Revert "Add Basilisk"

This reverts commit e72ef92b5bdc43cd2584198e2e54e951b70299e8.

1 files changed, 0 insertions, 943 deletions

diff --git a/application/basilisk/base/content/utilityOverlay.js b/application/basilisk/base/content/utilityOverlay.js
deleted file mode 100644
index 703d98271..000000000
--- a/application/basilisk/base/content/utilityOverlay.js
+++ /dev/null
@@ -1,943 +0,0 @@
-/* -*- indent-tabs-mode: nil; js-indent-level: 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/. */
-
-// Services = object with smart getters for common XPCOM services
-Components.utils.import("resource://gre/modules/ContextualIdentityService.jsm");
-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.defineLazyServiceGetter(this, "aboutNewTabService",
-                                   "@mozilla.org/browser/aboutnewtab-service;1",
-                                   "nsIAboutNewTabService");
-
-this.__defineGetter__("BROWSER_NEW_TAB_URL", () => {
-  if (PrivateBrowsingUtils.isWindowPrivate(window) &&
-      !PrivateBrowsingUtils.permanentPrivateBrowsing &&
-      !aboutNewTabService.overridden) {
-    return "about:privatebrowsing";
-  }
-  return aboutNewTabService.newTabURL;
-});
-
-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) {
-  return aURL == "about:blank" || aURL == BROWSER_NEW_TAB_URL;
-}
-
-function getBrowserURL() {
-  return "chrome://browser/content/browser.xul";
-}
-
-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");
-}
-
-function getBoolPref(prefname, def) {
-  try {
-    return Services.prefs.getBoolPref(prefname);
-  } catch (er) {
-    return def;
-  }
-}
-
-/* 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_UNSET,
-      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 = 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
-  var metaKey = meta;
-#else
-  var metaKey = ctrl;
-#endif
-
-  if (metaKey || (middle && middleUsesTabs))
-    return shift ? "tabshifted" : "tab";
-
-  if (alt && 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)
- *   skipTabAnimation     (boolean)
- *   allowPinnedTabHostChange (boolean)
- *   allowPopups          (boolean)
- *   userContextId        (unsigned int)
- *   targetBrowser        (XUL browser)
- */
-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_UNSET,
-    };
-  }
-
-  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_UNSET);
-  var aRelatedToCurrent     = params.relatedToCurrent;
-  var aAllowMixedContent    = params.allowMixedContent;
-  var aForceAllowDataURI    = params.forceAllowDataURI;
-  var aInBackground         = params.inBackground;
-  var aDisallowInheritPrincipal = params.disallowInheritPrincipal;
-  var aInitiatingDoc        = params.initiatingDoc;
-  var aIsPrivate            = params.private;
-  var aSkipTabAnimation     = params.skipTabAnimation;
-  var aAllowPinnedTabHostChange = !!params.allowPinnedTabHostChange;
-  var aNoReferrer           = params.noReferrer;
-  var aAllowPopups          = !!params.allowPopups;
-  var aUserContextId        = params.userContextId;
-  var aIndicateErrorPageLoad = params.indicateErrorPageLoad;
-  var aPrincipal            = params.originPrincipal;
-  var aForceAboutBlankViewerInCurrent =
-      params.forceAboutBlankViewerInCurrent;
-
-  if (where == "save") {
-    // TODO(1073187): propagate referrerPolicy.
-
-    // ContentClick.jsm passes isContentWindowPrivate for saveURL instead of passing a CPOW initiatingDoc
-    if ("isContentWindowPrivate" in params) {
-      saveURL(url, null, null, true, true, aNoReferrer ? null : aReferrerURI, null, params.isContentWindowPrivate);
-    } else {
-      if (!aInitiatingDoc) {
-        Components.utils.reportError("openUILink/openLinkIn was called with " +
-          "where == 'save' but without initiatingDoc.  See bug 814264.");
-        return;
-      }
-      saveURL(url, null, null, true, true, aNoReferrer ? null : aReferrerURI, aInitiatingDoc);
-    }
-    return;
-  }
-
-  // Establish which window we'll load the link in.
-  let w;
-  if (where == "current" && params.targetBrowser) {
-    w = params.targetBrowser.ownerGlobal;
-  } else {
-    w = getTopWin();
-  }
-  // We don't want to open tabs in popups, so try to find a non-popup window in
-  // that case.
-  if ((where == "tab" || where == "tabshifted") &&
-      w && !w.toolbar.visible) {
-    w = getTopWin(true);
-    aRelatedToCurrent = false;
-  }
-
-  // Teach the principal about the right OA to use, e.g. in case when
-  // opening a link in a new private window, or in a new container tab.
-  // 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)
-  if (aPrincipal && aPrincipal.isCodebasePrincipal) {
-    let attrs = {
-      userContextId: aUserContextId,
-      privateBrowsingId: aIsPrivate || (w && PrivateBrowsingUtils.isWindowPrivate(w)),
-    };
-    aPrincipal = Services.scriptSecurityManager.createCodebasePrincipal(aPrincipal.URI, attrs);
-  }
-
-  if (!w || where == "window") {
-    // Strip referrer data when opening a new private window, to prevent
-    // regular browsing data from leaking into it.
-    if (aIsPrivate) {
-      aNoReferrer = true;
-    }    
-    
-    // This propagates to window.arguments.
-    var sa = Cc["@mozilla.org/array;1"].
-             createInstance(Ci.nsIMutableArray);
-
-    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 && !aNoReferrer) {
-      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;
-
-    var userContextIdSupports = Cc["@mozilla.org/supports-PRUint32;1"].
-                                 createInstance(Ci.nsISupportsPRUint32);
-    userContextIdSupports.data = aUserContextId;
-
-    sa.appendElement(wuri, /* weak =*/ false);
-    sa.appendElement(charset, /* weak =*/ false);
-    sa.appendElement(referrerURISupports, /* weak =*/ false);
-    sa.appendElement(aPostData, /* weak =*/ false);
-    sa.appendElement(allowThirdPartyFixupSupports, /* weak =*/ false);
-    sa.appendElement(referrerPolicySupports, /* weak =*/ false);
-    sa.appendElement(userContextIdSupports, /* weak =*/ false);
-    sa.appendElement(aPrincipal, /* weak =*/ false);
-
-    let features = "chrome,dialog=no,all";
-    if (aIsPrivate) {
-      features += ",private";
-    }
-
-    Services.ww.openWindow(w || window, getBrowserURL(), null, features, sa);
-    return;
-  }
-
-  // We're now committed to loading the link in an existing browser window.
-
-  // 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 targetBrowser;
-  let loadInBackground;
-  let uriObj;
-
-  if (where == "current") {
-    targetBrowser = params.targetBrowser || w.gBrowser.selectedBrowser;
-    loadInBackground = false;
-
-    try {
-      uriObj = Services.io.newURI(url);
-    } catch (e) {}
-
-    if (w.gBrowser.getTabForBrowser(targetBrowser).pinned &&
-        !aAllowPinnedTabHostChange) {
-      try {
-        // nsIURI.host can throw for non-nsStandardURL nsIURIs.
-        if (!uriObj || (!uriObj.schemeIs("javascript") &&
-                        targetBrowser.currentURI.host != uriObj.host)) {
-          where = "tab";
-          loadInBackground = false;
-        }
-      } catch (err) {
-        where = "tab";
-        loadInBackground = false;
-      }
-    }
-  } else {
-    // 'where' is "tab" or "tabshifted", so we'll load the link in a new tab.
-    loadInBackground = aInBackground;
-    if (loadInBackground == null) {
-      loadInBackground =
-        aFromChrome ? false : getBoolPref("browser.tabs.loadInBackground");
-    }
-  }
-
-  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;
-    }
-
-    // LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL isn't supported for javascript URIs,
-    // i.e. it causes them not to load at all. Callers should strip
-    // "javascript:" from pasted strings to protect users from malicious URIs
-    // (see stripUnsafeProtocolOnPaste).
-    if (aDisallowInheritPrincipal && !(uriObj && uriObj.schemeIs("javascript"))) {
-      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
-    }
-
-    if (aAllowPopups) {
-      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_POPUPS;
-    }
-    if (aIndicateErrorPageLoad) {
-      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_ERROR_LOAD_CHANGES_RV;
-    }
-    if (aForceAllowDataURI) {
-      flags |= Ci.nsIWebNavigation.LOAD_FLAGS_FORCE_ALLOW_DATA_URI;
-    }
-
-    if (aForceAboutBlankViewerInCurrent) {
-      targetBrowser.createAboutBlankContentViewer(aPrincipal);
-    }
-
-    targetBrowser.loadURIWithFlags(url, {
-      triggeringPrincipal: aPrincipal,
-      flags,
-      referrerURI: aNoReferrer ? null : aReferrerURI,
-      referrerPolicy: aReferrerPolicy,
-      postData: aPostData,
-      userContextId: aUserContextId
-    });
-    break;
-  case "tabshifted":
-    loadInBackground = !loadInBackground;
-    // fall through
-  case "tab":
-    let tabUsedForLoad = w.gBrowser.loadOneTab(url, {
-      referrerURI: aReferrerURI,
-      referrerPolicy: aReferrerPolicy,
-      charset: aCharset,
-      postData: aPostData,
-      inBackground: loadInBackground,
-      allowThirdPartyFixup: aAllowThirdPartyFixup,
-      relatedToCurrent: aRelatedToCurrent,
-      skipAnimation: aSkipTabAnimation,
-      allowMixedContent: aAllowMixedContent,
-      noReferrer: aNoReferrer,
-      userContextId: aUserContextId,
-      originPrincipal: aPrincipal,
-      triggeringPrincipal: aPrincipal,
-    });
-    targetBrowser = tabUsedForLoad.linkedBrowser;
-    break;
-  }
-
-  // Focus the content, but only if the browser used for the load is selected.
-  if (targetBrowser == w.gBrowser.selectedBrowser) {
-    targetBrowser.focus();
-  }
-
-  if (!loadInBackground && w.isBlankPageURL(url)) {
-    w.focusAndSelectUrlBar();
-  }
-}
-
-// 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);
-  }
-}
-
-// Populate a menu with user-context menu items. This method should be called
-// by onpopupshowing passing the event as first argument.
-function createUserContextMenu(event, {
-                                        isContextMenu = false,
-                                        excludeUserContextId = 0,
-                                        useAccessKeys = true
-                                      } = {}) {
-  while (event.target.hasChildNodes()) {
-    event.target.removeChild(event.target.firstChild);
-  }
-
-  let bundle = document.getElementById("bundle_browser");
-  let docfrag = document.createDocumentFragment();
-
-  // If we are excluding a userContextId, we want to add a 'no-container' item.
-  if (excludeUserContextId) {
-    let menuitem = document.createElement("menuitem");
-    menuitem.setAttribute("data-usercontextid", "0");
-    menuitem.setAttribute("label", bundle.getString("userContextNone.label"));
-    menuitem.setAttribute("accesskey", bundle.getString("userContextNone.accesskey"));
-
-    // We don't set an oncommand/command attribute because if we have
-    // to exclude a userContextId we are generating the contextMenu and
-    // isContextMenu will be true.
-
-    docfrag.appendChild(menuitem);
-
-    let menuseparator = document.createElement("menuseparator");
-    docfrag.appendChild(menuseparator);
-  }
-
-  ContextualIdentityService.getIdentities().forEach(identity => {
-    if (identity.userContextId == excludeUserContextId) {
-      return;
-    }
-
-    let menuitem = document.createElement("menuitem");
-    menuitem.setAttribute("data-usercontextid", identity.userContextId);
-    menuitem.setAttribute("label", ContextualIdentityService.getUserContextLabel(identity.userContextId));
-
-    if (identity.accessKey && useAccessKeys) {
-      menuitem.setAttribute("accesskey", bundle.getString(identity.accessKey));
-    }
-
-    menuitem.classList.add("menuitem-iconic");
-    menuitem.setAttribute("data-identity-color", identity.color);
-
-    if (!isContextMenu) {
-      menuitem.setAttribute("command", "Browser:NewUserContextTab");
-    }
-
-    menuitem.setAttribute("data-identity-icon", identity.icon);
-
-    docfrag.appendChild(menuitem);
-  });
-
-  if (!isContextMenu) {
-    docfrag.appendChild(document.createElement("menuseparator"));
-
-    let menuitem = document.createElement("menuitem");
-    menuitem.setAttribute("label",
-                          bundle.getString("userContext.aboutPage.label"));
-    if (useAccessKeys) {
-      menuitem.setAttribute("accesskey",
-                            bundle.getString("userContext.aboutPage.accesskey"));
-    }
-    menuitem.setAttribute("command", "Browser:OpenAboutContainers");
-    docfrag.appendChild(menuitem);
-  }
-
-  event.target.appendChild(docfrag);
-  return true;
-}
-
-// 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);
-  }
-}
-
-/** This function takes in a key element and compares it to the keys pressed during an event.
- *
- * @param aEvent
- *        The KeyboardEvent event you want to compare against your key.
- *
- * @param aKey
- *        The <key> element checked to see if it was called in aEvent.
- *        For example, aKey can be a variable set to document.getElementById("key_close")
- *        to check if the close command key was pressed in aEvent.
-*/
-function eventMatchesKey(aEvent, aKey) {
-  let keyPressed = aKey.getAttribute("key").toLowerCase();
-  let keyModifiers = aKey.getAttribute("modifiers");
-  let modifiers = ["Alt", "Control", "Meta", "Shift"];
-
-  if (aEvent.key != keyPressed) {
-    return false;
-  }
-  let eventModifiers = modifiers.filter(modifier => aEvent.getModifierState(modifier));
-  // Check if aEvent has a modifier and aKey doesn't
-  if (eventModifiers.length > 0 && keyModifiers.length == 0) {
-     return false;
-  }
-  // Check whether aKey's modifiers match aEvent's modifiers
-  if (keyModifiers) {
-    keyModifiers = keyModifiers.split(/[\s,]+/);
-    // Capitalize first letter of aKey's modifers to compare to aEvent's modifier
-    keyModifiers.forEach(function(modifier, index) {
-      if (modifier == "accel") {
-#ifdef XP_MACOSX
-        keyModifiers[index] = "Meta";
-#else
-        keyModifiers[index] = "Control";
-#endif
-      } else {
-        keyModifiers[index] = modifier[0].toUpperCase() + modifier.slice(1);
-      }
-    });
-    return modifiers.every(modifier => keyModifiers.includes(modifier) == aEvent.getModifierState(modifier));
-  }
-  return true;
-}
-
-// 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, add that.
-      var altText = node.getAttribute( "alt" );
-      if ( altText && altText != "" ) {
-        text += " " + altText;
-      }
-    }
-    // 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 and tailing whitespace.
-  text = text.trim();
-  // 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 (getBoolPref("bidi.browser.ui", false))
-    return true;
-
-  // then check intl.uidirection.<locale>
-  var chromeReg = Components.classes["@mozilla.org/chrome/chrome-registry;1"].
-                  getService(Components.interfaces.nsIXULChromeRegistry);
-  if (chromeReg.isLocaleRTL("global"))
-    return true;
-
-  // now see if the system locale is an RTL 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 "ug-":
-      case "ur-":
-      case "syr":
-        rv = true;
-        Services.prefs.setBoolPref("bidi.browser.ui", true);
-    }
-  } catch (e) {}
-
-  return rv;
-}
-
-function openAboutDialog() {
-  var enumerator = Services.wm.getEnumerator("Browser:About");
-  while (enumerator.hasMoreElements()) {
-    // Only open one about window (Bug 599573)
-    let win = enumerator.getNext();
-    if (win.closed) {
-      continue;
-    }
-    win.focus();
-    return;
-  }
-
-#ifdef XP_WIN
-  var features = "chrome,centerscreen,dependent";
-#elif 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) {
-  function switchToAdvancedSubPane(doc) {
-    if (extraArgs && extraArgs["advancedTab"]) {
-      let advancedPaneTabs = doc.getElementById("advancedPrefs");
-      advancedPaneTabs.selectedTab = doc.getElementById(extraArgs["advancedTab"]);
-    }
-  }
-
-  // This function is duplicated from preferences.js.
-  function internalPrefCategoryNameToFriendlyName(aName) {
-    return (aName || "").replace(/^pane./, function(toReplace) { return toReplace[4].toLowerCase(); });
-  }
-
-  let win = Services.wm.getMostRecentWindow("navigator:browser");
-  let friendlyCategoryName = internalPrefCategoryNameToFriendlyName(paneID);
-  let params;
-  if (extraArgs && extraArgs["urlParams"]) {
-    params = new URLSearchParams();
-    let urlParams = extraArgs["urlParams"];
-    for (let name in urlParams) {
-      if (urlParams[name] !== undefined) {
-        params.set(name, urlParams[name]);
-      }
-    }
-  }
-  let preferencesURL = "about:preferences" + (params ? "?" + params : "") +
-                       (friendlyCategoryName ? "#" + friendlyCategoryName : "");
-  let newLoad = true;
-  let browser = null;
-  if (!win) {
-    const Cc = Components.classes;
-    const Ci = Components.interfaces;
-    let windowArguments = Cc["@mozilla.org/array;1"]
-                            .createInstance(Ci.nsIMutableArray);
-    let supportsStringPrefURL = Cc["@mozilla.org/supports-string;1"]
-                                  .createInstance(Ci.nsISupportsString);
-    supportsStringPrefURL.data = preferencesURL;
-    windowArguments.appendElement(supportsStringPrefURL, /* weak =*/ false);
-
-    win = Services.ww.openWindow(null, Services.prefs.getCharPref("browser.chromeURL"),
-                                 "_blank", "chrome,dialog=no,all", windowArguments);
-  } else {
-    let shouldReplaceFragment = friendlyCategoryName ? "whenComparingAndReplace" : "whenComparing";
-    newLoad = !win.switchToTabHavingURI(preferencesURL, true, { ignoreFragment: shouldReplaceFragment, replaceQueryString: true });
-    browser = win.gBrowser.selectedBrowser;
-  }
-
-  if (newLoad) {
-    Services.obs.addObserver(function advancedPaneLoadedObs(prefWin, topic, data) {
-      if (!browser) {
-        browser = win.gBrowser.selectedBrowser;
-      }
-      if (prefWin != browser.contentWindow) {
-        return;
-      }
-      Services.obs.removeObserver(advancedPaneLoadedObs, "advanced-pane-loaded");
-      switchToAdvancedSubPane(browser.contentDocument);
-    }, "advanced-pane-loaded", false);
-  } else {
-    if (paneID) {
-      browser.contentWindow.gotoPref(paneID);
-    }
-    switchToAdvancedSubPane(browser.contentDocument);
-  }
-}
-
-function openAdvancedPreferences(tabID) {
-  openPreferences("paneAdvanced", { "advancedTab" : tabID });
-}
-
-/**
- * Opens the troubleshooting information (about:support) page for this version
- * of the application.
- */
-function openTroubleshootingPage() {
-  openUILinkIn("about:support", "tab");
-}
-
-/**
- * Opens the troubleshooting information (about:support) page for this version
- * of the application.
- */
-function openHealthReport() {
-  openUILinkIn("about:healthreport", "tab");
-}
-
-/**
- * Opens the feedback page for this version of the application.
- */
-function openFeedbackPage() {
-  var url = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
-                      .getService(Components.interfaces.nsIURLFormatter)
-                      .formatURLPref("app.feedback.baseURL");
-  openUILinkIn(url, "tab");
-}
-
-function openTourPage() {
-  let scope = {}
-  Components.utils.import("resource:///modules/UITour.jsm", scope);
-  openUILinkIn(scope.UITour.url, "tab");
-}
-
-function buildHelpMenu() {
-  // Enable/disable the "Report Web Forgery" menu item.
-  if (typeof gSafeBrowsing != "undefined") {
-    gSafeBrowsing.setReportPhishingMenu();
-  }
-}
-
-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
- *        Note this parameter is now ignored. There is no security check & no
- *        referrer header derived from aDocument (null case).
- * @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
- *        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) {
-
-  // As in openNewWindowWith(), we want to pass the charset of the
-  // current document over to a new tab.
-  let originCharset = null;
-  if (document.documentElement.getAttribute("windowtype") == "navigator:browser")
-    originCharset = gBrowser.selectedBrowser.characterSet;
-
-  openLinkIn(aURL, aEvent && aEvent.shiftKey ? "tabshifted" : "tab",
-             { charset: originCharset,
-               postData: aPostData,
-               allowThirdPartyFixup: aAllowThirdPartyFixup,
-               referrerURI: aReferrer,
-               referrerPolicy: aReferrerPolicy,
-             });
-}
-
-/**
- * @param aDocument
- *        Note this parameter is ignored. See openNewTabWith()
- */
-function openNewWindowWith(aURL, aDocument, aPostData, aAllowThirdPartyFixup,
-                           aReferrer, aReferrerPolicy) {
-  // Extract the current charset menu setting from the current document and
-  // use it to initialize the new browser window...
-  let originCharset = null;
-  if (document.documentElement.getAttribute("windowtype") == "navigator:browser")
-    originCharset = gBrowser.selectedBrowser.characterSet;
-
-  openLinkIn(aURL, "window",
-             { charset: originCharset,
-               postData: aPostData,
-               allowThirdPartyFixup: aAllowThirdPartyFixup,
-               referrerURI: aReferrer,
-               referrerPolicy: aReferrerPolicy,
-             });
-}
-
-function getHelpLinkURL(aHelpTopic) {
-  var url = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
-                      .getService(Components.interfaces.nsIURLFormatter)
-                      .formatURLPref("app.support.baseURL");
-  return url + aHelpTopic;
-}
-
-// aCalledFromModal is optional
-function openHelpLink(aHelpTopic, aCalledFromModal, aWhere) {
-  var url = getHelpLinkURL(aHelpTopic);
-  var where = aWhere;
-  if (!aWhere)
-    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 = 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.
-
-  // remove single trailing slash for http/https/ftp URLs
-  let url = aURL.replace(/^((?:http|https|ftp):\/\/[^/]+)\/$/, "$1");
-
-  // remove http://
-  if (!url.startsWith("http://")) {
-    return url;
-  }
-  let urlWithoutProtocol = url.substring(7);
-
-  let flags = Services.uriFixup.FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP |
-              Services.uriFixup.FIXUP_FLAG_FIX_SCHEME_TYPOS;
-  let fixedUpURL, expectedURLSpec;
-  try {
-    fixedUpURL = Services.uriFixup.createFixupURI(urlWithoutProtocol, flags);
-    expectedURLSpec = makeURI(aURL).spec;
-  } catch (ex) {
-    return url;
-  }
-  if (fixedUpURL.spec == expectedURLSpec) {
-    return urlWithoutProtocol;
-  }
-  return url;
-}