+        }
+      });]]></field>
+      <field name="_blockDblClick">false</field>
+
+      <field name="_tabDropIndicator">
+        document.getAnonymousElementByAttribute(this, "anonid", "tab-drop-indicator");
+      </field>
+
+      <field name="_dragOverDelay">350</field>
+      <field name="_dragTime">0</field>
+
+      <field name="_container" readonly="true"><![CDATA[
+        this.parentNode && this.parentNode.localName == "toolbar" ? this.parentNode : this;
+      ]]></field>
+
+      <field name="_propagatedVisibilityOnce">false</field>
+
+      <property name="visible"
+                onget="return !this._container.collapsed;">
+        <setter><![CDATA[
+          if (val == this.visible &&
+              this._propagatedVisibilityOnce)
+            return val;
+
+          this._container.collapsed = !val;
+
+          this._propagateVisibility();
+          this._propagatedVisibilityOnce = true;
+
+          return val;
+        ]]></setter>
+      </property>
+
+      <method name="_enterNewTab">
+        <body><![CDATA[
+          let visibleTabs = this.tabbrowser.visibleTabs;
+          let candidate = visibleTabs[visibleTabs.length - 1];
+          if (!candidate.selected) {
+            this._beforeHoveredTab = candidate;
+            candidate.setAttribute("beforehovered", "true");
+          }
+        ]]></body>
+      </method>
+
+      <method name="_leaveNewTab">
+        <body><![CDATA[
+          if (this._beforeHoveredTab) {
+            this._beforeHoveredTab.removeAttribute("beforehovered");
+            this._beforeHoveredTab = null;
+          }
+        ]]></body>
+      </method>
+
+      <method name="_propagateVisibility">
+        <body><![CDATA[
+          let visible = this.visible;
+
+          document.getElementById("menu_closeWindow").hidden = !visible;
+          document.getElementById("menu_close").setAttribute("label",
+            this.tabbrowser.mStringBundle.getString(visible ? "tabs.closeTab" : "tabs.close"));
+
+          goSetCommandEnabled("cmd_ToggleTabsOnTop", visible);
+
+          TabsOnTop.syncUI();
+
+          TabsInTitlebar.allowedBy("tabs-visible", visible);
+        ]]></body>
+      </method>
+
+      <method name="updateVisibility">
+        <body><![CDATA[
+          if (this.childNodes.length - this.tabbrowser._removingTabs.length == 1)
+            this.visible = window.toolbar.visible &&
+            !Services.prefs.getBoolPref("browser.tabs.autoHide");
+          else
+            this.visible = true;
+        ]]></body>
+      </method>
+
+      <method name="adjustTabstrip">
+        <body><![CDATA[
+          let numTabs = this.childNodes.length -
+                        this.tabbrowser._removingTabs.length;
+          // modes for tabstrip
+          // 0 - button on active tab only
+          // 1 - close buttons on all tabs, if available space allows
+          // 2 - no close buttons at all
+          // 3 - close button at the end of the tabstrip
+          switch (this.mCloseButtons) {
+          case 0:
+            // If we decide we want to hide the close tab button on the last tab
+            // when closing the window with the last tab, then we should check
+            // if (numTabs == 1 && this._closeWindowWithLastTab) here and set
+            // this.setAttribute("closebuttons", "hidden") appropriately
+            this.setAttribute("closebuttons", "activetab");
+            break;
+          case 1:
+            if (numTabs == 1) {
+              // See remark about potentially hiding the close tab button, above.
+              this.setAttribute("closebuttons", "alltabs");
+            } else if (numTabs == 2) {
+              // This is an optimization to avoid layout flushes by calling
+              // getBoundingClientRect() when we just opened a second tab. In
+              // this case it's highly unlikely that the tab width is smaller
+              // than mTabClipWidth and the tab close button obscures too much
+              // of the tab's label. In the edge case of the window being too
+              // narrow (or if tabClipWidth has been set to a way higher value),
+              // we'll correct the 'closebuttons' attribute after the tabopen
+              // animation has finished.
+              this.setAttribute("closebuttons", "alltabs");
+            } else {
+              let tab = this.tabbrowser.visibleTabs[this.tabbrowser._numPinnedTabs];
+              if (tab && tab.getBoundingClientRect().width > this.mTabClipWidth)
+                this.setAttribute("closebuttons", "alltabs");
+              else
+                this.setAttribute("closebuttons", "activetab");
+            }
+            break;
+          case 2:
+          case 3:
+            this.setAttribute("closebuttons", "never");
+            break;
+          }
+          var tabstripClosebutton = document.getElementById("tabs-closebutton");
+          if (tabstripClosebutton && tabstripClosebutton.parentNode == this._container)
+            tabstripClosebutton.collapsed = this.mCloseButtons != 3;
+        ]]></body>
+      </method>
+
+      <method name="_handleTabSelect">
+        <parameter name="aSmoothScroll"/>
+        <body><![CDATA[
+          if (this.getAttribute("overflow") == "true")
+            this.mTabstrip.ensureElementIsVisible(this.selectedItem, aSmoothScroll);
+        ]]></body>
+      </method>
+
+      <method name="_fillTrailingGap">
+        <body><![CDATA[
+          try {
+            // if we're at the right side (and not the logical end,
+            // which is why this works for both LTR and RTL)
+            // of the tabstrip, we need to ensure that we stay
+            // completely scrolled to the right side
+            var tabStrip = this.mTabstrip;
+            if (tabStrip.scrollPosition + tabStrip.scrollClientSize >
+                tabStrip.scrollSize)
+              tabStrip.scrollByPixels(-1);
+          } catch (e) {}
+        ]]></body>
+      </method>
+
+      <field name="_closingTabsSpacer">
+        document.getAnonymousElementByAttribute(this, "anonid", "closing-tabs-spacer");
+      </field>
+
+      <field name="_tabDefaultMaxWidth">NaN</field>
+      <field name="_lastTabClosedByMouse">false</field>
+      <field name="_hasTabTempMaxWidth">false</field>
+
+      <!-- Try to keep the active tab's close button under the mouse cursor -->
+      <method name="_lockTabSizing">
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          var tabs = this.tabbrowser.visibleTabs;
+          if (!tabs.length)
+            return;
+
+          var isEndTab = (aTab._tPos > tabs[tabs.length-1]._tPos);
+          var tabWidth = aTab.getBoundingClientRect().width;
+
+          if (!this._tabDefaultMaxWidth)
+            this._tabDefaultMaxWidth =
+              parseFloat(window.getComputedStyle(aTab).maxWidth);
+          this._lastTabClosedByMouse = true;
+
+          if (this.getAttribute("overflow") == "true") {
+#ifdef XP_WIN
+            // Don't need to do anything if we're in overflow mode and we're closing
+            // the last tab.
+            if (isEndTab)
+#else
+            // Don't need to do anything if we're in overflow mode and aren't scrolled
+            // all the way to the right, or if we're closing the last tab.
+            if (isEndTab || !this.mTabstrip._scrollButtonDown.disabled)
+#endif
+              return;
+
+            // If the tab has an owner that will become the active tab, the owner will
+            // be to the left of it, so we actually want the left tab to slide over.
+            // This can't be done as easily in non-overflow mode, so we don't bother.
+            if (aTab.owner)
+              return;
+
+            // Resize immediately if preffed
+            // XXX: we may want to make this a three-state pref to disable this early
+            // exit if people prefer a mix of behavior (don't resize in overflow,
+            // but resize if not overflowing)
+            if (Services.prefs.getBoolPref("browser.tabs.resize_immediately"))
+              return;
+
+            this._expandSpacerBy(tabWidth);
+          } else { // non-overflow mode
+            // Locking is neither in effect nor needed, so let tabs expand normally.
+            if (isEndTab && !this._hasTabTempMaxWidth)
+              return;
+              
+            // Resize immediately if preffed
+            // XXX: we may want to make this a three-state pref to disable this early
+            // exit if people prefer a mix of behavior (don't resize in overflow,
+            // but resize if not overflowing)
+            if (Services.prefs.getBoolPref("browser.tabs.resize_immediately"))
+              return;
+
+            let numPinned = this.tabbrowser._numPinnedTabs;
+            // Force tabs to stay the same width, unless we're closing the last tab,
+            // which case we need to let them expand just enough so that the overall
+            // tabbar width is the same.
+            if (isEndTab) {
+              let numNormalTabs = tabs.length - numPinned;
+              tabWidth = tabWidth * (numNormalTabs + 1) / numNormalTabs;
+              if (tabWidth > this._tabDefaultMaxWidth)
+                tabWidth = this._tabDefaultMaxWidth;
+            }
+            tabWidth += "px";
+            for (let i = numPinned; i < tabs.length; i++) {
+              let tab = tabs[i];
+              tab.style.setProperty("max-width", tabWidth, "important");
+              if (!isEndTab) { // keep tabs the same width
+                tab.style.transition = "none";
+                tab.clientTop; // flush styles to skip animation; see bug 649247
+                tab.style.transition = "";
+              }
+            }
+            this._hasTabTempMaxWidth = true;
+            this.tabbrowser.addEventListener("mousemove", this, false);
+            window.addEventListener("mouseout", this, false);
+          }
+        ]]></body>
+      </method>
+
+      <method name="_expandSpacerBy">
+        <parameter name="pixels"/>
+        <body><![CDATA[
+          let spacer = this._closingTabsSpacer;
+          spacer.style.width = parseFloat(spacer.style.width) + pixels + "px";
+          this.setAttribute("using-closing-tabs-spacer", "true");
+          this.tabbrowser.addEventListener("mousemove", this, false);
+          window.addEventListener("mouseout", this, false);
+        ]]></body>
+      </method>
+
+      <method name="_unlockTabSizing">
+        <body><![CDATA[
+          this.tabbrowser.removeEventListener("mousemove", this, false);
+          window.removeEventListener("mouseout", this, false);
+
+          if (this._hasTabTempMaxWidth) {
+            this._hasTabTempMaxWidth = false;
+            let tabs = this.tabbrowser.visibleTabs;
+            for (let i = 0; i < tabs.length; i++)
+              tabs[i].style.maxWidth = "";
+          }
+
+          if (this.hasAttribute("using-closing-tabs-spacer")) {
+            this.removeAttribute("using-closing-tabs-spacer");
+            this._closingTabsSpacer.style.width = 0;
+          }
+        ]]></body>
+      </method>
+
+      <field name="_lastNumPinned">0</field>
+      <method name="_positionPinnedTabs">
+        <body><![CDATA[
+          var numPinned = this.tabbrowser._numPinnedTabs;
+          var doPosition = this.getAttribute("overflow") == "true" &&
+                           numPinned > 0;
+
+          if (doPosition) {
+            this.setAttribute("positionpinnedtabs", "true");
+
+            let scrollButtonWidth = this.mTabstrip._scrollButtonDown.getBoundingClientRect().width;
+            let paddingStart = this.mTabstrip.scrollboxPaddingStart;
+            let width = 0;
+
+            for (let i = numPinned - 1; i >= 0; i--) {
+              let tab = this.childNodes[i];
+              width += tab.getBoundingClientRect().width;
+              tab.style.MozMarginStart = - (width + scrollButtonWidth + paddingStart) + "px";
+            }
+
+            this.style.MozPaddingStart = width + paddingStart + "px";
+
+          } else {
+            this.removeAttribute("positionpinnedtabs");
+
+            for (let i = 0; i < numPinned; i++) {
+              let tab = this.childNodes[i];
+              tab.style.MozMarginStart = "";
+            }
+
+            this.style.MozPaddingStart = "";
+          }
+
+          if (this._lastNumPinned != numPinned) {
+            this._lastNumPinned = numPinned;
+            this._handleTabSelect(false);
+          }
+        ]]></body>
+      </method>
+
+      <method name="_animateTabMove">
+        <parameter name="event"/>
+        <body><![CDATA[
+          let draggedTab = event.dataTransfer.mozGetDataAt(TAB_DROP_TYPE, 0);
+
+          if (this.getAttribute("movingtab") != "true") {
+            this.setAttribute("movingtab", "true");
+            this.selectedItem = draggedTab;
+          }
+
+          if (!("animLastScreenX" in draggedTab._dragData))
+            draggedTab._dragData.animLastScreenX = draggedTab._dragData.screenX;
+
+          let screenX = event.screenX;
+          if (screenX == draggedTab._dragData.animLastScreenX)
+            return;
+
+          let draggingRight = screenX > draggedTab._dragData.animLastScreenX;
+          draggedTab._dragData.animLastScreenX = screenX;
+
+          let rtl = (window.getComputedStyle(this).direction == "rtl");
+          let pinned = draggedTab.pinned;
+          let numPinned = this.tabbrowser._numPinnedTabs;
+          let tabs = this.tabbrowser.visibleTabs
+                                    .slice(pinned ? 0 : numPinned,
+                                           pinned ? numPinned : undefined);
+          if (rtl)
+            tabs.reverse();
+          let tabWidth = draggedTab.getBoundingClientRect().width;
+
+          // Move the dragged tab based on the mouse position.
+
+          let leftTab = tabs[0];
+          let rightTab = tabs[tabs.length - 1];
+          let tabScreenX = draggedTab.boxObject.screenX;
+          let translateX = screenX - draggedTab._dragData.screenX;
+          if (!pinned)
+            translateX += this.mTabstrip.scrollPosition - draggedTab._dragData.scrollX;
+          let leftBound = leftTab.boxObject.screenX - tabScreenX;
+          let rightBound = (rightTab.boxObject.screenX + rightTab.boxObject.width) -
+                           (tabScreenX + tabWidth);
+          translateX = Math.max(translateX, leftBound);
+          translateX = Math.min(translateX, rightBound);
+          draggedTab.style.transform = "translateX(" + translateX + "px)";
+
+          // Determine what tab we're dragging over.
+          // * Point of reference is the center of the dragged tab. If that
+          //   point touches a background tab, the dragged tab would take that
+          //   tab's position when dropped.
+          // * We're doing a binary search in order to reduce the amount of
+          //   tabs we need to check.
+
+          let tabCenter = tabScreenX + translateX + tabWidth / 2;
+          let newIndex = -1;
+          let oldIndex = "animDropIndex" in draggedTab._dragData ?
+                         draggedTab._dragData.animDropIndex : draggedTab._tPos;
+          let low = 0;
+          let high = tabs.length - 1;
+          while (low <= high) {
+            let mid = Math.floor((low + high) / 2);
+            if (tabs[mid] == draggedTab &&
+                ++mid > high)
+              break;
+            let boxObject = tabs[mid].boxObject;
+            let screenX = boxObject.screenX + getTabShift(tabs[mid], oldIndex);
+            if (screenX > tabCenter) {
+              high = mid - 1;
+            } else if (screenX + boxObject.width < tabCenter) {
+              low = mid + 1;
+            } else {
+              newIndex = tabs[mid]._tPos;
+              break;
+            }
+          }
+          if (newIndex >= oldIndex)
+            newIndex++;
+          if (newIndex < 0 || newIndex == oldIndex)
+            return;
+          draggedTab._dragData.animDropIndex = newIndex;
+
+          // Shift background tabs to leave a gap where the dragged tab
+          // would currently be dropped.
+
+          for (let tab of tabs) {
+            if (tab != draggedTab) {
+              let shift = getTabShift(tab, newIndex);
+              tab.style.transform = shift ? "translateX(" + shift + "px)" : "";
+            }
+          }
+
+          function getTabShift(tab, dropIndex) {
+            if (tab._tPos < draggedTab._tPos && tab._tPos >= dropIndex)
+              return rtl ? -tabWidth : tabWidth;
+            if (tab._tPos > draggedTab._tPos && tab._tPos < dropIndex)
+              return rtl ? tabWidth : -tabWidth;
+            return 0;
+          }
+        ]]></body>
+      </method>
+
+      <method name="_finishAnimateTabMove">
+        <body><![CDATA[
+          if (this.getAttribute("movingtab") != "true")
+            return;
+
+          for (let tab of this.tabbrowser.visibleTabs)
+            tab.style.transform = "";
+
+          this.removeAttribute("movingtab");
+
+          this._handleTabSelect();
+        ]]></body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          switch (aEvent.type) {
+            case "load":
+              this.updateVisibility();
+              break;
+            case "resize":
+              if (aEvent.target != window)
+                break;
+
+              let sizemode = document.documentElement.getAttribute("sizemode");
+              TabsInTitlebar.allowedBy("sizemode",
+                                       sizemode == "maximized" || sizemode == "fullscreen");
+
+              var width = this.mTabstrip.boxObject.width;
+              if (width != this.mTabstripWidth) {
+                this.adjustTabstrip();
+                this._fillTrailingGap();
+                this._handleTabSelect();
+                this.mTabstripWidth = width;
+              }
+
+              this.tabbrowser.updateWindowResizers();
+              break;
+            case "mouseout":
+              // If the "related target" (the node to which the pointer went) is not
+              // a child of the current document, the mouse just left the window.
+              let relatedTarget = aEvent.relatedTarget;
+              if (relatedTarget && relatedTarget.ownerDocument == document)
+                break;
+            case "mousemove":
+              if (document.getElementById("tabContextMenu").state != "open")
+                this._unlockTabSizing();
+              break;
+          }
+        ]]></body>
+      </method>
+
+      <field name="_animateElement">
+        this.mTabstrip._scrollButtonDown;
+      </field>
+
+      <method name="_notifyBackgroundTab">
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          if (aTab.pinned)
+            return;
+
+          var scrollRect = this.mTabstrip.scrollClientRect;
+          var tab = aTab.getBoundingClientRect();
+
+          // Is the new tab already completely visible?
+          if (scrollRect.left <= tab.left && tab.right <= scrollRect.right)
+            return;
+
+          if (this.mTabstrip.smoothScroll) {
+            let selected = !this.selectedItem.pinned &&
+                           this.selectedItem.getBoundingClientRect();
+
+            // Can we make both the new tab and the selected tab completely visible?
+            if (!selected ||
+                Math.max(tab.right - selected.left, selected.right - tab.left) <=
+                  scrollRect.width) {
+              this.mTabstrip.ensureElementIsVisible(aTab);
+              return;
+            }
+
+            this.mTabstrip._smoothScrollByPixels(this.mTabstrip._isRTLScrollbox ?
+                                                 selected.right - scrollRect.right :
+                                                 selected.left - scrollRect.left);
+          }
+
+          if (!this._animateElement.hasAttribute("notifybgtab")) {
+            this._animateElement.setAttribute("notifybgtab", "true");
+            setTimeout(function (ele) {
+              ele.removeAttribute("notifybgtab");
+            }, 150, this._animateElement);
+          }
+        ]]></body>
+      </method>
+
+      <method name="_getDragTargetTab">
+        <parameter name="event"/>
+        <body><![CDATA[
+          let tab = event.target.localName == "tab" ? event.target : null;
+          if (tab &&
+              (event.type == "drop" || event.type == "dragover") &&
+              event.dataTransfer.dropEffect == "link") {
+            let boxObject = tab.boxObject;
+            if (event.screenX < boxObject.screenX + boxObject.width * .25 ||
+                event.screenX > boxObject.screenX + boxObject.width * .75)
+              return null;
+          }
+          return tab;
+        ]]></body>
+      </method>
+
+      <method name="_getDropIndex">
+        <parameter name="event"/>
+        <body><![CDATA[
+          var tabs = this.childNodes;
+          var tab = this._getDragTargetTab(event);
+          if (window.getComputedStyle(this, null).direction == "ltr") {
+            for (let i = tab ? tab._tPos : 0; i < tabs.length; i++)
+              if (event.screenX < tabs[i].boxObject.screenX + tabs[i].boxObject.width / 2)
+                return i;
+          } else {
+            for (let i = tab ? tab._tPos : 0; i < tabs.length; i++)
+              if (event.screenX > tabs[i].boxObject.screenX + tabs[i].boxObject.width / 2)
+                return i;
+          }
+          return tabs.length;
+        ]]></body>
+      </method>
+
+      <method name="_setEffectAllowedForDataTransfer">
+        <parameter name="event"/>
+        <body><![CDATA[
+          var dt = event.dataTransfer;
+          // Disallow dropping multiple items
+          if (dt.mozItemCount > 1)
+            return dt.effectAllowed = "none";
+
+          var types = dt.mozTypesAt(0);
+          var sourceNode = null;
+          // tabs are always added as the first type
+          if (types[0] == TAB_DROP_TYPE) {
+            var sourceNode = dt.mozGetDataAt(TAB_DROP_TYPE, 0);
+            if (sourceNode instanceof XULElement &&
+                sourceNode.localName == "tab" &&
+                sourceNode.ownerDocument.defaultView instanceof ChromeWindow &&
+                sourceNode.ownerDocument.documentElement.getAttribute("windowtype") == "navigator:browser" &&
+                sourceNode.ownerDocument.defaultView.gBrowser.tabContainer == sourceNode.parentNode) {
+              // Do not allow transfering a private tab to a non-private window
+              // and vice versa.
+              if (PrivateBrowsingUtils.isWindowPrivate(window) !=
+                  PrivateBrowsingUtils.isWindowPrivate(sourceNode.ownerDocument.defaultView))
+                return dt.effectAllowed = "none";
+
+#ifdef XP_MACOSX
+              return dt.effectAllowed = event.altKey ? "copy" : "move";
+#else
+              return dt.effectAllowed = event.ctrlKey ? "copy" : "move";
+#endif
+            }
+          }
+
+          if (browserDragAndDrop.canDropLink(event)) {
+            // Here we need to do this manually
+            return dt.effectAllowed = dt.dropEffect = "link";
+          }
+          return dt.effectAllowed = "none";
+        ]]></body>
+      </method>
+
+      <method name="_handleNewTab">
+        <parameter name="tab"/>
+        <body><![CDATA[
+          if (tab.parentNode != this)
+            return;
+          tab._fullyOpen = true;
+
+          this.adjustTabstrip();
+
+          if (tab.getAttribute("selected") == "true") {
+            this._fillTrailingGap();
+            this._handleTabSelect();
+          } else {
+            if (tab.hasAttribute("skipbackgroundnotify")) {
+              tab.removeAttribute("skipbackgroundnotify");
+            } else {
+              this._notifyBackgroundTab(tab);
+            }
+          }
+
+          // XXXmano: this is a temporary workaround for bug 345399
+          // We need to manually update the scroll buttons disabled state
+          // if a tab was inserted to the overflow area or removed from it
+          // without any scrolling and when the tabbar has already
+          // overflowed.
+          this.mTabstrip._updateScrollButtonsDisabledState();
+        ]]></body>
+      </method>
+
+      <method name="_canAdvanceToTab">
+        <parameter name="aTab"/>
+        <body>
+        <![CDATA[
+          return !aTab.closing;
+        ]]>
+        </body>
+      </method>
+
+      <method name="_handleTabTelemetryStart">
+        <parameter name="aTab"/>
+        <parameter name="aURI"/>
+        <body>
+        <![CDATA[
+          // Animation-smoothness telemetry/logging
+          if (this._tabAnimationLoggingEnabled) {
+            if (aURI == "about:newtab" && (aTab._tPos == 1 || aTab._tPos == 2)) {
+              // Indicate newtab page animation where other tabs are unaffected
+              // (for which case, the 2nd or 3rd tabs are good representatives, even if not absolute)
+              aTab._recordingTabOpenPlain = true;
+            }
+            aTab._recordingHandle = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                                          .getInterface(Ci.nsIDOMWindowUtils)
+                                          .startFrameTimeRecording();
+          }
+
+          // Overall animation duration
+          aTab._animStartTime = Date.now();
+        ]]>
+        </body>
+      </method>
+
+      <method name="_handleTabTelemetryEnd">
+        <parameter name="aTab"/>
+        <body>
+        <![CDATA[
+          if (!aTab._animStartTime) {
+            return;
+          }
+
+          aTab._animStartTime = 0;
+
+          // Handle tab animation smoothness telemetry/logging of frame intervals and paint times
+          if (!("_recordingHandle" in aTab)) {
+            return;
+          }
+
+          let paints = {};
+          let intervals = window.QueryInterface(Ci.nsIInterfaceRequestor)
+                                .getInterface(Ci.nsIDOMWindowUtils)
+                                .stopFrameTimeRecording(aTab._recordingHandle, paints);
+          delete aTab._recordingHandle;
+          paints = paints.value; // The result array itself.
+          let frameCount = intervals.length;
+
+          if (this._tabAnimationLoggingEnabled) {
+            let msg = "Tab " + (aTab.closing ? "close" : "open") + " (Frame-interval / paint-processing):\n";
+            for (let i = 0; i < frameCount; i++) {
+              msg += Math.round(intervals[i]) + " / " + Math.round(paints[i]) + "\n";
+            }
+            Services.console.logStringMessage(msg);
+          }
+
+          // For telemetry, the first frame interval is not useful since it may represent an interval
+          // to a relatively old frame (prior to recording start). So we'll ignore it for the average.
+          // But if we recorded only 1 frame (very rare), then the first paint duration is a good
+          // representative of the first frame interval for our cause (indicates very bad animation).
+          // First paint duration is always useful for us.
+          if (frameCount > 0) {
+            let averageInterval = 0;
+            let averagePaint = paints[0];
+            for (let i = 1; i < frameCount; i++) {
+              averageInterval += intervals[i];
+              averagePaint    += paints[i];
+            };
+            averagePaint /= frameCount;
+            averageInterval = (frameCount == 1)
+                              ? averagePaint
+                              : averageInterval / (frameCount - 1);
+
+            if (aTab._recordingTabOpenPlain) {
+              delete aTab._recordingTabOpenPlain;
+            }
+          }
+        ]]>
+        </body>
+      </method>
+
+      <!-- Deprecated stuff, implemented for backwards compatibility. -->
+      <property name="mTabstripClosebutton" readonly="true"
+                onget="return document.getElementById('tabs-closebutton');"/>
+      <property name="mAllTabsPopup" readonly="true"
+                onget="return document.getElementById('alltabs-popup');"/>
+    </implementation>
+
+    <handlers>
+      <handler event="TabSelect" action="this._handleTabSelect();"/>
+
+      <handler event="transitionend"><![CDATA[
+        if (event.propertyName != "max-width")
+          return;
+
+        var tab = event.target;
+
+        this._handleTabTelemetryEnd(tab);
+
+        if (tab.getAttribute("fadein") == "true") {
+          if (tab._fullyOpen)
+            this.adjustTabstrip();
+          else
+            this._handleNewTab(tab);
+        } else if (tab.closing) {
+          this.tabbrowser._endRemoveTab(tab);
+        }
+      ]]></handler>
+
+      <handler event="dblclick"><![CDATA[
+#ifndef XP_MACOSX
+        // When the tabbar has an unified appearance with the titlebar
+        // and menubar, a double-click in it should have the same behavior
+        // as double-clicking the titlebar
+        if (TabsInTitlebar.enabled ||
+            (TabsOnTop.enabled && this.parentNode._dragBindingAlive))
+          return;
+#endif
+
+        if (event.button != 0 ||
+            event.originalTarget.localName != "box")
+          return;
+
+        // See comments in the "mousedown" and "click" event handlers of the
+        // tabbrowser-tabs binding.
+        if (!this._blockDblClick)
+          BrowserOpenTab();
+
+        event.preventDefault();
+      ]]></handler>
+
+      <!-- Consider that the in-tab close button is only shown on the active
+           tab. When clicking on an inactive tab at the position where the
+           close button will appear during the click, no "click" event will be
+           dispatched, because the mousedown and mouseup events don't have the
+           same event target. For that reason use "mousedown" instead of "click"
+           to implement in-tab close button behavior. (Pale Moon UXP issue #775)
+      -->
+      <handler event="mousedown" button="0" phase="capturing"><![CDATA[
+        /* The only sequence in which a second click event (i.e. dblclik)
+         * can be dispatched on an in-tab close button is when it is shown
+         * after the first click (i.e. the first click event was dispatched
+         * on the tab). This happens when we show the close button only on
+         * the active tab. (bug 352021)
+         * The only sequence in which a third click event can be dispatched
+         * on an in-tab close button is when the tab was opened with a
+         * double click on the tabbar. (bug 378344)
+         * In both cases, it is most likely that the close button area has
+         * been accidentally clicked, therefore we do not close the tab.
+         *
+         * We don't want to ignore processing of more than one click event,
+         * though, since the user might actually be repeatedly clicking to
+         * close many tabs at once.
+         *
+         * Also prevent errant doubleclick on the close button from opening
+         * a new tab (bug 343628):
+         * Since we're removing the event target, if the user double-clicks
+         * the button, the dblclick event will be dispatched with the tabbar
+         * as its event target (and explicit/originalTarget), which treats
+         * that as a mouse gesture for opening a new tab.
+         * In this context, we're manually blocking the dblclick event.
+         */
+
+        // Reset flags at the beginning of a series of clicks:
+        if (event.detail == 1) {
+          this.flagClickOnCloseButton = false;
+          this.flagActivateTabOrClickOnTabbar = false;
+        }
+
+        this.blockCloseButtonOnDblclick = this.flagActivateTabOrClickOnTabbar;
+        this._blockDblClick = this.flagClickOnCloseButton;
+
+        // Set flags:
+        let eventTargetIsCloseButton =
+            event.originalTarget.classList.contains("tab-close-button");
+        this.flagClickOnCloseButton = eventTargetIsCloseButton;
+        this.flagActivateTabOrClickOnTabbar =
+            ((!eventTargetIsCloseButton && event.detail == 1) ||
+             event.originalTarget.localName == "box");
+      ]]></handler>
+
+      <handler event="click" button="0"><![CDATA[
+        // See comment in the "mousedown" event handler of the
+        // tabbrowser-tabs binding.
+        if (event.originalTarget.classList.contains("tab-close-button") &&
+            !this.blockCloseButtonOnDblclick) {
+          gBrowser.removeTab(document.getBindingParent(event.originalTarget),
+                             {animate: true, byMouse: true,});
+          this._blockDblClick = true;
+        }
+      ]]></handler>
+
+      <handler event="click" button="1"><![CDATA[
+        if (event.target.localName == "tab") {
+          if (this.childNodes.length > 1 || !this._closeWindowWithLastTab)
+            this.tabbrowser.removeTab(event.target, {animate: true, byMouse: true});
+        } else if (event.originalTarget.localName == "box") {
+          BrowserOpenTab();
+        } else {
+          return;
+        }
+
+        event.stopPropagation();
+      ]]></handler>
+
+      <handler event="keypress"><![CDATA[
+        if (event.altKey || event.shiftKey ||
+#ifdef XP_MACOSX
+            !event.metaKey)
+#else
+            !event.ctrlKey || event.metaKey)
+#endif
+          return;
+
+        switch (event.keyCode) {
+          case KeyEvent.DOM_VK_UP:
+            this.tabbrowser.moveTabBackward();
+            break;
+          case KeyEvent.DOM_VK_DOWN:
+            this.tabbrowser.moveTabForward();
+            break;
+          case KeyEvent.DOM_VK_RIGHT:
+          case KeyEvent.DOM_VK_LEFT:
+            this.tabbrowser.moveTabOver(event);
+            break;
+          case KeyEvent.DOM_VK_HOME:
+            this.tabbrowser.moveTabToStart();
+            break;
+          case KeyEvent.DOM_VK_END:
+            this.tabbrowser.moveTabToEnd();
+            break;
+          default:
+            // Stop the keypress event for the above keyboard
+            // shortcuts only.
+            return;
+        }
+        event.stopPropagation();
+        event.preventDefault();
+      ]]></handler>
+
+      <handler event="dragstart"><![CDATA[
+        var tab = this._getDragTargetTab(event);
+        if (!tab)
+          return;
+
+        let dt = event.dataTransfer;
+        dt.mozSetDataAt(TAB_DROP_TYPE, tab, 0);
+        let browser = tab.linkedBrowser;
+
+        // We must not set text/x-moz-url or text/plain data here,
+        // otherwise trying to deatch the tab by dropping it on the desktop
+        // may result in an "internet shortcut"
+        dt.mozSetDataAt("text/x-moz-text-internal", browser.currentURI.spec, 0);
+
+        // Set the cursor to an arrow during tab drags.
+        dt.mozCursor = "default";
+
+        // Create a canvas to which we capture the current tab.
+        // Until canvas is HiDPI-aware (bug 780362), we need to scale the desired
+        // canvas size (in CSS pixels) to the window's backing resolution in order
+        // to get a full-resolution drag image for use on HiDPI displays.
+        let windowUtils = window.getInterface(Ci.nsIDOMWindowUtils);
+        let scale = windowUtils.screenPixelsPerCSSPixel / windowUtils.fullZoom;
+        let canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
+        canvas.mozOpaque = true;
+        canvas.width = 160 * scale;
+        canvas.height = 90 * scale;
+        PageThumbs.captureToCanvas(browser, canvas);
+        dt.setDragImage(canvas, -16 * scale, -16 * scale);
+
+        // _dragData.offsetX/Y give the coordinates that the mouse should be
+        // positioned relative to the corner of the new window created upon
+        // dragend such that the mouse appears to have the same position
+        // relative to the corner of the dragged tab.
+        function clientX(ele) ele.getBoundingClientRect().left;
+        let tabOffsetX = clientX(tab) - clientX(this);
+        tab._dragData = {
+          offsetX: event.screenX - window.screenX - tabOffsetX,
+          offsetY: event.screenY - window.screenY,
+          scrollX: this.mTabstrip.scrollPosition,
+          screenX: event.screenX
+        };
+
+        event.stopPropagation();
+      ]]></handler>
+
+      <handler event="dragover"><![CDATA[
+        var effects = this._setEffectAllowedForDataTransfer(event);
+
+        var ind = this._tabDropIndicator;
+        if (effects == "" || effects == "none") {
+          ind.collapsed = true;
+          return;
+        }
+        event.preventDefault();
+        event.stopPropagation();
+
+        var tabStrip = this.mTabstrip;
+        var ltr = (window.getComputedStyle(this, null).direction == "ltr");
+
+        // autoscroll the tab strip if we drag over the scroll
+        // buttons, even if we aren't dragging a tab, but then
+        // return to avoid drawing the drop indicator
+        var pixelsToScroll = 0;
+        if (this.getAttribute("overflow") == "true") {
+          var targetAnonid = event.originalTarget.getAttribute("anonid");
+          switch (targetAnonid) {
+            case "scrollbutton-up":
+              pixelsToScroll = tabStrip.scrollIncrement * -1;
+              break;
+            case "scrollbutton-down":
+              pixelsToScroll = tabStrip.scrollIncrement;
+              break;
+          }
+          if (pixelsToScroll)
+            tabStrip.scrollByPixels((ltr ? 1 : -1) * pixelsToScroll);
+        }
+
+        if (effects == "move" &&
+            this == event.dataTransfer.mozGetDataAt(TAB_DROP_TYPE, 0).parentNode) {
+          ind.collapsed = true;
+          this._animateTabMove(event);
+          return;
+        }
+
+        this._finishAnimateTabMove();
+
+        if (effects == "link") {
+          let tab = this._getDragTargetTab(event);
+          if (tab) {
+            if (!this._dragTime)
+              this._dragTime = Date.now();
+            if (Date.now() >= this._dragTime + this._dragOverDelay)
+              this.selectedItem = tab;
+            ind.collapsed = true;
+            return;
+          }
+        }
+
+        var rect = tabStrip.getBoundingClientRect();
+        var newMargin;
+        if (pixelsToScroll) {
+          // if we are scrolling, put the drop indicator at the edge
+          // so that it doesn't jump while scrolling
+          let scrollRect = tabStrip.scrollClientRect;
+          let minMargin = scrollRect.left - rect.left;
+          let maxMargin = Math.min(minMargin + scrollRect.width,
+                                   scrollRect.right);
+          if (!ltr)
+            [minMargin, maxMargin] = [this.clientWidth - maxMargin,
+                                      this.clientWidth - minMargin];
+          newMargin = (pixelsToScroll > 0) ? maxMargin : minMargin;
+        }
+        else {
+          let newIndex = this._getDropIndex(event);
+          if (newIndex == this.childNodes.length) {
+            let tabRect = this.childNodes[newIndex-1].getBoundingClientRect();
+            if (ltr)
+              newMargin = tabRect.right - rect.left;
+            else
+              newMargin = rect.right - tabRect.left;
+          }
+          else {
+            let tabRect = this.childNodes[newIndex].getBoundingClientRect();
+            if (ltr)
+              newMargin = tabRect.left - rect.left;
+            else
+              newMargin = rect.right - tabRect.right;
+          }
+        }
+
+        ind.collapsed = false;
+
+        newMargin += ind.clientWidth / 2;
+        if (!ltr)
+          newMargin *= -1;
+
+        ind.style.transform = "translate(" + Math.round(newMargin) + "px)";
+        ind.style.MozMarginStart = (-ind.clientWidth) + "px";
+      ]]></handler>
+
+      <handler event="drop"><![CDATA[
+        var dt = event.dataTransfer;
+        var dropEffect = dt.dropEffect;
+        var draggedTab;
+        if (dropEffect != "link") { // copy or move
+          draggedTab = dt.mozGetDataAt(TAB_DROP_TYPE, 0);
+          // not our drop then
+          if (!draggedTab)
+            return;
+        }
+
+        this._tabDropIndicator.collapsed = true;
+        event.stopPropagation();
+        if (draggedTab && dropEffect == "copy") {
+          // copy the dropped tab (wherever it's from)
+          let newIndex = this._getDropIndex(event);
+          let newTab = this.tabbrowser.duplicateTab(draggedTab);
+          this.tabbrowser.moveTabTo(newTab, newIndex);
+          if (draggedTab.parentNode != this || event.shiftKey)
+            this.selectedItem = newTab;
+        } else if (draggedTab && draggedTab.parentNode == this) {
+          this._finishAnimateTabMove();
+
+          // actually move the dragged tab
+          if ("animDropIndex" in draggedTab._dragData) {
+            let newIndex = draggedTab._dragData.animDropIndex;
+            if (newIndex > draggedTab._tPos)
+              newIndex--;
+            this.tabbrowser.moveTabTo(draggedTab, newIndex);
+          }
+        } else if (draggedTab) {
+          // swap the dropped tab with a new one we create and then close
+          // it in the other window (making it seem to have moved between
+          // windows)
+          let newIndex = this._getDropIndex(event);
+          let newTab = this.tabbrowser.addTab("about:blank");
+          let newBrowser = this.tabbrowser.getBrowserForTab(newTab);
+          // Stop the about:blank load
+          newBrowser.stop();
+          // make sure it has a docshell
+          newBrowser.docShell;
+
+          let numPinned = this.tabbrowser._numPinnedTabs;
+          if (newIndex < numPinned || draggedTab.pinned && newIndex == numPinned)
+            this.tabbrowser.pinTab(newTab);
+          this.tabbrowser.moveTabTo(newTab, newIndex);
+
+          // We need to select the tab before calling swapBrowsersAndCloseOther
+          // so that window.content in chrome windows points to the right tab
+          // when pagehide/show events are fired.
+          this.tabbrowser.selectedTab = newTab;
+
+          draggedTab.parentNode._finishAnimateTabMove();
+          this.tabbrowser.swapBrowsersAndCloseOther(newTab, draggedTab);
+
+          // Call updateCurrentBrowser to make sure the URL bar is up to date
+          // for our new tab after we've done swapBrowsersAndCloseOther.
+          this.tabbrowser.updateCurrentBrowser(true);
+        } else {
+          // Pass true to disallow dropping javascript: or data: urls
+          let links;
+          try {
+            links = browserDragAndDrop.dropLinks(event, true);
+          } catch (ex) {}
+
+//          // valid urls don't contain spaces ' '; if we have a space it isn't a valid url.
+//          if (!url || url.includes(" ")) //PMed
+          if (!links || links.length === 0) //FF
+            return;
+
+          let inBackground = Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+
+          if (event.shiftKey)
+            inBackground = !inBackground;
+
+          let targetTab = this._getDragTargetTab(event);
+          let replace = !(!targetTab || dropEffect == "copy");
+          let newIndex = this._getDropIndex(event);
+          let urls = links.map(link => link.url);
+          this.tabbrowser.loadTabs(urls, {
+            inBackground,
+            replace,
+            allowThirdPartyFixup: true,
+            targetTab,
+            newIndex,
+          });
+        }
+
+        if (draggedTab) {
+          delete draggedTab._dragData;
+        }
+      ]]></handler>
+
+      <handler event="dragend"><![CDATA[
+        // Note: while this case is correctly handled here, this event
+        // isn't dispatched when the tab is moved within the tabstrip,
+        // see bug 460801.
+
+        this._finishAnimateTabMove();
+
+        var dt = event.dataTransfer;
+        var draggedTab = dt.mozGetDataAt(TAB_DROP_TYPE, 0);
+        if (dt.mozUserCancelled || dt.dropEffect != "none") {
+          delete draggedTab._dragData;
+          return;
+        }
+
+        // Disable detach within the browser toolbox
+        var eX = event.screenX;
+        var eY = event.screenY;
+        var wX = window.screenX;
+        // check if the drop point is horizontally within the window
+        if (eX > wX && eX < (wX + window.outerWidth)) {
+          let bo = this.mTabstrip.boxObject;
+          // also avoid detaching if the the tab was dropped too close to
+          // the tabbar (half a tab)
+          let endScreenY = bo.screenY + 1.5 * bo.height;
+          if (eY < endScreenY && eY > window.screenY)
+            return;
+        }
+
+        // screen.availLeft et. al. only check the screen that this window is on,
+        // but we want to look at the screen the tab is being dropped onto.
+        var sX = {}, sY = {}, sWidth = {}, sHeight = {};
+        Cc["@mozilla.org/gfx/screenmanager;1"]
+          .getService(Ci.nsIScreenManager)
+          .screenForRect(eX, eY, 1, 1)
+          .GetAvailRect(sX, sY, sWidth, sHeight);
+        // ensure new window entirely within screen
+        var winWidth = Math.min(window.outerWidth, sWidth.value);
+        var winHeight = Math.min(window.outerHeight, sHeight.value);
+        var left = Math.min(Math.max(eX - draggedTab._dragData.offsetX, sX.value),
+                            sX.value + sWidth.value - winWidth);
+        var top = Math.min(Math.max(eY - draggedTab._dragData.offsetY, sY.value),
+                           sY.value + sHeight.value - winHeight);
+
+        delete draggedTab._dragData;
+
+        if (this.tabbrowser.tabs.length == 1) {
+          // resize _before_ move to ensure the window fits the new screen.  if
+          // the window is too large for its screen, the window manager may do
+          // automatic repositioning.
+          window.resizeTo(winWidth, winHeight);
+          window.moveTo(left, top);
+          window.focus();
+        } else {
+          this.tabbrowser.replaceTabWithWindow(draggedTab, { screenX: left,
+                                                             screenY: top,
+#ifndef XP_WIN
+                                                             outerWidth: winWidth,
+                                                             outerHeight: winHeight
+#endif
+                                                             });
+        }
+        event.stopPropagation();
+      ]]></handler>
+
+      <handler event="dragexit"><![CDATA[
+        this._dragTime = 0;
+
+        // This does not work at all (see bug 458613)
+        var target = event.relatedTarget;
+        while (target && target != this)
+          target = target.parentNode;
+        if (target)
+          return;
+
+        this._tabDropIndicator.collapsed = true;
+        event.stopPropagation();
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <!-- close-tab-button binding
+       This binding relies on the structure of the tabbrowser binding.
+       Therefore it should only be used as a child of the tab or the tabs
+       element (in both cases, when they are anonymous nodes of <tabbrowser>).
+  -->
+  <binding id="tabbrowser-close-tab-button"
+           extends="chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton-image">
+    <handlers>
+      <handler event="dragstart">
+        event.stopPropagation();
+      </handler>
+    </handlers>
+  </binding>
+
+  <binding id="tabbrowser-tab" display="xul:hbox"
+           extends="chrome://global/content/bindings/tabbox.xml#tab">
+    <resources>
+      <stylesheet src="chrome://browser/content/tabbrowser.css"/>
+    </resources>
+
+    <content context="tabContextMenu" closetabtext="&closeTab.label;">
+      <xul:stack class="tab-stack" flex="1">
+        <xul:hbox xbl:inherits="pinned,selected,titlechanged"
+                  class="tab-background">
+          <xul:hbox xbl:inherits="pinned,selected,titlechanged"
+                    class="tab-background-start"/>
+          <xul:hbox xbl:inherits="pinned,selected,titlechanged"
+                    class="tab-background-middle"/>
+          <xul:hbox xbl:inherits="pinned,selected,titlechanged"
+                    class="tab-background-end"/>
+        </xul:hbox>
+        <xul:hbox xbl:inherits="pinned,selected,titlechanged"
+                  class="tab-content" align="center">
+          <xul:image xbl:inherits="fadein,pinned,busy,progress,selected"
+                     class="tab-throbber"
+                     role="presentation"
+                     layer="true" />
+          <xul:image xbl:inherits="validate,src=image,fadein,pinned,selected"
+                     class="tab-icon-image"
+                     role="presentation"
+                     anonid="tab-icon"/>
+          <xul:image xbl:inherits="busy,soundplaying,soundplaying-scheduledremoval,pinned,muted,blocked,selected"
+                     anonid="overlay-icon"
+                     class="tab-icon-overlay"
+                     role="presentation"/>
+          <xul:label flex="1"
+                     xbl:inherits="value=label,crop,accesskey,fadein,pinned,selected"
+                     class="tab-text tab-label"
+                     role="presentation"/>
+          <xul:image xbl:inherits="soundplaying,soundplaying-scheduledremoval,pinned,muted,blocked,selected"
+                     anonid="soundplaying-icon"
+                     class="tab-icon-sound"
+                     role="presentation"/>
+          <xul:toolbarbutton anonid="close-button"
+                             xbl:inherits="fadein,pinned,selected"
+                             class="tab-close-button close-icon"/>
+        </xul:hbox>
+      </xul:stack>
+    </content>
+
+    <implementation>
+      <property name="pinned" readonly="true">
+        <getter>
+          return this.getAttribute("pinned") == "true";
+        </getter>
+      </property>
+      <property name="hidden" readonly="true">
+        <getter>
+          return this.getAttribute("hidden") == "true";
+        </getter>
+      </property>
+
+      <field name="mOverCloseButton">false</field>
+      <property name="_overPlayingIcon" readonly="true">
+        <getter><![CDATA[
+          let iconVisible = this.hasAttribute("soundplaying") ||
+                            this.hasAttribute("muted") ||
+                            this.hasAttribute("blocked");
+          let soundPlayingIcon =
+            document.getAnonymousElementByAttribute(this, "anonid", "soundplaying-icon");
+          let overlayIcon =
+            document.getAnonymousElementByAttribute(this, "anonid", "overlay-icon");
+
+          return soundPlayingIcon && soundPlayingIcon.matches(":hover") ||
+                 (overlayIcon && overlayIcon.matches(":hover") && iconVisible);
+        ]]></getter>
+      </property>
+      <field name="mCorrespondingMenuitem">null</field>
+      <field name="closing">false</field>
+      <field name="lastAccessed">0</field>
+      
+      <method name="toggleMuteAudio">
+        <parameter name="aMuteReason"/>
+        <body>
+        <![CDATA[
+          let tabContainer = this.parentNode;
+          let browser = this.linkedBrowser;
+          let modifiedAttrs = [];
+          if (browser.audioBlocked) {
+            this.removeAttribute("blocked");
+            modifiedAttrs.push("blocked");
+
+            // We don't want sound icon flickering between "blocked", "none" and
+            // "sound-playing", here adding the "soundplaying" is to keep the
+            // transition smoothly.
+            if (!this.hasAttribute("soundplaying")) {
+              this.setAttribute("soundplaying", true);
+              modifiedAttrs.push("soundplaying");
+            }
+
+            browser.resumeMedia();
+          } else {
+            if (browser.audioMuted) {
+              browser.unmute();
+              this.removeAttribute("muted");
+            } else {
+              browser.mute();
+              this.setAttribute("muted", "true");
+            }
+            this.muteReason = aMuteReason || null;
+            modifiedAttrs.push("muted");
+          }
+          tabContainer.tabbrowser._tabAttrModified(this, modifiedAttrs);
+        ]]>
+        </body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="mouseover"><![CDATA[
+        let anonid = event.originalTarget.getAttribute("anonid");
+        if (anonid == "close-button")
+          this.mOverCloseButton = true;
+
+        let tab = event.target;
+        if (tab.closing)
+          return;
+
+        let tabContainer = this.parentNode;
+        let visibleTabs = tabContainer.tabbrowser.visibleTabs;
+        let tabIndex = visibleTabs.indexOf(tab);
+        if (tabIndex == 0) {
+          tabContainer._beforeHoveredTab = null;
+        } else {
+          let candidate = visibleTabs[tabIndex - 1];
+          if (!candidate.selected) {
+            tabContainer._beforeHoveredTab = candidate;
+            candidate.setAttribute("beforehovered", "true");
+          }
+        }
+
+        if (tabIndex == visibleTabs.length - 1) {
+          tabContainer._afterHoveredTab = null;
+        } else {
+          let candidate = visibleTabs[tabIndex + 1];
+          if (!candidate.selected) {
+            tabContainer._afterHoveredTab = candidate;
+            candidate.setAttribute("afterhovered", "true");
+          }
+        }
+      ]]></handler>
+      <handler event="mouseout"><![CDATA[
+        let anonid = event.originalTarget.getAttribute("anonid");
+        if (anonid == "close-button")
+          this.mOverCloseButton = false;
+
+        let tabContainer = this.parentNode;
+        if (tabContainer._beforeHoveredTab) {
+          tabContainer._beforeHoveredTab.removeAttribute("beforehovered");
+          tabContainer._beforeHoveredTab = null;
+        }
+        if (tabContainer._afterHoveredTab) {
+          tabContainer._afterHoveredTab.removeAttribute("afterhovered");
+          tabContainer._afterHoveredTab = null;
+        }
+      ]]></handler>
+      <handler event="dragstart" phase="capturing">
+        this.style.MozUserFocus = '';
+      </handler>
+      <handler event="mousedown" phase="capturing">
+      <![CDATA[
+        if (this.selected) {
+          this.style.MozUserFocus = 'ignore';
+          this.clientTop; // just using this to flush style updates
+        } else if (this.mOverCloseButton ||
+                   this._overPlayingIcon) {
+          // Prevent tabbox.xml from selecting the tab.
+          event.stopPropagation();
+        }
+      ]]>
+      </handler>
+      <handler event="mouseup">
+        this.style.MozUserFocus = '';
+      </handler>
+      <handler event="click">
+      <![CDATA[
+        if (event.button != 0) {
+          return;
+        }
+
+        if (this._overPlayingIcon) {
+          this.toggleMuteAudio();
+        }
+      ]]>
+      </handler>
+    </handlers>
+  </binding>
+
+  <binding id="tabbrowser-alltabs-popup"
+           extends="chrome://global/content/bindings/popup.xml#popup">
+    <implementation implements="nsIDOMEventListener">
+      <method name="_tabOnAttrModified">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          var tab = aEvent.target;
+          if (tab.mCorrespondingMenuitem)
+            this._setMenuitemAttributes(tab.mCorrespondingMenuitem, tab);
+        ]]></body>
+      </method>
+
+      <method name="_tabOnTabClose">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          var tab = aEvent.target;
+          if (tab.mCorrespondingMenuitem)
+            this.removeChild(tab.mCorrespondingMenuitem);
+        ]]></body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          switch (aEvent.type) {
+            case "TabAttrModified":
+              this._tabOnAttrModified(aEvent);
+              break;
+            case "TabClose":
+              this._tabOnTabClose(aEvent);
+              break;
+            case "scroll":
+              this._updateTabsVisibilityStatus();
+              break;
+          }
+        ]]></body>
+      </method>
+
+      <method name="_updateTabsVisibilityStatus">
+        <body><![CDATA[
+          var tabContainer = gBrowser.tabContainer;
+          // We don't want menu item decoration unless there is overflow.
+          if (tabContainer.getAttribute("overflow") != "true")
+            return;
+
+          var tabstripBO = tabContainer.mTabstrip.scrollBoxObject;
+          for (var i = 0; i < this.childNodes.length; i++) {
+            let curTab = this.childNodes[i].tab;
+            let curTabBO = curTab.boxObject;
+            if (curTabBO.screenX >= tabstripBO.screenX &&
+                curTabBO.screenX + curTabBO.width <= tabstripBO.screenX + tabstripBO.width)
+              this.childNodes[i].setAttribute("tabIsVisible", "true");
+            else
+              this.childNodes[i].removeAttribute("tabIsVisible");
+          }
+        ]]></body>
+      </method>
+
+      <method name="_createTabMenuItem">
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          var menuItem = document.createElementNS(
+            "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul",
+            "menuitem");
+
+          menuItem.setAttribute("class", "menuitem-iconic alltabs-item menuitem-with-favicon");
+
+          this._setMenuitemAttributes(menuItem, aTab);
+
+          if (!aTab.mCorrespondingMenuitem) {
+            aTab.mCorrespondingMenuitem = menuItem;
+            menuItem.tab = aTab;
+
+            this.appendChild(menuItem);
+          }
+        ]]></body>
+      </method>
+
+      <method name="_setMenuitemAttributes">
+        <parameter name="aMenuitem"/>
+        <parameter name="aTab"/>
+        <body><![CDATA[
+          aMenuitem.setAttribute("label", aTab.label);
+          aMenuitem.setAttribute("crop", aTab.getAttribute("crop"));
+
+          if (aTab.hasAttribute("busy")) {
+            aMenuitem.setAttribute("busy", aTab.getAttribute("busy"));
+            aMenuitem.removeAttribute("image");
+          } else {
+            aMenuitem.setAttribute("image", aTab.getAttribute("image"));
+            aMenuitem.removeAttribute("busy");
+          }
+
+          if (aTab.hasAttribute("pending"))
+            aMenuitem.setAttribute("pending", aTab.getAttribute("pending"));
+          else
+            aMenuitem.removeAttribute("pending");
+
+          if (aTab.selected)
+            aMenuitem.setAttribute("selected", "true");
+          else
+            aMenuitem.removeAttribute("selected");
+
+          function addEndImage() {
+            let endImage = document.createElement("image");
+            endImage.setAttribute("class", "allTabs-endimage");
+            let endImageContainer = document.createElement("hbox");
+            endImageContainer.setAttribute("align", "center");
+            endImageContainer.setAttribute("pack", "center");
+            endImageContainer.appendChild(endImage);
+            aMenuitem.appendChild(endImageContainer);
+            return endImage;
+          }
+
+          if (aMenuitem.firstChild)
+            aMenuitem.firstChild.remove();
+          if (aTab.hasAttribute("muted"))
+            addEndImage().setAttribute("muted", "true");
+          else if (aTab.hasAttribute("soundplaying"))
+            addEndImage().setAttribute("soundplaying", "true");
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="popupshowing">
+      <![CDATA[
+        var tabcontainer = gBrowser.tabContainer;
+
+        // Listen for changes in the tab bar.
+        tabcontainer.addEventListener("TabAttrModified", this, false);
+        tabcontainer.addEventListener("TabClose", this, false);
+        tabcontainer.mTabstrip.addEventListener("scroll", this, false);
+
+        let tabs = gBrowser.visibleTabs;
+        for (var i = 0; i < tabs.length; i++) {
+          if (!tabs[i].pinned)
+            this._createTabMenuItem(tabs[i]);
+        }
+        this._updateTabsVisibilityStatus();
+      ]]></handler>
+
+      <handler event="popuphidden">
+      <![CDATA[
+        // clear out the menu popup and remove the listeners
+        for (let i = this.childNodes.length - 1; i >= 0; i--) {
+          let menuItem = this.childNodes[i];
+          if (menuItem.tab) {
+            menuItem.tab.mCorrespondingMenuitem = null;
+            this.removeChild(menuItem);
+          }
+        }
+        var tabcontainer = gBrowser.tabContainer;
+        tabcontainer.mTabstrip.removeEventListener("scroll", this, false);
+        tabcontainer.removeEventListener("TabAttrModified", this, false);
+        tabcontainer.removeEventListener("TabClose", this, false);
+      ]]></handler>
+
+      <handler event="DOMMenuItemActive">
+      <![CDATA[
+        var tab = event.target.tab;
+        if (tab) {
+          let overLink = tab.linkedBrowser.currentURI.spec;
+          if (overLink == "about:blank")
+            overLink = "";
+          XULBrowserWindow.setOverLink(overLink, null);
+        }
+      ]]></handler>
+
+      <handler event="DOMMenuItemInactive">
+      <![CDATA[
+        XULBrowserWindow.setOverLink("", null);
+      ]]></handler>
+
+      <handler event="command"><![CDATA[
+        if (event.target.tab)
+          gBrowser.selectedTab = event.target.tab;
+      ]]></handler>
+
+    </handlers>
+  </binding>
+
+  <binding id="statuspanel" display="xul:hbox">
+    <content>
+      <xul:hbox class="statuspanel-inner">
+        <xul:label class="statuspanel-label"
+                   role="status"
+                   aria-live="off"
+                   xbl:inherits="value=label,crop,mirror"
+                   flex="1"
+                   crop="end"/>
+      </xul:hbox>
+    </content>
+
+    <implementation implements="nsIDOMEventListener">
+      <constructor><![CDATA[
+        window.addEventListener("resize", this, false);
+      ]]></constructor>
+
+      <destructor><![CDATA[
+        window.removeEventListener("resize", this, false);
+        MousePosTracker.removeListener(this);
+      ]]></destructor>
+
+      <property name="label">
+        <setter><![CDATA[
+          if (!this.label) {
+            this.removeAttribute("mirror");
+            this.removeAttribute("sizelimit");
+          }
+
+          this.style.minWidth = this.getAttribute("type") == "status" &&
+                                this.getAttribute("previoustype") == "status"
+                                  ? getComputedStyle(this).width : "";
+
+          if (val) {
+            this.setAttribute("label", val);
+            this.removeAttribute("inactive");
+            this._calcMouseTargetRect();
+            MousePosTracker.addListener(this);
+          } else {
+            this.setAttribute("inactive", "true");
+            MousePosTracker.removeListener(this);
+          }
+
+          return val;
+        ]]></setter>
+        <getter>
+          return this.hasAttribute("inactive") ? "" : this.getAttribute("label");
+        </getter>
+      </property>
+
+      <method name="getMouseTargetRect">
+        <body><![CDATA[
+          return this._mouseTargetRect;
+        ]]></body>
+      </method>
+
+      <method name="onMouseEnter">
+        <body>
+          this._mirror();
+        </body>
+      </method>
+
+      <method name="onMouseLeave">
+        <body>
+          this._mirror();
+        </body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="event"/>
+        <body><![CDATA[
+          if (!this.label)
+            return;
+
+          switch (event.type) {
+            case "resize":
+              this._calcMouseTargetRect();
+              break;
+          }
+        ]]></body>
+      </method>
+
+      <method name="_calcMouseTargetRect">
+        <body><![CDATA[
+          let alignRight = false;
+
+          if (getComputedStyle(document.documentElement).direction == "rtl")
+            alignRight = !alignRight;
+
+          let rect = this.getBoundingClientRect();
+          this._mouseTargetRect = {
+            top:    rect.top,
+            bottom: rect.bottom,
+            left:   alignRight ? window.innerWidth - rect.width : 0,
+            right:  alignRight ? window.innerWidth : rect.width
+          };
+        ]]></body>
+      </method>
+
+      <method name="_mirror">
+        <body>
+          if (this.hasAttribute("mirror"))
+            this.removeAttribute("mirror");
+          else
+            this.setAttribute("mirror", "true");
+
+          if (!this.hasAttribute("sizelimit")) {
+            this.setAttribute("sizelimit", "true");
+            this._calcMouseTargetRect();
+          }
+        </body>
+      </method>
+    </implementation>
+  </binding>
+
+</bindings>
diff --git a/webbrowser/base/content/test/general/audio.ogg b/webbrowser/base/content/test/general/audio.ogg
new file mode 100644
index 0000000..7e6ef77
--- /dev/null
+++ b/webbrowser/base/content/test/general/audio.ogg
diff --git a/webbrowser/base/content/urlbarBindings.xml b/webbrowser/base/content/urlbarBindings.xml
new file mode 100644
index 0000000..d2d9cc7
--- /dev/null
+++ b/webbrowser/base/content/urlbarBindings.xml
@@ -0,0 +1,1800 @@
+<?xml version="1.0"?>
+
+# -*- Mode: HTML -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<!DOCTYPE bindings [
+<!ENTITY % notificationDTD SYSTEM "chrome://global/locale/notification.dtd">
+%notificationDTD;
+<!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd">
+%browserDTD;
+]>
+
+<bindings id="urlbarBindings" xmlns="http://www.mozilla.org/xbl"
+          xmlns:html="http://www.w3.org/1999/xhtml"
+          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+          xmlns:xbl="http://www.mozilla.org/xbl">
+
+  <binding id="urlbar" extends="chrome://browser/content/autocomplete.xml#private-autocomplete">
+
+    <content sizetopopup="pref">
+      <xul:hbox anonid="textbox-container"
+                class="private-autocomplete-textbox-container urlbar-textbox-container"
+                flex="1" xbl:inherits="focused">
+        <children includes="image|deck|stack|box">
+          <xul:image class="private-autocomplete-icon" allowevents="true"/>
+        </children>
+        <xul:hbox anonid="textbox-input-box"
+                  class="textbox-input-box urlbar-input-box"
+                  flex="1" xbl:inherits="tooltiptext=inputtooltiptext">
+          <children/>
+          <html:input anonid="input"
+                      class="private-autocomplete-textbox urlbar-input textbox-input uri-element-right-align"
+                      allowevents="true"
+                      xbl:inherits="tooltiptext=inputtooltiptext,value,type,maxlength,disabled,size,readonly,placeholder,tabindex,accesskey"/>
+        </xul:hbox>
+        <children includes="hbox"/>
+      </xul:hbox>
+      <xul:dropmarker anonid="historydropmarker"
+                      class="private-autocomplete-history-dropmarker urlbar-history-dropmarker"
+                      allowevents="true"
+                      xbl:inherits="open,enablehistory,parentfocused=focused"/>
+      <xul:popupset anonid="popupset"
+                    class="private-autocomplete-result-popupset"/>
+      <children includes="toolbarbutton"/>
+    </content>
+
+    <implementation implements="nsIObserver, nsIDOMEventListener">
+      <constructor><![CDATA[
+        this._prefs = Components.classes["@mozilla.org/preferences-service;1"]
+                                .getService(Components.interfaces.nsIPrefService)
+                                .getBranch("browser.urlbar.");
+
+        this._prefs.addObserver("", this, false);
+        this.clickSelectsAll = this._prefs.getBoolPref("clickSelectsAll");
+        this.doubleClickSelectsAll = this._prefs.getBoolPref("doubleClickSelectsAll");
+        this.completeDefaultIndex = this._prefs.getBoolPref("autoFill");
+        this.timeout = this._prefs.getIntPref("delay");
+        this._formattingEnabled = this._prefs.getBoolPref("formatting.enabled");
+        this._mayTrimURLs = this._prefs.getBoolPref("trimURLs");
+
+        this.inputField.controllers.insertControllerAt(0, this._copyCutController);
+        this.inputField.addEventListener("mousedown", this, false);
+        this.inputField.addEventListener("mousemove", this, false);
+        this.inputField.addEventListener("mouseout", this, false);
+        this.inputField.addEventListener("overflow", this, false);
+        this.inputField.addEventListener("underflow", this, false);
+
+        const kXULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+        var textBox = document.getAnonymousElementByAttribute(this,
+                                                "anonid", "textbox-input-box");
+        var cxmenu = document.getAnonymousElementByAttribute(textBox,
+                                            "anonid", "input-box-contextmenu");
+        var pasteAndGo;
+        cxmenu.addEventListener("popupshowing", function() {
+          if (!pasteAndGo)
+            return;
+          var controller = document.commandDispatcher.getControllerForCommand("cmd_paste");
+          var enabled = controller.isCommandEnabled("cmd_paste");
+          if (enabled)
+            pasteAndGo.removeAttribute("disabled");
+          else
+            pasteAndGo.setAttribute("disabled", "true");
+        }, false);
+
+        var insertLocation = cxmenu.firstChild;
+        while (insertLocation.nextSibling &&
+               insertLocation.getAttribute("cmd") != "cmd_paste")
+          insertLocation = insertLocation.nextSibling;
+        if (insertLocation) {
+          pasteAndGo = document.createElement("menuitem");
+          let label = Services.strings.createBundle("chrome://browser/locale/browser.properties").
+                                   GetStringFromName("pasteAndGo.label");
+          pasteAndGo.setAttribute("label", label);
+          pasteAndGo.setAttribute("anonid", "paste-and-go");
+          pasteAndGo.setAttribute("oncommand",
+              "gURLBar.select(); goDoCommand('cmd_paste'); gURLBar.handleCommand();");
+          cxmenu.insertBefore(pasteAndGo, insertLocation.nextSibling);
+        }
+      ]]></constructor>
+
+      <destructor><![CDATA[
+        this._prefs.removeObserver("", this);
+        this._prefs = null;
+        this.inputField.controllers.removeController(this._copyCutController);
+        this.inputField.removeEventListener("mousedown", this, false);
+        this.inputField.removeEventListener("mousemove", this, false);
+        this.inputField.removeEventListener("mouseout", this, false);
+        this.inputField.removeEventListener("overflow", this, false);
+        this.inputField.removeEventListener("underflow", this, false);
+      ]]></destructor>
+
+      <field name="_value">""</field>
+
+      <!--
+        onBeforeValueGet is called by the base-binding's .value getter.
+        It can return an object with a "value" property, to override the
+        return value of the getter.
+      -->
+      <method name="onBeforeValueGet">
+        <body><![CDATA[
+          if (this.hasAttribute("actiontype"))
+            return {value: this._value};
+          return null;
+        ]]></body>
+      </method>
+
+      <!--
+        onBeforeValueSet is called by the base-binding's .value setter.
+        It should return the value that the setter should use.
+      -->
+      <method name="onBeforeValueSet">
+        <parameter name="aValue"/>
+        <body><![CDATA[
+          this._value = aValue;
+          var returnValue = aValue;
+          var action = this._parseActionUrl(aValue);
+
+          if (action) {
+            returnValue = action.param;
+          }
+
+          // Set the actiontype only if the user is not overriding actions.
+          if (action && this._noActionsKeys.size == 0) {
+            this.setAttribute("actiontype", action.type);
+          } else {
+            this.removeAttribute("actiontype");
+          }
+          return returnValue;
+        ]]></body>
+      </method>
+
+      <field name="_mayTrimURLs">true</field>
+      <method name="trimValue">
+        <parameter name="aURL"/>
+        <body><![CDATA[
+          // This method must not modify the given URL such that calling
+          // nsIURIFixup::createFixupURI with the result will produce a different URI.
+          return this._mayTrimURLs ? trimURL(aURL) : aURL;
+        ]]></body>
+      </method>
+
+      <field name="_formattingEnabled">true</field>
+      <method name="formatValue">
+        <body><![CDATA[
+          if (!this._formattingEnabled || this.focused)
+            return;
+
+          let controller = this.editor.selectionController;
+          let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
+          selection.removeAllRanges();
+
+          let textNode = this.editor.rootElement.firstChild;
+          let value = textNode.textContent;
+
+          let protocol = value.match(/^[a-z\d.+\-]+:(?=[^\d])/);
+          if (protocol &&
+              ["http:", "https:", "ftp:"].indexOf(protocol[0]) == -1)
+            return;
+          let matchedURL = value.match(/^((?:[a-z]+:\/\/)?(?:[^\/]+@)?)(.+?)(?::\d+)?(?:\/|$)/);
+          if (!matchedURL)
+            return;
+
+          let [, preDomain, domain] = matchedURL;
+          let baseDomain = domain;
+          let subDomain = "";
+          // getBaseDomainFromHost doesn't recognize IPv6 literals in brackets as IPs (bug 667159)
+          if (domain[0] != "[") {
+            try {
+              baseDomain = Services.eTLD.getBaseDomainFromHost(domain);
+              if (!domain.endsWith(baseDomain)) {
+                // getBaseDomainFromHost converts its resultant to ACE.
+                let IDNService = Cc["@mozilla.org/network/idn-service;1"]
+                                 .getService(Ci.nsIIDNService);
+                baseDomain = IDNService.convertACEtoUTF8(baseDomain);
+              }
+            } catch (e) {}
+          }
+          if (baseDomain != domain) {
+            subDomain = domain.slice(0, -baseDomain.length);
+          }
+
+          let rangeLength = preDomain.length + subDomain.length;
+          if (rangeLength) {
+            let range = document.createRange();
+            range.setStart(textNode, 0);
+            range.setEnd(textNode, rangeLength);
+            selection.addRange(range);
+          }
+
+          let startRest = preDomain.length + domain.length;
+          if (startRest < value.length) {
+            let range = document.createRange();
+            range.setStart(textNode, startRest);
+            range.setEnd(textNode, value.length);
+            selection.addRange(range);
+          }
+        ]]></body>
+      </method>
+
+      <method name="_clearFormatting">
+        <body><![CDATA[
+          if (!this._formattingEnabled)
+            return;
+
+          let controller = this.editor.selectionController;
+          let selection = controller.getSelection(controller.SELECTION_URLSECONDARY);
+          selection.removeAllRanges();
+        ]]></body>
+      </method>
+
+      <method name="handleRevert">
+        <body><![CDATA[
+          var isScrolling = this.popupOpen;
+
+          gBrowser.userTypedValue = null;
+
+          // don't revert to last valid url unless page is NOT loading
+          // and user is NOT key-scrolling through autocomplete list
+          if (!XULBrowserWindow.isBusy && !isScrolling) {
+            URLBarSetURI();
+
+            // If the value isn't empty and the urlbar has focus, select the value.
+            if (this.value && this.hasAttribute("focused"))
+              this.select();
+          }
+
+          // tell widget to revert to last typed text only if the user
+          // was scrolling when they hit escape
+          return !isScrolling;
+        ]]></body>
+      </method>
+
+      <method name="handleCommand">
+        <parameter name="aTriggeringEvent"/>
+        <body><![CDATA[
+          if (aTriggeringEvent instanceof MouseEvent && aTriggeringEvent.button == 2)
+            return; // Do nothing for right clicks
+
+          var url = this.value;
+          var mayInheritPrincipal = false;
+          var postData = null;
+
+          var action = this._parseActionUrl(url);
+          let lastLocationChange = gBrowser.selectedBrowser.lastLocationChange;
+
+          let matchLastLocationChange = true;
+          if (action) {
+            url = action.param;
+            if (this.hasAttribute("actiontype")) {
+              if (action.type == "switchtab") {
+                this.handleRevert();
+                let prevTab = gBrowser.selectedTab;
+                if (switchToTabHavingURI(url) &&
+                    isTabEmpty(prevTab))
+                  gBrowser.removeTab(prevTab);
+              }
+              return;
+            }
+            continueOperation.call(this);
+          }
+          else {
+            this._canonizeURL(aTriggeringEvent, response => {
+              [url, postData, mayInheritPrincipal] = response;
+              if (url) {
+                matchLastLocationChange = (lastLocationChange ==
+                                           gBrowser.selectedBrowser.lastLocationChange);
+                continueOperation.call(this);
+              }
+            });
+          }
+
+          function continueOperation()
+          {
+            this.value = url;
+            gBrowser.userTypedValue = url;
+            try {
+              addToUrlbarHistory(url);
+            } catch (ex) {
+              // Things may go wrong when adding url to session history,
+              // but don't let that interfere with the loading of the url.
+              Cu.reportError(ex);
+            }
+            
+            // Reset DOS mitigations for the basic auth prompt.
+            let browser = gBrowser.selectedBrowser;
+            delete browser.authPromptCounter;
+
+            function loadCurrent() {
+              let flags = Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+              // Pass LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL to prevent any loads from
+              // inheriting the currently loaded document's principal, unless this
+              // URL is marked as safe to inherit (e.g. came from a bookmark
+              // keyword).
+              if (!mayInheritPrincipal)
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
+              // If the value wasn't typed, we know that we decoded the value as
+              // UTF-8 (see losslessDecodeURI)
+              if (!this.valueIsTyped)
+                flags |= Ci.nsIWebNavigation.LOAD_FLAGS_URI_IS_UTF8;
+              gBrowser.loadURIWithFlags(url, flags, null, null, postData);
+            }
+
+            // Focus the content area before triggering loads, since if the load
+            // occurs in a new tab, we want focus to be restored to the content
+            // area when the current tab is re-selected.
+            gBrowser.selectedBrowser.focus();
+
+            let isMouseEvent = aTriggeringEvent instanceof MouseEvent;
+
+            // If the current tab is empty, ignore Alt+Enter (just reuse this tab)
+            let altEnter = !isMouseEvent && aTriggeringEvent &&
+              aTriggeringEvent.altKey && !isTabEmpty(gBrowser.selectedTab);
+
+            if (isMouseEvent || altEnter) {
+              // Use the standard UI link behaviors for clicks or Alt+Enter
+              let where = "tab";
+              if (isMouseEvent)
+                where = whereToOpenLink(aTriggeringEvent, false, false);
+
+              if (where == "current") {
+                if (matchLastLocationChange) {
+                  loadCurrent();
+                }
+              } else {
+                this.handleRevert();
+                let params = { allowThirdPartyFixup: true,
+                               postData: postData,
+                               initiatingDoc: document };
+                if (!this.valueIsTyped)
+                  params.isUTF8 = true;
+                openUILinkIn(url, where, params);
+              }
+            } else {
+              if (matchLastLocationChange) {
+                loadCurrent();
+              }
+            }
+          }
+        ]]></body>
+      </method>
+
+      <method name="_canonizeURL">
+        <parameter name="aTriggeringEvent"/>
+        <parameter name="aCallback"/>
+        <body><![CDATA[
+          var url = this.value;
+          if (!url) {
+            aCallback(["", null, false]);
+            return;
+          }
+
+          // Only add the suffix when the URL bar value isn't already "URL-like",
+          // and only if we get a keyboard event, to match user expectations.
+          if (/^\s*[^.:\/\s]+(?:\/.*|\s*)$/i.test(url) &&
+              (aTriggeringEvent instanceof KeyEvent)) {
+#ifdef XP_MACOSX
+            let accel = aTriggeringEvent.metaKey;
+#else
+            let accel = aTriggeringEvent.ctrlKey;
+#endif
+            let shift = aTriggeringEvent.shiftKey;
+
+            let suffix = "";
+
+            switch (true) {
+              case (accel && shift):
+                suffix = ".org/";
+                break;
+              case (shift):
+                suffix = ".net/";
+                break;
+              case (accel):
+                try {
+                  suffix = gPrefService.getCharPref("browser.fixup.alternate.suffix");
+                  if (suffix.charAt(suffix.length - 1) != "/")
+                    suffix += "/";
+                } catch(e) {
+                  suffix = ".com/";
+                }
+                break;
+            }
+
+            if (suffix) {
+              // trim leading/trailing spaces (bug 233205)
+              url = url.trim();
+
+              // Tack www. and suffix on.  If user has appended directories, insert
+              // suffix before them (bug 279035).  Be careful not to get two slashes.
+
+              let firstSlash = url.indexOf("/");
+
+              if (firstSlash >= 0) {
+                url = url.substring(0, firstSlash) + suffix +
+                      url.substring(firstSlash + 1);
+              } else {
+                url = url + suffix;
+              }
+
+              url = "http://www." + url;
+            }
+          }
+
+          getShortcutOrURIAndPostData(url).then(data => {
+            aCallback([data.url, data.postData, data.mayInheritPrincipal]);
+          });
+        ]]></body>
+      </method>
+
+      <field name="_contentIsCropped">false</field>
+
+      <method name="_initURLTooltip">
+        <body><![CDATA[
+          if (this.focused || !this._contentIsCropped)
+            return;
+          this.inputField.setAttribute("tooltiptext", this.value);
+        ]]></body>
+      </method>
+
+      <method name="_hideURLTooltip">
+        <body><![CDATA[
+          this.inputField.removeAttribute("tooltiptext");
+        ]]></body>
+      </method>
+
+      <method name="onDragOver">
+        <parameter name="aEvent"/>
+        <body>
+          var types = aEvent.dataTransfer.types;
+          if (types.contains("application/x-moz-file") ||
+              types.contains("text/x-moz-url") ||
+              types.contains("text/uri-list") ||
+              types.contains("text/unicode"))
+            aEvent.preventDefault();
+        </body>
+      </method>
+
+      <method name="onDrop">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          let links = browserDragAndDrop.dropLinks(aEvent);
+
+          // The URL bar automatically handles inputs with newline characters,
+          // so we can get away with treating text/x-moz-url flavours as text/plain.
+          if (links.length > 0 && links[0].url) {
+            let url = links[0].url;
+            aEvent.preventDefault();
+            this.value = url;
+            SetPageProxyState("invalid");
+            this.focus();
+            try {
+              urlSecurityCheck(url,
+                               gBrowser.contentPrincipal,
+                               Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
+            } catch (ex) {
+              return;
+            }
+            this.handleCommand();
+            // Force not showing the dropped URI immediately.
+            gBrowser.userTypedValue = null;
+            URLBarSetURI();            
+          }
+        ]]></body>
+      </method>
+
+      <method name="_getSelectedValueForClipboard">
+        <body><![CDATA[
+          // Grab the actual input field's value, not our value, which could include moz-action:
+          var inputVal = this.inputField.value;
+          var selectedVal = inputVal.substring(this.selectionStart, this.selectionEnd);
+
+          // If the selection doesn't start at the beginning or doesn't span the full domain or
+          // the URL bar is modified, nothing else to do here.
+          if (this.selectionStart > 0 || this.valueIsTyped)
+            return selectedVal;
+          // The selection doesn't span the full domain if it doesn't contain a slash and is
+          // followed by some character other than a slash.
+          if (!selectedVal.includes("/")) {
+            let remainder = inputVal.replace(selectedVal, "");
+            if (remainder != "" && remainder[0] != "/")
+              return selectedVal;
+          }
+
+          let uriFixup = Cc["@mozilla.org/docshell/urifixup;1"].getService(Ci.nsIURIFixup);
+
+          let uri;
+          try {
+            uri = uriFixup.createFixupURI(inputVal, Ci.nsIURIFixup.FIXUP_FLAG_NONE);
+          } catch (e) {}
+          if (!uri)
+            return selectedVal;
+
+          // Only copy exposable URIs
+          try {
+            uri = uriFixup.createExposableURI(uri);
+          } catch (ex) {}
+
+          // If the entire URL is selected, just use the actual loaded URI.
+          if (inputVal == selectedVal) {
+            // ... but only if  isn't a javascript: or data: URI, since those
+            // are hard to read when encoded
+            if (!uri.schemeIs("javascript") && !uri.schemeIs("data")) {
+              // Parentheses are known to confuse third-party applications (bug 458565).
+              selectedVal = uri.spec.replace(/[()]/g, function (c) escape(c));
+            }
+
+            return selectedVal;
+          }
+
+          // Just the beginning of the URL is selected, check for a trimmed
+          // value
+          let spec = uri.spec;
+          let trimmedSpec = this.trimValue(spec);
+          if (spec != trimmedSpec) {
+            // Prepend the portion that trimValue removed from the beginning.
+            // This assumes trimValue will only truncate the URL at
+            // the beginning or end (or both).
+            let trimmedSegments = spec.split(trimmedSpec);
+            selectedVal = trimmedSegments[0] + selectedVal;
+          }
+
+          return selectedVal;
+        ]]></body>
+      </method>
+
+      <field name="_copyCutController"><![CDATA[
+        ({
+          urlbar: this,
+          doCommand: function(aCommand) {
+            var urlbar = this.urlbar;
+            var val = urlbar._getSelectedValueForClipboard();
+            if (!val)
+              return;
+
+            if (aCommand == "cmd_cut" && this.isCommandEnabled(aCommand)) {
+              let start = urlbar.selectionStart;
+              let end = urlbar.selectionEnd;
+              urlbar.inputField.value = urlbar.inputField.value.substring(0, start) +
+                                        urlbar.inputField.value.substring(end);
+              urlbar.selectionStart = urlbar.selectionEnd = start;
+              urlbar.removeAttribute("actiontype");
+              SetPageProxyState("invalid");
+            }
+
+            Cc["@mozilla.org/widget/clipboardhelper;1"]
+              .getService(Ci.nsIClipboardHelper)
+              .copyString(val, document);
+          },
+          supportsCommand: function(aCommand) {
+            switch (aCommand) {
+              case "cmd_copy":
+              case "cmd_cut":
+                return true;
+            }
+            return false;
+          },
+          isCommandEnabled: function(aCommand) {
+            return this.supportsCommand(aCommand) &&
+                   (aCommand != "cmd_cut" || !this.urlbar.readOnly) &&
+                   this.urlbar.selectionStart < this.urlbar.selectionEnd;
+          },
+          onEvent: function(aEventName) {}
+        })
+      ]]></field>
+
+      <method name="observe">
+        <parameter name="aSubject"/>
+        <parameter name="aTopic"/>
+        <parameter name="aData"/>
+        <body><![CDATA[
+          if (aTopic == "nsPref:changed") {
+            switch (aData) {
+              case "clickSelectsAll":
+              case "doubleClickSelectsAll":
+                this[aData] = this._prefs.getBoolPref(aData);
+                break;
+              case "autoFill":
+                this.completeDefaultIndex = this._prefs.getBoolPref(aData);
+                break;
+              case "delay":
+                this.timeout = this._prefs.getIntPref(aData);
+                break;
+              case "formatting.enabled":
+                this._formattingEnabled = this._prefs.getBoolPref(aData);
+                break;
+              case "trimURLs":
+                this._mayTrimURLs = this._prefs.getBoolPref(aData);
+                break;
+            }
+          }
+        ]]></body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          switch (aEvent.type) {
+            case "mousedown":
+              if (this.doubleClickSelectsAll &&
+                  aEvent.button == 0 && aEvent.detail == 2) {
+                this.editor.selectAll();
+                aEvent.preventDefault();
+              }
+              break;
+            case "mousemove":
+              this._initURLTooltip();
+              break;
+            case "mouseout":
+              this._hideURLTooltip();
+              break;
+            case "overflow":
+              this._contentIsCropped = true;
+              break;
+            case "underflow":
+              this._contentIsCropped = false;
+              this._hideURLTooltip();
+              break;
+          }
+        ]]></body>
+      </method>
+
+      <property name="textValue"
+                onget="return this.value;">
+        <setter>
+          <![CDATA[
+          try {
+            val = losslessDecodeURI(makeURI(val));
+          } catch (ex) { }
+
+          // Trim popup selected values, but never trim results coming from
+          // autofill.
+          if (this.popup.selectedIndex == -1)
+            this._disableTrim = true;
+          this.value = val;
+          this._disableTrim = false;
+
+          // Completing a result should simulate the user typing the result, so
+          // fire an input event.
+          let evt = document.createEvent("UIEvents");
+          evt.initUIEvent("input", true, false, window, 0);
+          this.mIgnoreInput = true;
+          this.dispatchEvent(evt);
+          this.mIgnoreInput = false;
+
+          return this.value;
+          ]]>
+        </setter>
+      </property>
+
+      <method name="_parseActionUrl">
+        <parameter name="aUrl"/>
+        <body><![CDATA[
+          if (!aUrl.startsWith("moz-action:"))
+            return null;
+
+          // url is in the format moz-action:ACTION,PARAM
+          let [, action, param] = aUrl.match(/^moz-action:([^,]+),(.*)$/);
+          return {type: action, param: param};
+        ]]></body>
+      </method>
+
+      <field name="_noActionsKeys"><![CDATA[
+        new Set();
+      ]]></field>
+
+      <method name="_clearNoActions">
+        <parameter name="aURL"/>
+        <body><![CDATA[
+          this._noActionsKeys.clear();
+          this.popup.removeAttribute("noactions");
+          let action = this._parseActionUrl(this._value);
+          if (action)
+            this.setAttribute("actiontype", action.type);
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="keydown"><![CDATA[
+        if ((event.keyCode === KeyEvent.DOM_VK_ALT ||
+             event.keyCode === KeyEvent.DOM_VK_SHIFT) &&
+            this.popup.selectedIndex >= 0 &&
+            !this._noActionsKeys.has(event.keyCode)) {
+          if (this._noActionsKeys.size == 0) {
+            this.popup.setAttribute("noactions", "true");
+            this.removeAttribute("actiontype");
+          }
+          this._noActionsKeys.add(event.keyCode);
+        }
+      ]]></handler>
+
+      <handler event="keyup"><![CDATA[
+        if ((event.keyCode === KeyEvent.DOM_VK_ALT ||
+             event.keyCode === KeyEvent.DOM_VK_SHIFT) &&
+            this._noActionsKeys.has(event.keyCode)) {
+          this._noActionsKeys.delete(event.keyCode);
+          if (this._noActionsKeys.size == 0)
+            this._clearNoActions();
+        }
+      ]]></handler>
+
+      <handler event="blur"><![CDATA[
+        if (event.originalTarget != this.inputField)
+          return;
+        this._clearNoActions();
+        this.formatValue();
+      ]]></handler>
+
+      <handler event="dragstart" phase="capturing"><![CDATA[
+        // Drag only if the gesture starts from the input field.
+        if (event.originalTarget != this.inputField)
+          return;
+
+        // Drag only if the entire value is selected and it's a valid URI.
+        var isFullSelection = this.selectionStart == 0 &&
+                              this.selectionEnd == this.textLength;
+        if (!isFullSelection ||
+            this.getAttribute("pageproxystate") != "valid")
+          return;
+
+        var urlString = content.location.href;
+        var title = content.document.title || urlString;
+        var htmlString = "<a href=\"" + urlString + "\">" + urlString + "</a>";
+
+        var dt = event.dataTransfer;
+        dt.setData("text/x-moz-url", urlString + "\n" + title);
+        dt.setData("text/unicode", urlString);
+        dt.setData("text/html", htmlString);
+
+        dt.effectAllowed = "copyLink";
+        event.stopPropagation();
+      ]]></handler>
+
+      <handler event="focus" phase="capturing"><![CDATA[
+        if (event.originalTarget != this.inputField)
+          return;
+        this._hideURLTooltip();
+        this._clearFormatting();
+      ]]></handler>
+
+      <handler event="dragover" phase="capturing" action="this.onDragOver(event, this);"/>
+      <handler event="drop" phase="capturing" action="this.onDrop(event, this);"/>
+      <handler event="select"><![CDATA[
+        if (!Cc["@mozilla.org/widget/clipboard;1"]
+               .getService(Ci.nsIClipboard)
+               .supportsSelectionClipboard())
+          return;
+        
+        // Check if this selection was actually user-generated, and exit if not
+        // to prevent copying the selection (e.g autofill) to clipboard/primary
+        if (!window.QueryInterface(Ci.nsIInterfaceRequestor)
+                   .getInterface(Ci.nsIDOMWindowUtils)
+                   .isHandlingUserInput)
+          return;
+
+        var val = this._getSelectedValueForClipboard();
+        if (!val)
+          return;
+
+        Cc["@mozilla.org/widget/clipboardhelper;1"]
+          .getService(Ci.nsIClipboardHelper)
+          .copyStringToClipboard(val, Ci.nsIClipboard.kSelectionClipboard, document);
+      ]]></handler>
+    </handlers>
+
+  </binding>
+
+  <!-- Note: this binding is applied to the autocomplete popup used in the Search bar and in web page content -->
+  <binding id="browser-autocomplete-result-popup" extends="chrome://global/content/bindings/autocomplete.xml#autocomplete-result-popup">
+    <implementation>
+      <method name="openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body>
+          <![CDATA[
+          // initially the panel is hidden
+          // to avoid impacting startup / new window performance
+          aInput.popup.hidden = false;
+
+          // this method is defined on the base binding
+          this._openAutocompletePopup(aInput, aElement);
+        ]]></body>
+      </method>
+
+      <method name="onPopupClick">
+        <parameter name="aEvent"/>
+        <body><![CDATA[
+          // Ignore all right-clicks
+          if (aEvent.button == 2)
+            return;
+
+          var controller = this.view.QueryInterface(Components.interfaces.nsIAutoCompleteController);
+
+          // Check for unmodified left-click, and use default behavior
+          if (aEvent.button == 0 && !aEvent.shiftKey && !aEvent.ctrlKey &&
+              !aEvent.altKey && !aEvent.metaKey) {
+            controller.handleEnter(true);
+            return;
+          }
+
+          // Check for middle-click or modified clicks on the search bar
+          var searchBar = BrowserSearch.searchBar;
+          if (searchBar && searchBar.textbox == this.mInput) {
+            // Handle search bar popup clicks
+            var search = controller.getValueAt(this.selectedIndex);
+
+            // close the autocomplete popup and revert the entered search term
+            this.closePopup();
+            controller.handleEscape();
+
+            // Fill in the search bar's value
+            searchBar.value = search;
+
+            // open the search results according to the clicking subtlety
+            var where = whereToOpenLink(aEvent, false, true);
+            searchBar.doSearch(search, where);
+          }
+          ]]></body>
+        </method>
+      </implementation>
+    </binding>
+
+    <binding id="urlbar-rich-result-popup" extends="chrome://browser/content/autocomplete.xml#private-autocomplete-rich-result-popup">
+      <implementation>
+      <field name="_maxResults">0</field>
+
+      <field name="_bundle" readonly="true">
+        Cc["@mozilla.org/intl/stringbundle;1"].
+          getService(Ci.nsIStringBundleService).
+          createBundle("chrome://browser/locale/places/places.properties");
+      </field>
+
+      <property name="maxResults" readonly="true">
+        <getter>
+          <![CDATA[
+            if (!this._maxResults) {
+              var prefService =
+                Components.classes["@mozilla.org/preferences-service;1"]
+                          .getService(Components.interfaces.nsIPrefBranch);
+              this._maxResults = prefService.getIntPref("browser.urlbar.maxRichResults");
+            }
+            return this._maxResults;
+          ]]>
+        </getter>
+      </property>
+
+      <method name="openAutocompletePopup">
+        <parameter name="aInput"/>
+        <parameter name="aElement"/>
+        <body>
+          <![CDATA[
+          // initially the panel is hidden
+          // to avoid impacting startup / new window performance
+          aInput.popup.hidden = false;
+
+          // this method is defined on the base binding
+          this._openAutocompletePopup(aInput, aElement);
+        ]]></body>
+      </method>
+
+      <method name="onPopupClick">
+        <parameter name="aEvent"/>
+        <body>
+          <![CDATA[
+          // Ignore right-clicks
+          if (aEvent.button == 2)
+            return;
+
+          var controller = this.view.QueryInterface(Components.interfaces.nsIAutoCompleteController);
+
+          // Check for unmodified left-click, and use default behavior
+          if (aEvent.button == 0 && !aEvent.shiftKey && !aEvent.ctrlKey &&
+              !aEvent.altKey && !aEvent.metaKey) {
+            controller.handleEnter(true);
+            return;
+          }
+
+          // Check for middle-click or modified clicks on the URL bar
+          if (gURLBar && this.mInput == gURLBar) {
+            var url = controller.getValueAt(this.selectedIndex);
+
+            // close the autocomplete popup and revert the entered address
+            this.closePopup();
+            controller.handleEscape();
+
+            // Check if this is meant to be an action
+            let action = this.mInput._parseActionUrl(url);
+            if (action) {
+              if (action.type == "switchtab")
+                url = action.param;
+              else
+                return;
+            }
+
+            // respect the usual clicking subtleties
+            openUILink(url, aEvent);
+          }
+        ]]>
+        </body>
+      </method>
+
+      <method name="createResultLabel">
+        <parameter name="aTitle"/>
+        <parameter name="aUrl"/>
+        <parameter name="aType"/>
+        <body>
+          <![CDATA[
+            var label = aTitle + " " + aUrl;
+            // convert aType (ex: "ac-result-type-<aType>") to text to be spoke aloud
+            // by screen readers.  convert "tag" and "bookmark" to the localized versions,
+            // but don't do anything for "favicon" (the default)
+            if (aType != "favicon") {
+              label += " " + this._bundle.GetStringFromName(aType + "ResultLabel");
+            }
+            return label;
+          ]]>
+        </body>
+      </method>
+
+    </implementation>
+  </binding>
+
+  <binding id="addon-progress-notification" extends="chrome://global/content/bindings/notification.xml#popup-notification">
+    <content align="start">
+      <xul:image class="popup-notification-icon"
+                 xbl:inherits="popupid,src=icon"/>
+      <xul:vbox flex="1">
+        <xul:description class="popup-notification-description addon-progress-description"
+                         xbl:inherits="xbl:text=label"/>
+        <xul:spacer flex="1"/>
+        <xul:hbox align="center">
+          <xul:progressmeter anonid="progressmeter" flex="1" mode="undetermined" class="popup-progress-meter"/>
+          <xul:button anonid="cancel" class="popup-progress-cancel" oncommand="document.getBindingParent(this).cancel()"/>
+        </xul:hbox>
+        <xul:label anonid="progresstext" class="popup-progress-label"/>
+        <xul:hbox class="popup-notification-button-container"
+                  pack="end" align="center">
+          <xul:button anonid="button"
+                      class="popup-notification-menubutton"
+                      type="menu-button"
+                      xbl:inherits="oncommand=buttoncommand,label=buttonlabel,accesskey=buttonaccesskey">
+            <xul:menupopup anonid="menupopup"
+                           xbl:inherits="oncommand=menucommand">
+              <children/>
+              <xul:menuitem class="menuitem-iconic popup-notification-closeitem close-icon"
+                            label="&closeNotificationItem.label;"
+                            xbl:inherits="oncommand=closeitemcommand"/>
+            </xul:menupopup>
+          </xul:button>
+        </xul:hbox>
+      </xul:vbox>
+      <xul:vbox pack="start">
+        <xul:toolbarbutton anonid="closebutton"
+                           class="messageCloseButton close-icon popup-notification-closebutton tabbable"
+                           xbl:inherits="oncommand=closebuttoncommand"
+                           tooltiptext="&closeNotification.tooltip;"/>
+      </xul:vbox>
+    </content>
+    <implementation>
+      <constructor><![CDATA[
+        this.cancelbtn.setAttribute("tooltiptext", gNavigatorBundle.getString("addonDownloadCancelTooltip"));
+
+        this.notification.options.installs.forEach(function(aInstall) {
+          aInstall.addListener(this);
+        }, this);
+
+        // Calling updateProgress can sometimes cause this notification to be
+        // removed in the middle of refreshing the notification panel which
+        // makes the panel get refreshed again. Just initialise to the
+        // undetermined state and then schedule a proper check at the next
+        // opportunity
+        this.setProgress(0, -1);
+        this._updateProgressTimeout = setTimeout(this.updateProgress.bind(this), 0);
+      ]]></constructor>
+
+      <destructor><![CDATA[
+        this.destroy();
+      ]]></destructor>
+
+      <field name="progressmeter" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "progressmeter");
+      </field>
+      <field name="progresstext" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "progresstext");
+      </field>
+      <field name="cancelbtn" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "cancel");
+      </field>
+      <field name="DownloadUtils" readonly="true">
+        {
+          let utils = {};
+          Components.utils.import("resource://gre/modules/DownloadUtils.jsm", utils);
+          utils.DownloadUtils;
+        }
+      </field>
+
+      <method name="destroy">
+        <body><![CDATA[
+          this.notification.options.installs.forEach(function(aInstall) {
+            aInstall.removeListener(this);
+          }, this);
+          clearTimeout(this._updateProgressTimeout);
+        ]]></body>
+      </method>
+
+      <method name="setProgress">
+        <parameter name="aProgress"/>
+        <parameter name="aMaxProgress"/>
+        <body><![CDATA[
+          if (aMaxProgress == -1) {
+            this.progressmeter.mode = "undetermined";
+          }
+          else {
+            this.progressmeter.mode = "determined";
+            this.progressmeter.value = (aProgress * 100) / aMaxProgress;
+          }
+
+          let now = Date.now();
+
+          if (!this.notification.lastUpdate) {
+            this.notification.lastUpdate = now;
+            this.notification.lastProgress = aProgress;
+            return;
+          }
+
+          let delta = now - this.notification.lastUpdate;
+          if ((delta < 400) && (aProgress < aMaxProgress))
+            return;
+
+          delta /= 1000;
+
+          // This code is taken from nsDownloadManager.cpp
+          let speed = (aProgress - this.notification.lastProgress) / delta;
+          if (this.notification.speed)
+            speed = speed * 0.9 + this.notification.speed * 0.1;
+
+          this.notification.lastUpdate = now;
+          this.notification.lastProgress = aProgress;
+          this.notification.speed = speed;
+
+          let status = null;
+          [status, this.notification.last] = this.DownloadUtils.getDownloadStatus(aProgress, aMaxProgress, speed, this.notification.last);
+          this.progresstext.value = status;
+        ]]></body>
+      </method>
+
+      <method name="cancel">
+        <body><![CDATA[
+          // Cache these as cancelling the installs will remove this
+          // notification which will drop these references
+          let browser = this.notification.browser;
+          let contentWindow = this.notification.options.contentWindow;
+          let sourceURI = this.notification.options.sourceURI;
+
+          let installs = this.notification.options.installs;
+          installs.forEach(function(aInstall) {
+            try {
+              aInstall.cancel();
+            }
+            catch (e) {
+              // Cancel will throw if the download has already failed
+            }
+          }, this);
+
+          let anchorID = "addons-notification-icon";
+          let notificationID = "addon-install-cancelled";
+          let messageString = gNavigatorBundle.getString("addonDownloadCancelled");
+          messageString = PluralForm.get(installs.length, messageString);
+          let buttonText = gNavigatorBundle.getString("addonDownloadRestart");
+          buttonText = PluralForm.get(installs.length, buttonText);
+
+          let action = {
+            label: buttonText,
+            accessKey: gNavigatorBundle.getString("addonDownloadRestart.accessKey"),
+            callback: function() {
+              let weblistener = Cc["@mozilla.org/addons/web-install-listener;1"].
+                                getService(Ci.amIWebInstallListener);
+              if (weblistener.onWebInstallRequested(contentWindow, sourceURI,
+                                                    installs, installs.length)) {
+                installs.forEach(function(aInstall) {
+                  aInstall.install();
+                });
+              }
+            }
+          };
+
+          PopupNotifications.show(browser, notificationID, messageString,
+                                  anchorID, action);
+        ]]></body>
+      </method>
+
+      <method name="updateProgress">
+        <body><![CDATA[
+          let downloadingCount = 0;
+          let progress = 0;
+          let maxProgress = 0;
+
+          this.notification.options.installs.forEach(function(aInstall) {
+            if (aInstall.maxProgress == -1)
+              maxProgress = -1;
+            progress += aInstall.progress;
+            if (maxProgress >= 0)
+              maxProgress += aInstall.maxProgress;
+            if (aInstall.state < AddonManager.STATE_DOWNLOADED)
+              downloadingCount++;
+          });
+
+          if (downloadingCount == 0) {
+            this.destroy();
+            PopupNotifications.remove(this.notification);
+          }
+          else {
+            this.setProgress(progress, maxProgress);
+          }
+        ]]></body>
+      </method>
+
+      <method name="onDownloadProgress">
+        <body><![CDATA[
+          this.updateProgress();
+        ]]></body>
+      </method>
+
+      <method name="onDownloadFailed">
+        <body><![CDATA[
+          this.updateProgress();
+        ]]></body>
+      </method>
+
+      <method name="onDownloadCancelled">
+        <body><![CDATA[
+          this.updateProgress();
+        ]]></body>
+      </method>
+
+      <method name="onDownloadEnded">
+        <body><![CDATA[
+          this.updateProgress();
+        ]]></body>
+      </method>
+    </implementation>
+  </binding>
+
+  <binding id="plugin-popupnotification-center-item">
+    <content align="center">
+      <xul:vbox pack="center" anonid="itemBox" class="itemBox">
+        <xul:description anonid="center-item-label" class="center-item-label" />
+        <xul:hbox flex="1" pack="start" align="center" anonid="center-item-warning">
+          <xul:image anonid="center-item-warning-icon" class="center-item-warning-icon"/>
+          <xul:label anonid="center-item-warning-label"/>
+          <xul:label anonid="center-item-link" value="&checkForUpdates;" class="text-link"/>
+        </xul:hbox>
+      </xul:vbox>
+      <xul:vbox pack="center">
+        <xul:menulist class="center-item-menulist"
+                      anonid="center-item-menulist">
+          <xul:menupopup>
+            <xul:menuitem anonid="allownow" value="allownow"
+                          label="&pluginActivateNow.label;" />
+            <xul:menuitem anonid="allowalways" value="allowalways"
+                          label="&pluginActivateAlways.label;" />
+            <xul:menuitem anonid="block" value="block"
+                          label="&pluginBlockNow.label;" />
+          </xul:menupopup>
+        </xul:menulist>
+      </xul:vbox>
+    </content>
+    <resources>
+      <stylesheet src="chrome://global/skin/notification.css"/>
+    </resources>
+    <implementation>
+      <constructor><![CDATA[
+        document.getAnonymousElementByAttribute(this, "anonid", "center-item-label").value = this.action.pluginName;
+
+        let curState = "block";
+        if (this.action.fallbackType == Ci.nsIObjectLoadingContent.PLUGIN_ACTIVE) {
+          if (this.action.pluginPermissionType == Ci.nsIPermissionManager.EXPIRE_SESSION) {
+            curState = "allownow";
+          }
+          else {
+            curState = "allowalways";
+          }
+        }
+        document.getAnonymousElementByAttribute(this, "anonid", "center-item-menulist").value = curState;
+
+        let warningString = "";
+        let linkString = "";
+
+        let link = document.getAnonymousElementByAttribute(this, "anonid", "center-item-link");
+
+        let url;
+        let linkHandler;
+
+        if (this.action.pluginTag.enabledState == Ci.nsIPluginTag.STATE_DISABLED) {
+          document.getAnonymousElementByAttribute(this, "anonid", "center-item-menulist").hidden = true;
+          warningString = gNavigatorBundle.getString("pluginActivateDisabled.label");
+          linkString = gNavigatorBundle.getString("pluginActivateDisabled.manage");
+          linkHandler = function(event) {
+            event.preventDefault();
+            gPluginHandler.managePlugins();
+          };
+          document.getAnonymousElementByAttribute(this, "anonid", "center-item-warning-icon").hidden = true;
+        }
+        else {
+          url = this.action.detailsLink;
+
+          switch (this.action.blocklistState) {
+          case Ci.nsIBlocklistService.STATE_NOT_BLOCKED:
+            document.getAnonymousElementByAttribute(this, "anonid", "center-item-warning").hidden = true;
+            break;
+          case Ci.nsIBlocklistService.STATE_BLOCKED:
+            document.getAnonymousElementByAttribute(this, "anonid", "center-item-menulist").hidden = true;
+            warningString = gNavigatorBundle.getString("pluginActivateBlocked.label");
+            linkString = gNavigatorBundle.getString("pluginActivate.learnMore");
+            break;
+          case Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE:
+            warningString = gNavigatorBundle.getString("pluginActivateOutdated.label");
+            linkString = gNavigatorBundle.getString("pluginActivate.updateLabel");
+            break;
+          case Ci.nsIBlocklistService.STATE_VULNERABLE_NO_UPDATE:
+            warningString = gNavigatorBundle.getString("pluginActivateVulnerable.label");
+            linkString = gNavigatorBundle.getString("pluginActivate.riskLabel");
+            break;
+          }
+        }
+        document.getAnonymousElementByAttribute(this, "anonid", "center-item-warning-label").value = warningString;
+
+        if (url || linkHandler) {
+          link.value = linkString;
+          if (url) {
+            link.href = url;
+          }
+          if (linkHandler) {
+            link.addEventListener("click", linkHandler, false);
+          }
+        }
+        else {
+          link.hidden = true;
+        }
+      ]]></constructor>
+      <property name="value">
+        <getter>
+          return document.getAnonymousElementByAttribute(this, "anonid",
+                   "center-item-menulist").value;
+        </getter>
+        <setter><!-- This should be used only in automated tests -->
+          document.getAnonymousElementByAttribute(this, "anonid",
+                    "center-item-menulist").value = val;
+        </setter>
+      </property>
+    </implementation>
+  </binding>
+
+  <binding id="click-to-play-plugins-notification" extends="chrome://global/content/bindings/notification.xml#popup-notification">
+    <content align="start" class="click-to-play-plugins-notification-content">
+      <xul:vbox flex="1" align="stretch" class="popup-notification-main-box"
+                xbl:inherits="popupid">
+        <xul:hbox class="click-to-play-plugins-notification-description-box" flex="1" align="start">
+          <xul:description class="click-to-play-plugins-outer-description" flex="1">
+            <html:span anonid="click-to-play-plugins-notification-description" />
+            <xul:label class="text-link click-to-play-plugins-notification-link" anonid="click-to-play-plugins-notification-link" />
+          </xul:description>
+          <xul:toolbarbutton anonid="closebutton"
+                             class="messageCloseButton close-icon popup-notification-closebutton tabbable"
+                             xbl:inherits="oncommand=closebuttoncommand"
+                             tooltiptext="&closeNotification.tooltip;"/>
+        </xul:hbox>
+        <xul:grid anonid="click-to-play-plugins-notification-center-box"
+                  class="click-to-play-plugins-notification-center-box">
+          <xul:columns>
+            <xul:column flex="1"/>
+            <xul:column/>
+          </xul:columns>
+          <xul:rows>
+            <children includes="row"/>
+            <xul:hbox pack="start" anonid="plugin-notification-showbox">
+              <xul:button label="&pluginNotification.showAll.label;"
+                          accesskey="&pluginNotification.showAll.accesskey;"
+                          class="plugin-notification-showbutton"
+                          oncommand="document.getBindingParent(this)._setState(2)"/>
+            </xul:hbox>
+          </xul:rows>
+        </xul:grid>
+        <xul:hbox anonid="button-container"
+                  class="click-to-play-plugins-notification-button-container"
+                  pack="center" align="center">
+          <xul:button anonid="primarybutton"
+                      class="click-to-play-popup-button primary-button"
+                      oncommand="document.getBindingParent(this)._onButton(this)"
+                      flex="1"/>
+          <xul:button anonid="secondarybutton"
+                      class="click-to-play-popup-button"
+                      oncommand="document.getBindingParent(this)._onButton(this);"
+                      flex="1"/>
+        </xul:hbox>
+        <xul:box hidden="true">
+          <children/>
+        </xul:box>
+      </xul:vbox>
+    </content>
+    <resources>
+      <stylesheet src="chrome://global/skin/notification.css"/>
+    </resources>
+    <implementation>
+      <field name="_states">
+        ({SINGLE: 0, MULTI_COLLAPSED: 1, MULTI_EXPANDED: 2})
+      </field>
+      <field name="_primaryButton">
+        document.getAnonymousElementByAttribute(this, "anonid", "primarybutton");
+      </field>
+      <field name="_secondaryButton">
+        document.getAnonymousElementByAttribute(this, "anonid", "secondarybutton")
+      </field>
+      <field name="_buttonContainer">
+        document.getAnonymousElementByAttribute(this, "anonid", "button-container")
+      </field>
+      <field name="_brandShortName">
+        document.getElementById("bundle_brand").getString("brandShortName")
+      </field>
+      <field name="_items">[]</field>
+      <constructor><![CDATA[
+        const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+        for (let action of this.notification.options.centerActions) {
+          let item = document.createElementNS(XUL_NS, "row");
+          item.setAttribute("class", "plugin-popupnotification-centeritem");
+          item.action = action;
+          this.appendChild(item);
+          this._items.push(item);
+        }
+        switch (this.notification.options.centerActions.length) {
+          case 0:
+            PopupNotifications._dismiss();
+            break;
+          case 1:
+            this._setState(this._states.SINGLE);
+            break;
+          default:
+            if (this.notification.options.primaryPlugin) {
+              this._setState(this._states.MULTI_COLLAPSED);
+            } else {
+              this._setState(this._states.MULTI_EXPANDED);
+            }
+        }
+      ]]></constructor>
+      <method name="_setState">
+        <parameter name="state" />
+        <body><![CDATA[
+          var grid = document.getAnonymousElementByAttribute(this, "anonid", "click-to-play-plugins-notification-center-box");
+
+          if (this._states.SINGLE == state) {
+            grid.hidden = true;
+            this._setupSingleState();
+            return;
+          }
+
+          let prePath = this.notification.browser.contentWindow.document.nodePrincipal.URI.prePath;
+          this._setupDescription("pluginActivateMultiple.message", null, prePath);
+
+          var showBox = document.getAnonymousElementByAttribute(this, "anonid", "plugin-notification-showbox");
+
+          var dialogStrings = Services.strings.createBundle("chrome://global/locale/dialog.properties");
+          this._primaryButton.label = dialogStrings.GetStringFromName("button-accept");
+          this._primaryButton.setAttribute("default", "true");
+
+          this._secondaryButton.label = dialogStrings.GetStringFromName("button-cancel");
+          this._primaryButton.setAttribute("action", "_multiAccept");
+          this._secondaryButton.setAttribute("action", "_cancel");
+
+          grid.hidden = false;
+
+          if (this._states.MULTI_COLLAPSED == state) {
+            for (let child of this.childNodes) {
+              if (child.tagName != "row") {
+                continue;
+              }
+              child.hidden = this.notification.options.primaryPlugin !=
+                             child.action.permissionString;
+            }
+            showBox.hidden = false;
+          }
+          else {
+            for (let child of this.childNodes) {
+              if (child.tagName != "row") {
+                continue;
+              }
+              child.hidden = false;
+            }
+            showBox.hidden = true;
+          }
+          this._setupLink(null);
+        ]]></body>
+      </method>
+      <method name="_setupSingleState">
+        <body><![CDATA[
+          var action = this.notification.options.centerActions[0];
+          var prePath = action.pluginPermissionPrePath;
+
+          let label, linkLabel, linkUrl, button1, button2;
+
+          if (action.fallbackType == Ci.nsIObjectLoadingContent.PLUGIN_ACTIVE) {
+            button1 = {
+              label: "pluginBlockNow.label",
+              accesskey: "pluginBlockNow.accesskey",
+              action: "_singleBlock"
+            };
+            button2 = {
+              label: "pluginContinue.label",
+              accesskey: "pluginContinue.accesskey",
+              action: "_singleContinue",
+              default: true
+            };
+            switch (action.blocklistState) {
+            case Ci.nsIBlocklistService.STATE_NOT_BLOCKED:
+              label = "pluginEnabled.message";
+              linkLabel = "pluginActivate.learnMore";
+              break;
+
+            case Ci.nsIBlocklistService.STATE_BLOCKED:
+              Cu.reportError(Error("Cannot happen!"));
+              break;
+
+            case Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE:
+              label = "pluginEnabledOutdated.message";
+              linkLabel = "pluginActivate.updateLabel";
+              break;
+
+            case Ci.nsIBlocklistService.STATE_VULNERABLE_NO_UPDATE:
+              label = "pluginEnabledVulnerable.message";
+              linkLabel = "pluginActivate.riskLabel"
+              break;
+
+            default:
+              Cu.reportError(Error("Unexpected blocklist state"));
+            }
+          }
+          else if (action.pluginTag.enabledState == Ci.nsIPluginTag.STATE_DISABLED) {
+            let linkElement =
+              document.getAnonymousElementByAttribute(
+                         this, "anonid", "click-to-play-plugins-notification-link");
+            linkElement.textContent = gNavigatorBundle.getString("pluginActivateDisabled.manage");
+            linkElement.setAttribute("onclick", "gPluginHandler.managePlugins()");
+
+            let descElement = document.getAnonymousElementByAttribute(this, "anonid", "click-to-play-plugins-notification-description");
+            descElement.textContent = gNavigatorBundle.getFormattedString(
+              "pluginActivateDisabled.message", [action.pluginName, this._brandShortName]) + " ";
+            this._buttonContainer.hidden = true;
+            return;
+          }
+          else if (action.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED) {
+            let descElement = document.getAnonymousElementByAttribute(this, "anonid", "click-to-play-plugins-notification-description");
+            descElement.textContent = gNavigatorBundle.getFormattedString(
+              "pluginActivateBlocked.message", [action.pluginName, this._brandShortName]) + " ";
+            this._setupLink("pluginActivate.learnMore", action.detailsLink);
+            this._buttonContainer.hidden = true;
+            return;
+          }
+          else {
+            button1 = {
+              label: "pluginActivateNow.label",
+              accesskey: "pluginActivateNow.accesskey",
+              action: "_singleActivateNow"
+            };
+            button2 = {
+              label: "pluginActivateAlways.label",
+              accesskey: "pluginActivateAlways.accesskey",
+              action: "_singleActivateAlways"
+            };
+            switch (action.blocklistState) {
+            case Ci.nsIBlocklistService.STATE_NOT_BLOCKED:
+              label = "pluginActivateNew.message";
+              linkLabel = "pluginActivate.learnMore";
+              button2.default = true;
+              break;
+
+            case Ci.nsIBlocklistService.STATE_VULNERABLE_UPDATE_AVAILABLE:
+              label = "pluginActivateOutdated.message";
+              linkLabel = "pluginActivate.updateLabel";
+              button1.default = true;
+              break;
+
+            case Ci.nsIBlocklistService.STATE_VULNERABLE_NO_UPDATE:
+              label = "pluginActivateVulnerable.message";
+              linkLabel = "pluginActivate.riskLabel"
+              button1.default = true;
+              break;
+
+            default:
+              Cu.reportError(Error("Unexpected blocklist state"));
+            }
+          }
+          this._setupDescription(label, action.pluginName, prePath);
+          this._setupLink(linkLabel, action.detailsLink);
+
+          this._primaryButton.label = gNavigatorBundle.getString(button1.label);
+          this._primaryButton.accesskey = gNavigatorBundle.getString(button1.accesskey);
+          this._primaryButton.setAttribute("action", button1.action);
+
+          this._secondaryButton.label = gNavigatorBundle.getString(button2.label);
+          this._secondaryButton.accesskey = gNavigatorBundle.getString(button2.accesskey);
+          this._secondaryButton.setAttribute("action", button2.action);
+          if (button1.default) {
+            this._primaryButton.setAttribute("default", "true");
+          }
+          else if (button2.default) {
+            this._secondaryButton.setAttribute("default", "true");
+          }
+        ]]></body>
+      </method>
+      <method name="_setupDescription">
+        <parameter name="baseString" />
+        <parameter name="pluginName" /> <!-- null for the multiple-plugin case -->
+        <parameter name="prePath" />
+        <body><![CDATA[
+          var bsn = this._brandShortName;
+          var span = document.getAnonymousElementByAttribute(this, "anonid", "click-to-play-plugins-notification-description");
+          while (span.lastChild) {
+            span.removeChild(span.lastChild);
+          }
+
+          var args = ["__prepath__", this._brandShortName];
+          if (pluginName) {
+            args.unshift(pluginName);
+          }
+          var bases = gNavigatorBundle.getFormattedString(baseString, args).
+            split("__prepath__", 2);
+
+          span.appendChild(document.createTextNode(bases[0]));
+          var prePathSpan = document.createElementNS("http://www.w3.org/1999/xhtml", "em");
+          prePathSpan.appendChild(document.createTextNode(prePath));
+          span.appendChild(prePathSpan);
+          span.appendChild(document.createTextNode(bases[1] + " "));
+        ]]></body>
+      </method>
+      <method name="_setupLink">
+        <parameter name="linkString"/>
+        <parameter name="linkUrl" />
+        <body><![CDATA[
+          var link = document.getAnonymousElementByAttribute(this, "anonid", "click-to-play-plugins-notification-link");
+          if (!linkString || !linkUrl) {
+            link.hidden = true;
+            return;
+          }
+
+          link.hidden = false;
+          link.textContent = gNavigatorBundle.getString(linkString);
+          link.href = linkUrl;
+        ]]></body>
+      </method>
+      <method name="_onButton">
+        <parameter name="aButton" />
+        <body><![CDATA[
+          let methodName = aButton.getAttribute("action");
+          this[methodName]();
+        ]]></body>
+      </method>
+      <method name="_singleActivateNow">
+        <body><![CDATA[
+          gPluginHandler._updatePluginPermission(this.notification,
+            this.notification.options.centerActions[0],
+            "allownow");
+          this._cancel();
+        ]]></body>
+      </method>
+      <method name="_singleBlock">
+        <body><![CDATA[
+          gPluginHandler._updatePluginPermission(this.notification,
+            this.notification.options.centerActions[0],
+            "block");
+            this._cancel();
+        ]]></body>
+      </method>
+      <method name="_singleActivateAlways">
+        <body><![CDATA[
+          gPluginHandler._updatePluginPermission(this.notification,
+            this.notification.options.centerActions[0],
+            "allowalways");
+          this._cancel();
+        ]]></body>
+      </method>
+      <method name="_singleContinue">
+        <body><![CDATA[
+          gPluginHandler._updatePluginPermission(this.notification,
+            this.notification.options.centerActions[0],
+            "continue");
+          this._cancel();
+        ]]></body>
+      </method>
+      <method name="_multiAccept">
+        <body><![CDATA[
+          for (let item of this._items) {
+            let action = item.action;
+            if (action.pluginTag.enabledState == Ci.nsIPluginTag.STATE_DISABLED ||
+                action.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED) {
+              continue;
+            }
+            gPluginHandler._updatePluginPermission(this.notification,
+              item.action, item.value);
+          }
+          this._cancel();
+        ]]></body>
+      </method>
+      <method name="_cancel">
+        <body><![CDATA[
+          PopupNotifications._dismiss();
+        ]]></body>
+      </method>
+      <method name="_accept">
+        <parameter name="aEvent" />
+        <body><![CDATA[
+          if (aEvent.defaultPrevented)
+            return;
+          aEvent.preventDefault();
+          if (this._primaryButton.getAttribute("default") == "true") {
+            this._primaryButton.click();
+          }
+          else if (this._secondaryButton.getAttribute("default") == "true") {
+            this._secondaryButton.click();
+          }
+        ]]></body>
+      </method>
+    </implementation>
+    <handlers>
+      <!-- The _accept method checks for .defaultPrevented so that if focus is in a button,
+           enter activates the button and not this default action -->
+      <handler event="keypress" keycode="VK_ENTER" group="system" action="this._accept(event);"/>
+      <handler event="keypress" keycode="VK_RETURN" group="system" action="this._accept(event);"/>
+    </handlers>
+  </binding>
+
+  <binding id="splitmenu">
+    <content>
+      <xul:hbox anonid="menuitem" flex="1"
+                class="splitmenu-menuitem"
+                xbl:inherits="iconic,label,disabled,onclick=oncommand,_moz-menuactive=active"/>
+      <xul:menu anonid="menu" class="splitmenu-menu"
+                xbl:inherits="disabled,_moz-menuactive=active"
+                oncommand="event.stopPropagation();">
+        <children includes="menupopup"/>
+      </xul:menu>
+    </content>
+
+    <implementation implements="nsIDOMEventListener">
+      <constructor><![CDATA[
+        this._parentMenupopup.addEventListener("DOMMenuItemActive", this, false);
+        this._parentMenupopup.addEventListener("popuphidden", this, false);
+      ]]></constructor>
+
+      <destructor><![CDATA[
+        this._parentMenupopup.removeEventListener("DOMMenuItemActive", this, false);
+        this._parentMenupopup.removeEventListener("popuphidden", this, false);
+      ]]></destructor>
+
+      <field name="menuitem" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "menuitem");
+      </field>
+      <field name="menu" readonly="true">
+        document.getAnonymousElementByAttribute(this, "anonid", "menu");
+      </field>
+
+      <field name="_menuDelay">600</field>
+
+      <field name="_parentMenupopup"><![CDATA[
+        this._getParentMenupopup(this);
+      ]]></field>
+
+      <method name="_getParentMenupopup">
+        <parameter name="aNode"/>
+        <body><![CDATA[
+          let node = aNode.parentNode;
+          while (node) {
+            if (node.localName == "menupopup")
+              break;
+            node = node.parentNode;
+          }
+          return node;
+        ]]></body>
+      </method>
+
+      <method name="handleEvent">
+        <parameter name="event"/>
+        <body><![CDATA[
+          switch (event.type) {
+            case "DOMMenuItemActive":
+              if (this.getAttribute("active") == "true" &&
+                  event.target != this &&
+                  this._getParentMenupopup(event.target) == this._parentMenupopup)
+                this.removeAttribute("active");
+              break;
+            case "popuphidden":
+              if (event.target == this._parentMenupopup)
+                this.removeAttribute("active");
+              break;
+          }
+        ]]></body>
+      </method>
+    </implementation>
+
+    <handlers>
+      <handler event="mouseover"><![CDATA[
+        if (this.getAttribute("active") != "true") {
+          this.setAttribute("active", "true");
+
+          let event = document.createEvent("Events");
+          event.initEvent("DOMMenuItemActive", true, false);
+          this.dispatchEvent(event);
+
+          if (this.getAttribute("disabled") != "true") {
+            let self = this;
+            setTimeout(function () {
+              if (self.getAttribute("active") == "true")
+                self.menu.open = true;
+            }, this._menuDelay);
+          }
+        }
+      ]]></handler>
+
+      <handler event="popupshowing"><![CDATA[
+        if (event.target == this.firstChild &&
+            this._parentMenupopup._currentPopup)
+          this._parentMenupopup._currentPopup.hidePopup();
+      ]]></handler>
+
+      <handler event="click" phase="capturing"><![CDATA[
+        if (this.getAttribute("disabled") == "true") {
+          // Prevent the command from being carried out
+          event.stopPropagation();
+          return;
+        }
+
+        let node = event.originalTarget;
+        while (true) {
+          if (node == this.menuitem)
+            break;
+          if (node == this)
+            return;
+          node = node.parentNode;
+        }
+
+        this._parentMenupopup.hidePopup();
+      ]]></handler>
+    </handlers>
+  </binding>
+
+  <binding id="menuitem-tooltip" extends="chrome://global/content/bindings/menu.xml#menuitem">
+    <implementation>
+      <constructor><![CDATA[
+        this.setAttribute("tooltiptext", this.getAttribute("acceltext"));
+        // TODO: Simplify this to this.setAttribute("acceltext", "") once bug
+        // 592424 is fixed
+        document.getAnonymousElementByAttribute(this, "anonid", "accel").firstChild.setAttribute("value", "");
+      ]]></constructor>
+    </implementation>
+  </binding>
+
+  <binding id="menuitem-iconic-tooltip" extends="chrome://global/content/bindings/menu.xml#menuitem-iconic">
+    <implementation>
+      <constructor><![CDATA[
+        this.setAttribute("tooltiptext", this.getAttribute("acceltext"));
+        // TODO: Simplify this to this.setAttribute("acceltext", "") once bug
+        // 592424 is fixed
+        document.getAnonymousElementByAttribute(this, "anonid", "accel").firstChild.setAttribute("value", "");
+      ]]></constructor>
+    </implementation>
+  </binding>
+
+  <binding id="toolbarbutton-badged" display="xul:button"
+           extends="chrome://global/content/bindings/toolbarbutton.xml#toolbarbutton">
+    <content>
+      <children includes="observes|template|menupopup|panel|tooltip"/>
+      <xul:stack class="toolbarbutton-badge-stack">
+        <xul:image class="toolbarbutton-icon" xbl:inherits="validate,src=image,label"/>
+        <xul:label class="toolbarbutton-badge" xbl:inherits="value=badge" top="0" end="0"/>
+      </xul:stack>
+      <xul:label class="toolbarbutton-text" crop="right" flex="1"
+                 xbl:inherits="value=label,accesskey,crop"/>
+    </content>
+  </binding>
+
+</bindings>
diff --git a/webbrowser/base/content/utilityOverlay.js b/webbrowser/base/content/utilityOverlay.js
new file mode 100644
index 0000000..1d284ba
--- /dev/null
+++ b/webbrowser/base/content/utilityOverlay.js
@@ -0,0 +1,901 @@
+# -*- Mode: javascript; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Services = object with smart getters for common XPCOM services
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
+Components.utils.import("resource:///modules/RecentWindow.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "ShellService",
+                                  "resource:///modules/ShellService.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "Deprecated",
+                                  "resource://gre/modules/Deprecated.jsm");
+
+XPCOMUtils.defineLazyGetter(this, "BROWSER_NEW_TAB_URL", function () {
+  const PREF = "browser.newtab.url";
+
+  function getNewTabPageURL() {
+    if (!Services.prefs.prefHasUserValue(PREF)) {
+      if (PrivateBrowsingUtils.isWindowPrivate(window) &&
+          !PrivateBrowsingUtils.permanentPrivateBrowsing)
+        return "about:privatebrowsing";
+    }
+    return Services.prefs.getCharPref(PREF) || "about:blank";
+  }
+
+  function update() {
+    BROWSER_NEW_TAB_URL = getNewTabPageURL();
+  }
+
+  Services.prefs.addObserver(PREF, update, false);
+
+  addEventListener("unload", function onUnload() {
+    removeEventListener("unload", onUnload);
+    Services.prefs.removeObserver(PREF, update);
+  });
+
+  return getNewTabPageURL();
+});
+
+var TAB_DROP_TYPE = "application/x-moz-tabbrowser-tab";
+
+var gBidiUI = false;
+
+/**
+ * Determines whether the given url is considered a special URL for new tabs.
+ */
+function isBlankPageURL(aURL) {
+  // Pale Moon: Only make "about:blank", the logopage, or "about:newtab" be 
+  // a "blank page" to fix focus issues. 
+  // Original code: return aURL == "about:blank" || aURL == BROWSER_NEW_TAB_URL;
+  return aURL == "about:blank" || aURL == "about:newtab" || aURL == "about:logopage";
+}
+
+function getBrowserURL()
+{
+  return "chrome://browser/content/browser.xul";
+}
+
+function getBoolPref(pref, defaultValue) {
+  Deprecated.warning("getBoolPref is deprecated and will be removed in a future release. " +
+                     "You should use Services.pref.getBoolPref (Services.jsm).",
+                     "https://github.com/MoonchildProductions/UXP/issues/989");
+  return Services.prefs.getBoolPref(pref, defaultValue);
+}
+
+
+function getTopWin(skipPopups) {
+  // If this is called in a browser window, use that window regardless of
+  // whether it's the frontmost window, since commands can be executed in
+  // background windows (bug 626148).
+  if (top.document.documentElement.getAttribute("windowtype") == "navigator:browser" &&
+      (!skipPopups || top.toolbar.visible))
+    return top;
+
+  let isPrivate = PrivateBrowsingUtils.isWindowPrivate(window);
+  return RecentWindow.getMostRecentBrowserWindow({private: isPrivate,
+                                                  allowPopups: !skipPopups});
+}
+
+function openTopWin(url) {
+  /* deprecated */
+  openUILinkIn(url, "current");
+}
+
+/* openUILink handles clicks on UI elements that cause URLs to load.
+ *
+ * As the third argument, you may pass an object with the same properties as
+ * accepted by openUILinkIn, plus "ignoreButton" and "ignoreAlt".
+ */
+function openUILink(url, event, aIgnoreButton, aIgnoreAlt, aAllowThirdPartyFixup,
+                    aPostData, aReferrerURI) {
+  let params;
+
+  if (aIgnoreButton && typeof aIgnoreButton == "object") {
+    params = aIgnoreButton;
+
+    // don't forward "ignoreButton" and "ignoreAlt" to openUILinkIn
+    aIgnoreButton = params.ignoreButton;
+    aIgnoreAlt = params.ignoreAlt;
+    delete params.ignoreButton;
+    delete params.ignoreAlt;
+  } else {
+    params = {
+      allowThirdPartyFixup: aAllowThirdPartyFixup,
+      postData: aPostData,
+      referrerURI: aReferrerURI,
+      referrerPolicy: Components.interfaces.nsIHttpChannel.REFERRER_POLICY_DEFAULT,
+      initiatingDoc: event ? event.target.ownerDocument : null,
+    };
+  }
+
+  let where = whereToOpenLink(event, aIgnoreButton, aIgnoreAlt);
+  openUILinkIn(url, where, params);
+}
+
+
+/* whereToOpenLink() looks at an event to decide where to open a link.
+ *
+ * The event may be a mouse event (click, double-click, middle-click) or keypress event (enter).
+ *
+ * On Windows, the modifiers are:
+ * Ctrl        new tab, selected
+ * Shift       new window
+ * Ctrl+Shift  new tab, in background
+ * Alt         save
+ *
+ * Middle-clicking is the same as Ctrl+clicking (it opens a new tab).
+ *
+ * Exceptions: 
+ * - Alt is ignored for menu items selected using the keyboard so you don't accidentally save stuff.  
+ *    (Currently, the Alt isn't sent here at all for menu items, but that will change in bug 126189.)
+ * - Alt is hard to use in context menus, because pressing Alt closes the menu.
+ * - Alt can't be used on the bookmarks toolbar because Alt is used for "treat this as something draggable".
+ * - The button is ignored for the middle-click-paste-URL feature, since it's always a middle-click.
+ */
+function whereToOpenLink( e, ignoreButton, ignoreAlt )
+{
+  // This method must treat a null event like a left click without modifier keys (i.e.
+  // e = { shiftKey:false, ctrlKey:false, metaKey:false, altKey:false, button:0 })
+  // for compatibility purposes.
+  if (!e)
+    return "current";
+
+  var shift = e.shiftKey;
+  var ctrl =  e.ctrlKey;
+  var meta =  e.metaKey;
+  var alt  =  e.altKey && !ignoreAlt;
+
+  // ignoreButton allows "middle-click paste" to use function without always opening in a new window.
+  var middle = !ignoreButton && e.button == 1;
+  var middleUsesTabs = Services.prefs.getBoolPref("browser.tabs.opentabfor.middleclick", true);
+
+  // Don't do anything special with right-mouse clicks.  They're probably clicks on context menu items.
+
+#ifdef XP_MACOSX
+  if (meta || (middle && middleUsesTabs))
+#else
+  if (ctrl || (middle && middleUsesTabs))
+#endif
+    return shift ? "tabshifted" : "tab";
+
+  if (alt && Services.prefs.getBoolPref("browser.altClickSave", false))
+    return "save";
+
+  if (shift || (middle && !middleUsesTabs))
+    return "window";
+
+  return "current";
+}
+
+/* openUILinkIn opens a URL in a place specified by the parameter |where|.
+ *
+ * |where| can be:
+ *  "current"     current tab            (if there aren't any browser windows, then in a new window instead)
+ *  "tab"         new tab                (if there aren't any browser windows, then in a new window instead)
+ *  "tabshifted"  same as "tab" but in background if default is to select new tabs, and vice versa
+ *  "window"      new window
+ *  "save"        save to disk (with no filename hint!)
+ *
+ * aAllowThirdPartyFixup controls whether third party services such as Google's
+ * I Feel Lucky are allowed to interpret this URL. This parameter may be
+ * undefined, which is treated as false.
+ *
+ * Instead of aAllowThirdPartyFixup, you may also pass an object with any of
+ * these properties:
+ *   allowThirdPartyFixup (boolean)
+ *   postData             (nsIInputStream)
+ *   referrerURI          (nsIURI)
+ *   relatedToCurrent     (boolean)
+ */
+function openUILinkIn(url, where, aAllowThirdPartyFixup, aPostData, aReferrerURI) {
+  var params;
+
+  if (arguments.length == 3 && typeof arguments[2] == "object") {
+    params = aAllowThirdPartyFixup;
+  } else {
+    params = {
+      allowThirdPartyFixup: aAllowThirdPartyFixup,
+      postData: aPostData,
+      referrerURI: aReferrerURI,
+      referrerPolicy: Components.interfaces.nsIHttpChannel.REFERRER_POLICY_DEFAULT,
+    };
+  }
+
+  params.fromChrome = true;
+
+  openLinkIn(url, where, params);
+}
+
+/* eslint-disable complexity */
+function openLinkIn(url, where, params) {
+  if (!where || !url)
+    return;
+  const Cc = Components.classes;
+  const Ci = Components.interfaces;
+
+  var aFromChrome           = params.fromChrome;
+  var aAllowThirdPartyFixup = params.allowThirdPartyFixup;
+  var aPostData             = params.postData;
+  var aCharset              = params.charset;
+  var aReferrerURI          = params.referrerURI;
+  var aReferrerPolicy       = ('referrerPolicy' in params ?
+      params.referrerPolicy : Ci.nsIHttpChannel.REFERRER_POLICY_DEFAULT);
+  var aRelatedToCurrent     = params.relatedToCurrent;
+  var aForceAllowDataURI    = params.forceAllowDataURI;
+  var aInBackground         = params.inBackground;
+  var aDisallowInheritPrincipal = params.disallowInheritPrincipal;
+  var aInitiatingDoc        = params.initiatingDoc;
+  var aIsPrivate            = params.private;
+  var aPrincipal            = params.originPrincipal;
+  var aTriggeringPrincipal  = params.triggeringPrincipal;
+  var aForceAboutBlankViewerInCurrent =
+      params.forceAboutBlankViewerInCurrent;
+  var sendReferrerURI       = true;
+
+  if (where == "save") {
+    if (!aInitiatingDoc) {
+      Components.utils.reportError("openUILink/openLinkIn was called with " +
+        "where == 'save' but without initiatingDoc.  See bug 814264.");
+      return;
+    }
+    // TODO(1073187): propagate referrerPolicy.
+    saveURL(url, null, null, true, null, aReferrerURI, aInitiatingDoc);
+    return;
+  }
+
+  var w = getTopWin();
+  if ((where == "tab" || where == "tabshifted") &&
+      w && !w.toolbar.visible) {
+    w = getTopWin(true);
+    aRelatedToCurrent = false;
+  }
+
+  // We can only do this after we're sure of what |w| will be the rest of this function.
+  // Note that if |w| is null we might have no current browser (we'll open a new window).
+  var aCurrentBrowser = params.currentBrowser || (w && w.gBrowser.selectedBrowser);
+  
+  // Teach the principal about the right OA to use, e.g. in case when
+  // opening a link in a new private window.
+  // Please note we do not have to do that for SystemPrincipals and we
+  // can not do it for NullPrincipals since NullPrincipals are only
+  // identical if they actually are the same object (See Bug: 1346759)
+  function useOAForPrincipal(principal) {
+    if (principal && principal.isCodebasePrincipal) {
+      let attrs = {
+        privateBrowsingId: aIsPrivate || (w && PrivateBrowsingUtils.isWindowPrivate(w)),
+      };
+      return Services.scriptSecurityManager.createCodebasePrincipal(principal.URI, attrs);
+    }
+    return principal;
+  }
+  aPrincipal = useOAForPrincipal(aPrincipal);
+  aTriggeringPrincipal = useOAForPrincipal(aTriggeringPrincipal);
+
+  if (!w || where == "window") {
+    // This propagates to window.arguments.
+    // Strip referrer data when opening a new private window, to prevent
+    // regular browsing data from leaking into it.
+    if (aIsPrivate) {
+      sendReferrerURI = false;
+    }
+    
+    var sa = Cc["@mozilla.org/supports-array;1"].
+             createInstance(Ci.nsISupportsArray);
+
+    var wuri = Cc["@mozilla.org/supports-string;1"].
+               createInstance(Ci.nsISupportsString);
+    wuri.data = url;
+
+    let charset = null;
+    if (aCharset) {
+      charset = Cc["@mozilla.org/supports-string;1"]
+                  .createInstance(Ci.nsISupportsString);
+      charset.data = "charset=" + aCharset;
+    }
+
+    var allowThirdPartyFixupSupports = Cc["@mozilla.org/supports-PRBool;1"].
+                                       createInstance(Ci.nsISupportsPRBool);
+    allowThirdPartyFixupSupports.data = aAllowThirdPartyFixup;
+
+    var referrerURISupports = null;
+    if (aReferrerURI && sendReferrerURI) {
+      referrerURISupports = Cc["@mozilla.org/supports-string;1"].
+                            createInstance(Ci.nsISupportsString);
+      referrerURISupports.data = aReferrerURI.spec;
+    }
+
+    var referrerPolicySupports = Cc["@mozilla.org/supports-PRUint32;1"].
+                                 createInstance(Ci.nsISupportsPRUint32);
+    referrerPolicySupports.data = aReferrerPolicy;
+
+    sa.AppendElement(wuri);
+    sa.AppendElement(charset);
+    sa.AppendElement(referrerURISupports);
+    sa.AppendElement(aPostData);
+    sa.AppendElement(allowThirdPartyFixupSupports);
+    sa.AppendElement(referrerPolicySupports);
+    sa.AppendElement(aPrincipal);
+    sa.AppendElement(aTriggeringPrincipal);
+
+    let features = "chrome,dialog=no,all";
+    if (aIsPrivate) {
+      features += ",private";
+    }
+
+    Services.ww.openWindow(w || window, getBrowserURL(), null, features, sa);
+    return;
+  }
+
+  let loadInBackground = where == "current" ? false : aInBackground;
+  if (loadInBackground == null) {
+    loadInBackground = aFromChrome ?
+                         false :
+                         Services.prefs.getBoolPref("browser.tabs.loadInBackground");
+  }
+
+  let uriObj;
+  if (where == "current") {
+    try {
+      uriObj = Services.io.newURI(url, null, null);
+    } catch (e) {}
+  }
+
+  if (where == "current" && w.gBrowser.selectedTab.pinned) {
+    try {
+      // nsIURI.host can throw for non-nsStandardURL nsIURIs.
+      if (!uriObj || !uriObj.schemeIs("javascript") &&
+          w.gBrowser.currentURI.host != uriObj.host) {
+        where = "tab";
+        loadInBackground = false;
+      }
+    } catch (err) {
+      where = "tab";
+      loadInBackground = false;
+    }
+  }
+
+  // Raise the target window before loading the URI, since loading it may
+  // result in a new frontmost window (e.g. "javascript:window.open('');").
+  w.focus();
+
+  let browserUsedForLoad = null;
+  switch (where) {
+  case "current":
+    let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+    if (aAllowThirdPartyFixup) {
+      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP;
+      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
+    }
+    if (aDisallowInheritPrincipal)
+      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
+    if (aForceAllowDataURI) {
+      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FORCE_ALLOW_DATA_URI;
+    }
+    let {URI_INHERITS_SECURITY_CONTEXT} = Ci.nsIProtocolHandler;
+    if (aForceAboutBlankViewerInCurrent &&
+        (!uriObj ||
+         (Services.io.getProtocolFlags(uriObj.scheme) & URI_INHERITS_SECURITY_CONTEXT))) {
+      // Unless we know for sure we're not inheriting principals,
+      // force the about:blank viewer to have the right principal:
+      w.gBrowser.selectedBrowser.createAboutBlankContentViewer(aPrincipal);
+    }
+
+    w.gBrowser.loadURIWithFlags(url, {
+                                flags: flags,
+                                triggeringPrincipal: aTriggeringPrincipal,
+                                referrerURI: aReferrerURI,
+                                referrerPolicy: aReferrerPolicy,
+                                postData: aPostData,
+                                originPrincipal: aPrincipal,
+                                }); 
+    browserUsedForLoad = aCurrentBrowser;
+    break;
+  case "tabshifted":
+    loadInBackground = !loadInBackground;
+    // fall through
+  case "tab":
+    let browser = w.gBrowser;
+    let tabUsedForLoad = browser.loadOneTab(url, {
+                           referrerURI: aReferrerURI,
+                           referrerPolicy: aReferrerPolicy,
+                           charset: aCharset,
+                           postData: aPostData,
+                           inBackground: loadInBackground,
+                           allowThirdPartyFixup: aAllowThirdPartyFixup,
+                           relatedToCurrent: aRelatedToCurrent,
+                           originPrincipal: aPrincipal,
+                           triggeringPrincipal: aTriggeringPrincipal });
+    browserUsedForLoad = tabUsedForLoad.linkedBrowser;
+    break;
+  }
+
+  // Focus the content, but only if the browser used for the load is selected.
+  if (browserUsedForLoad &&
+      browserUsedForLoad == browserUsedForLoad.getTabBrowser().selectedBrowser) {
+    browserUsedForLoad.focus();
+  }
+
+  if (!loadInBackground && w.isBlankPageURL(url))
+    if (!w.focusAndSelectUrlBar()) {
+      console.error("Unable to focus and select address bar.")
+    }
+}
+
+// Used as an onclick handler for UI elements with link-like behavior.
+// e.g. onclick="checkForMiddleClick(this, event);"
+function checkForMiddleClick(node, event) {
+  // We should be using the disabled property here instead of the attribute,
+  // but some elements that this function is used with don't support it (e.g.
+  // menuitem).
+  if (node.getAttribute("disabled") == "true")
+    return; // Do nothing
+
+  if (event.button == 1) {
+    /* Execute the node's oncommand or command.
+     *
+     * XXX: we should use node.oncommand(event) once bug 246720 is fixed.
+     */
+    var target = node.hasAttribute("oncommand") ? node :
+                 node.ownerDocument.getElementById(node.getAttribute("command"));
+    var fn = new Function("event", target.getAttribute("oncommand"));
+    fn.call(target, event);
+
+    // If the middle-click was on part of a menu, close the menu.
+    // (Menus close automatically with left-click but not with middle-click.)
+    closeMenus(event.target);
+  }
+}
+
+// Closes all popups that are ancestors of the node.
+function closeMenus(node)
+{
+  if ("tagName" in node) {
+    if (node.namespaceURI == "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+    && (node.tagName == "menupopup" || node.tagName == "popup"))
+      node.hidePopup();
+
+    closeMenus(node.parentNode);
+  }
+}
+
+// Gather all descendent text under given document node.
+function gatherTextUnder ( root ) 
+{
+  var text = "";
+  var node = root.firstChild;
+  var depth = 1;
+  while ( node && depth > 0 ) {
+    // See if this node is text.
+    if ( node.nodeType == Node.TEXT_NODE ) {
+      // Add this text to our collection.
+      text += " " + node.data;
+    } else if ( node instanceof HTMLImageElement) {
+      // If it has an alt= attribute, use that.
+      var altText = node.getAttribute( "alt" );
+      if ( altText && altText != "" ) {
+        text = altText;
+        break;
+      }
+    }
+    // Find next node to test.
+    // First, see if this node has children.
+    if ( node.hasChildNodes() ) {
+      // Go to first child.
+      node = node.firstChild;
+      depth++;
+    } else {
+      // No children, try next sibling (or parent next sibling).
+      while ( depth > 0 && !node.nextSibling ) {
+        node = node.parentNode;
+        depth--;
+      }
+      if ( node.nextSibling ) {
+        node = node.nextSibling;
+      }
+    }
+  }
+  // Strip leading whitespace.
+  text = text.replace( /^\s+/, "" );
+  // Strip trailing whitespace.
+  text = text.replace( /\s+$/, "" );
+  // Compress remaining whitespace.
+  text = text.replace( /\s+/g, " " );
+  return text;
+}
+
+// This function exists for legacy reasons.
+function getShellService()
+{
+  return ShellService;
+}
+
+function isBidiEnabled() {
+  // first check the pref.
+  if (Services.prefs.getBoolPref("bidi.browser.ui", false))
+    return true;
+
+  // if the pref isn't set, check for an RTL locale and force the pref to true
+  // if we find one.
+  var rv = false;
+
+  try {
+    var localeService = Components.classes["@mozilla.org/intl/nslocaleservice;1"]
+                                  .getService(Components.interfaces.nsILocaleService);
+    var systemLocale = localeService.getSystemLocale().getCategory("NSILOCALE_CTYPE").substr(0,3);
+
+    switch (systemLocale) {
+      case "ar-":
+      case "he-":
+      case "fa-":
+      case "ur-":
+      case "syr":
+        rv = true;
+        Services.prefs.setBoolPref("bidi.browser.ui", true);
+    }
+  } catch (e) {}
+
+  return rv;
+}
+
+#ifdef MOZ_UPDATER
+/**
+ * Opens the update manager and checks for updates to the application.
+ */
+function checkForUpdates()
+{
+  var um =
+      Components.classes["@mozilla.org/updates/update-manager;1"].
+      getService(Components.interfaces.nsIUpdateManager);
+  var prompter =
+      Components.classes["@mozilla.org/updates/update-prompt;1"].
+      createInstance(Components.interfaces.nsIUpdatePrompt);
+
+  // If there's an update ready to be applied, show the "Update Downloaded"
+  // UI instead and let the user know they have to restart the application for
+  // the changes to be applied.
+  if (um.activeUpdate && ["pending", "pending-elevate", "applied"].includes(um.activeUpdate.state))
+    prompter.showUpdateDownloaded(um.activeUpdate);
+  else
+    prompter.checkForUpdates();
+}
+#endif
+
+/**
+ * Set up the help menu software update items to show proper status,
+ * also disabling the items if update is disabled.
+ */
+function buildHelpMenu()
+{
+#ifdef MOZ_UPDATER
+  var updates =
+      Components.classes["@mozilla.org/updates/update-service;1"].
+      getService(Components.interfaces.nsIApplicationUpdateService);
+  var um =
+      Components.classes["@mozilla.org/updates/update-manager;1"].
+      getService(Components.interfaces.nsIUpdateManager);
+
+  // Disable the UI if the update enabled pref has been locked by the
+  // administrator or if we cannot update for some other reason.
+  var checkForUpdates = document.getElementById("checkForUpdates");
+  var appMenuCheckForUpdates = document.getElementById("appmenu_checkForUpdates");
+  var canCheckForUpdates = updates.canCheckForUpdates;
+  
+  checkForUpdates.setAttribute("disabled", !canCheckForUpdates);
+
+  if (appMenuCheckForUpdates) {
+    appMenuCheckForUpdates.setAttribute("disabled", !canCheckForUpdates);
+  }
+
+  if (!canCheckForUpdates) {
+    return;
+  }
+
+  var strings = document.getElementById("bundle_browser");
+  var activeUpdate = um.activeUpdate;
+
+  // If there's an active update, substitute its name into the label
+  // we show for this item, otherwise display a generic label.
+  function getStringWithUpdateName(key) {
+    if (activeUpdate && activeUpdate.name)
+      return strings.getFormattedString(key, [activeUpdate.name]);
+    return strings.getString(key + "Fallback");
+  }
+
+  // By default, show "Check for Updates..." from updatesItem_default or
+  // updatesItem_defaultFallback
+  var key = "default";
+  if (activeUpdate) {
+    switch (activeUpdate.state) {
+    case "downloading":
+      // If we're downloading an update at present, show the text:
+      // "Downloading Thunderbird x.x..." from updatesItem_downloading or
+      // updatesItem_downloadingFallback, otherwise we're paused, and show
+      // "Resume Downloading Thunderbird x.x..." from updatesItem_resume or
+      // updatesItem_resumeFallback
+      key = updates.isDownloading ? "downloading" : "resume";
+      break;
+    case "pending":
+      // If we're waiting for the user to restart, show: "Apply Downloaded
+      // Updates Now..." from updatesItem_pending or
+      // updatesItem_pendingFallback
+      key = "pending";
+      break;
+    }
+  }
+
+  checkForUpdates.label = getStringWithUpdateName("updatesItem_" + key);
+
+  if (appMenuCheckForUpdates) {
+    appMenuCheckForUpdates.label = getStringWithUpdateName("updatesItem_" + key);
+  }
+
+  // updatesItem_default.accesskey, updatesItem_downloading.accesskey,
+  // updatesItem_resume.accesskey or updatesItem_pending.accesskey
+  checkForUpdates.accessKey = strings.getString("updatesItem_" + key +
+                                                ".accesskey");
+
+  if (appMenuCheckForUpdates) {
+    appMenuCheckForUpdates.accessKey = strings.getString("updatesItem_" + key +
+                                                         ".accesskey");
+  }
+
+  if (um.activeUpdate && updates.isDownloading) {
+    checkForUpdates.setAttribute("loading", "true");
+    if (appMenuCheckForUpdates) {
+      appMenuCheckForUpdates.setAttribute("loading", "true");
+    }
+  } else {
+    checkForUpdates.removeAttribute("loading");
+    if (appMenuCheckForUpdates) {
+      appMenuCheckForUpdates.removeAttribute("loading");
+    }
+  }
+#else
+#ifndef XP_MACOSX
+  // Some extensions may rely on these being present so only hide the about
+  // separator when there are no elements besides the check for updates menuitem
+  // in between the about separator and the updates separator.
+  var updatesSeparator = document.getElementById("updatesSeparator");
+  var aboutSeparator = document.getElementById("aboutSeparator");
+  var checkForUpdates = document.getElementById("checkForUpdates");
+  if (updatesSeparator.nextSibling === checkForUpdates &&
+      checkForUpdates.nextSibling === aboutSeparator)
+    updatesSeparator.hidden = true;
+#endif
+#endif
+}
+
+
+function openAboutDialog() {
+  var enumerator = Services.wm.getEnumerator("Browser:About");
+  while (enumerator.hasMoreElements()) {
+    // Only open one about window (Bug 599573)
+    let win = enumerator.getNext();
+    win.focus();
+    return;
+  }
+
+#ifdef XP_WIN
+  var features = "chrome,centerscreen,dependent";
+#elifdef XP_MACOSX
+  var features = "chrome,resizable=no,minimizable=no";
+#else
+  var features = "chrome,centerscreen,dependent,dialog=no";
+#endif
+  window.openDialog("chrome://browser/content/aboutDialog.xul", "", features);
+}
+
+function openPreferences(paneID, extraArgs)
+{
+  var instantApply = Services.prefs.getBoolPref("browser.preferences.instantApply", false);
+  var features = "chrome,titlebar,toolbar,centerscreen" + (instantApply ? ",dialog=no" : ",modal");
+
+  var win = Services.wm.getMostRecentWindow("Browser:Preferences");
+  if (win) {
+    win.focus();
+    if (paneID) {
+      var pane = win.document.getElementById(paneID);
+      win.document.documentElement.showPane(pane);
+    }
+
+    if (extraArgs && extraArgs["advancedTab"]) {
+      var advancedPaneTabs = win.document.getElementById("advancedPrefs");
+      advancedPaneTabs.selectedTab = win.document.getElementById(extraArgs["advancedTab"]);
+    }
+
+    return win;
+  }
+
+  return openDialog("chrome://browser/content/preferences/preferences.xul",
+                    "Preferences", features, paneID, extraArgs);
+}
+
+function openAdvancedPreferences(tabID)
+{
+  openPreferences("paneAdvanced", { "advancedTab" : tabID });
+}
+
+/**
+ * Opens the release notes page for this version of the application.
+ */
+function openReleaseNotes()
+{ 
+  var relnotesURL = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
+                              .getService(Components.interfaces.nsIURLFormatter)
+                              .formatURLPref("app.releaseNotesURL");
+  
+  openUILinkIn(relnotesURL, "tab");
+}
+
+/**
+ * Opens the troubleshooting information (about:support) page for this version
+ * of the application.
+ */
+function openTroubleshootingPage()
+{
+  openUILinkIn("about:support", "tab");
+}
+
+/**
+ * Opens the feedback page for this version of the application.
+ */
+function openFeedbackPage()
+{
+  openUILinkIn(Services.prefs.getCharPref("browser.feedback.url"), "tab");
+}
+
+function isElementVisible(aElement)
+{
+  if (!aElement)
+    return false;
+
+  // If aElement or a direct or indirect parent is hidden or collapsed,
+  // height, width or both will be 0.
+  var bo = aElement.boxObject;
+  return (bo.height > 0 && bo.width > 0);
+}
+
+function makeURLAbsolute(aBase, aUrl)
+{
+  // Note:  makeURI() will throw if aUri is not a valid URI
+  return makeURI(aUrl, null, makeURI(aBase)).spec;
+}
+
+
+/**
+ * openNewTabWith: opens a new tab with the given URL.
+ *
+ * @param aURL
+ *        The URL to open (as a string).
+ * @param aDocument
+ *        The document from which the URL came, or null. This is used to set the
+ *        referrer header and to do a security check of whether the document is
+ *        allowed to reference the URL. If null, there will be no referrer
+ *        header and no security check.
+ * @param aPostData
+ *        Form POST data, or null.
+ * @param aEvent
+ *        The triggering event (for the purpose of determining whether to open
+ *        in the background), or null.
+ * @param aAllowThirdPartyFixup
+ *        If true, then we allow the URL text to be sent to third party services
+ *        (e.g., Google's I Feel Lucky) for interpretation. This parameter may
+ *        be undefined in which case it is treated as false.
+ * @param [optional] aReferrer
+ *        If aDocument is null, then this will be used as the referrer.
+ *        There will be no security check.
+ * @param [optional] aReferrerPolicy
+ *        Referrer policy - Ci.nsIHttpChannel.REFERRER_POLICY_*.
+ */ 
+function openNewTabWith(aURL, aDocument, aPostData, aEvent,
+                        aAllowThirdPartyFixup, aReferrer, aReferrerPolicy) {
+  if (aDocument)
+    urlSecurityCheck(aURL, aDocument.nodePrincipal);
+
+  // As in openNewWindowWith(), we want to pass the charset of the
+  // current document over to a new tab.
+  var originCharset = aDocument && aDocument.characterSet;
+  if (!originCharset &&
+      document.documentElement.getAttribute("windowtype") == "navigator:browser")
+    originCharset = window.content.document.characterSet;
+
+  openLinkIn(aURL, aEvent && aEvent.shiftKey ? "tabshifted" : "tab",
+             { charset: originCharset,
+               postData: aPostData,
+               allowThirdPartyFixup: aAllowThirdPartyFixup,
+               referrerURI: aDocument ? aDocument.documentURIObject : aReferrer,
+               referrerPolicy: aReferrerPolicy,
+             });
+}
+
+function openNewWindowWith(aURL, aDocument, aPostData, aAllowThirdPartyFixup,
+                           aReferrer, aReferrerPolicy) {
+  if (aDocument)
+    urlSecurityCheck(aURL, aDocument.nodePrincipal);
+
+  // if and only if the current window is a browser window and it has a
+  // document with a character set, then extract the current charset menu
+  // setting from the current document and use it to initialize the new browser
+  // window...
+  var originCharset = aDocument && aDocument.characterSet;
+  if (!originCharset &&
+      document.documentElement.getAttribute("windowtype") == "navigator:browser")
+    originCharset = window.content.document.characterSet;
+
+  openLinkIn(aURL, "window",
+             { charset: originCharset,
+               postData: aPostData,
+               allowThirdPartyFixup: aAllowThirdPartyFixup,
+               referrerURI: aDocument ? aDocument.documentURIObject : aReferrer,
+               referrerPolicy: aReferrerPolicy,
+             });
+}
+
+/**
+ * isValidFeed: checks whether the given data represents a valid feed.
+ *
+ * @param  aLink
+ *         An object representing a feed with title, href and type.
+ * @param  aPrincipal
+ *         The principal of the document, used for security check.
+ * @param  aIsFeed
+ *         Whether this is already a known feed or not, if true only a security
+ *         check will be performed.
+ */ 
+function isValidFeed(aLink, aPrincipal, aIsFeed)
+{
+  if (!aLink || !aPrincipal)
+    return false;
+
+  var type = aLink.type.toLowerCase().replace(/^\s+|\s*(?:;.*)?$/g, "");
+  if (!aIsFeed) {
+    aIsFeed = (type == "application/rss+xml" ||
+               type == "application/atom+xml");
+  }
+
+  if (aIsFeed) {
+    try {
+      urlSecurityCheck(aLink.href, aPrincipal,
+                       Components.interfaces.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
+      return type || "application/rss+xml";
+    }
+    catch(ex) {
+    }
+  }
+
+  return null;
+}
+
+// aCalledFromModal is optional
+function openHelpLink(aHelpTopic, aCalledFromModal) {
+  var url = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
+                      .getService(Components.interfaces.nsIURLFormatter)
+                      .formatURLPref("app.support.baseURL");
+  url += aHelpTopic;
+
+  var where = aCalledFromModal ? "window" : "tab";
+  openUILinkIn(url, where);
+}
+
+function openPrefsHelp() {
+  // non-instant apply prefwindows are usually modal, so we can't open in the topmost window, 
+  // since its probably behind the window.
+  var instantApply = Services.prefs.getBoolPref("browser.preferences.instantApply");
+
+  var helpTopic = document.getElementsByTagName("prefwindow")[0].currentPane.helpTopic;
+  openHelpLink(helpTopic, !instantApply);
+}
+
+function trimURL(aURL) {
+  // This function must not modify the given URL such that calling
+  // nsIURIFixup::createFixupURI with the result will produce a different URI.
+  return aURL /* remove single trailing slash for http/https/ftp URLs */
+             .replace(/^((?:http|https|ftp):\/\/[^/]+)\/$/, "$1")
+              /* remove http:// unless the host starts with "ftp\d*\." or contains "@" */
+             .replace(/^http:\/\/((?!ftp\d*\.)[^\/@]+(?:\/|$))/, "$1");
+}
diff --git a/webbrowser/base/content/viewSourceOverlay.xul b/webbrowser/base/content/viewSourceOverlay.xul
new file mode 100644
index 0000000..8b40ddf
--- /dev/null
+++ b/webbrowser/base/content/viewSourceOverlay.xul
@@ -0,0 +1,26 @@
+<?xml version="1.0"?>
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xul-overlay href="chrome://browser/content/baseMenuOverlay.xul"?>
+
+<overlay id="viewSourceOverlay"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<window id="viewSource">
+  <commandset id="baseMenuCommandSet"/>
+  <keyset id="baseMenuKeyset"/>
+  <stringbundleset id="stringbundleset"/>
+</window>
+
+<menubar id="viewSource-main-menubar">
+#ifdef XP_MACOSX
+  <menu id="windowMenu"/>
+  <menupopup id="menu_ToolsPopup"/>
+#endif
+  <menu id="helpMenu"/>
+</menubar>
+
+</overlay>
diff --git a/webbrowser/base/content/web-panels.js b/webbrowser/base/content/web-panels.js
new file mode 100644
index 0000000..6e2bf5b
--- /dev/null
+++ b/webbrowser/base/content/web-panels.js
@@ -0,0 +1,102 @@
+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const NS_ERROR_MODULE_NETWORK = 2152398848;
+const NS_NET_STATUS_READ_FROM = NS_ERROR_MODULE_NETWORK + 8;
+const NS_NET_STATUS_WROTE_TO  = NS_ERROR_MODULE_NETWORK + 9;
+
+function getPanelBrowser()
+{
+    return document.getElementById("web-panels-browser");
+}
+
+var panelProgressListener = {
+    onProgressChange : function (aWebProgress, aRequest,
+                                 aCurSelfProgress, aMaxSelfProgress,
+                                 aCurTotalProgress, aMaxTotalProgress) {
+    },
+    
+    onStateChange : function(aWebProgress, aRequest, aStateFlags, aStatus)
+    {
+        if (!aRequest)
+          return;
+
+        //ignore local/resource:/chrome: files
+        if (aStatus == NS_NET_STATUS_READ_FROM || aStatus == NS_NET_STATUS_WROTE_TO)
+           return;
+
+        if (aStateFlags & Ci.nsIWebProgressListener.STATE_START && 
+            aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
+            window.parent.document.getElementById('sidebar-throbber').setAttribute("loading", "true");
+        }
+        else if (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
+                aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
+            window.parent.document.getElementById('sidebar-throbber').removeAttribute("loading");
+        }
+    },
+
+    onLocationChange : function(aWebProgress, aRequest, aLocation, aFlags) {
+        UpdateBackForwardCommands(getPanelBrowser().webNavigation);
+    },
+
+    onStatusChange : function(aWebProgress, aRequest, aStatus, aMessage) {
+    },
+
+    onSecurityChange : function(aWebProgress, aRequest, aState) { 
+    },
+
+    QueryInterface : function(aIID)
+    {
+        if (aIID.equals(Ci.nsIWebProgressListener) ||
+            aIID.equals(Ci.nsISupportsWeakReference) ||
+            aIID.equals(Ci.nsISupports))
+            return this;
+        throw Cr.NS_NOINTERFACE;
+    }
+};
+
+var gLoadFired = false;
+function loadWebPanel(aURI) {
+    var panelBrowser = getPanelBrowser();
+    if (gLoadFired) {
+        panelBrowser.webNavigation
+                    .loadURI(aURI, nsIWebNavigation.LOAD_FLAGS_NONE,
+                             null, null, null);
+    }
+    panelBrowser.setAttribute("cachedurl", aURI);
+}
+
+function load()
+{
+    var panelBrowser = getPanelBrowser();
+    panelBrowser.webProgress.addProgressListener(panelProgressListener,
+                                                 Ci.nsIWebProgress.NOTIFY_ALL);
+    var cachedurl = panelBrowser.getAttribute("cachedurl")
+    if (cachedurl) {
+        panelBrowser.webNavigation
+                    .loadURI(cachedurl, nsIWebNavigation.LOAD_FLAGS_NONE, null,
+                             null, null);
+    }
+
+    gLoadFired = true;
+}
+
+function unload()
+{
+    getPanelBrowser().webProgress.removeProgressListener(panelProgressListener);
+}
+
+function PanelBrowserStop()
+{
+    getPanelBrowser().webNavigation.stop(nsIWebNavigation.STOP_ALL)
+}
+
+function PanelBrowserReload()
+{
+    getPanelBrowser().webNavigation
+                     .sessionHistory
+                     .QueryInterface(nsIWebNavigation)
+                     .reload(nsIWebNavigation.LOAD_FLAGS_NONE);
+}
diff --git a/webbrowser/base/content/web-panels.xul b/webbrowser/base/content/web-panels.xul
new file mode 100644
index 0000000..ea1e2eb
--- /dev/null
+++ b/webbrowser/base/content/web-panels.xul
@@ -0,0 +1,84 @@
+<?xml version="1.0"?>
+
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+<?xml-stylesheet href="chrome://browser/skin/" type="text/css"?> 
+<?xul-overlay href="chrome://global/content/editMenuOverlay.xul"?>
+<?xul-overlay href="chrome://browser/content/places/placesOverlay.xul"?>
+
+<!DOCTYPE page [
+<!ENTITY % browserDTD SYSTEM "chrome://browser/locale/browser.dtd">
+%browserDTD;
+<!ENTITY % textcontextDTD SYSTEM "chrome://global/locale/textcontext.dtd">
+%textcontextDTD;
+]>
+
+<page id="webpanels-window"
+        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="load()" onunload="unload()">
+  <script type="application/javascript" src="chrome://global/content/contentAreaUtils.js"/>
+  <script type="application/javascript" src="chrome://browser/content/browser.js"/>
+  <script type="application/javascript" src="chrome://global/content/inlineSpellCheckUI.js"/>
+  <script type="application/javascript" src="chrome://browser/content/nsContextMenu.js"/>
+  <script type="application/javascript" src="chrome://browser/content/web-panels.js"/>
+
+  <stringbundleset id="stringbundleset"> 
+    <stringbundle id="bundle_browser" src="chrome://browser/locale/browser.properties"/>
+  </stringbundleset>
+
+  <broadcasterset id="mainBroadcasterSet">
+    <broadcaster id="isFrameImage"/>
+  </broadcasterset>
+
+  <commandset id="mainCommandset">
+    <command id="Browser:Back"
+             oncommand="getPanelBrowser().webNavigation.goBack();"
+             disabled="true"/>
+    <command id="Browser:Forward"
+             oncommand="getPanelBrowser().webNavigation.goForward();"
+             disabled="true"/>
+    <command id="Browser:Stop" oncommand="PanelBrowserStop();"/>
+    <command id="Browser:Reload" oncommand="PanelBrowserReload();"/>
+    <command id="Browser:BackOrBackDuplicate"
+             oncommand="getPanelBrowser().webNavigation.goBack(event);"
+             disabled="true">
+      <observes element="Browser:Back" attribute="disabled"/>
+    </command>
+    <command id="Browser:ForwardOrForwardDuplicate"
+             oncommand="getPanelBrowser().webNavigation.goForward(event);"
+             disabled="true">
+      <observes element="Browser:Forward" attribute="disabled"/>
+    </command>
+    <command id="Browser:ReloadOrDuplicate"
+             oncommand="PanelBrowserReload(event)"
+             disabled="true">
+      <observes element="Browser:Reload" attribute="disabled"/>
+    </command>
+  </commandset>
+
+  <popupset id="mainPopupSet">
+    <tooltip id="aHTMLTooltip" page="true"/>
+    <menupopup id="contentAreaContextMenu" pagemenu="start"
+               onpopupshowing="if (event.target != this)
+                                 return true;
+                               gContextMenu = new nsContextMenu(this, event.shiftKey);
+                               if (gContextMenu.shouldDisplay)
+                                 document.popupNode = this.triggerNode;
+                               return gContextMenu.shouldDisplay;"
+               onpopuphiding="if (event.target != this)
+                                return;
+                              gContextMenu.hiding();
+                              gContextMenu = null;">
+#include browser-context.inc
+    </menupopup>
+  </popupset>
+
+  <commandset id="editMenuCommands"/> 
+  <browser id="web-panels-browser" persist="cachedurl" type="content" flex="1"
+           context="contentAreaContextMenu" tooltip="aHTMLTooltip"
+           onclick="window.parent.contentAreaClick(event, true);"/>
+</page>
diff --git a/webbrowser/base/content/win6BrowserOverlay.xul b/webbrowser/base/content/win6BrowserOverlay.xul
new file mode 100644
index 0000000..a69e3f6
--- /dev/null
+++ b/webbrowser/base/content/win6BrowserOverlay.xul
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+
+<!-- -*- Mode: HTML -*- -->
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<overlay id="win6-browser-overlay"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <toolbar id="toolbar-menubar"
+           autohide="true"/>
+</overlay>