Issue #1053 - Drop support Android and remove Fennec - Part 1a: Remove mobile/android

52 files changed, 0 insertions, 15848 deletions

diff --git a/mobile/android/chrome/content/.eslintrc b/mobile/android/chrome/content/.eslintrc
deleted file mode 100644
index 32513189a..000000000
--- a/mobile/android/chrome/content/.eslintrc
+++ /dev/null
@@ -1,23 +0,0 @@
-globals:
-    # TODO: Maybe this should be by file
-    BrowserApp: false
-    Cc: false
-    Ci: false
-    Cu: false
-    NativeWindow: false
-    PageActions: false
-    ReaderMode: false
-    SimpleServiceDiscovery: false
-    TabMirror: false
-    MediaPlayerApp: false
-    RokuApp: false
-    SearchEngines: false
-    ConsoleAPI: true
-    Point: false
-    Rect: false
-
-rules:
-    # Disabled stuff
-    no-console: 0 # TODO: Can we use console?
-    no-cond-assign: 0
-    no-fallthrough: 0
diff --git a/mobile/android/chrome/content/ActionBarHandler.js b/mobile/android/chrome/content/ActionBarHandler.js
deleted file mode 100644
index 190021043..000000000
--- a/mobile/android/chrome/content/ActionBarHandler.js
+++ /dev/null
@@ -1,731 +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/. */
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-const PHONE_REGEX = /^\+?[0-9\s,-.\(\)*#pw]{1,30}$/; // Are we a phone #?
-
-
-/**
- * ActionBarHandler Object and methods. Interface between Gecko Text Selection code
- * (AccessibleCaret, etc) and the Mobile ActionBar UI.
- */
-var ActionBarHandler = {
-  // Error codes returned from _init().
-  START_TOUCH_ERROR: {
-    NO_CONTENT_WINDOW: "No valid content Window found.",
-    NONE: "",
-  },
-
-  _nextSelectionID: 1, // Next available.
-  _selectionID: null, // Unique Selection ID, assigned each time we _init().
-
-  _boundingClientRect: null, // Current selections boundingClientRect.
-  _actionBarActions: null, // Most-recent set of actions sent to ActionBar.
-
-  /**
-   * Receive and act on AccessibleCarets caret state-change
-   * (mozcaretstatechanged) events.
-   */
-  caretStateChangedHandler: function(e) {
-    // Close an open ActionBar, if carets no longer logically visible.
-    if (this._selectionID && !e.caretVisible) {
-      this._uninit(false);
-      return;
-    }
-
-    if (!this._selectionID && e.collapsed) {
-      switch (e.reason) {
-        case 'longpressonemptycontent':
-        case 'taponcaret':
-          // Show ActionBar when long pressing on an empty input or single
-          // tapping on the caret.
-          this._init(e.boundingClientRect);
-          break;
-
-        case 'updateposition':
-          // Do not show ActionBar when single tapping on an non-empty editable
-          // input.
-          break;
-
-        default:
-          break;
-      }
-      return;
-    }
-
-    // Open a closed ActionBar if carets actually visible.
-    if (!this._selectionID && e.caretVisuallyVisible) {
-      this._init(e.boundingClientRect);
-      return;
-    }
-
-    // Else, update an open ActionBar.
-    if (this._selectionID) {
-      if (!this._selectionHasChanged()) {
-        // Still the same active selection.
-        if (e.reason == 'presscaret' || e.reason == 'scroll') {
-          // boundingClientRect doesn't matter since we are hiding the floating
-          // toolbar.
-          this._updateVisibility();
-        } else {
-          // Selection changes update boundingClientRect.
-          this._boundingClientRect = e.boundingClientRect;
-          let forceUpdate = e.reason == 'updateposition' || e.reason == 'releasecaret';
-          this._sendActionBarActions(forceUpdate);
-        }
-      } else {
-        // We've started a new selection entirely.
-        this._uninit(false);
-        this._init(e.boundingClientRect);
-      }
-    }
-  },
-
-  /**
-   * ActionBarHandler notification observers.
-   */
-  observe: function(subject, topic, data) {
-    switch (topic) {
-      // User click an ActionBar button.
-      case "TextSelection:Action": {
-        if (!this._selectionID) {
-          break;
-        }
-        for (let type in this.actions) {
-          let action = this.actions[type];
-          if (action.id == data) {
-            action.action(this._targetElement, this._contentWindow);
-            break;
-          }
-        }
-        break;
-      }
-
-      // Provide selected text to FindInPageBar on request.
-      case "TextSelection:Get": {
-        Messaging.sendRequest({
-          type: "TextSelection:Data",
-          requestId: data,
-          text: this._getSelectedText(),
-        });
-
-        this._uninit();
-        break;
-      }
-
-      // User closed ActionBar by clicking "checkmark" button.
-      case "TextSelection:End": {
-        // End the requested selection only.
-        if (this._selectionID == JSON.parse(data).selectionID) {
-          this._uninit();
-        }
-        break;
-      }
-    }
-  },
-
-  /**
-   * Called when Gecko AccessibleCaret becomes visible.
-   */
-  _init: function(boundingClientRect) {
-    let [element, win] = this._getSelectionTargets();
-    if (!win) {
-      return this.START_TOUCH_ERROR.NO_CONTENT_WINDOW;
-    }
-
-    // Hold the ActionBar ID provided by Gecko.
-    this._selectionID = this._nextSelectionID++;
-    [this._targetElement, this._contentWindow] = [element, win];
-    this._boundingClientRect = boundingClientRect;
-
-    // Open the ActionBar, send it's actions list.
-    Messaging.sendRequest({
-      type: "TextSelection:ActionbarInit",
-      selectionID: this._selectionID,
-    });
-    this._sendActionBarActions(true);
-
-    return this.START_TOUCH_ERROR.NONE;
-  },
-
-  /**
-   * Called when content is scrolled and handles are hidden.
-   */
-  _updateVisibility: function() {
-    Messaging.sendRequest({
-      type: "TextSelection:Visibility",
-      selectionID: this._selectionID,
-    });
-  },
-
-  /**
-   * Determines the window containing the selection, and its
-   * editable element if present.
-   */
-  _getSelectionTargets: function() {
-    let [element, win] = [Services.focus.focusedElement, Services.focus.focusedWindow];
-    if (!element) {
-      // No focused editable.
-      return [null, win];
-    }
-
-    // Return focused editable text element and its window.
-    if (((element instanceof HTMLInputElement) && element.mozIsTextField(false)) ||
-        (element instanceof HTMLTextAreaElement) ||
-        element.isContentEditable) {
-      return [element, win];
-    }
-
-    // Focused element can't contain text.
-    return [null, win];
-  },
-
-  /**
-   * The active Selection has changed, if the current focused element / win,
-   * pair, or state of the win's designMode changes.
-   */
-  _selectionHasChanged: function() {
-    let [element, win] = this._getSelectionTargets();
-    return (this._targetElement !== element ||
-            this._contentWindow !== win ||
-            this._isInDesignMode(this._contentWindow) !== this._isInDesignMode(win));
-  },
-
-  /**
-   * Called when Gecko AccessibleCaret becomes hidden,
-   * ActionBar is closed by user "close" request, or as a result of object
-   * methods such as SELECT_ALL, PASTE, etc.
-   */
-  _uninit: function(clearSelection = true) {
-    // Bail if there's no active selection.
-    if (!this._selectionID) {
-      return;
-    }
-
-    // Close the ActionBar.
-    Messaging.sendRequest({
-      type: "TextSelection:ActionbarUninit",
-    });
-
-    // Clear the selection ID to complete the uninit(), but leave our reference
-    // to selectionTargets (_targetElement, _contentWindow) in case we need
-    // a final clearSelection().
-    this._selectionID = null;
-    this._boundingClientRect = null;
-
-    // Clear selection required if triggered by self, or TextSelection icon
-    // actions. If called by Gecko CaretStateChangedEvent,
-    // visibility state is already correct.
-    if (clearSelection) {
-      this._clearSelection();
-    }
-  },
-
-  /**
-   * Final UI cleanup when Actionbar is closed by icon click, or where
-   * we terminate selection state after before/after actionbar actions
-   * (Cut, Copy, Paste, Search, Share, Call).
-   */
-  _clearSelection: function(element = this._targetElement, win = this._contentWindow) {
-    // Commit edit compositions, and clear focus from editables.
-    if (element) {
-      let imeSupport = this._getEditor(element, win).QueryInterface(Ci.nsIEditorIMESupport);
-      if (imeSupport.composing) {
-        imeSupport.forceCompositionEnd();
-      }
-      element.blur();
-    }
-
-    // Remove Selection from non-editables and now-unfocused contentEditables.
-    if (!element || element.isContentEditable) {
-      this._getSelection().removeAllRanges();
-    }
-  },
-
-  /**
-   * Called to determine current ActionBar actions and send to TextSelection
-   * handler. By default we only send if current action state differs from
-   * the previous.
-   * @param By default we only send an ActionBarStatus update message if
-   *        there is a change from the previous state. sendAlways can be
-   *        set by init() for example, where we want to always send the
-   *        current state.
-   */
-  _sendActionBarActions: function(sendAlways) {
-    let actions = this._getActionBarActions();
-
-    let actionCountUnchanged = this._actionBarActions &&
-      actions.length === this._actionBarActions.length;
-    let actionsMatch = actionCountUnchanged &&
-      this._actionBarActions.every((e,i) => {
-        return e.id === actions[i].id;
-      });
-
-    if (sendAlways || !actionsMatch) {
-      Messaging.sendRequest({
-        type: "TextSelection:ActionbarStatus",
-        selectionID: this._selectionID,
-        actions: actions,
-        x: this._boundingClientRect.x,
-        y: this._boundingClientRect.y,
-        width: this._boundingClientRect.width,
-        height: this._boundingClientRect.height
-      });
-    }
-
-    this._actionBarActions = actions;
-  },
-
-  /**
-   * Determine and return current ActionBar state.
-   */
-  _getActionBarActions: function(element = this._targetElement, win = this._contentWindow) {
-    let actions = [];
-
-    for (let type in this.actions) {
-      let action = this.actions[type];
-      if (action.selector.matches(element, win)) {
-        let a = {
-          id: action.id,
-          label: this._getActionValue(action, "label", "", element),
-          icon: this._getActionValue(action, "icon", "drawable://ic_status_logo", element),
-          order: this._getActionValue(action, "order", 0, element),
-          floatingOrder: this._getActionValue(action, "floatingOrder", 9, element),
-          showAsAction: this._getActionValue(action, "showAsAction", true, element),
-        };
-        actions.push(a);
-      }
-    }
-    actions.sort((a, b) => b.order - a.order);
-
-    return actions;
-  },
-
-  /**
-   * Provides a value from an action. If the action defines the value as a function,
-   * we return the result of calling the function. Otherwise, we return the value
-   * itself. If the value isn't defined for this action, will return a default.
-   */
-  _getActionValue: function(obj, name, defaultValue, element) {
-    if (!(name in obj))
-      return defaultValue;
-
-    if (typeof obj[name] == "function")
-      return obj[name](element);
-
-    return obj[name];
-  },
-
-  /**
-   * Actionbar callback methods.
-   */
-  actions: {
-
-    SELECT_ALL: {
-      id: "selectall_action",
-      label: Strings.browser.GetStringFromName("contextmenu.selectAll"),
-      icon: "drawable://ab_select_all",
-      order: 5,
-      floatingOrder: 5,
-
-      selector: {
-        matches: function(element, win) {
-          // For editable, check its length. For default contentWindow, assume
-          // true, else there'd been nothing to long-press to open ActionBar.
-          return (element) ? element.textLength != 0 : true;
-        },
-      },
-
-      action: function(element, win) {
-        // Some Mobile keyboards such as SwiftKeyboard, provide auto-suggest
-        // style highlights via composition selections in editables.
-        if (element) {
-          // If we have an active composition string, commit it, and 
-          // ensure proper element focus.
-          let imeSupport = ActionBarHandler._getEditor(element, win).
-            QueryInterface(Ci.nsIEditorIMESupport);
-          if (imeSupport.composing) {
-            element.blur();
-            element.focus();
-          }
-        }
-
-        // Close ActionBarHandler, then selectAll, and display handles.
-        ActionBarHandler._getSelectAllController(element, win).selectAll();
-        UITelemetry.addEvent("action.1", "actionbar", null, "select_all");
-      },
-    },
-
-    CUT: {
-      id: "cut_action",
-      label: Strings.browser.GetStringFromName("contextmenu.cut"),
-      icon: "drawable://ab_cut",
-      order: 4,
-      floatingOrder: 1,
-
-      selector: {
-        matches: function(element, win) {
-          // Can cut from editable, or design-mode document.
-          if (!element && !ActionBarHandler._isInDesignMode(win)) {
-            return false;
-          }
-          // Don't allow "cut" from password fields.
-          if (element instanceof Ci.nsIDOMHTMLInputElement &&
-              !element.mozIsTextField(true)) {
-            return false;
-          }
-          // Don't allow "cut" from disabled/readonly fields.
-          if (element && (element.disabled || element.readOnly)) {
-            return false;
-          }
-          // Allow if selected text exists.
-          return (ActionBarHandler._getSelectedText().length > 0);
-        },
-      },
-
-      action: function(element, win) {
-        // First copy the selection text to the clipboard.
-        let selectedText = ActionBarHandler._getSelectedText();
-        let clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
-          getService(Ci.nsIClipboardHelper);
-        clipboard.copyString(selectedText);
-
-        let msg = Strings.browser.GetStringFromName("selectionHelper.textCopied");
-        Snackbars.show(msg, Snackbars.LENGTH_LONG);
-
-        // Then cut the selection text.
-        ActionBarHandler._getSelection(element, win).deleteFromDocument();
-
-        ActionBarHandler._uninit();
-        UITelemetry.addEvent("action.1", "actionbar", null, "cut");
-      },
-    },
-
-    COPY: {
-      id: "copy_action",
-      label: Strings.browser.GetStringFromName("contextmenu.copy"),
-      icon: "drawable://ab_copy",
-      order: 3,
-      floatingOrder: 2,
-
-      selector: {
-        matches: function(element, win) {
-          // Don't allow "copy" from password fields.
-          if (element instanceof Ci.nsIDOMHTMLInputElement &&
-              !element.mozIsTextField(true)) {
-            return false;
-          }
-          // Allow if selected text exists.
-          return (ActionBarHandler._getSelectedText().length > 0);
-        },
-      },
-
-      action: function(element, win) {
-        let selectedText = ActionBarHandler._getSelectedText();
-        let clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].
-          getService(Ci.nsIClipboardHelper);
-        clipboard.copyString(selectedText);
-
-        let msg = Strings.browser.GetStringFromName("selectionHelper.textCopied");
-        Snackbars.show(msg, Snackbars.LENGTH_LONG);
-
-        ActionBarHandler._uninit();
-        UITelemetry.addEvent("action.1", "actionbar", null, "copy");
-      },
-    },
-
-    PASTE: {
-      id: "paste_action",
-      label: Strings.browser.GetStringFromName("contextmenu.paste"),
-      icon: "drawable://ab_paste",
-      order: 2,
-      floatingOrder: 3,
-
-      selector: {
-        matches: function(element, win) {
-          // Can paste to editable, or design-mode document.
-          if (!element && !ActionBarHandler._isInDesignMode(win)) {
-            return false;
-          }
-          // Can't paste into disabled/readonly fields.
-          if (element && (element.disabled || element.readOnly)) {
-            return false;
-          }
-          // Can't paste if Clipboard empty.
-          let flavors = ["text/unicode"];
-          return Services.clipboard.hasDataMatchingFlavors(flavors, flavors.length,
-            Ci.nsIClipboard.kGlobalClipboard);
-        },
-      },
-
-      action: function(element, win) {
-        // Paste the clipboard, then close the ActionBarHandler and ActionBar.
-        ActionBarHandler._getEditor(element, win).
-          paste(Ci.nsIClipboard.kGlobalClipboard);
-        ActionBarHandler._uninit();
-        UITelemetry.addEvent("action.1", "actionbar", null, "paste");
-      },
-    },
-
-    CALL: {
-      id: "call_action",
-      label: Strings.browser.GetStringFromName("contextmenu.call"),
-      icon: "drawable://phone",
-      order: 1,
-      floatingOrder: 0,
-
-      selector: {
-        matches: function(element, win) {
-          return (ActionBarHandler._getSelectedPhoneNumber() != null);
-        },
-      },
-
-      action: function(element, win) {
-        BrowserApp.loadURI("tel:" +
-          ActionBarHandler._getSelectedPhoneNumber());
-
-        ActionBarHandler._uninit();
-        UITelemetry.addEvent("action.1", "actionbar", null, "call");
-      },
-    },
-
-    SEARCH: {
-      id: "search_action",
-      label: () => Strings.browser.formatStringFromName("contextmenu.search",
-        [Services.search.defaultEngine.name], 1),
-      icon: "drawable://ab_search",
-      order: 1,
-      floatingOrder: 6,
-
-      selector: {
-        matches: function(element, win) {
-          // Allow if selected text exists.
-          return (ActionBarHandler._getSelectedText().length > 0);
-        },
-      },
-
-      action: function(element, win) {
-        let selectedText = ActionBarHandler._getSelectedText();
-        ActionBarHandler._uninit();
-
-        // Set current tab as parent of new tab,
-        // and set new tab as private if the parent is.
-        let searchSubmission = Services.search.defaultEngine.getSubmission(selectedText);
-        let parent = BrowserApp.selectedTab;
-        let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(parent.browser);
-        BrowserApp.addTab(searchSubmission.uri.spec,
-          { parentId: parent.id,
-            selected: true,
-            isPrivate: isPrivate,
-          }
-        );
-
-        UITelemetry.addEvent("action.1", "actionbar", null, "search");
-      },
-    },
-
-    SEARCH_ADD: {
-      id: "search_add_action",
-      label: Strings.browser.GetStringFromName("contextmenu.addSearchEngine3"),
-      icon: "drawable://ab_add_search_engine",
-      order: 0,
-      floatingOrder: 8,
-
-      selector: {
-        matches: function(element, win) {
-          if(!(element instanceof HTMLInputElement)) {
-            return false;
-          }
-          let form = element.form;
-          if (!form || element.type == "password") {
-            return false;
-          }
-
-          let method = form.method.toUpperCase();
-          let canAddEngine = (method == "GET") ||
-            (method == "POST" && (form.enctype != "text/plain" && form.enctype != "multipart/form-data"));
-          if (!canAddEngine) {
-            return false;
-          }
-
-          // If SearchEngine query finds it, then we don't want action to add displayed.
-          if (SearchEngines.visibleEngineExists(element)) {
-            return false;
-          }
-
-          return true;
-        },
-      },
-
-      action: function(element, win) {
-        UITelemetry.addEvent("action.1", "actionbar", null, "add_search_engine");
-
-        // Engines are added asynch. If required, update SelectionUI on callback.
-        SearchEngines.addEngine(element, (result) => {
-          if (result) {
-            ActionBarHandler._sendActionBarActions(true);
-          }
-        });
-      },
-    },
-
-    SHARE: {
-      id: "share_action",
-      label: Strings.browser.GetStringFromName("contextmenu.share"),
-      icon: "drawable://ic_menu_share",
-      order: 0,
-      floatingOrder: 4,
-
-      selector: {
-        matches: function(element, win) {
-          if (!ParentalControls.isAllowed(ParentalControls.SHARE)) {
-            return false;
-          }
-          // Allow if selected text exists.
-          return (ActionBarHandler._getSelectedText().length > 0);
-        },
-      },
-
-      action: function(element, win) {
-        Messaging.sendRequest({
-          type: "Share:Text",
-          text: ActionBarHandler._getSelectedText(),
-        });
-
-        ActionBarHandler._uninit();
-        UITelemetry.addEvent("action.1", "actionbar", null, "share");
-      },
-    },
-  },
-
-  /**
-   * Provides UUID service for generating action ID's.
-   */
-  get _idService() {
-    delete this._idService;
-    return this._idService = Cc["@mozilla.org/uuid-generator;1"].
-      getService(Ci.nsIUUIDGenerator);
-  },
-
-  /**
-   * The targetElement holds an editable element containing a
-   * selection or a caret.
-   */
-  get _targetElement() {
-    if (this._targetElementRef)
-      return this._targetElementRef.get();
-    return null;
-  },
-
-  set _targetElement(element) {
-    this._targetElementRef = Cu.getWeakReference(element);
-  },
-
-  /**
-   * The contentWindow holds the selection, or the targetElement
-   * if it's an editable.
-   */
-  get _contentWindow() {
-    if (this._contentWindowRef)
-      return this._contentWindowRef.get();
-    return null;
-  },
-
-  set _contentWindow(aContentWindow) {
-    this._contentWindowRef = Cu.getWeakReference(aContentWindow);
-  },
-
-  /**
-   * If we have an active selection, is it part of a designMode document?
-   */
-  _isInDesignMode: function(win) {
-    return this._selectionID && (win.document.designMode === "on");
-  },
-
-  /**
-   * Provides the currently selected text, for either an editable,
-   * or for the default contentWindow.
-   */
-  _getSelectedText: function() {
-    // Can be called from FindInPageBar "TextSelection:Get", when there
-    // is no active selection.
-    if (!this._selectionID) {
-      return "";
-    }
-
-    let selection = this._getSelection();
-
-    // Textarea can contain LF, etc.
-    if (this._targetElement instanceof Ci.nsIDOMHTMLTextAreaElement) {
-      let flags = Ci.nsIDocumentEncoder.OutputPreformatted |
-        Ci.nsIDocumentEncoder.OutputRaw;
-      return selection.QueryInterface(Ci.nsISelectionPrivate).
-        toStringWithFormat("text/plain", flags, 0);
-    }
-
-    // Return explicitly selected text.
-    return selection.toString();
-  },
-
-  /**
-   * Provides the nsISelection for either an editor, or from the
-   * default window.
-   */
-  _getSelection: function(element = this._targetElement, win = this._contentWindow) {
-    return (element instanceof Ci.nsIDOMNSEditableElement) ?
-      this._getEditor(element).selection :
-      win.getSelection();
-  },
-
-  /**
-   * Returns an nsEditor or nsHTMLEditor.
-   */
-  _getEditor: function(element = this._targetElement, win = this._contentWindow) {
-    if (element instanceof Ci.nsIDOMNSEditableElement) {
-      return element.QueryInterface(Ci.nsIDOMNSEditableElement).editor;
-    }
-
-    return win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation).
-               QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIEditingSession).
-               getEditorForWindow(win);
-  },
-
-  /**
-   * Returns a selection controller.
-   */
-  _getSelectionController: function(element = this._targetElement, win = this._contentWindow) {
-    if (element instanceof Ci.nsIDOMNSEditableElement) {
-      return this._getEditor(element, win).selectionController;
-    }
-
-    return win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation).
-               QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsISelectionDisplay).
-               QueryInterface(Ci.nsISelectionController);
-  },
-
-  /**
-   * For selectAll(), provides the editor, or the default window selection Controller.
-   */
-  _getSelectAllController: function(element = this._targetElement, win = this._contentWindow) {
-    let editor = this._getEditor(element, win);
-    return (editor) ?
-      editor : this._getSelectionController(element, win);
-  },
-
-  /**
-   * Call / Phone Helper methods.
-   */
-  _getSelectedPhoneNumber: function() {
-    let selectedText = this._getSelectedText().trim();
-    return this._isPhoneNumber(selectedText) ?
-      selectedText : null;
-  },
-
-  _isPhoneNumber: function(selectedText) {
-    return (PHONE_REGEX.test(selectedText));
-  },
-};
diff --git a/mobile/android/chrome/content/CastingApps.js b/mobile/android/chrome/content/CastingApps.js
deleted file mode 100644
index 76773c4d8..000000000
--- a/mobile/android/chrome/content/CastingApps.js
+++ /dev/null
@@ -1,850 +0,0 @@
-// -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
-/* 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/. */
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "PageActions",
-                                  "resource://gre/modules/PageActions.jsm");
-
-// Define service devices. We should consider moving these to their respective
-// JSM files, but we left them here to allow for better lazy JSM loading.
-var rokuDevice = {
-  id: "roku:ecp",
-  target: "roku:ecp",
-  factory: function(aService) {
-    Cu.import("resource://gre/modules/RokuApp.jsm");
-    return new RokuApp(aService);
-  },
-  types: ["video/mp4"],
-  extensions: ["mp4"]
-};
-
-var mediaPlayerDevice = {
-  id: "media:router",
-  target: "media:router",
-  factory: function(aService) {
-    Cu.import("resource://gre/modules/MediaPlayerApp.jsm");
-    return new MediaPlayerApp(aService);
-  },
-  types: ["video/mp4", "video/webm", "application/x-mpegurl"],
-  extensions: ["mp4", "webm", "m3u", "m3u8"],
-  init: function() {
-    Services.obs.addObserver(this, "MediaPlayer:Added", false);
-    Services.obs.addObserver(this, "MediaPlayer:Changed", false);
-    Services.obs.addObserver(this, "MediaPlayer:Removed", false);
-  },
-  observe: function(subject, topic, data) {
-    if (topic === "MediaPlayer:Added") {
-      let service = this.toService(JSON.parse(data));
-      SimpleServiceDiscovery.addService(service);
-    } else if (topic === "MediaPlayer:Changed") {
-      let service = this.toService(JSON.parse(data));
-      SimpleServiceDiscovery.updateService(service);
-    } else if (topic === "MediaPlayer:Removed") {
-      SimpleServiceDiscovery.removeService(data);
-    }
-  },
-  toService: function(display) {
-    // Convert the native data into something matching what is created in _processService()
-    return {
-      location: display.location,
-      target: "media:router",
-      friendlyName: display.friendlyName,
-      uuid: display.uuid,
-      manufacturer: display.manufacturer,
-      modelName: display.modelName,
-      mirror: display.mirror
-    };
-  }
-};
-
-var fxOSTVDevice = {
-  id: "app://fling-player.gaiamobile.org",
-  target: "app://fling-player.gaiamobile.org/index.html",
-  factory: function(aService) {
-    Cu.import("resource://gre/modules/PresentationApp.jsm");
-    let request = new window.PresentationRequest(this.target);
-    return new PresentationApp(aService, request);
-  },
-  init: function() {
-    Services.obs.addObserver(this, "presentation-device-change", false);
-    SimpleServiceDiscovery.addExternalDiscovery(this);
-  },
-  observe: function(subject, topic, data) {
-    let device = subject.QueryInterface(Ci.nsIPresentationDevice);
-    let service = this.toService(device);
-    switch (data) {
-      case "add":
-        SimpleServiceDiscovery.addService(service);
-        break;
-      case "update":
-        SimpleServiceDiscovery.updateService(service);
-        break;
-      case "remove":
-        if(SimpleServiceDiscovery.findServiceForID(device.id)) {
-          SimpleServiceDiscovery.removeService(device.id);
-        }
-        break;
-    }
-  },
-  toService: function(device) {
-    return {
-      location: device.id,
-      target: fxOSTVDevice.target,
-      friendlyName: device.name,
-      uuid: device.id,
-      manufacturer: "Firefox OS TV",
-      modelName: "Firefox OS TV",
-    };
-  },
-  startDiscovery: function() {
-    window.navigator.mozPresentationDeviceInfo.forceDiscovery();
-
-    // need to update the lastPing time for known device.
-    window.navigator.mozPresentationDeviceInfo.getAll()
-    .then(function(devices) {
-      for (let device of devices) {
-        let service = fxOSTVDevice.toService(device);
-        SimpleServiceDiscovery.addService(service);
-      }
-    });
-  },
-  stopDiscovery: function() {
-    // do nothing
-  },
-  types: ["video/mp4", "video/webm"],
-  extensions: ["mp4", "webm"],
-};
-
-var CastingApps = {
-  _castMenuId: -1,
-  mirrorStartMenuId: -1,
-  mirrorStopMenuId: -1,
-  _blocked: null,
-  _bound: null,
-  _interval: 120 * 1000, // 120 seconds
-
-  init: function ca_init() {
-    if (!this.isCastingEnabled()) {
-      return;
-    }
-
-    // Register targets
-    SimpleServiceDiscovery.registerDevice(rokuDevice);
-
-    // MediaPlayerDevice will notify us any time the native device list changes.
-    mediaPlayerDevice.init();
-    SimpleServiceDiscovery.registerDevice(mediaPlayerDevice);
-
-    // Presentation Device will notify us any time the available device list changes.
-    if (window.PresentationRequest) {
-      fxOSTVDevice.init();
-      SimpleServiceDiscovery.registerDevice(fxOSTVDevice);
-    }
-
-    // Search for devices continuously
-    SimpleServiceDiscovery.search(this._interval);
-
-    this._castMenuId = NativeWindow.contextmenus.add(
-      Strings.browser.GetStringFromName("contextmenu.sendToDevice"),
-      this.filterCast,
-      this.handleContextMenu.bind(this)
-    );
-
-    Services.obs.addObserver(this, "Casting:Play", false);
-    Services.obs.addObserver(this, "Casting:Pause", false);
-    Services.obs.addObserver(this, "Casting:Stop", false);
-    Services.obs.addObserver(this, "Casting:Mirror", false);
-    Services.obs.addObserver(this, "ssdp-service-found", false);
-    Services.obs.addObserver(this, "ssdp-service-lost", false);
-    Services.obs.addObserver(this, "application-background", false);
-    Services.obs.addObserver(this, "application-foreground", false);
-
-    BrowserApp.deck.addEventListener("TabSelect", this, true);
-    BrowserApp.deck.addEventListener("pageshow", this, true);
-    BrowserApp.deck.addEventListener("playing", this, true);
-    BrowserApp.deck.addEventListener("ended", this, true);
-    BrowserApp.deck.addEventListener("MozAutoplayMediaBlocked", this, true);
-    // Note that the XBL binding is untrusted
-    BrowserApp.deck.addEventListener("MozNoControlsVideoBindingAttached", this, true, true);
-  },
-
-  _mirrorStarted: function(stopMirrorCallback) {
-    this.stopMirrorCallback = stopMirrorCallback;
-    NativeWindow.menu.update(this.mirrorStartMenuId, { visible: false });
-    NativeWindow.menu.update(this.mirrorStopMenuId, { visible: true });
-  },
-
-  serviceAdded: function(aService) {
-    if (this.isMirroringEnabled() && aService.mirror && this.mirrorStartMenuId == -1) {
-      this.mirrorStartMenuId = NativeWindow.menu.add({
-        name: Strings.browser.GetStringFromName("casting.mirrorTab"),
-        callback: function() {
-          let callbackFunc = function(aService) {
-            let app = SimpleServiceDiscovery.findAppForService(aService);
-            if (app) {
-              app.mirror(function() {}, window, BrowserApp.selectedTab.getViewport(), this._mirrorStarted.bind(this), window.BrowserApp.selectedBrowser.contentWindow);
-            }
-          }.bind(this);
-
-          this.prompt(callbackFunc, aService => aService.mirror);
-        }.bind(this),
-        parent: NativeWindow.menu.toolsMenuID
-      });
-
-      this.mirrorStopMenuId = NativeWindow.menu.add({
-        name: Strings.browser.GetStringFromName("casting.mirrorTabStop"),
-        callback: function() {
-          if (this.tabMirror) {
-            this.tabMirror.stop();
-            this.tabMirror = null;
-          } else if (this.stopMirrorCallback) {
-            this.stopMirrorCallback();
-            this.stopMirrorCallback = null;
-          }
-          NativeWindow.menu.update(this.mirrorStartMenuId, { visible: true });
-          NativeWindow.menu.update(this.mirrorStopMenuId, { visible: false });
-        }.bind(this),
-      });
-    }
-    if (this.mirrorStartMenuId != -1) {
-      NativeWindow.menu.update(this.mirrorStopMenuId, { visible: false });
-    }
-  },
-
-  serviceLost: function(aService) {
-    if (aService.mirror && this.mirrorStartMenuId != -1) {
-      let haveMirror = false;
-      SimpleServiceDiscovery.services.forEach(function(service) {
-        if (service.mirror) {
-          haveMirror = true;
-        }
-      });
-      if (!haveMirror) {
-        NativeWindow.menu.remove(this.mirrorStartMenuId);
-        this.mirrorStartMenuId = -1;
-      }
-    }
-  },
-
-  isCastingEnabled: function isCastingEnabled() {
-    return Services.prefs.getBoolPref("browser.casting.enabled");
-  },
-
-  isMirroringEnabled: function isMirroringEnabled() {
-    return Services.prefs.getBoolPref("browser.mirroring.enabled");
-  },
-
-  observe: function (aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "Casting:Play":
-        if (this.session && this.session.remoteMedia.status == "paused") {
-          this.session.remoteMedia.play();
-        }
-        break;
-      case "Casting:Pause":
-        if (this.session && this.session.remoteMedia.status == "started") {
-          this.session.remoteMedia.pause();
-        }
-        break;
-      case "Casting:Stop":
-        if (this.session) {
-          this.closeExternal();
-        }
-        break;
-      case "Casting:Mirror":
-        {
-          Cu.import("resource://gre/modules/TabMirror.jsm");
-          this.tabMirror = new TabMirror(aData, window);
-          NativeWindow.menu.update(this.mirrorStartMenuId, { visible: false });
-          NativeWindow.menu.update(this.mirrorStopMenuId, { visible: true });
-        }
-        break;
-      case "ssdp-service-found":
-        this.serviceAdded(SimpleServiceDiscovery.findServiceForID(aData));
-        break;
-      case "ssdp-service-lost":
-        this.serviceLost(SimpleServiceDiscovery.findServiceForID(aData));
-        break;
-      case "application-background":
-        // Turn off polling while in the background
-        this._interval = SimpleServiceDiscovery.search(0);
-        SimpleServiceDiscovery.stopSearch();
-        break;
-      case "application-foreground":
-        // Turn polling on when app comes back to foreground
-        SimpleServiceDiscovery.search(this._interval);
-        break;
-    }
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "TabSelect": {
-        let tab = BrowserApp.getTabForBrowser(aEvent.target);
-        this._updatePageActionForTab(tab, aEvent);
-        break;
-      }
-      case "pageshow": {
-        let tab = BrowserApp.getTabForWindow(aEvent.originalTarget.defaultView);
-        this._updatePageActionForTab(tab, aEvent);
-        break;
-      }
-      case "playing":
-      case "ended": {
-        let video = aEvent.target;
-        if (video instanceof HTMLVideoElement) {
-          // If playing, send the <video>, but if ended we send nothing to shutdown the pageaction
-          this._updatePageActionForVideo(aEvent.type === "playing" ? video : null);
-        }
-        break;
-      }
-      case "MozAutoplayMediaBlocked": {
-        if (this._bound && this._bound.has(aEvent.target)) {
-          aEvent.target.dispatchEvent(new CustomEvent("MozNoControlsBlockedVideo"));
-        } else {
-          if (!this._blocked) {
-            this._blocked = new WeakMap;
-          }
-          this._blocked.set(aEvent.target, true);
-        }
-        break;
-      }
-      case "MozNoControlsVideoBindingAttached": {
-        if (!this._bound) {
-          this._bound = new WeakMap;
-        }
-        this._bound.set(aEvent.target, true);
-        if (this._blocked && this._blocked.has(aEvent.target)) {
-          this._blocked.delete(aEvent.target);
-          aEvent.target.dispatchEvent(new CustomEvent("MozNoControlsBlockedVideo"));
-        }
-        break;
-      }
-    }
-  },
-
-  _sendEventToVideo: function _sendEventToVideo(aElement, aData) {
-    let event = aElement.ownerDocument.createEvent("CustomEvent");
-    event.initCustomEvent("media-videoCasting", false, true, JSON.stringify(aData));
-    aElement.dispatchEvent(event);
-  },
-
-  handleVideoBindingAttached: function handleVideoBindingAttached(aTab, aEvent) {
-    // Let's figure out if we have everything needed to cast a video. The binding
-    // defaults to |false| so we only need to send an event if |true|.
-    let video = aEvent.target;
-    if (!(video instanceof HTMLVideoElement)) {
-      return;
-    }
-
-    if (SimpleServiceDiscovery.services.length == 0) {
-      return;
-    }
-
-    this.getVideo(video, 0, 0, (aBundle) => {
-      // Let the binding know casting is allowed
-      if (aBundle) {
-        this._sendEventToVideo(aBundle.element, { allow: true });
-      }
-    });
-  },
-
-  handleVideoBindingCast: function handleVideoBindingCast(aTab, aEvent) {
-    // The binding wants to start a casting session
-    let video = aEvent.target;
-    if (!(video instanceof HTMLVideoElement)) {
-      return;
-    }
-
-    // Close an existing session first. closeExternal has checks for an exsting
-    // session and handles remote and video binding shutdown.
-    this.closeExternal();
-
-    // Start the new session
-    UITelemetry.addEvent("cast.1", "button", null);
-    this.openExternal(video, 0, 0);
-  },
-
-  makeURI: function makeURI(aURL, aOriginCharset, aBaseURI) {
-    return Services.io.newURI(aURL, aOriginCharset, aBaseURI);
-  },
-
-  allowableExtension: function(aURI, aExtensions) {
-    return (aURI instanceof Ci.nsIURL) && aExtensions.indexOf(aURI.fileExtension) != -1;
-  },
-
-  allowableMimeType: function(aType, aTypes) {
-    return aTypes.indexOf(aType) != -1;
-  },
-
-  // This method will look at the aElement (or try to find a video at aX, aY) that has
-  // a castable source. If found, aCallback will be called with a JSON meta bundle. If
-  // no castable source was found, aCallback is called with null.
-  getVideo: function(aElement, aX, aY, aCallback) {
-    let extensions = SimpleServiceDiscovery.getSupportedExtensions();
-    let types = SimpleServiceDiscovery.getSupportedMimeTypes();
-
-    // Fast path: Is the given element a video element?
-    if (aElement instanceof HTMLVideoElement) {
-      // If we found a video element, no need to look further, even if no
-      // castable video source is found.
-      this._getVideo(aElement, types, extensions, aCallback);
-      return;
-    }
-
-    // Maybe this is an overlay, with the video element under it.
-    // Use the (x, y) location to guess at a <video> element.
-
-    // The context menu system will keep walking up the DOM giving us a chance
-    // to find an element we match. When it hits <html> things can go BOOM.
-    try {
-      let elements = aElement.ownerDocument.querySelectorAll("video");
-      for (let element of elements) {
-        // Look for a video element contained in the overlay bounds
-        let rect = element.getBoundingClientRect();
-        if (aY >= rect.top && aX >= rect.left && aY <= rect.bottom && aX <= rect.right) {
-          // Once we find a <video> under the overlay, we check it and exit.
-          this._getVideo(element, types, extensions, aCallback);
-          return;
-        }
-      }
-    } catch(e) {}
-  },
-
-  _getContentTypeForURI: function(aURI, aElement, aCallback) {
-    let channel;
-    try {
-      let secFlags = Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS;
-      if (aElement.crossOrigin) {
-        secFlags = Ci.nsILoadInfo.SEC_REQUIRE_CORS_DATA_INHERITS;
-        if (aElement.crossOrigin === "use-credentials") {
-          secFlags |= Ci.nsILoadInfo.SEC_COOKIES_INCLUDE;
-        }
-      }
-      channel = NetUtil.newChannel({
-        uri: aURI,
-        loadingNode: aElement,
-        securityFlags: secFlags,
-        contentPolicyType: Ci.nsIContentPolicy.TYPE_INTERNAL_VIDEO
-      });
-    } catch(e) {
-     aCallback(null);
-     return;
-    }
-
-    let listener = {
-      onStartRequest: function(request, context) {
-        switch (channel.responseStatus) {
-          case 301:
-          case 302:
-          case 303:
-            request.cancel(0);
-            let location = channel.getResponseHeader("Location");
-            CastingApps._getContentTypeForURI(CastingApps.makeURI(location), aElement, aCallback);
-            break;
-          default:
-            aCallback(channel.contentType);
-            request.cancel(0);
-            break;
-        }
-      },
-      onStopRequest: function(request, context, statusCode)  {},
-      onDataAvailable: function(request, context, stream, offset, count) {}
-    };
-
-    if (channel) {
-      channel.asyncOpen2(listener);
-    } else {
-      aCallback(null);
-    }
-  },
-
-  // Because this method uses a callback, make sure we return ASAP if we know
-  // we have a castable video source.
-  _getVideo: function(aElement, aTypes, aExtensions, aCallback) {
-    // Keep a list of URIs we need for an async mimetype check
-    let asyncURIs = [];
-
-    // Grab the poster attribute from the <video>
-    let posterURL = aElement.poster;
-
-    // First, look to see if the <video> has a src attribute
-    let sourceURL = aElement.src;
-
-    // If empty, try the currentSrc
-    if (!sourceURL) {
-      sourceURL = aElement.currentSrc;
-    }
-
-    if (sourceURL) {
-      // Use the file extension to guess the mime type
-      let sourceURI = this.makeURI(sourceURL, null, this.makeURI(aElement.baseURI));
-      if (this.allowableExtension(sourceURI, aExtensions)) {
-        aCallback({ element: aElement, source: sourceURI.spec, poster: posterURL, sourceURI: sourceURI});
-        return;
-      }
-
-      if (aElement.type) {
-        // Fast sync check
-        if (this.allowableMimeType(aElement.type, aTypes)) {
-          aCallback({ element: aElement, source: sourceURI.spec, poster: posterURL, sourceURI: sourceURI, type: aElement.type });
-          return;
-        }
-      }
-
-      // Delay the async check until we sync scan all possible URIs
-      asyncURIs.push(sourceURI);
-    }
-
-    // Next, look to see if there is a <source> child element that meets
-    // our needs
-    let sourceNodes = aElement.getElementsByTagName("source");
-    for (let sourceNode of sourceNodes) {
-      let sourceURI = this.makeURI(sourceNode.src, null, this.makeURI(sourceNode.baseURI));
-
-      // Using the type attribute is our ideal way to guess the mime type. Otherwise,
-      // fallback to using the file extension to guess the mime type
-      if (this.allowableExtension(sourceURI, aExtensions)) {
-        aCallback({ element: aElement, source: sourceURI.spec, poster: posterURL, sourceURI: sourceURI, type: sourceNode.type });
-        return;
-      }
-
-      if (sourceNode.type) {
-        // Fast sync check
-        if (this.allowableMimeType(sourceNode.type, aTypes)) {
-          aCallback({ element: aElement, source: sourceURI.spec, poster: posterURL, sourceURI: sourceURI, type: sourceNode.type });
-          return;
-        }
-      }
-
-      // Delay the async check until we sync scan all possible URIs
-      asyncURIs.push(sourceURI);
-    }
-
-    // Helper method that walks the array of possible URIs, fetching the mimetype as we go.
-    // As soon as we find a good sourceURL, avoid firing the callback any further
-    var _getContentTypeForURIs = (aURIs) => {
-      // Do an async fetch to figure out the mimetype of the source video
-      let sourceURI = aURIs.pop();
-      this._getContentTypeForURI(sourceURI, aElement, (aType) => {
-        if (this.allowableMimeType(aType, aTypes)) {
-          // We found a supported mimetype.
-          aCallback({ element: aElement, source: sourceURI.spec, poster: posterURL, sourceURI: sourceURI, type: aType });
-        } else {
-          // This URI was not a supported mimetype, so let's try the next, if we have more.
-          if (aURIs.length > 0) {
-            _getContentTypeForURIs(aURIs);
-          } else {
-            // We were not able to find a supported mimetype.
-            aCallback(null);
-          }
-        }
-      });
-    }
-
-    // If we didn't find a good URI directly, let's look using async methods.
-    if (asyncURIs.length > 0) {
-      _getContentTypeForURIs(asyncURIs);
-    }
-  },
-
-  // This code depends on handleVideoBindingAttached setting mozAllowCasting
-  // so we can quickly figure out if the video is castable
-  isVideoCastable: function(aElement, aX, aY) {
-    // Use the flag set when the <video> binding was created as the check
-    if (aElement instanceof HTMLVideoElement) {
-      return aElement.mozAllowCasting;
-    }
-
-    // This is called by the context menu system and the system will keep
-    // walking up the DOM giving us a chance to find an element we match.
-    // When it hits <html> things can go BOOM.
-    try {
-      // Maybe this is an overlay, with the video element under it
-      // Use the (x, y) location to guess at a <video> element
-      let elements = aElement.ownerDocument.querySelectorAll("video");
-      for (let element of elements) {
-        // Look for a video element contained in the overlay bounds
-        let rect = element.getBoundingClientRect();
-        if (aY >= rect.top && aX >= rect.left && aY <= rect.bottom && aX <= rect.right) {
-          // Use the flag set when the <video> binding was created as the check
-          return element.mozAllowCasting;
-        }
-      }
-    } catch(e) {}
-
-    return false;
-  },
-
-  filterCast: {
-    matches: function(aElement, aX, aY) {
-      // This behavior matches the pageaction: As long as a video is castable,
-      // we can cast it, even if it's already being cast to a device.
-      if (SimpleServiceDiscovery.services.length == 0)
-        return false;
-      return CastingApps.isVideoCastable(aElement, aX, aY);
-    }
-  },
-
-  pageAction: {
-    click: function() {
-      // Since this is a pageaction, we use the selected browser
-      let browser = BrowserApp.selectedBrowser;
-      if (!browser) {
-        return;
-      }
-
-      // Look for a castable <video> that is playing, and start casting it
-      let videos = browser.contentDocument.querySelectorAll("video");
-      for (let video of videos) {
-        if (!video.paused && video.mozAllowCasting) {
-          UITelemetry.addEvent("cast.1", "pageaction", null);
-          CastingApps.openExternal(video, 0, 0);
-          return;
-        }
-      }
-    }
-  },
-
-  _findCastableVideo: function _findCastableVideo(aBrowser) {
-      if (!aBrowser) {
-        return null;
-      }
-
-      // Scan for a <video> being actively cast. Also look for a castable <video>
-      // on the page.
-      let castableVideo = null;
-      let videos = aBrowser.contentDocument.querySelectorAll("video");
-      for (let video of videos) {
-        if (video.mozIsCasting) {
-          // This <video> is cast-active. Break out of loop.
-          return video;
-        }
-
-        if (!video.paused && video.mozAllowCasting) {
-          // This <video> is cast-ready. Keep looking so cast-active could be found.
-          castableVideo = video;
-        }
-      }
-
-      // Could be null
-      return castableVideo;
-  },
-
-  _updatePageActionForTab: function _updatePageActionForTab(aTab, aEvent) {
-    // We only care about events on the selected tab
-    if (aTab != BrowserApp.selectedTab) {
-      return;
-    }
-
-    // Update the page action, scanning for a castable <video>
-    this._updatePageAction();
-  },
-
-  _updatePageActionForVideo: function _updatePageActionForVideo(aVideo) {
-    this._updatePageAction(aVideo);
-  },
-
-  _updatePageAction: function _updatePageAction(aVideo) {
-    // Remove any exising pageaction first, in case state changes or we don't have
-    // a castable video
-    if (this.pageAction.id) {
-      PageActions.remove(this.pageAction.id);
-      delete this.pageAction.id;
-    }
-
-    if (!aVideo) {
-      aVideo = this._findCastableVideo(BrowserApp.selectedBrowser);
-      if (!aVideo) {
-        return;
-      }
-    }
-
-    // We only show pageactions if the <video> is from the selected tab
-    if (BrowserApp.selectedTab != BrowserApp.getTabForWindow(aVideo.ownerDocument.defaultView.top)) {
-      return;
-    }
-
-    // We check for two state here:
-    // 1. The video is actively being cast
-    // 2. The video is allowed to be cast and is currently playing
-    // Both states have the same action: Show the cast page action
-    if (aVideo.mozIsCasting) {
-      this.pageAction.id = PageActions.add({
-        title: Strings.browser.GetStringFromName("contextmenu.sendToDevice"),
-        icon: "drawable://casting_active",
-        clickCallback: this.pageAction.click,
-        important: true
-      });
-    } else if (aVideo.mozAllowCasting) {
-      this.pageAction.id = PageActions.add({
-        title: Strings.browser.GetStringFromName("contextmenu.sendToDevice"),
-        icon: "drawable://casting",
-        clickCallback: this.pageAction.click,
-        important: true
-      });
-    }
-  },
-
-  prompt: function(aCallback, aFilterFunc) {
-    let items = [];
-    let filteredServices = [];
-    SimpleServiceDiscovery.services.forEach(function(aService) {
-      let item = {
-        label: aService.friendlyName,
-        selected: false
-      };
-      if (!aFilterFunc || aFilterFunc(aService)) {
-        filteredServices.push(aService);
-        items.push(item);
-      }
-    });
-
-    if (items.length == 0) {
-      return;
-    }
-
-    let prompt = new Prompt({
-      title: Strings.browser.GetStringFromName("casting.sendToDevice")
-    }).setSingleChoiceItems(items).show(function(data) {
-      let selected = data.button;
-      let service = selected == -1 ? null : filteredServices[selected];
-      if (aCallback)
-        aCallback(service);
-    });
-  },
-
-  handleContextMenu: function(aElement, aX, aY) {
-    UITelemetry.addEvent("action.1", "contextmenu", null, "web_cast");
-    UITelemetry.addEvent("cast.1", "contextmenu", null);
-    this.openExternal(aElement, aX, aY);
-  },
-
-  openExternal: function(aElement, aX, aY) {
-    // Start a second screen media service
-    this.getVideo(aElement, aX, aY, this._openExternal.bind(this));
-  },
-
-  _openExternal: function(aVideo) {
-    if (!aVideo) {
-      return;
-    }
-
-    function filterFunc(aService) {
-      return this.allowableExtension(aVideo.sourceURI, aService.extensions) || this.allowableMimeType(aVideo.type, aService.types);
-    }
-
-    this.prompt(function(aService) {
-      if (!aService)
-        return;
-
-      // Make sure we have a player app for the given service
-      let app = SimpleServiceDiscovery.findAppForService(aService);
-      if (!app)
-        return;
-
-      if (aVideo.element) {
-        aVideo.title = aVideo.element.ownerDocument.defaultView.top.document.title;
-
-        // If the video is currently playing on the device, pause it
-        if (!aVideo.element.paused) {
-          aVideo.element.pause();
-        }
-      }
-
-      app.stop(function() {
-        app.start(function(aStarted) {
-          if (!aStarted) {
-            dump("CastingApps: Unable to start app");
-            return;
-          }
-
-          app.remoteMedia(function(aRemoteMedia) {
-            if (!aRemoteMedia) {
-              dump("CastingApps: Failed to create remotemedia");
-              return;
-            }
-
-            this.session = {
-              service: aService,
-              app: app,
-              remoteMedia: aRemoteMedia,
-              data: {
-                title: aVideo.title,
-                source: aVideo.source,
-                poster: aVideo.poster
-              },
-              videoRef: Cu.getWeakReference(aVideo.element)
-            };
-          }.bind(this), this);
-        }.bind(this));
-      }.bind(this));
-    }.bind(this), filterFunc.bind(this));
-  },
-
-  closeExternal: function() {
-    if (!this.session) {
-      return;
-    }
-
-    this.session.remoteMedia.shutdown();
-    this._shutdown();
-  },
-
-  _shutdown: function() {
-    if (!this.session) {
-      return;
-    }
-
-    this.session.app.stop();
-    let video = this.session.videoRef.get();
-    if (video) {
-      this._sendEventToVideo(video, { active: false });
-      this._updatePageAction();
-    }
-
-    delete this.session;
-  },
-
-  // RemoteMedia callback API methods
-  onRemoteMediaStart: function(aRemoteMedia) {
-    if (!this.session) {
-      return;
-    }
-
-    aRemoteMedia.load(this.session.data);
-    Messaging.sendRequest({ type: "Casting:Started", device: this.session.service.friendlyName });
-
-    let video = this.session.videoRef.get();
-    if (video) {
-      this._sendEventToVideo(video, { active: true });
-      this._updatePageAction(video);
-    }
-  },
-
-  onRemoteMediaStop: function(aRemoteMedia) {
-    Messaging.sendRequest({ type: "Casting:Stopped" });
-    this._shutdown();
-  },
-
-  onRemoteMediaStatus: function(aRemoteMedia) {
-    if (!this.session) {
-      return;
-    }
-
-    let status = aRemoteMedia.status;
-    switch (status) {
-      case "started":
-        Messaging.sendRequest({ type: "Casting:Playing" });
-        break;
-      case "paused":
-        Messaging.sendRequest({ type: "Casting:Paused" });
-        break;
-      case "completed":
-        this.closeExternal();
-        break;
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/ConsoleAPI.js b/mobile/android/chrome/content/ConsoleAPI.js
deleted file mode 100644
index 6ba4c1195..000000000
--- a/mobile/android/chrome/content/ConsoleAPI.js
+++ /dev/null
@@ -1,96 +0,0 @@
-/* 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/. */
-"use strict";
-
-var ConsoleAPI = {
-  observe: function observe(aMessage, aTopic, aData) {
-    aMessage = aMessage.wrappedJSObject;
-
-    let mappedArguments = Array.map(aMessage.arguments, this.formatResult, this);
-    let joinedArguments = Array.join(mappedArguments, " ");
-
-    if (aMessage.level == "error" || aMessage.level == "warn") {
-      let flag = (aMessage.level == "error" ? Ci.nsIScriptError.errorFlag : Ci.nsIScriptError.warningFlag);
-      let consoleMsg = Cc["@mozilla.org/scripterror;1"].createInstance(Ci.nsIScriptError);
-      consoleMsg.init(joinedArguments, null, null, 0, 0, flag, "content javascript");
-      Services.console.logMessage(consoleMsg);
-    } else if (aMessage.level == "trace") {
-      let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-      let args = aMessage.arguments;
-      let filename = this.abbreviateSourceURL(args[0].filename);
-      let functionName = args[0].functionName || bundle.GetStringFromName("stacktrace.anonymousFunction");
-      let lineNumber = args[0].lineNumber;
-
-      let body = bundle.formatStringFromName("stacktrace.outputMessage", [filename, functionName, lineNumber], 3);
-      body += "\n";
-      args.forEach(function(aFrame) {
-        let functionName = aFrame.functionName || bundle.GetStringFromName("stacktrace.anonymousFunction");
-        body += "  " + aFrame.filename + " :: " + functionName + " :: " + aFrame.lineNumber + "\n";
-      });
-
-      Services.console.logStringMessage(body);
-    } else if (aMessage.level == "time" && aMessage.arguments) {
-      let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-      let body = bundle.formatStringFromName("timer.start", [aMessage.arguments.name], 1);
-      Services.console.logStringMessage(body);
-    } else if (aMessage.level == "timeEnd" && aMessage.arguments) {
-      let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
-      let body = bundle.formatStringFromName("timer.end", [aMessage.arguments.name, aMessage.arguments.duration], 2);
-      Services.console.logStringMessage(body);
-    } else if (["group", "groupCollapsed", "groupEnd"].indexOf(aMessage.level) != -1) {
-      // Do nothing yet
-    } else {
-      Services.console.logStringMessage(joinedArguments);
-    }
-  },
-
-  getResultType: function getResultType(aResult) {
-    let type = aResult === null ? "null" : typeof aResult;
-    if (type == "object" && aResult.constructor && aResult.constructor.name)
-      type = aResult.constructor.name;
-    return type.toLowerCase();
-  },
-
-  formatResult: function formatResult(aResult) {
-    let output = "";
-    let type = this.getResultType(aResult);
-    switch (type) {
-      case "string":
-      case "boolean":
-      case "date":
-      case "error":
-      case "number":
-      case "regexp":
-        output = aResult.toString();
-        break;
-      case "null":
-      case "undefined":
-        output = type;
-        break;
-      default:
-        output = aResult.toString();
-        break;
-    }
-
-    return output;
-  },
-
-  abbreviateSourceURL: function abbreviateSourceURL(aSourceURL) {
-    // Remove any query parameters.
-    let hookIndex = aSourceURL.indexOf("?");
-    if (hookIndex > -1)
-      aSourceURL = aSourceURL.substring(0, hookIndex);
-
-    // Remove a trailing "/".
-    if (aSourceURL[aSourceURL.length - 1] == "/")
-      aSourceURL = aSourceURL.substring(0, aSourceURL.length - 1);
-
-    // Remove all but the last path component.
-    let slashIndex = aSourceURL.lastIndexOf("/");
-    if (slashIndex > -1)
-      aSourceURL = aSourceURL.substring(slashIndex + 1);
-
-    return aSourceURL;
-  }
-};
diff --git a/mobile/android/chrome/content/EmbedRT.js b/mobile/android/chrome/content/EmbedRT.js
deleted file mode 100644
index 8e35a3b63..000000000
--- a/mobile/android/chrome/content/EmbedRT.js
+++ /dev/null
@@ -1,82 +0,0 @@
-/* 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/. */
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "ConsoleAPI",
-                                  "resource://gre/modules/Console.jsm");
-
-/*
- * Collection of methods and features specific to using a GeckoView instance.
- * The code is isolated from browser.js for code size and performance reasons.
- */
-var EmbedRT = {
-  _scopes: {},
-
-  observe: function(subject, topic, data) {
-    switch(topic) {
-      case "GeckoView:ImportScript":
-        this.importScript(data);
-        break;
-    }
-  },
-
-  /*
-   * Loads a script file into a sandbox and calls an optional load function
-   */
-  importScript: function(scriptURL) {
-    if (scriptURL in this._scopes) {
-      return;
-    }
-
-    let principal = Cc["@mozilla.org/systemprincipal;1"].createInstance(Ci.nsIPrincipal);
-
-    let sandbox = new Cu.Sandbox(principal,
-      {
-        sandboxName: scriptURL,
-        wantGlobalProperties: ["indexedDB"]
-      }
-    );
-
-    sandbox["console"] = new ConsoleAPI({ consoleID: "script/" + scriptURL });
-    sandbox["GeckoView"] = {
-      sendRequest: function(data) {
-        if (!data) {
-          throw new Error("Invalid parameter: 'data' can't be null.");
-        }
-
-        let message = { type: "GeckoView:Message", data: data };
-        Messaging.sendRequest(message);
-      },
-      sendRequestForResult: function(data) {
-        if (!data) {
-          throw new Error("Invalid parameter: 'data' can't be null.");
-        }
-
-        let message = { type: "GeckoView:Message", data: data };
-        return Messaging.sendRequestForResult(message);
-      }
-    };
-
-    // As we don't want our caller to control the JS version used for the
-    // script file, we run loadSubScript within the context of the
-    // sandbox with the latest JS version set explicitly.
-    sandbox.__SCRIPT_URI_SPEC__ = scriptURL;
-    Cu.evalInSandbox("Components.classes['@mozilla.org/moz/jssubscript-loader;1'].createInstance(Components.interfaces.mozIJSSubScriptLoader).loadSubScript(__SCRIPT_URI_SPEC__);", sandbox, "ECMAv5");
-
-    this._scopes[scriptURL] = sandbox;
-
-    if ("load" in sandbox) {
-      let params = {
-        window: window,
-        resourceURI: scriptURL,
-      };
-
-      try {
-        sandbox["load"](params);
-      } catch(e) {
-        dump("Exception calling 'load' method in script: " + scriptURL + "\n" + e);
-      }
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/FeedHandler.js b/mobile/android/chrome/content/FeedHandler.js
deleted file mode 100644
index 91d73ee8d..000000000
--- a/mobile/android/chrome/content/FeedHandler.js
+++ /dev/null
@@ -1,120 +0,0 @@
-/* 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/. */
-"use strict";
-
-var FeedHandler = {
-  PREF_CONTENTHANDLERS_BRANCH: "browser.contentHandlers.types.",
-  TYPE_MAYBE_FEED: "application/vnd.mozilla.maybe.feed",
-
-  _contentTypes: null,
-
-  getContentHandlers: function fh_getContentHandlers(contentType) {
-    if (!this._contentTypes)
-      this.loadContentHandlers();
-
-    if (!(contentType in this._contentTypes))
-      return [];
-
-    return this._contentTypes[contentType];
-  },
-  
-  loadContentHandlers: function fh_loadContentHandlers() {
-    this._contentTypes = {};
-
-    let kids = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH).getChildList("");
-
-    // First get the numbers of the providers by getting all ###.uri prefs
-    let nums = [];
-    for (let i = 0; i < kids.length; i++) {
-      let match = /^(\d+)\.uri$/.exec(kids[i]);
-      if (!match)
-        continue;
-      else
-        nums.push(match[1]);
-    }
-
-    // Sort them, to get them back in order
-    nums.sort(function(a, b) { return a - b; });
-
-    // Now register them
-    for (let i = 0; i < nums.length; i++) {
-      let branch = Services.prefs.getBranch(this.PREF_CONTENTHANDLERS_BRANCH + nums[i] + ".");
-      let vals = branch.getChildList("");
-      if (vals.length == 0)
-        return;
-
-      try {
-        let type = branch.getCharPref("type");
-        let uri = branch.getComplexValue("uri", Ci.nsIPrefLocalizedString).data;
-        let title = branch.getComplexValue("title", Ci.nsIPrefLocalizedString).data;
-
-        if (!(type in this._contentTypes))
-          this._contentTypes[type] = [];
-        this._contentTypes[type].push({ contentType: type, uri: uri, name: title });
-      }
-      catch(ex) {}
-    }
-  },
-
-  observe: function fh_observe(aSubject, aTopic, aData) {
-    if (aTopic === "Feeds:Subscribe") {
-      let args = JSON.parse(aData);
-      let tab = BrowserApp.getTabForId(args.tabId);
-      if (!tab)
-        return;
-
-      let browser = tab.browser;
-      let feeds = browser.feeds;
-      if (feeds == null)
-        return;
-
-      // First, let's decide on which feed to subscribe
-      let feedIndex = -1;
-      if (feeds.length > 1) {
-        let p = new Prompt({
-          window: browser.contentWindow,
-          title: Strings.browser.GetStringFromName("feedHandler.chooseFeed")
-        }).setSingleChoiceItems(feeds.map(function(feed) {
-          return { label: feed.title || feed.href }
-        })).show((function(data) {
-          feedIndex = data.button;
-          if (feedIndex == -1)
-            return;
-
-          this.loadFeed(feeds[feedIndex], browser);
-        }).bind(this));
-        return;
-      }
-
-      this.loadFeed(feeds[0], browser);
-    }
-  },
-
-  loadFeed: function fh_loadFeed(aFeed, aBrowser) {
-    let feedURL = aFeed.href;
-
-    // Next, we decide on which service to send the feed
-    let handlers = this.getContentHandlers(this.TYPE_MAYBE_FEED);
-    if (handlers.length == 0)
-      return;
-
-    // JSON for Prompt
-    let p = new Prompt({
-      window: aBrowser.contentWindow,
-      title: Strings.browser.GetStringFromName("feedHandler.subscribeWith")
-    }).setSingleChoiceItems(handlers.map(function(handler) {
-      return { label: handler.name };
-    })).show(function(data) {
-      if (data.button == -1)
-        return;
-
-      // Merge the handler URL and the feed URL
-      let readerURL = handlers[data.button].uri;
-      readerURL = readerURL.replace(/%s/gi, encodeURIComponent(feedURL));
-
-      // Open the resultant URL in a new tab
-      BrowserApp.addTab(readerURL, { parentId: BrowserApp.selectedTab.id });
-    });
-  }
-};
diff --git a/mobile/android/chrome/content/Feedback.js b/mobile/android/chrome/content/Feedback.js
deleted file mode 100644
index 8727c46c3..000000000
--- a/mobile/android/chrome/content/Feedback.js
+++ /dev/null
@@ -1,64 +0,0 @@
-/* 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/. */
-"use strict";
-
-var Feedback = {
-
-  get _feedbackURL() {
-    delete this._feedbackURL;
-    return this._feedbackURL = Services.urlFormatter.formatURLPref("app.feedbackURL");
-  },
-
-  observe: function(aMessage, aTopic, aData) {
-    if (aTopic !== "Feedback:Show") {
-      return;
-    }
-
-    // Don't prompt for feedback in distribution builds.
-    try {
-      Services.prefs.getCharPref("distribution.id");
-      return;
-    } catch (e) {}
-
-    let url = this._feedbackURL;
-    let browser = BrowserApp.selectOrAddTab(url, { parentId: BrowserApp.selectedTab.id }).browser;
-
-    browser.addEventListener("FeedbackClose", this, false, true);
-    browser.addEventListener("FeedbackMaybeLater", this, false, true);
-
-    // Dispatch a custom event to the page content when feedback is prompted by the browser.
-    // This will be used by the page to determine it's being loaded directly by the browser,
-    // instead of by the user visiting the page, e.g. through browser history.
-    function loadListener(event) {
-      browser.removeEventListener("DOMContentLoaded", loadListener, false);
-      browser.contentDocument.dispatchEvent(new CustomEvent("FeedbackPrompted"));
-    }
-    browser.addEventListener("DOMContentLoaded", loadListener, false);
-  },
-
-  handleEvent: function(event) {
-    if (!this._isAllowed(event.target)) {
-      return;
-    }
-
-    switch (event.type) {
-      case "FeedbackClose":
-        // Do nothing.
-        break;
-
-      case "FeedbackMaybeLater":
-        Messaging.sendRequest({ type: "Feedback:MaybeLater" });
-        break;
-    }
-
-    let win = event.target.ownerDocument.defaultView.top;
-    BrowserApp.closeTab(BrowserApp.getTabForWindow(win));
-  },
-
-  _isAllowed: function(node) {
-    let uri = node.ownerDocument.documentURIObject;
-    let feedbackURI = Services.io.newURI(this._feedbackURL, null, null);
-    return uri.prePath === feedbackURI.prePath;
-  }
-};
diff --git a/mobile/android/chrome/content/FindHelper.js b/mobile/android/chrome/content/FindHelper.js
deleted file mode 100644
index 037b182d6..000000000
--- a/mobile/android/chrome/content/FindHelper.js
+++ /dev/null
@@ -1,197 +0,0 @@
-/* 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/. */
-"use strict";
-
-var FindHelper = {
-  _finder: null,
-  _targetTab: null,
-  _initialViewport: null,
-  _viewportChanged: false,
-  _result: null,
-
-  // Start of nsIObserver implementation.
-
-  observe: function(aMessage, aTopic, aData) {
-    switch(aTopic) {
-      case "FindInPage:Opened": {
-        this._findOpened();
-        break;
-      }
-
-      case "Tab:Selected": {
-        // Allow for page switching.
-        this._uninit();
-        break;
-      }
-
-      case "FindInPage:Closed":
-        this._uninit();
-        this._findClosed();
-        break;
-    }
-  },
-
-  /**
-   * When the FindInPageBar opens/ becomes visible, it's time to:
-   * 1. Add listeners for other message types sent from the FindInPageBar
-   * 2. initialize the Finder instance, if necessary.
-   */
-  _findOpened: function() {
-    Messaging.addListener(data => this.doFind(data), "FindInPage:Find");
-    Messaging.addListener(data => this.findAgain(data, false), "FindInPage:Next");
-    Messaging.addListener(data => this.findAgain(data, true), "FindInPage:Prev");
-
-    // Initialize the finder component for the current page by performing a fake find.
-    this._init();
-    this._finder.requestMatchesCount("");
-  },
-
-  /**
-   * Fetch the Finder instance from the active tabs' browser and start tracking
-   * the active viewport.
-   */
-  _init: function() {
-    // If there's no find in progress, start one.
-    if (this._finder) {
-      return;
-    }
-
-    this._targetTab = BrowserApp.selectedTab;
-    try {
-      this._finder = this._targetTab.browser.finder;
-    } catch (e) {
-      throw new Error("FindHelper: " + e + "\n" +
-        "JS stack: \n" + (e.stack || Components.stack.formattedStack));
-    }
-
-    this._finder.addResultListener(this);
-    this._initialViewport = JSON.stringify(this._targetTab.getViewport());
-    this._viewportChanged = false;
-  },
-
-  /**
-   * Detach from the Finder instance (so stop listening for messages) and stop
-   * tracking the active viewport.
-   */
-  _uninit: function() {
-    // If there's no find in progress, there's nothing to clean up.
-    if (!this._finder) {
-      return;
-    }
-
-    this._finder.removeSelection();
-    this._finder.removeResultListener(this);
-    this._finder = null;
-    this._targetTab = null;
-    this._initialViewport = null;
-    this._viewportChanged = false;
-  },
-
-  /**
-   * When the FindInPageBar closes, it's time to stop listening for its messages.
-   */
-  _findClosed: function() {
-    Messaging.removeListener("FindInPage:Find");
-    Messaging.removeListener("FindInPage:Next");
-    Messaging.removeListener("FindInPage:Prev");
-  },
-
-  /**
-   * Start an asynchronous find-in-page operation, using the current Finder
-   * instance and request to count the amount of matches.
-   * If no Finder instance is currently active, we'll lazily initialize it here.
-   *
-   * @param  {String} searchString Word to search for in the current document
-   * @return {Object}              Echo of the current find action
-   */
-  doFind: function(searchString) {
-    if (!this._finder) {
-      this._init();
-    }
-
-    this._finder.fastFind(searchString, false);
-    return { searchString, findBackwards: false };
-  },
-
-  /**
-   * Restart the same find-in-page operation as before via `doFind()`. If we
-   * haven't called `doFind()`, we simply kick off a regular find.
-   *
-   * @param  {String}  searchString  Word to search for in the current document
-   * @param  {Boolean} findBackwards Direction to search in
-   * @return {Object}                Echo of the current find action
-   */
-  findAgain: function(searchString, findBackwards) {
-    // This always happens if the user taps next/previous after re-opening the
-    // search bar, and not only forces _init() but also an initial fastFind(STRING)
-    // before any findAgain(DIRECTION).
-    if (!this._finder) {
-      return this.doFind(searchString);
-    }
-
-    this._finder.findAgain(findBackwards, false, false);
-    return { searchString, findBackwards };
-  },
-
-  // Start of Finder.jsm listener implementation.
-
-  /**
-   * Pass along the count results to FindInPageBar for display. The result that
-   * is sent to the FindInPageBar is augmented with the current find-in-page count
-   * limit.
-   *
-   * @param {Object} result Result coming from the Finder instance that contains
-   *                        the following properties:
-   *                        - {Number} total   The total amount of matches found
-   *                        - {Number} current The index of current found range
-   *                                           in the document
-   */
-  onMatchesCountResult: function(result) {
-    this._result = result;
-
-    Messaging.sendRequest(Object.assign({
-      type: "FindInPage:MatchesCountResult"
-    }, this._result));
-  },
-
-  /**
-   * When a find-in-page action finishes, this method is invoked. This is mainly
-   * used at the moment to detect if the current viewport has changed, which might
-   * be indicated by not finding a string in the current page.
-   *
-   * @param {Object} aData A dictionary, representing the find result, which
-   *                       contains the following properties:
-   *                       - {String}  searchString  Word that was searched for
-   *                                                 in the current document
-   *                       - {Number}  result        One of the following
-   *                                                 Ci.nsITypeAheadFind.* result
-   *                                                 indicators: FIND_FOUND,
-   *                                                 FIND_NOTFOUND, FIND_WRAPPED,
-   *                                                 FIND_PENDING
-   *                       - {Boolean} findBackwards Whether the search direction
-   *                                                 was backwards
-   *                       - {Boolean} findAgain     Whether the previous search
-   *                                                 was repeated
-   *                       - {Boolean} drawOutline   Whether we may (re-)draw the
-   *                                                 outline of a hyperlink
-   *                       - {Boolean} linksOnly     Whether links-only mode was
-   *                                                 active
-   */
-  onFindResult: function(aData) {
-    if (aData.result == Ci.nsITypeAheadFind.FIND_NOTFOUND) {
-      if (this._viewportChanged) {
-        if (this._targetTab != BrowserApp.selectedTab) {
-          // this should never happen
-          Cu.reportError("Warning: selected tab changed during find!");
-          // fall through and restore viewport on the initial tab anyway
-        }
-        this._targetTab.sendViewportUpdate();
-      }
-    } else {
-      // Disabled until bug 1014113 is fixed
-      // ZoomHelper.zoomToRect(aData.rect);
-      this._viewportChanged = true;
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/InputWidgetHelper.js b/mobile/android/chrome/content/InputWidgetHelper.js
deleted file mode 100644
index cf66a263e..000000000
--- a/mobile/android/chrome/content/InputWidgetHelper.js
+++ /dev/null
@@ -1,98 +0,0 @@
-/* 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/. */
-"use strict";
-
-var InputWidgetHelper = {
-  _uiBusy: false,
-
-  handleEvent: function(aEvent) {
-    this.handleClick(aEvent.target);
-  },
-
-  handleClick: function(aTarget) {
-    // if we're busy looking at a InputWidget we want to eat any clicks that
-    // come to us, but not to process them
-    if (this._uiBusy || !this.hasInputWidget(aTarget) || this._isDisabledElement(aTarget))
-      return;
-
-    this._uiBusy = true;
-    this.show(aTarget);
-    this._uiBusy = false;
-  },
-
-  show: function(aElement) {
-    let type = aElement.getAttribute('type');
-    let p = new Prompt({
-      window: aElement.ownerDocument.defaultView,
-      title: Strings.browser.GetStringFromName("inputWidgetHelper." + aElement.getAttribute('type')),
-      buttons: [
-        Strings.browser.GetStringFromName("inputWidgetHelper.set"),
-        Strings.browser.GetStringFromName("inputWidgetHelper.clear"),
-        Strings.browser.GetStringFromName("inputWidgetHelper.cancel")
-      ],
-    }).addDatePicker({
-      value: aElement.value,
-      type: type,
-      min: aElement.min,
-      max: aElement.max,
-    }).show((function(data) {
-      let changed = false;
-      if (data.button == -1) {
-        // This type is not supported with this android version.
-        return;
-      }
-      if (data.button == 1) {
-        // The user cleared the value.
-        if (aElement.value != "") {
-          aElement.value = "";
-          changed = true;
-        }
-      } else if (data.button == 0) {
-        // Commit the new value.
-        if (aElement.value != data[type]) {
-          aElement.value = data[type + "0"];
-          changed = true;
-        }
-      }
-      // Else the user canceled the input.
-
-      if (changed)
-        this.fireOnChange(aElement);
-    }).bind(this));
-  },
-
-  hasInputWidget: function(aElement) {
-    if (!(aElement instanceof HTMLInputElement))
-      return false;
-
-    let type = aElement.getAttribute('type');
-    if (type == "date" || type == "datetime" || type == "datetime-local" ||
-        type == "week" || type == "month" || type == "time") {
-      return true;
-    }
-
-    return false;
-  },
-
-  fireOnChange: function(aElement) {
-    let evt = aElement.ownerDocument.createEvent("Events");
-    evt.initEvent("change", true, true, aElement.defaultView, 0,
-                  false, false,
-                  false, false, null);
-    setTimeout(function() {
-      aElement.dispatchEvent(evt);
-    }, 0);
-  },
-
-  _isDisabledElement : function(aElement) {
-    let currentElement = aElement;
-    while (currentElement) {
-      if (currentElement.disabled)
-	return true;
-
-      currentElement = currentElement.parentElement;
-    }
-    return false;
-  }
-};
diff --git a/mobile/android/chrome/content/Linkify.js b/mobile/android/chrome/content/Linkify.js
deleted file mode 100644
index 3c757cc18..000000000
--- a/mobile/android/chrome/content/Linkify.js
+++ /dev/null
@@ -1,108 +0,0 @@
-/* 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/. */
-
-const LINKIFY_TIMEOUT = 0;
-
-function Linkifier() {
-  this._linkifyTimer = null;
-  this._phoneRegex = /(?:\s|^)[\+]?(\(?\d{1,8}\)?)?([- ]+\(?\d{1,8}\)?)+( ?(x|ext) ?\d{1,3})?(?:\s|$)/g;
-}
-
-Linkifier.prototype = {
-  _buildAnchor : function(aDoc, aNumberText) {
-    let anchorNode = aDoc.createElement("a");
-    let cleanedText = "";
-    for (let i = 0; i < aNumberText.length; i++) {
-      let c = aNumberText.charAt(i);
-      if ((c >= '0' && c <= '9') || c == '+')  //assuming there is only the leading '+'.
-        cleanedText += c;
-    }
-    anchorNode.setAttribute("href", "tel:" + cleanedText);
-    let nodeText = aDoc.createTextNode(aNumberText);
-    anchorNode.appendChild(nodeText);
-    return anchorNode;
-  },
-
-  _linkifyNodeNumbers : function(aNodeToProcess, aDoc) {
-    let parent = aNodeToProcess.parentNode;
-    let nodeText = aNodeToProcess.nodeValue;
-
-    // Replacing the original text node with a sequence of
-    // |text before number|anchor with number|text after number nodes.
-    // Each step a couple of (optional) text node and anchor node are appended.
-    let anchorNode = null;
-    let m = null;
-    let startIndex = 0;
-    let prevNode = null;
-    while (m = this._phoneRegex.exec(nodeText)) {
-      anchorNode = this._buildAnchor(aDoc, nodeText.substr(m.index, m[0].length));
-
-      let textExistsBeforeNumber = (m.index > startIndex);
-      let nodeToAdd = null;
-      if (textExistsBeforeNumber)
-        nodeToAdd = aDoc.createTextNode(nodeText.substr(startIndex, m.index - startIndex));
-      else
-        nodeToAdd = anchorNode;
-
-      if (!prevNode) // first time, need to replace the whole node with the first new one.
-        parent.replaceChild(nodeToAdd, aNodeToProcess);
-      else
-        parent.insertBefore(nodeToAdd, prevNode.nextSibling); //inserts after.
-
-      if (textExistsBeforeNumber) // if we added the text node before the anchor, we still need to add the anchor node.
-        parent.insertBefore(anchorNode, nodeToAdd.nextSibling);
-
-      // next nodes need to be appended to this node.
-      prevNode = anchorNode; 
-      startIndex = m.index + m[0].length;
-    }
-
-    // if some text is remaining after the last anchor.
-    if (startIndex > 0 && startIndex < nodeText.length) {
-      let lastNode = aDoc.createTextNode(nodeText.substr(startIndex));
-      parent.insertBefore(lastNode, prevNode.nextSibling);
-      return lastNode;
-    }
-    return anchorNode;
-  },
-
-  linkifyNumbers: function(aDoc) {
-    // Removing any installed timer in case the page has changed and a previous timer is still running.
-    if (this._linkifyTimer) {
-      clearTimeout(this._linkifyTimer);
-      this._linkifyTimer = null;
-    }
-
-    let filterNode = function (node) {
-      if (node.parentNode.tagName != 'A' &&
-         node.parentNode.tagName != 'SCRIPT' &&
-         node.parentNode.tagName != 'NOSCRIPT' &&
-         node.parentNode.tagName != 'STYLE' &&
-         node.parentNode.tagName != 'APPLET' &&
-         node.parentNode.tagName != 'TEXTAREA')
-        return NodeFilter.FILTER_ACCEPT;
-      else
-        return NodeFilter.FILTER_REJECT;
-    }
-
-    let nodeWalker = aDoc.createTreeWalker(aDoc.body, NodeFilter.SHOW_TEXT, filterNode, false);
-    let parseNode = function() {
-      let node = nodeWalker.nextNode();
-      if (!node) {
-        this._linkifyTimer = null;
-        return;
-      }
-      let lastAddedNode = this._linkifyNodeNumbers(node, aDoc);
-      // we assign a different timeout whether the node was processed or not.
-      if (lastAddedNode) {
-        nodeWalker.currentNode = lastAddedNode;
-        this._linkifyTimer = setTimeout(parseNode, LINKIFY_TIMEOUT);
-      } else {
-        this._linkifyTimer = setTimeout(parseNode, LINKIFY_TIMEOUT);
-      }
-    }.bind(this);
-
-    this._linkifyTimer = setTimeout(parseNode, LINKIFY_TIMEOUT); 
-  }
-};
diff --git a/mobile/android/chrome/content/MasterPassword.js b/mobile/android/chrome/content/MasterPassword.js
deleted file mode 100644
index d85fa928d..000000000
--- a/mobile/android/chrome/content/MasterPassword.js
+++ /dev/null
@@ -1,67 +0,0 @@
-/* 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/. */
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-var MasterPassword = {
-  pref: "privacy.masterpassword.enabled",
-  _tokenName: "",
-
-  get _secModuleDB() {
-    delete this._secModuleDB;
-    return this._secModuleDB = Cc["@mozilla.org/security/pkcs11moduledb;1"].getService(Ci.nsIPKCS11ModuleDB);
-  },
-
-  get _pk11DB() {
-    delete this._pk11DB;
-    return this._pk11DB = Cc["@mozilla.org/security/pk11tokendb;1"].getService(Ci.nsIPK11TokenDB);
-  },
-
-  get enabled() {
-    let slot = this._secModuleDB.findSlotByName(this._tokenName);
-    if (slot) {
-      let status = slot.status;
-      return status != Ci.nsIPKCS11Slot.SLOT_UNINITIALIZED && status != Ci.nsIPKCS11Slot.SLOT_READY;
-    }
-    return false;
-  },
-
-  setPassword: function setPassword(aPassword) {
-    try {
-      let status;
-      let slot = this._secModuleDB.findSlotByName(this._tokenName);
-      if (slot)
-        status = slot.status;
-      else
-        return false;
-
-      let token = this._pk11DB.findTokenByName(this._tokenName);
-
-      if (status == Ci.nsIPKCS11Slot.SLOT_UNINITIALIZED)
-        token.initPassword(aPassword);
-      else if (status == Ci.nsIPKCS11Slot.SLOT_READY)
-        token.changePassword("", aPassword);
-
-      return true;
-    } catch(e) {
-      dump("MasterPassword.setPassword: " + e);
-    }
-    return false;
-  },
-
-  removePassword: function removePassword(aOldPassword) {
-    try {
-      let token = this._pk11DB.getInternalKeyToken();
-      if (token.checkPassword(aOldPassword)) {
-        token.changePassword(aOldPassword, "");
-        return true;
-      }
-    } catch(e) {
-      dump("MasterPassword.removePassword: " + e + "\n");
-    }
-    Snackbars.show(Strings.browser.GetStringFromName("masterPassword.incorrect"), Snackbars.LENGTH_LONG);
-    return false;
-  }
-};
diff --git a/mobile/android/chrome/content/MemoryObserver.js b/mobile/android/chrome/content/MemoryObserver.js
deleted file mode 100644
index 2bb3ae842..000000000
--- a/mobile/android/chrome/content/MemoryObserver.js
+++ /dev/null
@@ -1,88 +0,0 @@
-/* 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/. */
-"use strict";
-
-var MemoryObserver = {
-  observe: function mo_observe(aSubject, aTopic, aData) {
-    if (aTopic == "memory-pressure") {
-      if (aData != "heap-minimize") {
-        this.handleLowMemory();
-      }
-      // The JS engine would normally GC on this notification, but since we
-      // disabled that in favor of this method (bug 669346), we should gc here.
-      // See bug 784040 for when this code was ported from XUL to native Fennec.
-      this.gc();
-    } else if (aTopic == "Memory:Dump") {
-      this.dumpMemoryStats(aData);
-    }
-  },
-
-  handleLowMemory: function() {
-    // do things to reduce memory usage here
-    if (!Services.prefs.getBoolPref("browser.tabs.disableBackgroundZombification")) {
-      let tabs = BrowserApp.tabs;
-      let selected = BrowserApp.selectedTab;
-      for (let i = 0; i < tabs.length; i++) {
-        if (tabs[i] != selected && !tabs[i].playingAudio) {
-          this.zombify(tabs[i]);
-        }
-      }
-    }
-
-    // Change some preferences temporarily for only this session
-    let defaults = Services.prefs.getDefaultBranch(null);
-
-    // Reduce the amount of decoded image data we keep around
-    defaults.setIntPref("image.mem.max_decoded_image_kb", 0);
-
-    // Stop using the bfcache
-    if (!Services.prefs.getBoolPref("browser.sessionhistory.bfcacheIgnoreMemoryPressure")) {
-      defaults.setIntPref("browser.sessionhistory.max_total_viewers", 0);
-    }
-  },
-
-  zombify: function(tab) {
-    let browser = tab.browser;
-    let data = browser.__SS_data;
-    let extra = browser.__SS_extdata;
-
-    // Notify any interested parties (e.g. the session store)
-    // that the original tab object is going to be destroyed
-    let evt = document.createEvent("UIEvents");
-    evt.initUIEvent("TabPreZombify", true, false, window, null);
-    browser.dispatchEvent(evt);
-
-    // We need this data to correctly create and position the new browser
-    // If this browser is already a zombie, fallback to the session data
-    let currentURL = browser.__SS_restore ? data.entries[0].url : browser.currentURI.spec;
-    let sibling = browser.nextSibling;
-    let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(browser);
-
-    tab.destroy();
-    tab.create(currentURL, { sibling: sibling, zombifying: true, delayLoad: true, isPrivate: isPrivate });
-
-    // Reattach session store data and flag this browser so it is restored on select
-    browser = tab.browser;
-    browser.__SS_data = data;
-    browser.__SS_extdata = extra;
-    browser.__SS_restore = true;
-    browser.setAttribute("pending", "true");
-
-    // Notify the session store to reattach its listeners to the new tab object
-    evt = document.createEvent("UIEvents");
-    evt.initUIEvent("TabPostZombify", true, false, window, null);
-    browser.dispatchEvent(evt);
-  },
-
-  gc: function() {
-    window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils).garbageCollect();
-    Cu.forceGC();
-  },
-
-  dumpMemoryStats: function(aLabel) {
-    let memDumper = Cc["@mozilla.org/memory-info-dumper;1"].getService(Ci.nsIMemoryInfoDumper);
-    memDumper.dumpMemoryInfoToTempDir(aLabel, /* anonymize = */ false,
-                                      /* minimize = */ false);
-  },
-};
diff --git a/mobile/android/chrome/content/OfflineApps.js b/mobile/android/chrome/content/OfflineApps.js
deleted file mode 100644
index e11b3c645..000000000
--- a/mobile/android/chrome/content/OfflineApps.js
+++ /dev/null
@@ -1,77 +0,0 @@
-/* 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/. */
-"use strict";
-
-var OfflineApps = {
-  offlineAppRequested: function(aContentWindow) {
-    if (!Services.prefs.getBoolPref("browser.offline-apps.notify"))
-      return;
-
-    let tab = BrowserApp.getTabForWindow(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 (Services.prefs.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 strings = Strings.browser;
-    let buttons = [{
-      label: strings.GetStringFromName("offlineApps.dontAllow2"),
-      callback: function(aChecked) {
-        if (aChecked)
-          OfflineApps.disallowSite(aContentWindow.document);
-      }
-    },
-    {
-      label: strings.GetStringFromName("offlineApps.allow"),
-      callback: function() {
-        OfflineApps.allowSite(aContentWindow.document);
-      },
-      positive: true
-    }];
-
-    let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name + "'" : host;
-    let message = strings.formatStringFromName("offlineApps.ask", [requestor], 1);
-    let options = { checkbox: Strings.browser.GetStringFromName("offlineApps.dontAskAgain") };
-    NativeWindow.doorhanger.show(message, notificationID, buttons, tab.id, 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);
-  },
-
-  _startFetching: function(aDocument) {
-    if (!aDocument.documentElement)
-      return;
-
-    let manifest = aDocument.documentElement.getAttribute("manifest");
-    if (!manifest)
-      return;
-
-    let manifestURI = Services.io.newURI(manifest, aDocument.characterSet, aDocument.documentURIObject);
-    let updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"].getService(Ci.nsIOfflineCacheUpdateService);
-    updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject, aDocument.nodePrincipal, window);
-  }
-};
diff --git a/mobile/android/chrome/content/PermissionsHelper.js b/mobile/android/chrome/content/PermissionsHelper.js
deleted file mode 100644
index ad1eb760a..000000000
--- a/mobile/android/chrome/content/PermissionsHelper.js
+++ /dev/null
@@ -1,188 +0,0 @@
-/* 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/. */
-"use strict";
-
-var PermissionsHelper = {
-  _permissonTypes: ["password", "geolocation", "popup", "indexedDB",
-                    "offline-app", "desktop-notification", "plugins", "native-intent",
-                    "flyweb-publish-server"],
-  _permissionStrings: {
-    "password": {
-      label: "password.logins",
-      allowed: "password.save",
-      denied: "password.dontSave"
-    },
-    "geolocation": {
-      label: "geolocation.location",
-      allowed: "geolocation.allow",
-      denied: "geolocation.dontAllow"
-    },
-    "flyweb-publish-server": {
-      label: "flyWebPublishServer.publishServer",
-      allowed: "flyWebPublishServer.allow",
-      denied: "flyWebPublishServer.dontAllow"
-    },
-    "popup": {
-      label: "blockPopups.label2",
-      allowed: "popup.show",
-      denied: "popup.dontShow"
-    },
-    "indexedDB": {
-      label: "offlineApps.offlineData",
-      allowed: "offlineApps.allow",
-      denied: "offlineApps.dontAllow2"
-    },
-    "offline-app": {
-      label: "offlineApps.offlineData",
-      allowed: "offlineApps.allow",
-      denied: "offlineApps.dontAllow2"
-    },
-    "desktop-notification": {
-      label: "desktopNotification.notifications",
-      allowed: "desktopNotification2.allow",
-      denied: "desktopNotification2.dontAllow"
-    },
-    "plugins": {
-      label: "clickToPlayPlugins.plugins",
-      allowed: "clickToPlayPlugins.activate",
-      denied: "clickToPlayPlugins.dontActivate"
-    },
-    "native-intent": {
-      label: "helperapps.openWithList2",
-      allowed: "helperapps.always",
-      denied: "helperapps.never"
-    }
-  },
-
-  observe: function observe(aSubject, aTopic, aData) {
-    let uri = BrowserApp.selectedBrowser.currentURI;
-    let check = false;
-
-    switch (aTopic) {
-      case "Permissions:Check":
-        check = true;
-      case "Permissions:Get":
-        let permissions = [];
-        for (let i = 0; i < this._permissonTypes.length; i++) {
-          let type = this._permissonTypes[i];
-          let value = this.getPermission(uri, type);
-
-          // Only add the permission if it was set by the user
-          if (value == Services.perms.UNKNOWN_ACTION)
-            continue;
-
-          if (check) {
-            Messaging.sendRequest({
-              type: "Permissions:CheckResult",
-              hasPermissions: true
-            });
-            return;
-          }
-          // Get the strings that correspond to the permission type
-          let typeStrings = this._permissionStrings[type];
-          let label = Strings.browser.GetStringFromName(typeStrings["label"]);
-
-          // Get the key to look up the appropriate string entity
-          let valueKey = value == Services.perms.ALLOW_ACTION ?
-                         "allowed" : "denied";
-          let valueString = Strings.browser.GetStringFromName(typeStrings[valueKey]);
-
-          permissions.push({
-            type: type,
-            setting: label,
-            value: valueString
-          });
-        }
-
-        if (check) {
-          Messaging.sendRequest({
-            type: "Permissions:CheckResult",
-            hasPermissions: false
-          });
-          return;
-        }
-
-        // Keep track of permissions, so we know which ones to clear
-        this._currentPermissions = permissions;
-
-        Messaging.sendRequest({
-          type: "Permissions:Data",
-          permissions: permissions
-        });
-        break;
- 
-      case "Permissions:Clear":
-        // An array of the indices of the permissions we want to clear
-        let permissionsToClear = JSON.parse(aData);
-        let privacyContext = BrowserApp.selectedBrowser.docShell
-                               .QueryInterface(Ci.nsILoadContext);
-
-        for (let i = 0; i < permissionsToClear.length; i++) {
-          let indexToClear = permissionsToClear[i];
-          let permissionType = this._currentPermissions[indexToClear]["type"];
-          this.clearPermission(uri, permissionType, privacyContext);
-        }
-        break;
-    }
-  },
-
-  /**
-   * Gets the permission value stored for a specified permission type.
-   *
-   * @param aType
-   *        The permission type string stored in permission manager.
-   *        e.g. "geolocation", "indexedDB", "popup"
-   *
-   * @return A permission value defined in nsIPermissionManager.
-   */
-  getPermission: function getPermission(aURI, aType) {
-    // Password saving isn't a nsIPermissionManager permission type, so handle
-    // it seperately.
-    if (aType == "password") {
-      // By default, login saving is enabled, so if it is disabled, the
-      // user selected the never remember option
-      if (!Services.logins.getLoginSavingEnabled(aURI.prePath))
-        return Services.perms.DENY_ACTION;
-
-      // Check to see if the user ever actually saved a login
-      if (Services.logins.countLogins(aURI.prePath, "", ""))
-        return Services.perms.ALLOW_ACTION;
-
-      return Services.perms.UNKNOWN_ACTION;
-    }
-
-    // Geolocation consumers use testExactPermission
-    if (aType == "geolocation")
-      return Services.perms.testExactPermission(aURI, aType);
-
-    return Services.perms.testPermission(aURI, aType);
-  },
-
-  /**
-   * Clears a user-set permission value for the site given a permission type.
-   *
-   * @param aType
-   *        The permission type string stored in permission manager.
-   *        e.g. "geolocation", "indexedDB", "popup"
-   */
-  clearPermission: function clearPermission(aURI, aType, aContext) {
-    // Password saving isn't a nsIPermissionManager permission type, so handle
-    // it seperately.
-    if (aType == "password") {
-      // Get rid of exisiting stored logings
-      let logins = Services.logins.findLogins({}, aURI.prePath, "", "");
-      for (let i = 0; i < logins.length; i++) {
-        Services.logins.removeLogin(logins[i]);
-      }
-      // Re-set login saving to enabled
-      Services.logins.setLoginSavingEnabled(aURI.prePath, true);
-    } else {
-      Services.perms.remove(aURI, aType);
-      // Clear content prefs set in ContentPermissionPrompt.js
-      Cc["@mozilla.org/content-pref/service;1"]
-        .getService(Ci.nsIContentPrefService2)
-        .removeByDomainAndName(aURI.spec, aType + ".request.remember", aContext);
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/PluginHelper.js b/mobile/android/chrome/content/PluginHelper.js
deleted file mode 100644
index 59d87fa7c..000000000
--- a/mobile/android/chrome/content/PluginHelper.js
+++ /dev/null
@@ -1,221 +0,0 @@
-/* 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/. */
-"use strict";
-
-var PluginHelper = {
-  showDoorHanger: function(aTab) {
-    if (!aTab.browser)
-      return;
-
-    // Even though we may not end up showing a doorhanger, this flag
-    // lets us know that we've tried to show a doorhanger.
-    aTab.shouldShowPluginDoorhanger = false;
-
-    let uri = aTab.browser.currentURI;
-
-    // If the user has previously set a plugins permission for this website,
-    // either play or don't play the plugins instead of showing a doorhanger.
-    let permValue = Services.perms.testPermission(uri, "plugins");
-    if (permValue != Services.perms.UNKNOWN_ACTION) {
-      if (permValue == Services.perms.ALLOW_ACTION)
-        PluginHelper.playAllPlugins(aTab.browser.contentWindow);
-
-      return;
-    }
-
-    let message = Strings.browser.formatStringFromName("clickToPlayPlugins.message2",
-                                                       [uri.host], 1);
-    let buttons = [
-      {
-        label: Strings.browser.GetStringFromName("clickToPlayPlugins.dontActivate"),
-        callback: function(aChecked) {
-          // If the user checked "Don't ask again", make a permanent exception
-          if (aChecked)
-            Services.perms.add(uri, "plugins", Ci.nsIPermissionManager.DENY_ACTION);
-
-          // Other than that, do nothing
-        }
-      },
-      {
-        label: Strings.browser.GetStringFromName("clickToPlayPlugins.activate"),
-        callback: function(aChecked) {
-          // If the user checked "Don't ask again", make a permanent exception
-          if (aChecked)
-            Services.perms.add(uri, "plugins", Ci.nsIPermissionManager.ALLOW_ACTION);
-
-          PluginHelper.playAllPlugins(aTab.browser.contentWindow);
-        },
-        positive: true
-      }
-    ];
-
-    // Add a checkbox with a "Don't ask again" message if the uri contains a
-    // host. Adding a permanent exception will fail if host is not present.
-    let options = uri.host ? { checkbox: Strings.browser.GetStringFromName("clickToPlayPlugins.dontAskAgain") } : {};
-
-    NativeWindow.doorhanger.show(message, "ask-to-play-plugins", buttons, aTab.id, options);
-  },
-
-  delayAndShowDoorHanger: function(aTab) {
-    // To avoid showing the doorhanger if there are also visible plugin
-    // overlays on the page, delay showing the doorhanger to check if
-    // visible plugins get added in the near future.
-    if (!aTab.pluginDoorhangerTimeout) {
-      aTab.pluginDoorhangerTimeout = setTimeout(function() {
-        if (this.shouldShowPluginDoorhanger) {
-          PluginHelper.showDoorHanger(this);
-        }
-      }.bind(aTab), 500);
-    }
-  },
-
-  playAllPlugins: function(aContentWindow) {
-    let cwu = aContentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
-                            .getInterface(Ci.nsIDOMWindowUtils);
-    // XXX not sure if we should enable plugins for the parent documents...
-    let plugins = cwu.plugins;
-    if (!plugins || !plugins.length)
-      return;
-
-    plugins.forEach(this.playPlugin);
-  },
-
-  playPlugin: function(plugin) {
-    let objLoadingContent = plugin.QueryInterface(Ci.nsIObjectLoadingContent);
-    if (!objLoadingContent.activated)
-      objLoadingContent.playPlugin();
-  },
-
-  getPluginPreference: function getPluginPreference() {
-    let pluginDisable = Services.prefs.getBoolPref("plugin.disable");
-    if (pluginDisable)
-      return "0";
-
-    let state = Services.prefs.getIntPref("plugin.default.state");
-    return state == Ci.nsIPluginTag.STATE_CLICKTOPLAY ? "2" : "1";
-  },
-
-  setPluginPreference: function setPluginPreference(aValue) {
-    switch (aValue) {
-      case "0": // Enable Plugins = No
-        Services.prefs.setBoolPref("plugin.disable", true);
-        Services.prefs.clearUserPref("plugin.default.state");
-        break;
-      case "1": // Enable Plugins = Yes
-        Services.prefs.clearUserPref("plugin.disable");
-        Services.prefs.setIntPref("plugin.default.state", Ci.nsIPluginTag.STATE_ENABLED);
-        break;
-      case "2": // Enable Plugins = Tap to Play (default)
-        Services.prefs.clearUserPref("plugin.disable");
-        Services.prefs.clearUserPref("plugin.default.state");
-        break;
-    }
-  },
-
-  // Copied from /browser/base/content/browser.js
-  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.
-    let overflows = (overlay.scrollWidth > pluginRect.width) ||
-                    (overlay.scrollHeight - 5 > pluginRect.height);
-
-    return overflows;
-  },
-
-  getPluginMimeType: function (plugin) {
-    var tagMimetype = plugin.actualType;
-
-    if (tagMimetype == "") {
-      tagMimetype = plugin.type;
-    }
-
-    return tagMimetype;
-  },
-
-  handlePluginBindingAttached: function (aTab, aEvent) {
-    let plugin = aEvent.target;
-    let doc = plugin.ownerDocument;
-    let overlay = doc.getAnonymousElementByAttribute(plugin, "anonid", "main");
-    if (!overlay || overlay._bindingHandled) {
-      return;
-    }
-    overlay._bindingHandled = true;
-
-    let eventType = PluginHelper._getBindingType(plugin);
-    if (!eventType) {
-      // Not all bindings have handlers
-      return;
-    }
-
-    switch  (eventType) {
-      case "PluginClickToPlay": {
-        // Check if plugins have already been activated for this page, or if
-        // the user has set a permission to always play plugins on the site
-        if (aTab.clickToPlayPluginsActivated ||
-            Services.perms.testPermission(aTab.browser.currentURI, "plugins") ==
-            Services.perms.ALLOW_ACTION) {
-          PluginHelper.playPlugin(plugin);
-          return;
-        }
-
-        // If the plugin is hidden, or if the overlay is too small, show a 
-        // doorhanger notification
-        if (PluginHelper.isTooSmall(plugin, overlay)) {
-          PluginHelper.delayAndShowDoorHanger(aTab);
-        } else {
-          // There's a large enough visible overlay that we don't need to show
-          // the doorhanger.
-          aTab.shouldShowPluginDoorhanger = false;
-          overlay.classList.add("visible");
-        }
-
-        // Add click to play listener to the overlay
-        overlay.addEventListener("click", function(e) {
-          if (!e.isTrusted)
-            return;
-          e.preventDefault();
-          let win = e.target.ownerDocument.defaultView.top;
-          let tab = BrowserApp.getTabForWindow(win);
-          tab.clickToPlayPluginsActivated = true;
-          PluginHelper.playAllPlugins(win);
-
-          NativeWindow.doorhanger.hide("ask-to-play-plugins", tab.id);
-        }, true);
-
-        // Add handlers for over- and underflow in case the plugin gets resized
-        plugin.addEventListener("overflow", function(event) {
-          overlay.classList.remove("visible");
-          PluginHelper.delayAndShowDoorHanger(aTab);
-        });
-        plugin.addEventListener("underflow", function(event) {
-          // This is also triggered if only one dimension underflows,
-          // the other dimension might still overflow
-          if (!PluginHelper.isTooSmall(plugin, overlay)) {
-            overlay.classList.add("visible");
-          }
-        });
-
-        break;
-      }
-    }
-  },
-
-  // 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_CLICK_TO_PLAY:
-        return "PluginClickToPlay";
-      default:
-        // Not all states map to a handler
-        return null;
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/PresentationView.js b/mobile/android/chrome/content/PresentationView.js
deleted file mode 100644
index 4f7e02870..000000000
--- a/mobile/android/chrome/content/PresentationView.js
+++ /dev/null
@@ -1,63 +0,0 @@
-/* -*- Mode: tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* 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/. */
-"use strict";
-
-const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
-
-const TOPIC_PRESENTATION_VIEW_READY = "presentation-view-ready";
-const TOPIC_PRESENTATION_RECEIVER_LAUNCH = "presentation-receiver:launch";
-const TOPIC_PRESENTATION_RECEIVER_LAUNCH_RESPONSE = "presentation-receiver:launch:response";
-
-// globals Services
-Cu.import("resource://gre/modules/Services.jsm");
-
-function log(str) {
-  // dump("-*- PresentationView.js -*-: " + str + "\n");
-}
-
-let PresentationView = {
-  _id: null,
-
-  startup: function startup() {
-    // use hash as the ID of this top level window
-    this._id = window.location.hash.substr(1);
-
-    // Listen "presentation-receiver:launch" sent from
-    // PresentationRequestUIGlue.
-    Services.obs.addObserver(this,TOPIC_PRESENTATION_RECEIVER_LAUNCH, false);
-
-    // Notify PresentationView is ready.
-    Services.obs.notifyObservers(null, TOPIC_PRESENTATION_VIEW_READY, this._id);
-  },
-
-  stop: function stop() {
-    Services.obs.removeObserver(this, TOPIC_PRESENTATION_RECEIVER_LAUNCH);
-  },
-
-  observe: function observe(aSubject, aTopic, aData) {
-    log("Got observe: aTopic=" + aTopic);
-
-    let requestData = JSON.parse(aData);
-    if (this._id != requestData.windowId) {
-      return;
-    }
-
-    let browser = document.getElementById("content");
-    browser.setAttribute("mozpresentation", requestData.url);
-    try {
-      browser.loadURI(requestData.url);
-      Services.obs.notifyObservers(browser,
-                                  TOPIC_PRESENTATION_RECEIVER_LAUNCH_RESPONSE,
-                                  JSON.stringify({ result: "success",
-                                                   requestId: requestData.requestId }));
-    } catch (e) {
-      Services.obs.notifyObservers(null,
-                                   TOPIC_PRESENTATION_RECEIVER_LAUNCH_RESPONSE,
-                                   JSON.stringify({ result: "error",
-                                                    reason: e.message }));
-    }
-  }
-};
diff --git a/mobile/android/chrome/content/PresentationView.xul b/mobile/android/chrome/content/PresentationView.xul
deleted file mode 100644
index 00440453c..000000000
--- a/mobile/android/chrome/content/PresentationView.xul
+++ /dev/null
@@ -1,15 +0,0 @@
-<?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/. -->
-
-<window id="presentation-window"
-        onload="PresentationView.startup();"
-        onunload="PresentationView.stop();"
-        windowtype="navigator:browser"
-        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <browser id="content" type="content-targetable" src="about:blank" flex="1"/>
-
-  <script type="application/javascript" src="chrome://browser/content/PresentationView.js"/>
-</window>
diff --git a/mobile/android/chrome/content/PrintHelper.js b/mobile/android/chrome/content/PrintHelper.js
deleted file mode 100644
index 9b071ee92..000000000
--- a/mobile/android/chrome/content/PrintHelper.js
+++ /dev/null
@@ -1,73 +0,0 @@
-// -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
-/* 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/. */
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-var PrintHelper = {
-  init: function() {
-    Services.obs.addObserver(this, "Print:PDF", false);
-  },
-
-  observe: function (aSubject, aTopic, aData) {
-    let browser = BrowserApp.selectedBrowser;
-
-    switch (aTopic) {
-      case "Print:PDF":
-        Messaging.handleRequest(aTopic, aData, (data) => {
-          return this.generatePDF(browser);
-        });
-        break;
-    }
-  },
-
-  generatePDF: function(aBrowser) {
-    // Create the final destination file location
-    let fileName = ContentAreaUtils.getDefaultFileName(aBrowser.contentTitle, aBrowser.currentURI, null, null);
-    fileName = fileName.trim() + ".pdf";
-
-    let file = Services.dirsvc.get("TmpD", Ci.nsIFile);
-    file.append(fileName);
-    file.createUnique(file.NORMAL_FILE_TYPE, parseInt("666", 8));
-
-    let printSettings = Cc["@mozilla.org/gfx/printsettings-service;1"].getService(Ci.nsIPrintSettingsService).newPrintSettings;
-    printSettings.printSilent = true;
-    printSettings.showPrintProgress = false;
-    printSettings.printBGImages = false;
-    printSettings.printBGColors = false;
-    printSettings.printToFile = true;
-    printSettings.toFileName = file.path;
-    printSettings.printFrameType = Ci.nsIPrintSettings.kFramesAsIs;
-    printSettings.outputFormat = Ci.nsIPrintSettings.kOutputFormatPDF;
-
-    let webBrowserPrint = aBrowser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebBrowserPrint);
-
-    return new Promise((resolve, reject) => {
-      webBrowserPrint.print(printSettings, {
-        onStateChange: function(webProgress, request, stateFlags, status) {
-          // We get two STATE_START calls, one for STATE_IS_DOCUMENT and one for STATE_IS_NETWORK
-          if (stateFlags & Ci.nsIWebProgressListener.STATE_START && stateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
-            // Let the user know something is happening. Generating the PDF can take some time.
-            Snackbars.show(Strings.browser.GetStringFromName("alertPrintjobToast"), Snackbars.LENGTH_LONG);
-          }
-
-          // We get two STATE_STOP calls, one for STATE_IS_DOCUMENT and one for STATE_IS_NETWORK
-          if (stateFlags & Ci.nsIWebProgressListener.STATE_STOP && stateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
-            if (Components.isSuccessCode(status)) {
-              // Send the details to Java
-              resolve({ file: file.path, title: fileName });
-            } else {
-              reject();
-            }
-          }
-        },
-        onProgressChange: function () {},
-        onLocationChange: function () {},
-        onStatusChange: function () {},
-        onSecurityChange: function () {},
-      });
-    });
-  }
-};
diff --git a/mobile/android/chrome/content/Reader.js b/mobile/android/chrome/content/Reader.js
deleted file mode 100644
index d0f3d7801..000000000
--- a/mobile/android/chrome/content/Reader.js
+++ /dev/null
@@ -1,290 +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/. */
-
-"use strict";
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-/*globals MAX_URI_LENGTH, MAX_TITLE_LENGTH */
-
-var Reader = {
-  // These values should match those defined in BrowserContract.java.
-  STATUS_UNFETCHED: 0,
-  STATUS_FETCH_FAILED_TEMPORARY: 1,
-  STATUS_FETCH_FAILED_PERMANENT: 2,
-  STATUS_FETCH_FAILED_UNSUPPORTED_FORMAT: 3,
-  STATUS_FETCHED_ARTICLE: 4,
-
-  get _hasUsedToolbar() {
-    delete this._hasUsedToolbar;
-    return this._hasUsedToolbar = Services.prefs.getBoolPref("reader.has_used_toolbar");
-  },
-
-  /**
-   * BackPressListener (listeners / ReaderView Ids).
-   */
-  _backPressListeners: [],
-  _backPressViewIds: [],
-
-  /**
-   * Set a backPressListener for this tabId / ReaderView Id pair.
-   */
-  _addBackPressListener: function(tabId, viewId, listener) {
-    this._backPressListeners[tabId] = listener;
-    this._backPressViewIds[viewId] = tabId;
-  },
-
-  /**
-   * Remove a backPressListener for this ReaderView Id.
-   */
-  _removeBackPressListener: function(viewId) {
-    let tabId = this._backPressViewIds[viewId];
-    if (tabId != undefined) {
-      this._backPressListeners[tabId] = null;
-      delete this._backPressViewIds[viewId];
-    }
-  },
-
-  /**
-   * If the requested tab has a backPress listener, return its results, else false.
-   */
-  onBackPress: function(tabId) {
-    let listener = this._backPressListeners[tabId];
-    return { handled: (listener ? listener() : false) };
-  },
-
-  observe: function Reader_observe(aMessage, aTopic, aData) {
-    switch (aTopic) {
-      case "Reader:RemoveFromCache": {
-        ReaderMode.removeArticleFromCache(aData).catch(e => Cu.reportError("Error removing article from cache: " + e));
-        break;
-      }
-
-      case "Reader:AddToCache": {
-        let tab = BrowserApp.getTabForId(aData);
-        if (!tab) {
-          throw new Error("No tab for tabID = " + aData + " when trying to save reader view article");
-        }
-
-        // If the article is coming from reader mode, we must have fetched it already.
-        this._getArticleData(tab.browser).then((article) => {
-          ReaderMode.storeArticleInCache(article);
-        }).catch(e => Cu.reportError("Error storing article in cache: " + e));
-        break;
-      }
-    }
-  },
-
-  receiveMessage: function(message) {
-    switch (message.name) {
-      case "Reader:ArticleGet":
-        this._getArticle(message.data.url).then((article) => {
-          // Make sure the target browser is still alive before trying to send data back.
-          if (message.target.messageManager) {
-            message.target.messageManager.sendAsyncMessage("Reader:ArticleData", { article: article });
-          }
-        }, e => {
-          if (e && e.newURL) {
-            message.target.loadURI("about:reader?url=" + encodeURIComponent(e.newURL));
-          }
-        });
-        break;
-
-      // On DropdownClosed in ReaderView, we cleanup / clear existing BackPressListener.
-      case "Reader:DropdownClosed": {
-        this._removeBackPressListener(message.data);
-        break;
-      }
-
-      // On DropdownOpened in ReaderView, we add BackPressListener to handle a subsequent BACK request.
-      case "Reader:DropdownOpened": {
-        let tabId = BrowserApp.selectedTab.id;
-        this._addBackPressListener(tabId, message.data, () => {
-          // User hit BACK key while ReaderView has the banner font-dropdown opened.
-          // Close it and return prevent-default.
-          if (message.target.messageManager) {
-            message.target.messageManager.sendAsyncMessage("Reader:CloseDropdown");
-            return true;
-          }
-          // We can assume ReaderView banner's font-dropdown doesn't need to be closed.
-          return false;
-        });
-
-        break;
-      }
-
-      case "Reader:FaviconRequest": {
-        Messaging.sendRequestForResult({
-          type: "Reader:FaviconRequest",
-          url: message.data.url
-        }).then(data => {
-          message.target.messageManager.sendAsyncMessage("Reader:FaviconReturn", JSON.parse(data));
-        });
-        break;
-      }
-
-      case "Reader:SystemUIVisibility":
-        Messaging.sendRequest({
-          type: "SystemUI:Visibility",
-          visible: message.data.visible
-        });
-        break;
-
-      case "Reader:ToolbarHidden":
-        if (!this._hasUsedToolbar) {
-          Snackbars.show(Strings.browser.GetStringFromName("readerMode.toolbarTip"), Snackbars.LENGTH_LONG);
-          Services.prefs.setBoolPref("reader.has_used_toolbar", true);
-          this._hasUsedToolbar = true;
-        }
-        break;
-
-      case "Reader:UpdateReaderButton": {
-        let tab = BrowserApp.getTabForBrowser(message.target);
-        tab.browser.isArticle = message.data.isArticle;
-        this.updatePageAction(tab);
-        break;
-      }
-    }
-  },
-
-  pageAction: {
-    readerModeCallback: function(browser) {
-      let url = browser.currentURI.spec;
-      if (url.startsWith("about:reader")) {
-        UITelemetry.addEvent("action.1", "button", null, "reader_exit");
-      } else {
-        UITelemetry.addEvent("action.1", "button", null, "reader_enter");
-      }
-      browser.messageManager.sendAsyncMessage("Reader:ToggleReaderMode");
-    },
-  },
-
-  updatePageAction: function(tab) {
-    if (!tab.getActive()) {
-      return;
-    }
-
-    if (this.pageAction.id) {
-      PageActions.remove(this.pageAction.id);
-      delete this.pageAction.id;
-    }
-
-    let showPageAction = (icon, title) => {
-      this.pageAction.id = PageActions.add({
-        icon: icon,
-        title: title,
-        clickCallback: () => this.pageAction.readerModeCallback(browser),
-        important: true
-      });
-    };
-
-    let browser = tab.browser;
-    if (browser.currentURI.spec.startsWith("about:reader")) {
-      showPageAction("drawable://reader_active", Strings.reader.GetStringFromName("readerView.close"));
-      // Only start a reader session if the viewer is in the foreground. We do
-      // not track background reader viewers.
-      UITelemetry.startSession("reader.1", null);
-      return;
-    }
-
-    // Only stop a reader session if the foreground viewer is not visible.
-    UITelemetry.stopSession("reader.1", "", null);
-
-    if (browser.isArticle) {
-      showPageAction("drawable://reader", Strings.reader.GetStringFromName("readerView.enter"));
-      UITelemetry.addEvent("show.1", "button", null, "reader_available");
-    } else {
-      UITelemetry.addEvent("show.1", "button", null, "reader_unavailable");
-    }
-  },
-
-  /**
-   * Gets an article for a given URL. This method will download and parse a document
-   * if it does not find the article in the cache.
-   *
-   * @param url The article URL.
-   * @return {Promise}
-   * @resolves JS object representing the article, or null if no article is found.
-   */
-  _getArticle: Task.async(function* (url) {
-    // First try to find a parsed article in the cache.
-    let article = yield ReaderMode.getArticleFromCache(url);
-    if (article) {
-      return article;
-    }
-
-    // Article hasn't been found in the cache, we need to
-    // download the page and parse the article out of it.
-    return yield ReaderMode.downloadAndParseDocument(url).catch(e => {
-      if (e && e.newURL) {
-        // Pass up the error so we can navigate the browser in question to the new URL:
-        throw e;
-      }
-      Cu.reportError("Error downloading and parsing document: " + e);
-      return null;
-    });
-  }),
-
-  _getArticleData: function(browser) {
-    return new Promise((resolve, reject) => {
-      if (browser == null) {
-        reject("_getArticleData needs valid browser");
-      }
-
-      let mm = browser.messageManager;
-      let listener = (message) => {
-        mm.removeMessageListener("Reader:StoredArticleData", listener);
-        resolve(message.data.article);
-      };
-      mm.addMessageListener("Reader:StoredArticleData", listener);
-      mm.sendAsyncMessage("Reader:GetStoredArticleData");
-    });
-  },
-
-
-  /**
-   * Migrates old indexedDB reader mode cache to new JSON cache.
-   */
-  migrateCache: Task.async(function* () {
-    let cacheDB = yield new Promise((resolve, reject) => {
-      let request = window.indexedDB.open("about:reader", 1);
-      request.onsuccess = event => resolve(event.target.result);
-      request.onerror = event => reject(request.error);
-
-      // If there is no DB to migrate, don't do anything.
-      request.onupgradeneeded = event => resolve(null);
-    });
-
-    if (!cacheDB) {
-      return;
-    }
-
-    let articles = yield new Promise((resolve, reject) => {
-      let articles = [];
-
-      let transaction = cacheDB.transaction(cacheDB.objectStoreNames);
-      let store = transaction.objectStore(cacheDB.objectStoreNames[0]);
-
-      let request = store.openCursor();
-      request.onsuccess = event => {
-        let cursor = event.target.result;
-        if (!cursor) {
-          resolve(articles);
-        } else {
-          articles.push(cursor.value);
-          cursor.continue();
-        }
-      };
-      request.onerror = event => reject(request.error);
-    });
-
-    for (let article of articles) {
-      yield ReaderMode.storeArticleInCache(article);
-    }
-
-    // Delete the database.
-    window.indexedDB.deleteDatabase("about:reader");
-  }),
-};
diff --git a/mobile/android/chrome/content/RemoteDebugger.js b/mobile/android/chrome/content/RemoteDebugger.js
deleted file mode 100644
index a5a3a43de..000000000
--- a/mobile/android/chrome/content/RemoteDebugger.js
+++ /dev/null
@@ -1,355 +0,0 @@
-// -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
-/* 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/. */
-/* globals DebuggerServer */
-"use strict";
-
-XPCOMUtils.defineLazyGetter(this, "DebuggerServer", () => {
-  let { require } = Cu.import("resource://devtools/shared/Loader.jsm", {});
-  let { DebuggerServer } = require("devtools/server/main");
-  return DebuggerServer;
-});
-
-var RemoteDebugger = {
-  init() {
-    USBRemoteDebugger.init();
-    WiFiRemoteDebugger.init();
-  },
-
-  get isAnyEnabled() {
-    return USBRemoteDebugger.isEnabled || WiFiRemoteDebugger.isEnabled;
-  },
-
-  /**
-   * Prompt the user to accept or decline the incoming connection.
-   *
-   * @param session object
-   *        The session object will contain at least the following fields:
-   *        {
-   *          authentication,
-   *          client: {
-   *            host,
-   *            port
-   *          },
-   *          server: {
-   *            host,
-   *            port
-   *          }
-   *        }
-   *        Specific authentication modes may include additional fields.  Check
-   *        the different |allowConnection| methods in
-   *        devtools/shared/security/auth.js.
-   * @return An AuthenticationResult value.
-   *         A promise that will be resolved to the above is also allowed.
-   */
-  allowConnection(session) {
-    if (this._promptingForAllow) {
-      // Don't stack connection prompts if one is already open
-      return DebuggerServer.AuthenticationResult.DENY;
-    }
-
-    if (!session.server.port) {
-      this._promptingForAllow = this._promptForUSB(session);
-    } else {
-      this._promptingForAllow = this._promptForTCP(session);
-    }
-    this._promptingForAllow.then(() => this._promptingForAllow = null);
-
-    return this._promptingForAllow;
-  },
-
-  _promptForUSB(session) {
-    if (session.authentication !== 'PROMPT') {
-      // This dialog is not prepared for any other authentication method at
-      // this time.
-      return DebuggerServer.AuthenticationResult.DENY;
-    }
-
-    return new Promise(resolve => {
-      let title = Strings.browser.GetStringFromName("remoteIncomingPromptTitle");
-      let msg = Strings.browser.GetStringFromName("remoteIncomingPromptUSB");
-      let allow = Strings.browser.GetStringFromName("remoteIncomingPromptAllow");
-      let deny = Strings.browser.GetStringFromName("remoteIncomingPromptDeny");
-
-      // Make prompt. Note: button order is in reverse.
-      let prompt = new Prompt({
-        window: null,
-        hint: "remotedebug",
-        title: title,
-        message: msg,
-        buttons: [ allow, deny ],
-        priority: 1
-      });
-
-      prompt.show(data => {
-        let result = data.button;
-        if (result === 0) {
-          resolve(DebuggerServer.AuthenticationResult.ALLOW);
-        } else {
-          resolve(DebuggerServer.AuthenticationResult.DENY);
-        }
-      });
-    });
-  },
-
-  _promptForTCP(session) {
-    if (session.authentication !== 'OOB_CERT' || !session.client.cert) {
-      // This dialog is not prepared for any other authentication method at
-      // this time.
-      return DebuggerServer.AuthenticationResult.DENY;
-    }
-
-    return new Promise(resolve => {
-      let title = Strings.browser.GetStringFromName("remoteIncomingPromptTitle");
-      let msg = Strings.browser.formatStringFromName("remoteIncomingPromptTCP", [
-        session.client.host,
-        session.client.port
-      ], 2);
-      let scan = Strings.browser.GetStringFromName("remoteIncomingPromptScan");
-      let scanAndRemember = Strings.browser.GetStringFromName("remoteIncomingPromptScanAndRemember");
-      let deny = Strings.browser.GetStringFromName("remoteIncomingPromptDeny");
-
-      // Make prompt. Note: button order is in reverse.
-      let prompt = new Prompt({
-        window: null,
-        hint: "remotedebug",
-        title: title,
-        message: msg,
-        buttons: [ scan, scanAndRemember, deny ],
-        priority: 1
-      });
-
-      prompt.show(data => {
-        let result = data.button;
-        if (result === 0) {
-          resolve(DebuggerServer.AuthenticationResult.ALLOW);
-        } else if (result === 1) {
-          resolve(DebuggerServer.AuthenticationResult.ALLOW_PERSIST);
-        } else {
-          resolve(DebuggerServer.AuthenticationResult.DENY);
-        }
-      });
-    });
-  },
-
-  /**
-   * During OOB_CERT authentication, the user must transfer some data through
-   * some out of band mechanism from the client to the server to authenticate
-   * the devices.
-   *
-   * This implementation instructs Fennec to invoke a QR decoder and return the
-   * the data it contains back here.
-   *
-   * @return An object containing:
-   *         * sha256: hash(ClientCert)
-   *         * k     : K(random 128-bit number)
-   *         A promise that will be resolved to the above is also allowed.
-   */
-  receiveOOB() {
-    if (this._receivingOOB) {
-      return this._receivingOOB;
-    }
-
-    this._receivingOOB = Messaging.sendRequestForResult({
-      type: "DevToolsAuth:Scan"
-    }).then(data => {
-      return JSON.parse(data);
-    }, () => {
-      let title = Strings.browser.GetStringFromName("remoteQRScanFailedPromptTitle");
-      let msg = Strings.browser.GetStringFromName("remoteQRScanFailedPromptMessage");
-      let ok = Strings.browser.GetStringFromName("remoteQRScanFailedPromptOK");
-      let prompt = new Prompt({
-        window: null,
-        hint: "remotedebug",
-        title: title,
-        message: msg,
-        buttons: [ ok ],
-        priority: 1
-      });
-      prompt.show();
-    });
-
-    this._receivingOOB.then(() => this._receivingOOB = null);
-
-    return this._receivingOOB;
-  },
-
-  initServer: function() {
-    if (DebuggerServer.initialized) {
-      return;
-    }
-
-    DebuggerServer.init();
-
-    // Add browser and Fennec specific actors
-    DebuggerServer.addBrowserActors();
-    DebuggerServer.registerModule("resource://gre/modules/dbg-browser-actors.js");
-
-    // Allow debugging of chrome for any process
-    DebuggerServer.allowChromeProcess = true;
-  }
-};
-
-RemoteDebugger.allowConnection =
-  RemoteDebugger.allowConnection.bind(RemoteDebugger);
-RemoteDebugger.receiveOOB =
-  RemoteDebugger.receiveOOB.bind(RemoteDebugger);
-
-var USBRemoteDebugger = {
-
-  init() {
-    Services.prefs.addObserver("devtools.", this, false);
-
-    if (this.isEnabled) {
-      this.start();
-    }
-  },
-
-  observe(subject, topic, data) {
-    if (topic != "nsPref:changed") {
-      return;
-    }
-
-    switch (data) {
-      case "devtools.remote.usb.enabled":
-        Services.prefs.setBoolPref("devtools.debugger.remote-enabled",
-                                   RemoteDebugger.isAnyEnabled);
-        if (this.isEnabled) {
-          this.start();
-        } else {
-          this.stop();
-        }
-        break;
-
-      case "devtools.debugger.remote-port":
-      case "devtools.debugger.unix-domain-socket":
-        if (this.isEnabled) {
-          this.stop();
-          this.start();
-        }
-        break;
-    }
-  },
-
-  get isEnabled() {
-    return Services.prefs.getBoolPref("devtools.remote.usb.enabled");
-  },
-
-  start: function() {
-    if (this._listener) {
-      return;
-    }
-
-    RemoteDebugger.initServer();
-
-    let portOrPath =
-      Services.prefs.getCharPref("devtools.debugger.unix-domain-socket") ||
-      Services.prefs.getIntPref("devtools.debugger.remote-port");
-
-    try {
-      dump("Starting USB debugger on " + portOrPath);
-      let AuthenticatorType = DebuggerServer.Authenticators.get("PROMPT");
-      let authenticator = new AuthenticatorType.Server();
-      authenticator.allowConnection = RemoteDebugger.allowConnection;
-      this._listener = DebuggerServer.createListener();
-      this._listener.portOrPath = portOrPath;
-      this._listener.authenticator = authenticator;
-      this._listener.open();
-    } catch (e) {
-      dump("Unable to start USB debugger server: " + e);
-    }
-  },
-
-  stop: function() {
-    if (!this._listener) {
-      return;
-    }
-
-    try {
-      this._listener.close();
-      this._listener = null;
-    } catch (e) {
-      dump("Unable to stop USB debugger server: " + e);
-    }
-  }
-
-};
-
-var WiFiRemoteDebugger = {
-
-  init() {
-    Services.prefs.addObserver("devtools.", this, false);
-
-    if (this.isEnabled) {
-      this.start();
-    }
-  },
-
-  observe(subject, topic, data) {
-    if (topic != "nsPref:changed") {
-      return;
-    }
-
-    switch (data) {
-      case "devtools.remote.wifi.enabled":
-        Services.prefs.setBoolPref("devtools.debugger.remote-enabled",
-                                   RemoteDebugger.isAnyEnabled);
-        // Allow remote debugging on non-local interfaces when WiFi debug is
-        // enabled
-        // TODO: Bug 1034411: Lock down to WiFi interface only
-        Services.prefs.setBoolPref("devtools.debugger.force-local",
-                                   !this.isEnabled);
-        if (this.isEnabled) {
-          this.start();
-        } else {
-          this.stop();
-        }
-        break;
-    }
-  },
-
-  get isEnabled() {
-    return Services.prefs.getBoolPref("devtools.remote.wifi.enabled");
-  },
-
-  start: function() {
-    if (this._listener) {
-      return;
-    }
-
-    RemoteDebugger.initServer();
-
-    try {
-      dump("Starting WiFi debugger");
-      let AuthenticatorType = DebuggerServer.Authenticators.get("OOB_CERT");
-      let authenticator = new AuthenticatorType.Server();
-      authenticator.allowConnection = RemoteDebugger.allowConnection;
-      authenticator.receiveOOB = RemoteDebugger.receiveOOB;
-      this._listener = DebuggerServer.createListener();
-      this._listener.portOrPath = -1 /* any available port */;
-      this._listener.authenticator = authenticator;
-      this._listener.discoverable = true;
-      this._listener.encryption = true;
-      this._listener.open();
-      let port = this._listener.port;
-      dump("Started WiFi debugger on " + port);
-    } catch (e) {
-      dump("Unable to start WiFi debugger server: " + e);
-    }
-  },
-
-  stop: function() {
-    if (!this._listener) {
-      return;
-    }
-
-    try {
-      this._listener.close();
-      this._listener = null;
-    } catch (e) {
-      dump("Unable to stop WiFi debugger server: " + e);
-    }
-  }
-
-};
diff --git a/mobile/android/chrome/content/SelectHelper.js b/mobile/android/chrome/content/SelectHelper.js
deleted file mode 100644
index 41d0193d4..000000000
--- a/mobile/android/chrome/content/SelectHelper.js
+++ /dev/null
@@ -1,161 +0,0 @@
-/* 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/. */
-"use strict";
-
-var SelectHelper = {
-  _uiBusy: false,
-
-  handleEvent: function(event) {
-    this.handleClick(event.target);
-  },
-
-  handleClick: function(target) {
-    // if we're busy looking at a select we want to eat any clicks that
-    // come to us, but not to process them
-    if (this._uiBusy || !this._isMenu(target) || this._isDisabledElement(target)) {
-      return;
-    }
-
-    this._uiBusy = true;
-    this.show(target);
-    this._uiBusy = false;
-  },
-
-  // This is a callback function to be provided to prompt.show(callBack).
-  // It will update which Option elements in a Select have been selected
-  // or unselected and fire the onChange event.
-  _promptCallBack: function(data, element) {
-    let selected = data.list;
-
-    if (element instanceof Ci.nsIDOMXULMenuListElement) {
-      if (element.selectedIndex != selected[0]) {
-        element.selectedIndex = selected[0];
-        this.fireOnCommand(element);
-      }
-    } else if (element instanceof HTMLSelectElement) {
-      let changed = false;
-      let i = 0; // The index for the element from `data.list` that we are currently examining.
-      this.forVisibleOptions(element, function(node) {
-        if (node.selected && selected.indexOf(i) == -1) {
-          changed = true;
-          node.selected = false;
-        } else if (!node.selected && selected.indexOf(i) != -1) {
-          changed = true;
-          node.selected = true;
-        }
-        i++;
-      });
-
-      if (changed) {
-        this.fireOnChange(element);
-      }
-    }
-  },
-
-  show: function(element) {
-    let list = this.getListForElement(element);
-    let p = new Prompt({
-      window: element.ownerDocument.defaultView
-    });
-
-    if (element.multiple) {
-      p.addButton({
-        label: Strings.browser.GetStringFromName("selectHelper.closeMultipleSelectDialog")
-      }).setMultiChoiceItems(list);
-    } else {
-      p.setSingleChoiceItems(list);
-    }
-
-    p.show((data) => {
-      this._promptCallBack(data,element)
-    });
-  },
-
-  _isMenu: function(element) {
-    return (element instanceof HTMLSelectElement || element instanceof Ci.nsIDOMXULMenuListElement);
-  },
-
-  // Return a list of Option elements within a Select excluding
-  // any that were not visible.
-  getListForElement: function(element) {
-    let index = 0;
-    let items = [];
-    this.forVisibleOptions(element, function(node, options,parent) {
-      let item = {
-        label: node.text || node.label,
-        header: options.isGroup,
-        disabled: node.disabled,
-        id: index,
-        selected: node.selected,
-      };
-
-      if (parent) {
-        item.child = true;
-        item.disabled = item.disabled || parent.disabled;
-      }
-      items.push(item);
-      index++;
-    });
-    return items;
-  },
-
-  // Apply a function to all visible Option elements in a Select
-  forVisibleOptions: function(element, aFunction, parent = null) {
-    if (element instanceof Ci.nsIDOMXULMenuListElement) {
-      element = element.menupopup;
-    }
-    let children = element.children;
-    let numChildren = children.length;
-
-
-    // if there are no children in this select, we add a dummy row so that at least something appears
-    if (numChildren == 0) {
-      aFunction.call(this, {label: ""}, {isGroup: false}, parent);
-    }
-
-    for (let i = 0; i < numChildren; i++) {
-      let child = children[i];
-      let style = window.getComputedStyle(child, null);
-      if (style.display !== "none") {
-        if (child instanceof HTMLOptionElement ||
-            child instanceof Ci.nsIDOMXULSelectControlItemElement) {
-          aFunction.call(this, child, {isGroup: false}, parent);
-        } else if (child instanceof HTMLOptGroupElement) {
-          aFunction.call(this, child, {isGroup: true});
-          this.forVisibleOptions(child, aFunction, child);
-        }
-      }
-    }
-  },
-
-  fireOnChange: function(element) {
-    let event = element.ownerDocument.createEvent("Events");
-    event.initEvent("change", true, true, element.defaultView, 0,
-        false, false, false, false, null);
-    setTimeout(function() {
-      element.dispatchEvent(event);
-    }, 0);
-  },
-
-  fireOnCommand: function(element) {
-    let event = element.ownerDocument.createEvent("XULCommandEvent");
-    event.initCommandEvent("command", true, true, element.defaultView, 0,
-        false, false, false, false, null);
-    setTimeout(function() {
-      element.dispatchEvent(event);
-    }, 0);
-  },
-
-  _isDisabledElement : function(element) {
-    let currentElement = element;
-    while (currentElement) {
-      // Must test with === in case a form has a field named "disabled". See bug 1263589.
-      if (currentElement.disabled === true) {
-        return true;
-      }
-      currentElement = currentElement.parentElement;
-    }
-    return false;
-  }
-};
diff --git a/mobile/android/chrome/content/WebcompatReporter.js b/mobile/android/chrome/content/WebcompatReporter.js
deleted file mode 100644
index 66aefdda0..000000000
--- a/mobile/android/chrome/content/WebcompatReporter.js
+++ /dev/null
@@ -1,144 +0,0 @@
-/* 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/. */
-
-var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
-                                  "resource://gre/modules/PrivateBrowsingUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-var WebcompatReporter = {
-  menuItem: null,
-  menuItemEnabled: null,
-  init: function() {
-    Services.obs.addObserver(this, "DesktopMode:Change", false);
-    Services.obs.addObserver(this, "chrome-document-global-created", false);
-    Services.obs.addObserver(this, "content-document-global-created", false);
-
-    let visible = true;
-    if ("@mozilla.org/parental-controls-service;1" in Cc) {
-      let pc = Cc["@mozilla.org/parental-controls-service;1"].createInstance(Ci.nsIParentalControlsService);
-      visible = !pc.parentalControlsEnabled;
-    }
-
-    this.addMenuItem(visible);
-  },
-
-  observe: function(subject, topic, data) {
-    if (topic == "content-document-global-created" || topic == "chrome-document-global-created") {
-      let win = subject;
-      let currentURI = win.document.documentURI;
-
-      // Ignore non top-level documents
-      if (currentURI !== win.top.location.href) {
-        return;
-      }
-
-      if (!this.menuItemEnabled && this.isReportableUrl(currentURI)) {
-        NativeWindow.menu.update(this.menuItem, {enabled: true});
-        this.menuItemEnabled = true;
-      } else if (this.menuItemEnabled && !this.isReportableUrl(currentURI)) {
-        NativeWindow.menu.update(this.menuItem, {enabled: false});
-        this.menuItemEnabled = false;
-      }
-    } else if (topic === "DesktopMode:Change") {
-      let args = JSON.parse(data);
-      let tab = BrowserApp.getTabForId(args.tabId);
-      let currentURI = tab.browser.currentURI.spec;
-      if (args.desktopMode && this.isReportableUrl(currentURI)) {
-        this.reportDesktopModePrompt(tab);
-      }
-    }
-  },
-
-  addMenuItem: function(visible) {
-    this.menuItem = NativeWindow.menu.add({
-      name: this.strings.GetStringFromName("webcompat.menu.name"),
-      callback: () => {
-        Promise.resolve(BrowserApp.selectedTab).then(this.getScreenshot)
-                                               .then(this.reportIssue)
-                                               .catch(Cu.reportError);
-      },
-      enabled: false,
-      visible: visible,
-    });
-  },
-
-  getScreenshot: (tab) => {
-    return new Promise((resolve) => {
-      try {
-        let win = tab.window;
-        let dpr = win.devicePixelRatio;
-        let canvas = win.document.createElement("canvas");
-        let ctx = canvas.getContext("2d");
-        // Grab the visible viewport coordinates
-        let x = win.document.documentElement.scrollLeft;
-        let y = win.document.documentElement.scrollTop;
-        let w = win.innerWidth;
-        let h = win.innerHeight;
-        // Scale according to devicePixelRatio and coordinates
-        canvas.width = dpr * w;
-        canvas.height = dpr * h;
-        ctx.scale(dpr, dpr);
-        ctx.drawWindow(win, x, y, w, h, '#ffffff');
-        let screenshot = canvas.toDataURL();
-        resolve({tab: tab, data: screenshot});
-      } catch (e) {
-        // drawWindow can fail depending on memory or surface size. Rather than reject here,
-        // we resolve the URL so the user can continue to file an issue without a screenshot.
-        Cu.reportError("WebCompatReporter: getting a screenshot failed: " + e);
-        resolve({tab: tab});
-      }
-    });
-  },
-
-  isReportableUrl: function(url) {
-    return url && !(url.startsWith("about") ||
-                    url.startsWith("chrome") ||
-                    url.startsWith("file") ||
-                    url.startsWith("resource"));
-  },
-
-  reportDesktopModePrompt: function(tab) {
-    let message = this.strings.GetStringFromName("webcompat.reportDesktopMode.message");
-    let options = {
-      action: {
-        label: this.strings.GetStringFromName("webcompat.reportDesktopModeYes.label"),
-        callback: () => this.reportIssue({tab: tab})
-      }
-    };
-    Snackbars.show(message, Snackbars.LENGTH_LONG, options);
-  },
-
-  reportIssue: (tabData) => {
-    return new Promise((resolve) => {
-      const WEBCOMPAT_ORIGIN = "https://webcompat.com";
-      let url = tabData.tab.browser.currentURI.spec
-      let webcompatURL = `${WEBCOMPAT_ORIGIN}/issues/new?url=${url}`;
-
-      if (tabData.data && typeof tabData.data === "string") {
-        BrowserApp.deck.addEventListener("DOMContentLoaded", function sendDataToTab(event) {
-          BrowserApp.deck.removeEventListener("DOMContentLoaded", sendDataToTab, false);
-
-          if (event.target.defaultView.location.origin === WEBCOMPAT_ORIGIN) {
-            // Waive Xray vision so event.origin is not chrome://browser on the other side.
-            let win = Cu.waiveXrays(event.target.defaultView);
-            win.postMessage(tabData.data, WEBCOMPAT_ORIGIN);
-          }
-        }, false);
-      }
-
-      let isPrivateTab = PrivateBrowsingUtils.isBrowserPrivate(tabData.tab.browser);
-      BrowserApp.addTab(webcompatURL, {parentId: tabData.tab.id, isPrivate: isPrivateTab});
-      resolve();
-    });
-  }
-};
-
-XPCOMUtils.defineLazyGetter(WebcompatReporter, "strings", function() {
-  return Services.strings.createBundle("chrome://browser/locale/webcompatReporter.properties");
-});
diff --git a/mobile/android/chrome/content/WebrtcUI.js b/mobile/android/chrome/content/WebrtcUI.js
deleted file mode 100644
index 475d05bd2..000000000
--- a/mobile/android/chrome/content/WebrtcUI.js
+++ /dev/null
@@ -1,302 +0,0 @@
-/* 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/. */
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["WebrtcUI"];
-
-XPCOMUtils.defineLazyModuleGetter(this, "Notifications", "resource://gre/modules/Notifications.jsm");
-XPCOMUtils.defineLazyServiceGetter(this, "ParentalControls", "@mozilla.org/parental-controls-service;1", "nsIParentalControlsService");
-XPCOMUtils.defineLazyModuleGetter(this, "RuntimePermissions", "resource://gre/modules/RuntimePermissions.jsm");
-
-var WebrtcUI = {
-  _notificationId: null,
-
-  // Add-ons can override stock permission behavior by doing:
-  //
-  //   var stockObserve = WebrtcUI.observe;
-  //
-  //   webrtcUI.observe = function(aSubject, aTopic, aData) {
-  //     switch (aTopic) {
-  //      case "PeerConnection:request": {
-  //        // new code.
-  //        break;
-  //      ...
-  //      default:
-  //        return stockObserve.call(this, aSubject, aTopic, aData);
-  //
-  // See browser/modules/webrtcUI.jsm for details.
-
-  observe: function(aSubject, aTopic, aData) {
-    if (aTopic === "getUserMedia:request") {
-      RuntimePermissions
-        .waitForPermissions(this._determineNeededRuntimePermissions(aSubject))
-        .then((permissionGranted) => {
-          if (permissionGranted) {
-            WebrtcUI.handleGumRequest(aSubject, aTopic, aData);
-          } else {
-            Services.obs.notifyObservers(null, "getUserMedia:response:deny", aSubject.callID);
-          }});
-    } else if (aTopic === "PeerConnection:request") {
-      this.handlePCRequest(aSubject, aTopic, aData);
-    } else if (aTopic === "recording-device-events") {
-      switch (aData) {
-        case "shutdown":
-        case "starting":
-          this.notify();
-          break;
-      }
-    } else if (aTopic === "VideoCapture:Paused") {
-      if (this._notificationId) {
-        Notifications.cancel(this._notificationId);
-        this._notificationId = null;
-      }
-    } else if (aTopic === "VideoCapture:Resumed") {
-      this.notify();
-    }
-  },
-
-  notify: function() {
-    let windows = MediaManagerService.activeMediaCaptureWindows;
-    let count = windows.length;
-    let msg = {};
-    if (count == 0) {
-      if (this._notificationId) {
-        Notifications.cancel(this._notificationId);
-        this._notificationId = null;
-      }
-    } else {
-      let notificationOptions = {
-        title: Strings.brand.GetStringFromName("brandShortName"),
-        when: null, // hide the date row
-        light: [0xFF9500FF, 1000, 1000],
-        ongoing: true
-      };
-
-      let cameraActive = false;
-      let audioActive = false;
-      for (let i = 0; i < count; i++) {
-        let win = windows.queryElementAt(i, Ci.nsIDOMWindow);
-        let hasAudio = {};
-        let hasVideo = {};
-        MediaManagerService.mediaCaptureWindowState(win, hasVideo, hasAudio);
-        if (hasVideo.value) cameraActive = true;
-        if (hasAudio.value) audioActive = true;
-      }
-
-      if (cameraActive && audioActive) {
-        notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingCameraAndMicrophone.message2");
-        notificationOptions.icon = "drawable:alert_mic_camera";
-      } else if (cameraActive) {
-        notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingCamera.message2");
-        notificationOptions.icon = "drawable:alert_camera";
-      } else if (audioActive) {
-        notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingMicrophone.message2");
-        notificationOptions.icon = "drawable:alert_mic";
-      } else {
-        // somethings wrong. lets throw
-        throw "Couldn't find any cameras or microphones being used"
-      }
-
-      if (this._notificationId)
-          Notifications.update(this._notificationId, notificationOptions);
-      else
-        this._notificationId = Notifications.create(notificationOptions);
-      if (count > 1)
-        msg.count = count;
-    }
-  },
-
-  handlePCRequest: function handlePCRequest(aSubject, aTopic, aData) {
-    aSubject = aSubject.wrappedJSObject;
-    let { callID } = aSubject;
-    // Also available: windowID, isSecure, innerWindowID. For contentWindow do:
-    //
-    //   let contentWindow = Services.wm.getOuterWindowWithId(windowID);
-
-    Services.obs.notifyObservers(null, "PeerConnection:response:allow", callID);
-  },
-
-  handleGumRequest: function handleGumRequest(aSubject, aTopic, aData) {
-    let constraints = aSubject.getConstraints();
-    let contentWindow = Services.wm.getOuterWindowWithId(aSubject.windowID);
-
-    contentWindow.navigator.mozGetUserMediaDevices(
-      constraints,
-      function (devices) {
-        if (!ParentalControls.isAllowed(ParentalControls.CAMERA_MICROPHONE)) {
-          Services.obs.notifyObservers(null, "getUserMedia:response:deny", aSubject.callID);
-          WebrtcUI.showBlockMessage(devices);
-          return;
-        }
-
-        WebrtcUI.prompt(contentWindow, aSubject.callID, constraints.audio,
-                        constraints.video, devices);
-      },
-      function (error) {
-        Cu.reportError(error);
-      },
-      aSubject.innerWindowID,
-      aSubject.callID);
-  },
-
-  getDeviceButtons: function(audioDevices, videoDevices, aCallID, aUri) {
-    return [{
-      label: Strings.browser.GetStringFromName("getUserMedia.denyRequest.label"),
-      callback: function() {
-        Services.obs.notifyObservers(null, "getUserMedia:response:deny", aCallID);
-      }
-    },
-    {
-      label: Strings.browser.GetStringFromName("getUserMedia.shareRequest.label"),
-      callback: function(checked /* ignored */, inputs) {
-        let allowedDevices = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
-
-        let audioId = 0;
-        if (inputs && inputs.audioDevice != undefined)
-          audioId = inputs.audioDevice;
-        if (audioDevices[audioId])
-          allowedDevices.appendElement(audioDevices[audioId], /*weak =*/ false);
-
-        let videoId = 0;
-        if (inputs && inputs.videoSource != undefined)
-          videoId = inputs.videoSource;
-        if (videoDevices[videoId]) {
-          allowedDevices.appendElement(videoDevices[videoId], /*weak =*/ false);
-          let perms = Services.perms;
-          // Although the lifetime is "session" it will be removed upon
-          // use so it's more of a one-shot.
-          perms.add(aUri, "MediaManagerVideo", perms.ALLOW_ACTION, perms.EXPIRE_SESSION);
-        }
-
-        Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow", aCallID);
-      },
-      positive: true
-    }];
-  },
-
-  _determineNeededRuntimePermissions: function(aSubject) {
-    let permissions = [];
-
-    let constraints = aSubject.getConstraints();
-    if (constraints.video) {
-      permissions.push(RuntimePermissions.CAMERA);
-    }
-    if (constraints.audio) {
-      permissions.push(RuntimePermissions.RECORD_AUDIO);
-    }
-
-    return permissions;
-  },
-
-  // Get a list of string names for devices. Ensures that none of the strings are blank
-  _getList: function(aDevices, aType) {
-    let defaultCount = 0;
-    return aDevices.map(function(device) {
-        // if this is a Camera input, convert the name to something readable
-        let res = /Camera\ \d+,\ Facing (front|back)/.exec(device.name);
-        if (res)
-          return Strings.browser.GetStringFromName("getUserMedia." + aType + "." + res[1] + "Camera");
-
-        if (device.name.startsWith("&") && device.name.endsWith(";"))
-          return Strings.browser.GetStringFromName(device.name.substring(1, device.name.length -1));
-
-        if (device.name.trim() == "") {
-          defaultCount++;
-          return Strings.browser.formatStringFromName("getUserMedia." + aType + ".default", [defaultCount], 1);
-        }
-        return device.name
-      }, this);
-  },
-
-  _addDevicesToOptions: function(aDevices, aType, aOptions) {
-    if (aDevices.length) {
-
-      // Filter out empty items from the list
-      let list = this._getList(aDevices, aType);
-
-      if (list.length > 0) {
-        aOptions.inputs.push({
-          id: aType,
-          type: "menulist",
-          label: Strings.browser.GetStringFromName("getUserMedia." + aType + ".prompt"),
-          values: list
-        });
-
-      }
-    }
-  },
-
-  showBlockMessage: function(aDevices) {
-    let microphone = false;
-    let camera = false;
-
-    for (let device of aDevices) {
-      device = device.QueryInterface(Ci.nsIMediaDevice);
-      if (device.type == "audio") {
-        microphone = true;
-      } else if (device.type == "video") {
-        camera = true;
-      }
-    }
-
-    let message;
-    if (microphone && !camera) {
-      message = Strings.browser.GetStringFromName("getUserMedia.blockedMicrophoneAccess");
-    } else if (camera && !microphone) {
-      message = Strings.browser.GetStringFromName("getUserMedia.blockedCameraAccess");
-    } else {
-      message = Strings.browser.GetStringFromName("getUserMedia.blockedCameraAndMicrophoneAccess");
-    }
-
-    NativeWindow.doorhanger.show(message, "webrtc-blocked", [], BrowserApp.selectedTab.id, {});
-  },
-
-  prompt: function prompt(aContentWindow, aCallID, aAudioRequested,
-                          aVideoRequested, aDevices) {
-    let audioDevices = [];
-    let videoDevices = [];
-    for (let device of aDevices) {
-      device = device.QueryInterface(Ci.nsIMediaDevice);
-      switch (device.type) {
-      case "audio":
-        if (aAudioRequested)
-          audioDevices.push(device);
-        break;
-      case "video":
-        if (aVideoRequested)
-          videoDevices.push(device);
-        break;
-      }
-    }
-
-    let requestType;
-    if (audioDevices.length && videoDevices.length)
-      requestType = "CameraAndMicrophone";
-    else if (audioDevices.length)
-      requestType = "Microphone";
-    else if (videoDevices.length)
-      requestType = "Camera";
-    else
-      return;
-
-    let uri = aContentWindow.document.documentURIObject;
-    let host = uri.host;
-    let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name  + "'" : host;
-    let message = Strings.browser.formatStringFromName("getUserMedia.share" + requestType + ".message", [ requestor ], 1);
-
-    let options = { inputs: [] };
-    if (videoDevices.length > 1 || audioDevices.length > 0) {
-      // videoSource is both the string used for l10n lookup and the object that will be returned
-      this._addDevicesToOptions(videoDevices, "videoSource", options);
-    }
-
-    if (audioDevices.length > 1 || videoDevices.length > 0) {
-      this._addDevicesToOptions(audioDevices, "audioDevice", options);
-    }
-
-    let buttons = this.getDeviceButtons(audioDevices, videoDevices, aCallID, uri);
-
-    NativeWindow.doorhanger.show(message, "webrtc-request", buttons, BrowserApp.selectedTab.id, options, "WEBRTC");
-  }
-}
diff --git a/mobile/android/chrome/content/about.js b/mobile/android/chrome/content/about.js
deleted file mode 100644
index 8c9acdf8a..000000000
--- a/mobile/android/chrome/content/about.js
+++ /dev/null
@@ -1,151 +0,0 @@
-/* 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/. */
-
-var Ci = Components.interfaces, Cc = Components.classes, Cu = Components.utils, Cr = Components.results;
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-
-function init() {
-  // Include the build date and a warning about Telemetry
-  // if this is an "a#" (nightly or aurora) build
-#expand const version = "__MOZ_APP_VERSION_DISPLAY__";
-  if (/a\d+$/.test(version)) {
-    let buildID = Services.appinfo.appBuildID;
-    let buildDate = buildID.slice(0, 4) + "-" + buildID.slice(4, 6) + "-" + buildID.slice(6, 8);
-    let br = document.createElement("br");
-    let versionPara = document.getElementById("version");
-    versionPara.appendChild(br);
-    let date = document.createTextNode("(" + buildDate + ")");
-    versionPara.appendChild(date);
-    document.getElementById("telemetry").hidden = false;
-  }
-
-  // Include the Distribution information if available
-  try {
-    let distroId = Services.prefs.getCharPref("distribution.id");
-    if (distroId) {
-      let distroVersion = Services.prefs.getCharPref("distribution.version");
-      let distroIdField = document.getElementById("distributionID");
-      distroIdField.textContent = distroId + " - " + distroVersion;
-      distroIdField.hidden = false;
-
-      let distroAbout = Services.prefs.getComplexValue("distribution.about", Ci.nsISupportsString);
-      let distroField = document.getElementById("distributionAbout");
-      distroField.textContent = distroAbout;
-      distroField.hidden = false;
-    }
-  } catch (e) {
-    // Pref is unset
-  }
-
-  // get URLs from prefs
-  try {
-    let formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
-
-    let links = [
-      {id: "releaseNotesURL", pref: "app.releaseNotesURL"},
-      {id: "supportURL",      pref: "app.supportURL"},
-      {id: "faqURL",          pref: "app.faqURL"},
-      {id: "privacyURL",      pref: "app.privacyURL"},
-      {id: "creditsURL",      pref: "app.creditsURL"},
-    ];
-
-    links.forEach(function(link) {
-      let url = formatter.formatURLPref(link.pref);
-      let element = document.getElementById(link.id);
-      element.setAttribute("href", url);
-    });
-  } catch (ex) {}
-
-#ifdef MOZ_UPDATER
-  let Updater = {
-    update: null,
-
-    init: function() {
-      Services.obs.addObserver(this, "Update:CheckResult", false);
-    },
-
-    observe: function(aSubject, aTopic, aData) {
-      if (aTopic == "Update:CheckResult") {
-        showUpdateMessage(aData);
-      }
-    },
-  };
-
-  Updater.init();
-
-  function checkForUpdates() {
-    showCheckingMessage();
-
-    Services.androidBridge.handleGeckoMessage({ type: "Update:Check" });
-  }
-
-  function downloadUpdate() {
-    Services.androidBridge.handleGeckoMessage({ type: "Update:Download" });
-  }
-
-  function installUpdate() {
-    showCheckAction();
-
-    Services.androidBridge.handleGeckoMessage({ type: "Update:Install" });
-  }
-
-  let updateLink = document.getElementById("updateLink");
-  let checkingSpan = document.getElementById("update-message-checking");
-  let noneSpan = document.getElementById("update-message-none");
-  let foundSpan = document.getElementById("update-message-found");
-  let downloadingSpan = document.getElementById("update-message-downloading");
-  let downloadedSpan = document.getElementById("update-message-downloaded");
-
-  updateLink.onclick = checkForUpdates;
-  foundSpan.onclick = downloadUpdate;
-  downloadedSpan.onclick = installUpdate;
-
-  function showCheckAction() {
-    checkingSpan.style.display = "none";
-    noneSpan.style.display = "none";
-    foundSpan.style.display = "none";
-    downloadingSpan.style.display = "none";
-    downloadedSpan.style.display = "none";
-    updateLink.style.display = "block";
-  }
-
-  function showCheckingMessage() {
-    updateLink.style.display = "none";
-    noneSpan.style.display = "none";
-    foundSpan.style.display = "none";
-    downloadingSpan.style.display = "none";
-    downloadedSpan.style.display = "none";
-    checkingSpan.style.display = "block";
-  }
-
-  function showUpdateMessage(aResult) {
-    updateLink.style.display = "none";
-    checkingSpan.style.display = "none";
-    noneSpan.style.display = "none";
-    foundSpan.style.display = "none";
-    downloadingSpan.style.display = "none";
-    downloadedSpan.style.display = "none";
-
-    // the aResult values come from mobile/android/base/UpdateServiceHelper.java
-    switch (aResult) {
-      case "NOT_AVAILABLE":
-        noneSpan.style.display = "block";
-        setTimeout(showCheckAction, 2000);
-        break;
-      case "AVAILABLE":
-        foundSpan.style.display = "block";
-        break;
-      case "DOWNLOADING":
-        downloadingSpan.style.display = "block";
-        break;
-      case "DOWNLOADED":
-        downloadedSpan.style.display = "block";
-        break;
-    }
-  }
-#endif
-}
-
-document.addEventListener("DOMContentLoaded", init, false);
diff --git a/mobile/android/chrome/content/about.xhtml b/mobile/android/chrome/content/about.xhtml
deleted file mode 100644
index 8a4c28357..000000000
--- a/mobile/android/chrome/content/about.xhtml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html [
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
-%globalDTD;
-<!ENTITY % fennecDTD SYSTEM "chrome://browser/locale/about.dtd">
-%fennecDTD;
-]>
-
-<!-- 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 name="viewport" content="width=480; initial-scale=.6667; user-scalable=no"/>
-  <title>&aboutPage.title;</title>
-  <link rel="stylesheet" href="chrome://browser/skin/aboutPage.css" type="text/css"/>
-  <link rel="icon" type="image/png" sizes="64x64" href="chrome://branding/content/favicon64.png" />
-</head>
-
-<body dir="&locale.dir;">
-  <div id="header">
-    <div id="wordmark"></div>
-#expand <p id="version">__MOZ_APP_VERSION_DISPLAY__</p>
-  </div>
-
-  <div id="banner">
-    <div id="logo"/>
-#ifdef MOZ_UPDATER
-    <div id="updateBox">
-      <a id="updateLink" href="">&aboutPage.checkForUpdates.link;</a>
-      <span id="update-message-checking">&aboutPage.checkForUpdates.checking;</span>
-      <span id="update-message-none">&aboutPage.checkForUpdates.none;</span>
-      <span id="update-message-found">&aboutPage.checkForUpdates.available2;</span>
-      <span id="update-message-downloading">&aboutPage.checkForUpdates.downloading;</span>
-      <span id="update-message-downloaded">&aboutPage.checkForUpdates.downloaded2;</span>
-    </div>
-#endif
-
-    <div id="messages">
-      <p id="distributionAbout" hidden="true"/>
-      <p id="distributionID" hidden="true"/>
-      <p id="telemetry" hidden="true">
-        &aboutPage.warningVersion;
-#ifdef MOZ_TELEMETRY_ON_BY_DEFAULT
-        &aboutPage.telemetryStart;<a href="https://www.mozilla.org/">&aboutPage.telemetryMozillaLink;</a>&aboutPage.telemetryEnd;
-#endif
-      </p>
-    </div>
-
-  </div>
-
-    <ul id="aboutLinks">
-      <div class="top-border"></div>
-      <li><a id="faqURL">&aboutPage.faq.label;</a></li>
-      <li><a id="supportURL">&aboutPage.support.label;</a></li>
-      <li><a id="privacyURL">&aboutPage.privacyPolicy.label;</a></li>
-      <li><a href="about:rights">&aboutPage.rights.label;</a></li>
-      <li><a id="releaseNotesURL">&aboutPage.relNotes.label;</a></li>
-      <li><a id="creditsURL">&aboutPage.credits.label;</a></li>
-      <li><a href="about:license">&aboutPage.license.label;</a></li>
-      <div class="bottom-border"></div>
-    </ul>
-
-#ifdef RELEASE_OR_BETA
-    <div id="aboutDetails">
-      <p>&aboutPage.logoTrademark;</p>
-    </div>
-#endif
-
-    <script type="application/javascript;version=1.8" src="chrome://browser/content/about.js" />
-
-</body>
-</html>
diff --git a/mobile/android/chrome/content/aboutAddons.js b/mobile/android/chrome/content/aboutAddons.js
deleted file mode 100644
index becf56a32..000000000
--- a/mobile/android/chrome/content/aboutAddons.js
+++ /dev/null
@@ -1,609 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-/*globals gChromeWin */
-
-var Ci = Components.interfaces, Cc = Components.classes, Cu = Components.utils;
-
-Cu.import("resource://gre/modules/Services.jsm")
-Cu.import("resource://gre/modules/AddonManager.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-const AMO_ICON = "chrome://browser/skin/images/amo-logo.png";
-
-var gStringBundle = Services.strings.createBundle("chrome://browser/locale/aboutAddons.properties");
-
-XPCOMUtils.defineLazyGetter(window, "gChromeWin", function() {
-  return window.QueryInterface(Ci.nsIInterfaceRequestor)
-           .getInterface(Ci.nsIWebNavigation)
-           .QueryInterface(Ci.nsIDocShellTreeItem)
-           .rootTreeItem
-           .QueryInterface(Ci.nsIInterfaceRequestor)
-           .getInterface(Ci.nsIDOMWindow)
-           .QueryInterface(Ci.nsIDOMChromeWindow);
-});
-XPCOMUtils.defineLazyModuleGetter(window, "Preferences",
-                                  "resource://gre/modules/Preferences.jsm");
-
-var ContextMenus = {
-  target: null,
-
-  init: function() {
-    document.addEventListener("contextmenu", this, false);
-
-    document.getElementById("contextmenu-enable").addEventListener("click", ContextMenus.enable.bind(this), false);
-    document.getElementById("contextmenu-disable").addEventListener("click", ContextMenus.disable.bind(this), false);
-    document.getElementById("contextmenu-uninstall").addEventListener("click", ContextMenus.uninstall.bind(this), false);
-
-    // XXX - Hack to fix bug 985867 for now
-    document.addEventListener("touchstart", function() { });
-  },
-
-  handleEvent: function(event) {
-    // store the target of context menu events so that we know which app to act on
-    this.target = event.target;
-    while (!this.target.hasAttribute("contextmenu")) {
-      this.target = this.target.parentNode;
-    }
-
-    if (!this.target) {
-      document.getElementById("contextmenu-enable").setAttribute("hidden", "true");
-      document.getElementById("contextmenu-disable").setAttribute("hidden", "true");
-      document.getElementById("contextmenu-uninstall").setAttribute("hidden", "true");
-      return;
-    }
-
-    let addon = this.target.addon;
-    if (addon.scope == AddonManager.SCOPE_APPLICATION) {
-      document.getElementById("contextmenu-uninstall").setAttribute("hidden", "true");
-    } else {
-      document.getElementById("contextmenu-uninstall").removeAttribute("hidden");
-    }
-
-    // Hide the enable/disable context menu items if the add-on was disabled by
-    // Firefox (e.g. unsigned or blocklisted add-on).
-    if (addon.appDisabled) {
-      document.getElementById("contextmenu-enable").setAttribute("hidden", "true");
-      document.getElementById("contextmenu-disable").setAttribute("hidden", "true");
-      return;
-    }
-
-    let enabled = this.target.getAttribute("isDisabled") != "true";
-    if (enabled) {
-      document.getElementById("contextmenu-enable").setAttribute("hidden", "true");
-      document.getElementById("contextmenu-disable").removeAttribute("hidden");
-    } else {
-      document.getElementById("contextmenu-enable").removeAttribute("hidden");
-      document.getElementById("contextmenu-disable").setAttribute("hidden", "true");
-    }
-  },
-
-  enable: function(event) {
-    Addons.setEnabled(true, this.target.addon);
-    this.target = null;
-  },
-
-  disable: function (event) {
-    Addons.setEnabled(false, this.target.addon);
-    this.target = null;
-  },
-
-  uninstall: function (event) {
-    Addons.uninstall(this.target.addon);
-    this.target = null;
-  }
-}
-
-function init() {
-  window.addEventListener("popstate", onPopState, false);
-
-  AddonManager.addInstallListener(Addons);
-  AddonManager.addAddonListener(Addons);
-  Addons.init();
-  showList();
-  ContextMenus.init();
-}
-
-
-function uninit() {
-  AddonManager.removeInstallListener(Addons);
-  AddonManager.removeAddonListener(Addons);
-}
-
-function openLink(url) {
-  let BrowserApp = gChromeWin.BrowserApp;
-  BrowserApp.addTab(url, { selected: true, parentId: BrowserApp.selectedTab.id });
-}
-
-function onPopState(aEvent) {
-  // Called when back/forward is used to change the state of the page
-  if (aEvent.state) {
-    // Show the detail page for an addon
-    Addons.showDetails(Addons._getElementForAddon(aEvent.state.id));
-  } else {
-    // Clear any previous detail addon
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    detailItem.addon = null;
-
-    showList();
-  }
-}
-
-function showList() {
-  // Hide the detail page and show the list
-  let details = document.querySelector("#addons-details");
-  details.style.display = "none";
-  let list = document.querySelector("#addons-list");
-  list.style.display = "block";
-  document.documentElement.removeAttribute("details");
-}
-
-var Addons = {
-  _restartCount: 0,
-
-  _createItem: function _createItem(aAddon) {
-    let outer = document.createElement("div");
-    outer.setAttribute("addonID", aAddon.id);
-    outer.className = "addon-item list-item";
-    outer.setAttribute("role", "button");
-    outer.setAttribute("contextmenu", "addonmenu");
-    outer.addEventListener("click", function() {
-      this.showDetails(outer);
-      history.pushState({ id: aAddon.id }, document.title);
-    }.bind(this), true);
-
-    let img = document.createElement("img");
-    img.className = "icon";
-    img.setAttribute("src", aAddon.iconURL || AMO_ICON);
-    outer.appendChild(img);
-
-    let inner = document.createElement("div");
-    inner.className = "inner";
-
-    let details = document.createElement("div");
-    details.className = "details";
-    inner.appendChild(details);
-
-    let titlePart = document.createElement("div");
-    titlePart.textContent = aAddon.name;
-    titlePart.className = "title";
-    details.appendChild(titlePart);
-
-    let versionPart = document.createElement("div");
-    versionPart.textContent = aAddon.version;
-    versionPart.className = "version";
-    details.appendChild(versionPart);
-
-    if ("description" in aAddon) {
-      let descPart = document.createElement("div");
-      descPart.textContent = aAddon.description;
-      descPart.className = "description";
-      inner.appendChild(descPart);
-    }
-
-    outer.appendChild(inner);
-    return outer;
-  },
-
-  _createBrowseItem: function _createBrowseItem() {
-    let outer = document.createElement("div");
-    outer.className = "addon-item list-item";
-    outer.setAttribute("role", "button");
-    outer.addEventListener("click", function(event) {
-      try {
-        let formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
-        openLink(formatter.formatURLPref("extensions.getAddons.browseAddons"));
-      } catch (e) {
-        Cu.reportError(e);
-      }
-    }, true);
-
-    let img = document.createElement("img");
-    img.className = "icon";
-    img.setAttribute("src", AMO_ICON);
-    outer.appendChild(img);
-
-    let inner = document.createElement("div");
-    inner.className = "inner";
-
-    let title = document.createElement("div");
-    title.id = "browse-title";
-    title.className = "title";
-    title.textContent = gStringBundle.GetStringFromName("addons.browseAll");
-    inner.appendChild(title);
-
-    outer.appendChild(inner);
-    return outer;
-  },
-
-  _createItemForAddon: function _createItemForAddon(aAddon) {
-    let appManaged = (aAddon.scope == AddonManager.SCOPE_APPLICATION);
-    let opType = this._getOpTypeForOperations(aAddon.pendingOperations);
-    let updateable = (aAddon.permissions & AddonManager.PERM_CAN_UPGRADE) > 0;
-    let uninstallable = (aAddon.permissions & AddonManager.PERM_CAN_UNINSTALL) > 0;
-
-    // TODO(matt): Add support for OPTIONS_TYPE_INLINE_BROWSER once bug 1302504 lands.
-    let optionsURL;
-    switch (aAddon.optionsType) {
-      case AddonManager.OPTIONS_TYPE_INLINE:
-        optionsURL = aAddon.optionsURL || "";
-        break;
-      default:
-        optionsURL = "";
-    }
-
-    let blocked = "";
-    switch(aAddon.blocklistState) {
-      case Ci.nsIBlocklistService.STATE_BLOCKED:
-        blocked = "blocked";
-        break;
-      case Ci.nsIBlocklistService.STATE_SOFTBLOCKED:
-        blocked = "softBlocked";
-        break;
-      case Ci.nsIBlocklistService.STATE_OUTDATED:
-        blocked = "outdated";
-        break;
-    }
-
-    let item = this._createItem(aAddon);
-    item.setAttribute("isDisabled", !aAddon.isActive);
-    item.setAttribute("isUnsigned", aAddon.signedState <= AddonManager.SIGNEDSTATE_MISSING);
-    item.setAttribute("opType", opType);
-    item.setAttribute("updateable", updateable);
-    if (blocked)
-      item.setAttribute("blockedStatus", blocked);
-    item.setAttribute("optionsURL", optionsURL);
-    item.addon = aAddon;
-
-    return item;
-  },
-
-  _getElementForAddon: function(aKey) {
-    let list = document.getElementById("addons-list");
-    let element = list.querySelector("div[addonID=\"" + CSS.escape(aKey) + "\"]");
-    return element;
-  },
-
-  init: function init() {
-    let self = this;
-    AddonManager.getAllAddons(function(aAddons) {
-      // Clear all content before filling the addons
-      let list = document.getElementById("addons-list");
-      list.innerHTML = "";
-
-      aAddons.sort(function(a,b) {
-        return a.name.localeCompare(b.name);
-      });
-      for (let i=0; i<aAddons.length; i++) {
-        // Don't create item for system add-ons.
-        if (aAddons[i].isSystem)
-          continue;
-
-        let item = self._createItemForAddon(aAddons[i]);
-        list.appendChild(item);
-      }
-
-      // Add a "Browse all Firefox Add-ons" item to the bottom of the list.
-      let browseItem = self._createBrowseItem();
-      list.appendChild(browseItem);
-    });
-
-    document.getElementById("uninstall-btn").addEventListener("click", Addons.uninstallCurrent.bind(this), false);
-    document.getElementById("cancel-btn").addEventListener("click", Addons.cancelUninstall.bind(this), false);
-    document.getElementById("disable-btn").addEventListener("click", Addons.disable.bind(this), false);
-    document.getElementById("enable-btn").addEventListener("click", Addons.enable.bind(this), false);
-
-    document.getElementById("unsigned-learn-more").addEventListener("click", function() {
-      openLink(Services.urlFormatter.formatURLPref("app.support.baseURL") + "unsigned-addons");
-    }, false);
-  },
-
-  _getOpTypeForOperations: function _getOpTypeForOperations(aOperations) {
-    if (aOperations & AddonManager.PENDING_UNINSTALL)
-      return "needs-uninstall";
-    if (aOperations & AddonManager.PENDING_ENABLE)
-      return "needs-enable";
-    if (aOperations & AddonManager.PENDING_DISABLE)
-      return "needs-disable";
-    return "";
-  },
-
-  showDetails: function showDetails(aListItem) {
-    // This function removes and returns the text content of aNode without
-    // removing any child elements. Removing the text nodes ensures any XBL
-    // bindings apply properly.
-    function stripTextNodes(aNode) {
-      var text = "";
-      for (var i = 0; i < aNode.childNodes.length; i++) {
-        if (aNode.childNodes[i].nodeType != document.ELEMENT_NODE) {
-          text += aNode.childNodes[i].textContent;
-          aNode.removeChild(aNode.childNodes[i--]);
-        } else {
-          text += stripTextNodes(aNode.childNodes[i]);
-        }
-      }
-      return text;
-    }
-
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    detailItem.setAttribute("isDisabled", aListItem.getAttribute("isDisabled"));
-    detailItem.setAttribute("isUnsigned", aListItem.getAttribute("isUnsigned"));
-    detailItem.setAttribute("opType", aListItem.getAttribute("opType"));
-    detailItem.setAttribute("optionsURL", aListItem.getAttribute("optionsURL"));
-    let addon = detailItem.addon = aListItem.addon;
-
-    let favicon = document.querySelector("#addons-details > .addon-item .icon");
-    favicon.setAttribute("src", addon.iconURL || AMO_ICON);
-
-    detailItem.querySelector(".title").textContent = addon.name;
-    detailItem.querySelector(".version").textContent = addon.version;
-    detailItem.querySelector(".description-full").textContent = addon.description;
-    detailItem.querySelector(".status-uninstalled").textContent =
-      gStringBundle.formatStringFromName("addonStatus.uninstalled", [addon.name], 1);
-
-    let enableBtn = document.getElementById("enable-btn");
-    if (addon.appDisabled) {
-      enableBtn.setAttribute("disabled", "true");
-    } else {
-      enableBtn.removeAttribute("disabled");
-    }
-
-    let uninstallBtn = document.getElementById("uninstall-btn");
-    if (addon.scope == AddonManager.SCOPE_APPLICATION) {
-      uninstallBtn.setAttribute("disabled", "true");
-    } else {
-      uninstallBtn.removeAttribute("disabled");
-    }
-
-    let box = document.querySelector("#addons-details > .addon-item .options-box");
-    box.innerHTML = "";
-
-    // Retrieve the extensions preferences
-    try {
-      let optionsURL = aListItem.getAttribute("optionsURL");
-      let xhr = new XMLHttpRequest();
-      xhr.open("GET", optionsURL, true);
-      xhr.onload = function(e) {
-        if (xhr.responseXML) {
-          // Only allow <setting> for now
-          let settings = xhr.responseXML.querySelectorAll(":root > setting");
-          if (settings.length > 0) {
-            for (let i = 0; i < settings.length; i++) {
-              var setting = settings[i];
-              var desc = stripTextNodes(setting).trim();
-              if (!setting.hasAttribute("desc")) {
-                setting.setAttribute("desc", desc);
-              }
-              box.appendChild(setting);
-            }
-            // Send an event so add-ons can prepopulate any non-preference based
-            // settings
-            let event = document.createEvent("Events");
-            event.initEvent("AddonOptionsLoad", true, false);
-            window.dispatchEvent(event);
-          } else {
-            // Reset the options URL to hide the options header if there are no
-            // valid settings to show.
-            detailItem.setAttribute("optionsURL", "");
-          }
-
-          // Also send a notification to match the behavior of desktop Firefox
-          let id = aListItem.getAttribute("addonID");
-          Services.obs.notifyObservers(document, AddonManager.OPTIONS_NOTIFICATION_DISPLAYED, id);
-        }
-      }
-      xhr.send(null);
-    } catch (e) { }
-
-    let list = document.querySelector("#addons-list");
-    list.style.display = "none";
-    let details = document.querySelector("#addons-details");
-    details.style.display = "block";
-    document.documentElement.setAttribute("details", "true");
-  },
-
-  setEnabled: function setEnabled(aValue, aAddon) {
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    let addon = aAddon || detailItem.addon;
-    if (!addon)
-      return;
-
-    let listItem = this._getElementForAddon(addon.id);
-
-    let opType;
-    if (addon.type == "theme") {
-      if (aValue) {
-        // We can have only one theme enabled, so disable the current one if any
-        let list = document.getElementById("addons-list");
-        let item = list.firstElementChild;
-        while (item) {
-          if (item.addon && (item.addon.type == "theme") && (item.addon.isActive)) {
-            item.addon.userDisabled = true;
-            item.setAttribute("isDisabled", true);
-            break;
-          }
-          item = item.nextSibling;
-        }
-      }
-      addon.userDisabled = !aValue;
-    } else if (addon.type == "locale") {
-      addon.userDisabled = !aValue;
-    } else {
-      addon.userDisabled = !aValue;
-      opType = this._getOpTypeForOperations(addon.pendingOperations);
-
-      if ((addon.pendingOperations & AddonManager.PENDING_ENABLE) ||
-          (addon.pendingOperations & AddonManager.PENDING_DISABLE)) {
-        this.showRestart();
-      } else if (listItem && /needs-(enable|disable)/.test(listItem.getAttribute("opType"))) {
-        this.hideRestart();
-      }
-    }
-
-    if (addon == detailItem.addon) {
-      detailItem.setAttribute("isDisabled", !aValue);
-      if (opType)
-        detailItem.setAttribute("opType", opType);
-      else
-        detailItem.removeAttribute("opType");
-    }
-
-    // Sync to the list item
-    if (listItem) {
-      listItem.setAttribute("isDisabled", !aValue);
-      if (opType)
-        listItem.setAttribute("opType", opType);
-      else
-        listItem.removeAttribute("opType");
-    }
-  },
-
-  enable: function enable() {
-    this.setEnabled(true);
-  },
-
-  disable: function disable() {
-    this.setEnabled(false);
-  },
-
-  uninstallCurrent: function uninstallCurrent() {
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-
-    let addon = detailItem.addon;
-    if (!addon)
-      return;
-
-    this.uninstall(addon);
-  },
-
-  uninstall: function uninstall(aAddon) {
-    if (!aAddon) {
-      return;
-    }
-
-    let listItem = this._getElementForAddon(aAddon.id);
-    aAddon.uninstall();
-
-    if (aAddon.pendingOperations & AddonManager.PENDING_UNINSTALL) {
-      this.showRestart();
-
-      // A disabled addon doesn't need a restart so it has no pending ops and
-      // can't be cancelled
-      let opType = this._getOpTypeForOperations(aAddon.pendingOperations);
-      if (!aAddon.isActive && opType == "")
-        opType = "needs-uninstall";
-
-      detailItem.setAttribute("opType", opType);
-      listItem.setAttribute("opType", opType);
-    }
-  },
-
-  cancelUninstall: function ev_cancelUninstall() {
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    let addon = detailItem.addon;
-    if (!addon)
-      return;
-
-    addon.cancelUninstall();
-    this.hideRestart();
-
-    let opType = this._getOpTypeForOperations(addon.pendingOperations);
-    detailItem.setAttribute("opType", opType);
-
-    let listItem = this._getElementForAddon(addon.id);
-    listItem.setAttribute("opType", opType);
-  },
-
-  showRestart: function showRestart() {
-    this._restartCount++;
-    gChromeWin.XPInstallObserver.showRestartPrompt();
-  },
-
-  hideRestart: function hideRestart() {
-    this._restartCount--;
-    if (this._restartCount == 0)
-      gChromeWin.XPInstallObserver.hideRestartPrompt();
-  },
-
-  onEnabled: function(aAddon) {
-    let listItem = this._getElementForAddon(aAddon.id);
-    if (!listItem)
-      return;
-
-    // Reload the details to pick up any options now that it's enabled.
-    listItem.setAttribute("optionsURL", aAddon.optionsURL || "");
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    if (aAddon == detailItem.addon)
-      this.showDetails(listItem);
-  },
-
-  onInstallEnded: function(aInstall, aAddon) {
-    let needsRestart = false;
-    if (aInstall.existingAddon && (aInstall.existingAddon.pendingOperations & AddonManager.PENDING_UPGRADE))
-      needsRestart = true;
-    else if (aAddon.pendingOperations & AddonManager.PENDING_INSTALL)
-      needsRestart = true;
-
-    let list = document.getElementById("addons-list");
-    let element = this._getElementForAddon(aAddon.id);
-    if (!element) {
-      element = this._createItemForAddon(aAddon);
-      list.insertBefore(element, list.firstElementChild);
-    }
-
-    if (needsRestart)
-      element.setAttribute("opType", "needs-restart");
-  },
-
-  onInstalled: function(aAddon) {
-    let list = document.getElementById("addons-list");
-    let element = this._getElementForAddon(aAddon.id);
-    if (!element) {
-      element = this._createItemForAddon(aAddon);
-
-      // Themes aren't considered active on install, so set existing as disabled, and new one enabled.
-      if (aAddon.type == "theme") {
-        let item = list.firstElementChild;
-        while (item) {
-          if (item.addon && (item.addon.type == "theme")) {
-            item.setAttribute("isDisabled", true);
-          }
-          item = item.nextSibling;
-        }
-        element.setAttribute("isDisabled", false);
-      }
-
-      list.insertBefore(element, list.firstElementChild);
-    }
-  },
-
-  onUninstalled: function(aAddon) {
-    let list = document.getElementById("addons-list");
-    let element = this._getElementForAddon(aAddon.id);
-    list.removeChild(element);
-
-    // Go back if we're in the detail view of the add-on that was uninstalled.
-    let detailItem = document.querySelector("#addons-details > .addon-item");
-    if (detailItem.addon.id == aAddon.id) {
-      history.back();
-    }
-  },
-
-  onInstallFailed: function(aInstall) {
-  },
-
-  onDownloadProgress: function xpidm_onDownloadProgress(aInstall) {
-  },
-
-  onDownloadFailed: function(aInstall) {
-  },
-
-  onDownloadCancelled: function(aInstall) {
-  }
-}
-
-window.addEventListener("load", init, false);
-window.addEventListener("unload", uninit, false);
diff --git a/mobile/android/chrome/content/aboutAddons.xhtml b/mobile/android/chrome/content/aboutAddons.xhtml
deleted file mode 100644
index 42d9cfa9c..000000000
--- a/mobile/android/chrome/content/aboutAddons.xhtml
+++ /dev/null
@@ -1,63 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" [
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd" >
-%globalDTD;
-<!ENTITY % aboutDTD SYSTEM "chrome://browser/locale/aboutAddons.dtd" >
-%aboutDTD;
-]>
-
-<!-- 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>
-  <title>&aboutAddons.title2;</title>
-  <meta name="viewport" content="width=device-width; user-scalable=0" />
-  <link rel="icon" type="image/png" sizes="64x64" href="chrome://branding/content/favicon64.png" />
-  <link rel="stylesheet" href="chrome://browser/skin/aboutBase.css" type="text/css"/>
-  <link rel="stylesheet" href="chrome://browser/skin/aboutAddons.css" type="text/css"/>
-</head>
-
-<body dir="&locale.dir;">
-  <menu type="context" id="addonmenu">
-    <menuitem id="contextmenu-enable" label="&addonAction.enable;"></menuitem>
-    <menuitem id="contextmenu-disable" label="&addonAction.disable;" ></menuitem>
-    <menuitem id="contextmenu-uninstall" label="&addonAction.uninstall;" ></menuitem>
-  </menu>
-
-  <div id="addons-header" class="header">
-    <div>&aboutAddons.header2;</div>
-  </div>
-  <div id="addons-list" class="list">
-  </div>
-
-  <div id="addons-details" class="list">
-    <div class="addon-item list-item">
-      <img class="icon"/>
-      <div class="inner">
-        <div class="details">
-          <div class="title"></div><div class="version"></div>
-        </div>
-        <div class="description-full"></div>
-        <div class="options-header">&aboutAddons.options;</div>
-        <div class="options-box"></div>
-      </div>
-      <div class="warn-unsigned">&addonUnsigned.message; <a id="unsigned-learn-more">&addonUnsigned.learnMore;</a></div>
-      <div class="status status-uninstalled show-on-uninstall"></div>
-      <div class="buttons">
-        <button id="enable-btn" class="show-on-disable hide-on-enable hide-on-uninstall" >&addonAction.enable;</button>
-        <button id="disable-btn" class="show-on-enable hide-on-disable hide-on-uninstall" >&addonAction.disable;</button>
-        <button id="uninstall-btn" class="hide-on-uninstall" >&addonAction.uninstall;</button>
-        <button id="cancel-btn" class="show-on-uninstall" >&addonAction.undo;</button>
-      </div>
-    </div>
-  </div>
-
-  <script type="application/javascript;version=1.8" src="chrome://browser/content/aboutAddons.js"></script>
-</body>
-</html>
diff --git a/mobile/android/chrome/content/aboutCertError.xhtml b/mobile/android/chrome/content/aboutCertError.xhtml
deleted file mode 100644
index c5922e2fe..000000000
--- a/mobile/android/chrome/content/aboutCertError.xhtml
+++ /dev/null
@@ -1,264 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD
-    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-    "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % globalDTD
-    SYSTEM "chrome://global/locale/global.dtd">
-  %globalDTD;
-  <!ENTITY % certerrorDTD
-    SYSTEM "chrome://browser/locale/aboutCertError.dtd">
-  %certerrorDTD;
-]>
-
-<!-- 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>
-    <title>&certerror.pagetitle;</title>
-    <meta name="viewport" content="width=device-width; user-scalable=false" />
-    <link rel="stylesheet" href="chrome://global/skin/netError.css" type="text/css" media="all" />
-    <!-- This page currently uses the same favicon as neterror.xhtml.
-         If the location of the favicon is changed for both pages, the
-         FAVICON_ERRORPAGE_URL symbol in toolkit/components/places/src/nsFaviconService.h
-         should be updated. If this page starts using a different favicon
-         than neterrorm nsFaviconService->SetAndLoadFaviconForPage
-         should be updated to ignore this one as well. -->
-    <link rel="icon" type="image/png" id="favicon" sizes="64x64" href="chrome://browser/skin/images/certerror-warning.png"/>
-
-    <script type="application/javascript"><![CDATA[
-      // Error url MUST be formatted like this:
-      //   about:certerror?e=error&u=url&d=desc
-
-      // Note that this file uses document.documentURI to get
-      // the URL (with the format from above). This is because
-      // document.location.href gets the current URI off the docshell,
-      // which is the URL displayed in the location bar, i.e.
-      // the URI that the user attempted to load.
-
-      function getCSSClass()
-      {
-        var url = document.documentURI;
-        var matches = url.match(/s\=([^&]+)\&/);
-        // s is optional, if no match just return nothing
-        if (!matches || matches.length < 2)
-          return "";
-
-        // parenthetical match is the second entry
-        return decodeURIComponent(matches[1]);
-      }
-
-      function getDescription()
-      {
-        var url = document.documentURI;
-        var desc = url.search(/d\=/);
-
-        // desc == -1 if not found; if so, return an empty string
-        // instead of what would turn out to be portions of the URI
-        if (desc == -1)
-          return "";
-
-        return decodeURIComponent(url.slice(desc + 2));
-      }
-
-      function initPage()
-      {
-        // Replace the "#1" string in the intro with the hostname.  Trickier
-        // than it might seem since we want to preserve the <b> tags, but
-        // not allow for any injection by just using innerHTML.  Instead,
-        // just find the right target text node.
-        var intro = document.getElementById('introContentP1');
-        function replaceWithHost(node) {
-          if (node.textContent == "#1")
-            node.textContent = location.host;
-          else
-            for(var i = 0; i < node.childNodes.length; i++)
-              replaceWithHost(node.childNodes[i]);
-        };
-        replaceWithHost(intro);
-
-        if (getCSSClass() == "expertBadCert") {
-          toggle('technicalContent');
-          toggle('expertContent');
-        }
-
-        // Disallow overrides if this is a Strict-Transport-Security
-        // host and the cert is bad (STS Spec section 7.3) or if the
-        // certerror is in a frame (bug 633691).
-        if (getCSSClass() == "badStsCert" || window != top)
-          document.getElementById("expertContent").setAttribute("hidden", "true");
-
-        var tech = document.getElementById("technicalContentText");
-        if (tech)
-          tech.textContent = getDescription();
-
-        addDomainErrorLinks();
-      }
-
-      /* Try to preserve the links contained in the error description, like
-         the error code.
-
-         Also, in the case of SSL error pages about domain mismatch, see if
-         we can hyperlink the user to the correct site.  We don't want
-         to do this generically since it allows MitM attacks to redirect
-         users to a site under attacker control, but in certain cases
-         it is safe (and helpful!) to do so.  Bug 402210
-      */
-      function addDomainErrorLinks() {
-        // Rather than textContent, we need to treat description as HTML
-        var sd = document.getElementById("technicalContentText");
-        if (sd) {
-          var desc = getDescription();
-
-          // sanitize description text - see bug 441169
-
-          // First, find the index of the <a> tags we care about, being
-          // careful not to use an over-greedy regex.
-          var codeRe = /<a id="errorCode" title="([^"]+)">/;
-          var codeResult = codeRe.exec(desc);
-          var domainRe = /<a id="cert_domain_link" title="([^"]+)">/;
-          var domainResult = domainRe.exec(desc);
-
-          // The order of these links in the description is fixed in
-          // TransportSecurityInfo.cpp:formatOverridableCertErrorMessage.
-          var firstResult = domainResult;
-          if (!domainResult)
-            firstResult = codeResult;
-          if (!firstResult)
-            return;
-
-          // Remove sd's existing children
-          sd.textContent = "";
-
-          // Everything up to the first link should be text content.
-          sd.appendChild(document.createTextNode(desc.slice(0, firstResult.index)));
-
-          // Now create the actual links.
-          if (domainResult) {
-            createLink(sd, "cert_domain_link", domainResult[1])
-            // Append text for anything between the two links.
-            sd.appendChild(document.createTextNode(desc.slice(desc.indexOf("</a>") + "</a>".length, codeResult.index)));
-          }
-          createLink(sd, "errorCode", codeResult[1])
-
-          // Finally, append text for anything after the last closing </a>.
-          sd.appendChild(document.createTextNode(desc.slice(desc.lastIndexOf("</a>") + "</a>".length)));
-        }
-
-        // Then initialize the cert domain link.
-        var link = document.getElementById('cert_domain_link');
-        if (!link)
-          return;
-
-        var okHost = link.getAttribute("title");
-        var thisHost = document.location.hostname;
-        var proto = document.location.protocol;
-
-        // If okHost is a wildcard domain ("*.example.com") let's
-        // use "www" instead.  "*.example.com" isn't going to
-        // get anyone anywhere useful. bug 432491
-        okHost = okHost.replace(/^\*\./, "www.");
-
-        /* case #1:
-         * example.com uses an invalid security certificate.
-         *
-         * The certificate is only valid for www.example.com
-         *
-         * Make sure to include the "." ahead of thisHost so that
-         * a MitM attack on paypal.com doesn't hyperlink to "notpaypal.com"
-         *
-         * We'd normally just use a RegExp here except that we lack a
-         * library function to escape them properly (bug 248062), and
-         * domain names are famous for having '.' characters in them,
-         * which would allow spurious and possibly hostile matches.
-         */
-        if (okHost.endsWith("." + thisHost))
-          link.href = proto + okHost;
-
-        /* case #2:
-         * browser.garage.maemo.org uses an invalid security certificate.
-         *
-         * The certificate is only valid for garage.maemo.org
-         */
-        if (thisHost.endsWith("." + okHost))
-          link.href = proto + okHost;
-
-        // If we set a link, meaning there's something helpful for
-        // the user here, expand the section by default
-        if (link.href && getCSSClass() != "expertBadCert")
-          toggle("technicalContent");
-      }
-
-      function createLink(el, id, text) {
-        var anchorEl = document.createElement("a");
-        anchorEl.setAttribute("id", id);
-        anchorEl.setAttribute("title", text);
-        anchorEl.appendChild(document.createTextNode(text));
-        el.appendChild(anchorEl);
-      }
-
-      function toggle(id) {
-        var el = document.getElementById(id);
-        if (el.hasAttribute("collapsed"))
-          el.removeAttribute("collapsed");
-        else
-          el.setAttribute("collapsed", true);
-      }
-    ]]></script>
-  </head>
-
-  <body id="errorPage" class="certerror" dir="&locale.dir;">
-
-    <!-- PAGE CONTAINER (for styling purposes only) -->
-    <div id="errorPageContainer">
-
-      <!-- Error Title -->
-      <div id="errorTitle">
-        <h1 class="errorTitleText">&certerror.longpagetitle;</h1>
-      </div>
-
-      <!-- LONG CONTENT (the section most likely to require scrolling) -->
-      <div id="errorLongContent">
-        <div id="introContent">
-          <p id="introContentP1">&certerror.introPara1;</p>
-        </div>
-
-        <div id="whatShouldIDoContent">
-          <h2>&certerror.whatShouldIDo.heading;</h2>
-          <div id="whatShouldIDoContentText">
-            <p>&certerror.whatShouldIDo.content;</p>
-            <button id="getMeOutOfHereButton">&certerror.getMeOutOfHere.label;</button>
-          </div>
-        </div>
-
-        <!-- The following sections can be unhidden by default by setting the
-             "browser.xul.error_pages.expert_bad_cert" pref to true -->
-        <div id="technicalContent" collapsed="true">
-          <h2 class="expander" onclick="toggle('technicalContent');" id="technicalContentHeading">&certerror.technical.heading;</h2>
-          <p id="technicalContentText"/>
-        </div>
-
-        <div id="expertContent" collapsed="true">
-          <h2 class="expander" onclick="toggle('expertContent');" id="expertContentHeading">&certerror.expert.heading;</h2>
-          <div>
-            <p>&certerror.expert.content;</p>
-            <p>&certerror.expert.contentPara2;</p>
-            <button id="temporaryExceptionButton">&certerror.addTemporaryException.label;</button>
-            <button id="permanentExceptionButton">&certerror.addPermanentException.label;</button>
-          </div>
-        </div>
-      </div>
-    </div>
-
-    <!--
-    - Note: It is important to run the script this way, instead of using
-    - an onload handler. This is because error pages are loaded as
-    - LOAD_BACKGROUND, which means that onload handlers will not be executed.
-    -->
-    <script type="application/javascript">initPage();</script>
-
-  </body>
-</html>
diff --git a/mobile/android/chrome/content/aboutDownloads.js b/mobile/android/chrome/content/aboutDownloads.js
deleted file mode 100644
index add0a48e6..000000000
--- a/mobile/android/chrome/content/aboutDownloads.js
+++ /dev/null
@@ -1,373 +0,0 @@
-/* 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/. */
-"use strict";
-
-var Cu = Components.utils;
-
-Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
-
-XPCOMUtils.defineLazyModuleGetter(this, "Downloads", "resource://gre/modules/Downloads.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "DownloadUtils", "resource://gre/modules/DownloadUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Messaging", "resource://gre/modules/Messaging.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PluralForm", "resource://gre/modules/PluralForm.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Services", "resource://gre/modules/Services.jsm");
-
-var gStrings = Services.strings.createBundle("chrome://browser/locale/aboutDownloads.properties");
-XPCOMUtils.defineLazyGetter(this, "strings",
-                            () => Services.strings.createBundle("chrome://browser/locale/aboutDownloads.properties"));
-
-function deleteDownload(download) {
-  download.finalize(true).then(null, Cu.reportError);
-  OS.File.remove(download.target.path).then(null, ex => {
-    if (!(ex instanceof OS.File.Error && ex.becauseNoSuchFile)) {
-      Cu.reportError(ex);
-    }
-  });
-}
-
-var contextMenu = {
-  _items: [],
-  _targetDownload: null,
-
-  init: function () {
-    let element = document.getElementById("downloadmenu");
-    element.addEventListener("click",
-                             event => event.download = this._targetDownload,
-                             true);
-    this._items = [
-      new ContextMenuItem("open",
-                          download => download.succeeded,
-                          download => download.launch().then(null, Cu.reportError)),
-      new ContextMenuItem("retry",
-                          download => download.error ||
-                                      (download.canceled && !download.hasPartialData),
-                          download => download.start().then(null, Cu.reportError)),
-      new ContextMenuItem("remove",
-                          download => download.stopped,
-                          download => {
-                            Downloads.getList(Downloads.ALL)
-                                     .then(list => list.remove(download))
-                                     .then(null, Cu.reportError);
-                            deleteDownload(download);
-                          }),
-      new ContextMenuItem("pause",
-                          download => !download.stopped && download.hasPartialData,
-                          download => download.cancel().then(null, Cu.reportError)),
-      new ContextMenuItem("resume",
-                          download => download.canceled && download.hasPartialData,
-                          download => download.start().then(null, Cu.reportError)),
-      new ContextMenuItem("cancel",
-                          download => !download.stopped ||
-                                      (download.canceled && download.hasPartialData),
-                          download => {
-                            download.cancel().then(null, Cu.reportError);
-                            download.removePartialData().then(null, Cu.reportError);
-                          }),
-      // following menu item is a global action
-      new ContextMenuItem("removeall",
-                          () => downloadLists.finished.length > 0,
-                          () => downloadLists.removeFinished())
-    ];
-  },
-
-  addContextMenuEventListener: function (element) {
-    element.addEventListener("contextmenu", this.onContextMenu.bind(this));
-  },
-
-  onContextMenu: function (event) {
-    let target = event.target;
-    while (target && !target.download) {
-      target = target.parentNode;
-    }
-    if (!target) {
-      Cu.reportError("No download found for context menu target");
-      event.preventDefault();
-      return;
-    }
-
-    // capture the target download for menu items to use in a click event
-    this._targetDownload = target.download;
-    for (let item of this._items) {
-      item.updateVisibility(target.download);
-    }
-  }
-};
-
-function ContextMenuItem(name, isVisible, action) {
-  this.element = document.getElementById("contextmenu-" + name);
-  this.isVisible = isVisible;
-
-  this.element.addEventListener("click", event => action(event.download));
-}
-
-ContextMenuItem.prototype = {
-  updateVisibility: function (download) {
-    this.element.hidden = !this.isVisible(download);
-  }
-};
-
-function DownloadListView(type, listElementId) {
-  this.listElement = document.getElementById(listElementId);
-  contextMenu.addContextMenuEventListener(this.listElement);
-
-  this.items = new Map();
-
-  Downloads.getList(type)
-           .then(list => list.addView(this))
-           .then(null, Cu.reportError);
-
-  window.addEventListener("unload", event => {
-    Downloads.getList(type)
-             .then(list => list.removeView(this))
-             .then(null, Cu.reportError);
-  });
-}
-
-DownloadListView.prototype = {
-  get finished() {
-    let finished = [];
-    for (let download of this.items.keys()) {
-      if (download.stopped && (!download.hasPartialData || download.error)) {
-        finished.push(download);
-      }
-    }
-
-    return finished;
-  },
-
-  insertOrMoveItem: function (item) {
-    var compare = (a, b) => {
-      // active downloads always before stopped downloads
-      if (a.stopped != b.stopped) {
-        return b.stopped ? -1 : 1
-      }
-      // most recent downloads first
-      return b.startTime - a.startTime;
-    };
-
-    let insertLocation = this.listElement.firstChild;
-    while (insertLocation && compare(item.download, insertLocation.download) > 0) {
-      insertLocation = insertLocation.nextElementSibling;
-    }
-    this.listElement.insertBefore(item.element, insertLocation);
-  },
-
-  onDownloadAdded: function (download) {
-    let item = new DownloadItem(download);
-    this.items.set(download, item);
-    this.insertOrMoveItem(item);
-  },
-
-  onDownloadChanged: function (download) {
-    let item = this.items.get(download);
-    if (!item) {
-      Cu.reportError("No DownloadItem found for download");
-      return;
-    }
-
-    if (item.stateChanged) {
-      this.insertOrMoveItem(item);
-    }
-
-    item.onDownloadChanged();
-  },
-
-  onDownloadRemoved: function (download) {
-    let item = this.items.get(download);
-    if (!item) {
-      Cu.reportError("No DownloadItem found for download");
-      return;
-    }
-
-    this.items.delete(download);
-    this.listElement.removeChild(item.element);
-
-    Messaging.sendRequest({
-      type: "Download:Remove",
-      path: download.target.path
-    });
-  }
-};
-
-var downloadLists = {
-  init: function () {
-    this.publicDownloads = new DownloadListView(Downloads.PUBLIC, "public-downloads-list");
-    this.privateDownloads = new DownloadListView(Downloads.PRIVATE, "private-downloads-list");
-  },
-
-  get finished() {
-    return this.publicDownloads.finished.concat(this.privateDownloads.finished);
-  },
-
-  removeFinished: function () {
-    let finished = this.finished;
-    if (finished.length == 0) {
-      return;
-    }
-
-    let title = strings.GetStringFromName("downloadAction.deleteAll");
-    let messageForm = strings.GetStringFromName("downloadMessage.deleteAll");
-    let message = PluralForm.get(finished.length, messageForm).replace("#1", finished.length);
-
-    if (Services.prompt.confirm(null, title, message)) {
-      Downloads.getList(Downloads.ALL)
-               .then(list => {
-                 for (let download of finished) {
-                   list.remove(download).then(null, Cu.reportError);
-                   deleteDownload(download);
-                 }
-               }, Cu.reportError);
-    }
-  }
-};
-
-function DownloadItem(download) {
-  this._download = download;
-  this._updateFromDownload();
-
-  this._domain = DownloadUtils.getURIHost(download.source.url)[0];
-  this._fileName = this._htmlEscape(OS.Path.basename(download.target.path));
-  this._iconUrl = "moz-icon://" + this._fileName + "?size=64";
-  this._startDate = this._htmlEscape(DownloadUtils.getReadableDates(download.startTime)[0]);
-
-  this._element = this.createElement();
-}
-
-const kDownloadStatePropertyNames = [
-  "stopped",
-  "succeeded",
-  "canceled",
-  "error",
-  "startTime"
-];
-
-DownloadItem.prototype = {
-  _htmlEscape : function (s) {
-    s = s.replace(/&/g, "&amp;");
-    s = s.replace(/>/g, "&gt;");
-    s = s.replace(/</g, "&lt;");
-    s = s.replace(/"/g, "&quot;");
-    s = s.replace(/'/g, "&apos;");
-    return s;
-  },
-
-  _updateFromDownload: function () {
-    this._state = {};
-    kDownloadStatePropertyNames.forEach(
-      name => this._state[name] = this._download[name],
-      this);
-  },
-
-  get stateChanged() {
-    return kDownloadStatePropertyNames.some(
-      name => this._state[name] != this._download[name],
-      this);
-  },
-
-  get download() {
-    return this._download;
-  },
-  get element() {
-    return this._element;
-  },
-
-  createElement: function() {
-    let template = document.getElementById("download-item");
-    // TODO: use this once <template> is working
-    // let element = document.importNode(template.content, true);
-
-    // simulate a <template> node...
-    let element = template.cloneNode(true);
-    element.removeAttribute("id");
-    element.removeAttribute("style");
-
-    // launch the download if clicked
-    element.addEventListener("click", this.onClick.bind(this));
-
-    // set download as an expando property for the context menu
-    element.download = this.download;
-
-    // fill in template placeholders
-    this.updateElement(element);
-
-    return element;
-  },
-
-  updateElement: function (element) {
-    element.querySelector(".date").textContent = this.startDate;
-    element.querySelector(".domain").textContent = this.domain;
-    element.querySelector(".icon").src = this.iconUrl;
-    element.querySelector(".size").textContent = this.size;
-    element.querySelector(".state").textContent = this.stateDescription;
-    element.querySelector(".title").setAttribute("value", this.fileName);
-  },
-
-  onClick: function (event) {
-    if (this.download.succeeded) {
-      this.download.launch().then(null, Cu.reportError);
-    }
-  },
-
-  onDownloadChanged: function () {
-    this._updateFromDownload();
-    this.updateElement(this.element);
-  },
-
-  // template properties below
-  get domain() {
-    return this._domain;
-  },
-  get fileName() {
-    return this._fileName;
-  },
-  get id() {
-    return this._id;
-  },
-  get iconUrl() {
-    return this._iconUrl;
-  },
-
-  get size() {
-    if (this.download.succeeded && this.download.target.exists) {
-      return DownloadUtils.convertByteUnits(this.download.target.size).join("");
-    } else if (this.download.hasProgress) {
-      return DownloadUtils.convertByteUnits(this.download.totalBytes).join("");
-    }
-    return strings.GetStringFromName("downloadState.unknownSize");
-  },
-
-  get startDate() {
-    return this._startDate;
-  },
-
-  get stateDescription() {
-    let name;
-    if (this.download.error) {
-      name = "downloadState.failed";
-    } else if (this.download.canceled) {
-      if (this.download.hasPartialData) {
-        name = "downloadState.paused";
-      } else {
-        name = "downloadState.canceled";
-      }
-    } else if (!this.download.stopped) {
-      if (this.download.currentBytes > 0) {
-        name = "downloadState.downloading";
-      } else {
-        name = "downloadState.starting";
-      }
-    }
-
-    if (name) {
-      return strings.GetStringFromName(name);
-    }
-    return "";
-  }
-};
-
-window.addEventListener("DOMContentLoaded", event => {
-    contextMenu.init();
-    downloadLists.init()
-});
\ No newline at end of file
diff --git a/mobile/android/chrome/content/aboutDownloads.xhtml b/mobile/android/chrome/content/aboutDownloads.xhtml
deleted file mode 100644
index 6b9025694..000000000
--- a/mobile/android/chrome/content/aboutDownloads.xhtml
+++ /dev/null
@@ -1,62 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" [
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd" >
-%globalDTD;
-<!ENTITY % downloadsDTD SYSTEM "chrome://browser/locale/aboutDownloads.dtd" >
-%downloadsDTD;
-]>
-
-<!-- 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"
-      xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-<head>
-  <title>&aboutDownloads.title;</title>
-  <meta name="viewport" content="width=device-width; user-scalable=0" />
-  <link rel="icon" type="image/png" sizes="64x64" href="chrome://branding/content/favicon64.png" />
-  <link rel="stylesheet" href="chrome://browser/skin/aboutBase.css" type="text/css"/>
-  <link rel="stylesheet" href="chrome://browser/skin/aboutDownloads.css" type="text/css"/>
-</head>
-
-<body dir="&locale.dir;">
-  <menu type="context" id="downloadmenu">
-    <menuitem id="contextmenu-open" label="&aboutDownloads.open;"></menuitem>
-    <menuitem id="contextmenu-retry" label="&aboutDownloads.retry;"></menuitem>
-    <menuitem id="contextmenu-remove" label="&aboutDownloads.remove;"></menuitem>
-    <menuitem id="contextmenu-pause" label="&aboutDownloads.pause;"></menuitem>
-    <menuitem id="contextmenu-resume" label="&aboutDownloads.resume;"></menuitem>
-    <menuitem id="contextmenu-cancel" label="&aboutDownloads.cancel;"></menuitem>
-    <menuitem id="contextmenu-removeall" label="&aboutDownloads.removeAll;"></menuitem>
-  </menu>
-
-  <!--template id="download-item"-->
-    <li id="download-item" class="list-item" role="button" contextmenu="downloadmenu" style="display: none">
-      <img class="icon" src=""/>
-      <div class="details">
-        <div class="row">
-          <!-- This is a hack so that we can crop this label in its center -->
-          <xul:label class="title" crop="center" value=""/>
-          <div class="date"></div>
-        </div>
-        <div class="size"></div>
-        <div class="domain"></div>
-        <div class="state"></div>
-      </div>
-    </li>
-  <!--/template-->
-
-  <div class="header">
-    <div>&aboutDownloads.header;</div>
-  </div>
-  <ul id="private-downloads-list" class="list"></ul>
-  <ul id="public-downloads-list" class="list"></ul>
-  <span id="no-downloads-indicator">&aboutDownloads.empty;</span>
-  <script type="application/javascript;version=1.8" src="chrome://browser/content/aboutDownloads.js"/>
-</body>
-</html>
diff --git a/mobile/android/chrome/content/aboutHealthReport.js b/mobile/android/chrome/content/aboutHealthReport.js
deleted file mode 100644
index 070eb821d..000000000
--- a/mobile/android/chrome/content/aboutHealthReport.js
+++ /dev/null
@@ -1,192 +0,0 @@
-// -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
-/* 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/. */
-
-"use strict";
-
-var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/Messaging.jsm");
-Cu.import("resource://gre/modules/SharedPreferences.jsm");
-
-// Name of Android SharedPreference controlling whether to upload
-// health reports.
-const PREF_UPLOAD_ENABLED = "android.not_a_preference.healthreport.uploadEnabled";
-
-// Name of Gecko Pref specifying report content location.
-const PREF_REPORTURL = "datareporting.healthreport.about.reportUrl";
-
-// Monotonically increasing wrapper API version number.
-const WRAPPER_VERSION = 1;
-
-const EVENT_HEALTH_REQUEST = "HealthReport:Request";
-const EVENT_HEALTH_RESPONSE = "HealthReport:Response";
-
-// about:healthreport prefs are stored in Firefox's default Android
-// SharedPreferences.
-var sharedPrefs = SharedPreferences.forApp();
-
-var healthReportWrapper = {
-  init: function () {
-    let iframe = document.getElementById("remote-report");
-    iframe.addEventListener("load", healthReportWrapper.initRemotePage, false);
-    let report = this._getReportURI();
-    iframe.src = report.spec;
-    console.log("AboutHealthReport: loading content from " + report.spec);
-
-    sharedPrefs.addObserver(PREF_UPLOAD_ENABLED, this, false);
-    Services.obs.addObserver(this, EVENT_HEALTH_RESPONSE, false);
-  },
-
-  observe: function (subject, topic, data) {
-    if (topic == PREF_UPLOAD_ENABLED) {
-      this.updatePrefState();
-    } else if (topic == EVENT_HEALTH_RESPONSE) {
-      this.updatePayload(data);
-    }
-  },
-
-  uninit: function () {
-    sharedPrefs.removeObserver(PREF_UPLOAD_ENABLED, this);
-    Services.obs.removeObserver(this, EVENT_HEALTH_RESPONSE);
-  },
-
-  _getReportURI: function () {
-    let url = Services.urlFormatter.formatURLPref(PREF_REPORTURL);
-    // This handles URLs that already have query parameters.
-    let uri = Services.io.newURI(url, null, null).QueryInterface(Ci.nsIURL);
-    uri.query += ((uri.query != "") ? "&v=" : "v=") + WRAPPER_VERSION;
-    return uri;
-  },
-
-  onOptIn: function () {
-    console.log("AboutHealthReport: page sent opt-in command.");
-    sharedPrefs.setBoolPref(PREF_UPLOAD_ENABLED, true);
-    this.updatePrefState();
-  },
-
-  onOptOut: function () {
-    console.log("AboutHealthReport: page sent opt-out command.");
-    sharedPrefs.setBoolPref(PREF_UPLOAD_ENABLED, false);
-    this.updatePrefState();
-  },
-
-  updatePrefState: function () {
-    console.log("AboutHealthReport: sending pref state to page.");
-    try {
-      let prefs = {
-        enabled: sharedPrefs.getBoolPref(PREF_UPLOAD_ENABLED),
-      };
-      this.injectData("prefs", prefs);
-    } catch (e) {
-      this.reportFailure(this.ERROR_PREFS_FAILED);
-    }
-  },
-
-  refreshPayload: function () {
-    console.log("AboutHealthReport: page requested fresh payload.");
-    Messaging.sendRequest({
-      type: EVENT_HEALTH_REQUEST,
-    });
-  },
-
-  updatePayload: function (data) {
-    healthReportWrapper.injectData("payload", data);
-    // Data is supposed to be a string, so the length should be
-    // defined.  Just in case, we do this after injecting the data.
-    console.log("AboutHealthReport: sending payload to page " +
-         "(" + typeof(data) + " of length " + data.length + ").");
-  },
-
-  injectData: function (type, content) {
-    let report = this._getReportURI();
-
-    // file: URIs can't be used for targetOrigin, so we use "*" for
-    // this special case.  In all other cases, pass in the URL to the
-    // report so we properly restrict the message dispatch.
-    let reportUrl = (report.scheme == "file") ? "*" : report.spec;
-
-    let data = {
-      type: type,
-      content: content,
-    };
-
-    let iframe = document.getElementById("remote-report");
-    iframe.contentWindow.postMessage(data, reportUrl);
-  },
-
-  showSettings: function () {
-    console.log("AboutHealthReport: showing settings.");
-    Messaging.sendRequest({
-      type: "Settings:Show",
-      resource: "preferences_vendor",
-    });
-  },
-
-  launchUpdater: function () {
-    console.log("AboutHealthReport: launching updater.");
-    Messaging.sendRequest({
-      type: "Updater:Launch",
-    });
-  },
-
-  handleRemoteCommand: function (evt) {
-    switch (evt.detail.command) {
-      case "DisableDataSubmission":
-        this.onOptOut();
-        break;
-      case "EnableDataSubmission":
-        this.onOptIn();
-        break;
-      case "RequestCurrentPrefs":
-        this.updatePrefState();
-        break;
-      case "RequestCurrentPayload":
-        this.refreshPayload();
-        break;
-      case "ShowSettings":
-        this.showSettings();
-        break;
-      case "LaunchUpdater":
-        this.launchUpdater();
-        break;
-      default:
-        Cu.reportError("Unexpected remote command received: " + evt.detail.command +
-                       ". Ignoring command.");
-        break;
-    }
-  },
-
-  initRemotePage: function () {
-    let iframe = document.getElementById("remote-report").contentDocument;
-    iframe.addEventListener("RemoteHealthReportCommand",
-                            function onCommand(e) {healthReportWrapper.handleRemoteCommand(e);},
-                            false);
-    healthReportWrapper.injectData("begin", null);
-  },
-
-  // error handling
-  ERROR_INIT_FAILED:    1,
-  ERROR_PAYLOAD_FAILED: 2,
-  ERROR_PREFS_FAILED:   3,
-
-  reportFailure: function (error) {
-    let details = {
-      errorType: error,
-    };
-    healthReportWrapper.injectData("error", details);
-  },
-
-  handleInitFailure: function () {
-    healthReportWrapper.reportFailure(healthReportWrapper.ERROR_INIT_FAILED);
-  },
-
-  handlePayloadFailure: function () {
-    healthReportWrapper.reportFailure(healthReportWrapper.ERROR_PAYLOAD_FAILED);
-  },
-};
-
-window.addEventListener("load", healthReportWrapper.init.bind(healthReportWrapper), false);
-window.addEventListener("unload", healthReportWrapper.uninit.bind(healthReportWrapper), false);
diff --git a/mobile/android/chrome/content/aboutHealthReport.xhtml b/mobile/android/chrome/content/aboutHealthReport.xhtml
deleted file mode 100644
index 73dae0380..000000000
--- a/mobile/android/chrome/content/aboutHealthReport.xhtml
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" [
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
-%globalDTD;
-<!ENTITY % aboutHealthReportDTD SYSTEM "chrome://browser/locale/aboutHealthReport.dtd" >
-%aboutHealthReportDTD;
-]>
-
-<!-- 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 name="viewport" content="width=device-width, initial-scale=1" />
-   <title>&abouthealth.pagetitle;</title>
-   <link rel="icon" type="image/png" sizes="64x64"
-     href="chrome://branding/content/favicon64.png" />
-   <link rel="stylesheet"
-     href="chrome://browser/skin/aboutHealthReport.css"
-     type="text/css" />
-   <script type="text/javascript;version=1.8"
-     src="chrome://browser/content/aboutHealthReport.js" />
-  </head>
-  <body>
-    <iframe id="remote-report"/>
-  </body>
-</html>
diff --git a/mobile/android/chrome/content/aboutHome.xhtml b/mobile/android/chrome/content/aboutHome.xhtml
deleted file mode 100644
index 692eac2ec..000000000
--- a/mobile/android/chrome/content/aboutHome.xhtml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-  %brandDTD;
-  <!ENTITY % abouthomeDTD SYSTEM "chrome://browser/locale/aboutHome.dtd">
-  %abouthomeDTD;
-]>
-
-<!-- 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>
-  <title>&abouthome.title;</title>
-</head>
-<body>
-</body>
-</html>
diff --git a/mobile/android/chrome/content/aboutLogins.js b/mobile/android/chrome/content/aboutLogins.js
deleted file mode 100644
index b3d003875..000000000
--- a/mobile/android/chrome/content/aboutLogins.js
+++ /dev/null
@@ -1,517 +0,0 @@
-/* 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, Cc = Components.classes, Cu = Components.utils;
-
-Cu.import("resource://services-common/utils.js"); /*global: CommonUtils */
-Cu.import("resource://gre/modules/Messaging.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyGetter(window, "gChromeWin", () =>
-  window.QueryInterface(Ci.nsIInterfaceRequestor)
-    .getInterface(Ci.nsIWebNavigation)
-    .QueryInterface(Ci.nsIDocShellTreeItem)
-    .rootTreeItem
-    .QueryInterface(Ci.nsIInterfaceRequestor)
-    .getInterface(Ci.nsIDOMWindow)
-    .QueryInterface(Ci.nsIDOMChromeWindow));
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Prompt",
-                                  "resource://gre/modules/Prompt.jsm");
-
-var debug = Cu.import("resource://gre/modules/AndroidLog.jsm", {}).AndroidLog.d.bind(null, "AboutLogins");
-
-var gStringBundle = Services.strings.createBundle("chrome://browser/locale/aboutLogins.properties");
-
-function copyStringShowSnackbar(string, notifyString) {
-  try {
-    let clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
-    clipboard.copyString(string);
-    Snackbars.show(notifyString, Snackbars.LENGTH_LONG);
-  } catch (e) {
-    debug("Error copying from about:logins");
-    Snackbars.show(gStringBundle.GetStringFromName("loginsDetails.copyFailed"), Snackbars.LENGTH_LONG);
-  }
-}
-
-// Delay filtering while typing in MS
-const FILTER_DELAY = 500;
-
-var Logins = {
-  _logins: [],
-  _filterTimer: null,
-  _selectedLogin: null,
-
-  // Load the logins list, displaying interstitial UI (see
-  // #logins-list-loading-body) while loading.  There are careful
-  // jank-avoiding measures taken in this function; be careful when
-  // modifying it!
-  //
-  // Returns a Promise that resolves to the list of logins, ordered by
-  // hostname.
-  _promiseLogins: function() {
-    let contentBody = document.getElementById("content-body");
-    let emptyBody = document.getElementById("empty-body");
-    let filterIcon = document.getElementById("filter-button");
-
-    let showSpinner = () => {
-      this._toggleListBody(true);
-      emptyBody.classList.add("hidden");
-    };
-
-    let getAllLogins = () => {
-      let logins = [];
-      try {
-        logins = Services.logins.getAllLogins();
-      } catch(e) {
-        // It's likely that the Master Password was not entered; give
-        // a hint to the next person.
-        throw new Error("Possible Master Password permissions error: " + e.toString());
-      }
-
-      logins.sort((a, b) => a.hostname.localeCompare(b.hostname));
-
-      return logins;
-    };
-
-    let hideSpinner = (logins) => {
-      this._toggleListBody(false);
-
-      if (!logins.length) {
-        contentBody.classList.add("hidden");
-        filterIcon.classList.add("hidden");
-        emptyBody.classList.remove("hidden");
-      } else {
-        contentBody.classList.remove("hidden");
-        emptyBody.classList.add("hidden");
-      }
-
-      return logins;
-    };
-
-    // Return a promise that is resolved after a paint.
-    let waitForPaint = () => {
-      // We're changing 'display'.  We need to wait for the new value to take
-      // effect; otherwise, we'll block and never paint a change.  Since
-      // requestAnimationFrame callback is generally triggered *before* any
-      // style flush and layout, we wait for two animation frames.  This
-      // approach was cribbed from
-      // https://dxr.mozilla.org/mozilla-central/rev/5abe3c4deab94270440422c850bbeaf512b1f38d/browser/base/content/browser-fullScreen.js?offset=0#469.
-      return new Promise(function(resolve, reject) {
-        requestAnimationFrame(() => {
-          requestAnimationFrame(() => {
-            resolve();
-          });
-        });
-      });
-    };
-
-    // getAllLogins janks the main-thread.  We need to paint before that jank;
-    // by throwing the janky load onto the next tick, we paint the spinner; the
-    // spinner is CSS animated off-main-thread.
-    return Promise.resolve()
-      .then(showSpinner)
-      .then(waitForPaint)
-      .then(getAllLogins)
-      .then(hideSpinner);
-  },
-
-  // Reload the logins list, displaying interstitial UI while loading.
-  // Update the stored and displayed list upon completion.
-  _reloadList: function() {
-    this._promiseLogins()
-      .then((logins) => {
-        this._logins = logins;
-        this._loadList(logins);
-      })
-      .catch((e) => {
-        // There's no way to recover from errors, sadly.  Log and make
-        // it obvious that something is up.
-        this._logins = [];
-        debug("Failed to _reloadList!");
-        Cu.reportError(e);
-      });
-  },
-
-  _toggleListBody: function(isLoading) {
-    let contentBody = document.getElementById("content-body");
-    let loadingBody = document.getElementById("logins-list-loading-body");
-
-    if (isLoading) {
-      contentBody.classList.add("hidden");
-      loadingBody.classList.remove("hidden");
-    } else {
-      loadingBody.classList.add("hidden");
-      contentBody.classList.remove("hidden");
-    }
-  },
-
-  init: function () {
-    window.addEventListener("popstate", this , false);
-
-    Services.obs.addObserver(this, "passwordmgr-storage-changed", false);
-    document.getElementById("update-btn").addEventListener("click", this._onSaveEditLogin.bind(this), false);
-    document.getElementById("password-btn").addEventListener("click", this._onPasswordBtn.bind(this), false);
-
-    let filterInput = document.getElementById("filter-input");
-    let filterContainer = document.getElementById("filter-input-container");
-
-    filterInput.addEventListener("input", (event) => {
-      // Stop any in-progress filter timer
-      if (this._filterTimer) {
-        clearTimeout(this._filterTimer);
-        this._filterTimer = null;
-      }
-
-      // Start a new timer
-      this._filterTimer = setTimeout(() => {
-        this._filter(event);
-      }, FILTER_DELAY);
-    }, false);
-
-    filterInput.addEventListener("blur", (event) => {
-      filterContainer.setAttribute("hidden", true);
-    });
-
-    document.getElementById("filter-button").addEventListener("click", (event) => {
-      filterContainer.removeAttribute("hidden");
-      filterInput.focus();
-    }, false);
-
-    document.getElementById("filter-clear").addEventListener("click", (event) => {
-      // Stop any in-progress filter timer
-      if (this._filterTimer) {
-        clearTimeout(this._filterTimer);
-        this._filterTimer = null;
-      }
-
-      filterInput.blur();
-      filterInput.value = "";
-      this._loadList(this._logins);
-    }, false);
-
-    this._showList();
-
-    this._updatePasswordBtn(true);
-
-    this._reloadList();
-  },
-
-  uninit: function () {
-    Services.obs.removeObserver(this, "passwordmgr-storage-changed");
-    window.removeEventListener("popstate", this, false);
-  },
-
-  _loadList: function (logins) {
-    let list = document.getElementById("logins-list");
-    let newList = list.cloneNode(false);
-
-    logins.forEach(login => {
-      let item = this._createItemForLogin(login);
-      newList.appendChild(item);
-    });
-
-    list.parentNode.replaceChild(newList, list);
-  },
-
-  _showList: function () {
-    let loginsListPage = document.getElementById("logins-list-page");
-    loginsListPage.classList.remove("hidden");
-
-    let editLoginPage = document.getElementById("edit-login-page");
-    editLoginPage.classList.add("hidden");
-
-    // If the Show/Hide password button has been flipped, reset it
-    if (this._isPasswordBtnInHideMode()) {
-      this._updatePasswordBtn(true);
-    }
-  },
-
-  _onPopState: function (event) {
-    // Called when back/forward is used to change the state of the page
-    if (event.state) {
-      this._showEditLoginDialog(event.state.id);
-    } else {
-      this._selectedLogin = null;
-      this._showList();
-    }
-  },
-  _showEditLoginDialog: function (login) {
-    let listPage = document.getElementById("logins-list-page");
-    listPage.classList.add("hidden");
-
-    let editLoginPage = document.getElementById("edit-login-page");
-    editLoginPage.classList.remove("hidden");
-
-    let usernameField = document.getElementById("username");
-    usernameField.value = login.username;
-    let passwordField = document.getElementById("password");
-    passwordField.value = login.password;
-    let domainField = document.getElementById("hostname");
-    domainField.value = login.hostname;
-
-    let img = document.getElementById("favicon");
-    this._loadFavicon(img, login.hostname);
-
-    let headerText = document.getElementById("edit-login-header-text");
-    if (login.hostname && (login.hostname != "")) {
-      headerText.textContent = login.hostname;
-    }
-    else {
-      headerText.textContent = gStringBundle.GetStringFromName("editLogin.fallbackTitle");
-    }
-
-    passwordField.addEventListener("input", (event) => {
-      let newPassword = passwordField.value;
-      let updateBtn = document.getElementById("update-btn");
-
-      if (newPassword === "") {
-        updateBtn.disabled = true;
-        updateBtn.classList.add("disabled-btn");
-      } else if ((newPassword !== "") && (updateBtn.disabled === true)) {
-        updateBtn.disabled = false;
-        updateBtn.classList.remove("disabled-btn");
-      }
-    }, false);
-  },
-
-  _onSaveEditLogin: function() {
-    let newUsername = document.getElementById("username").value;
-    let newPassword = document.getElementById("password").value;
-    let newDomain  = document.getElementById("hostname").value;
-    let origUsername = this._selectedLogin.username;
-    let origPassword = this._selectedLogin.password;
-    let origDomain = this._selectedLogin.hostname;
-
-    try {
-      if ((newUsername === origUsername) &&
-          (newPassword === origPassword) &&
-          (newDomain === origDomain) ) {
-        Snackbars.show(gStringBundle.GetStringFromName("editLogin.saved1"), Snackbars.LENGTH_LONG);
-        this._showList();
-        return;
-      }
-
-      let logins = Services.logins.findLogins({}, origDomain, origDomain, null);
-
-      for (let i = 0; i < logins.length; i++) {
-        if (logins[i].username == origUsername) {
-          let clone = logins[i].clone();
-          clone.username = newUsername;
-          clone.password = newPassword;
-          clone.hostname = newDomain;
-          Services.logins.removeLogin(logins[i]);
-          Services.logins.addLogin(clone);
-          break;
-        }
-      }
-    } catch (e) {
-      Snackbars.show(gStringBundle.GetStringFromName("editLogin.couldNotSave"), Snackbars.LENGTH_LONG);
-      return;
-    }
-    Snackbars.show(gStringBundle.GetStringFromName("editLogin.saved1"), Snackbars.LENGTH_LONG);
-    this._showList();
-  },
-
-  _onPasswordBtn: function () {
-    this._updatePasswordBtn(this._isPasswordBtnInHideMode());
-  },
-
-  _updatePasswordBtn: function (aShouldShow) {
-    let passwordField = document.getElementById("password");
-    let button = document.getElementById("password-btn");
-    let show = gStringBundle.GetStringFromName("password-btn.show");
-    let hide = gStringBundle.GetStringFromName("password-btn.hide");
-    if (aShouldShow) {
-      passwordField.type = "password";
-      button.textContent = show;
-      button.classList.remove("password-btn-hide");
-    } else {
-      passwordField.type = "text";
-      button.textContent= hide;
-      button.classList.add("password-btn-hide");
-    }
-  },
-
-  _isPasswordBtnInHideMode: function () {
-    let button = document.getElementById("password-btn");
-    return button.classList.contains("password-btn-hide");
-  },
-
-  _showPassword: function(password) {
-    let passwordPrompt = new Prompt({
-      window: window,
-      message: password,
-      buttons: [
-        gStringBundle.GetStringFromName("loginsDialog.copy"),
-        gStringBundle.GetStringFromName("loginsDialog.cancel") ]
-      }).show((data) => {
-        switch (data.button) {
-          case 0:
-          // Corresponds to "Copy password" button.
-          copyStringShowSnackbar(password, gStringBundle.GetStringFromName("loginsDetails.passwordCopied"));
-        }
-     });
-  },
-
-  _onLoginClick: function (event) {
-    let loginItem = event.currentTarget;
-    let login = loginItem.login;
-    if (!login) {
-      debug("No login!");
-      return;
-    }
-
-    let prompt = new Prompt({
-      window: window,
-    });
-    let menuItems = [
-      { label: gStringBundle.GetStringFromName("loginsMenu.showPassword") },
-      { label: gStringBundle.GetStringFromName("loginsMenu.copyPassword") },
-      { label: gStringBundle.GetStringFromName("loginsMenu.copyUsername") },
-      { label: gStringBundle.GetStringFromName("loginsMenu.editLogin") },
-      { label: gStringBundle.GetStringFromName("loginsMenu.delete") }
-    ];
-
-    prompt.setSingleChoiceItems(menuItems);
-    prompt.show((data) => {
-      // Switch on indices of buttons, as they were added when creating login item.
-      switch (data.button) {
-        case 0:
-          this._showPassword(login.password);
-          break;
-        case 1:
-          copyStringShowSnackbar(login.password, gStringBundle.GetStringFromName("loginsDetails.passwordCopied"));
-          break;
-        case 2:
-          copyStringShowSnackbar(login.username, gStringBundle.GetStringFromName("loginsDetails.usernameCopied"));
-          break;
-        case 3:
-          this._selectedLogin = login;
-          this._showEditLoginDialog(login);
-          history.pushState({ id: login.guid }, document.title);
-          break;
-        case 4:
-          let confirmPrompt = new Prompt({
-            window: window,
-            message: gStringBundle.GetStringFromName("loginsDialog.confirmDelete"),
-            buttons: [
-              gStringBundle.GetStringFromName("loginsDialog.confirm"),
-              gStringBundle.GetStringFromName("loginsDialog.cancel") ]
-          });
-          confirmPrompt.show((data) => {
-            switch (data.button) {
-              case 0:
-                // Corresponds to "confirm" button.
-                Services.logins.removeLogin(login);
-            }
-          });
-      }
-    });
-  },
-
-  _loadFavicon: function (aImg, aHostname) {
-    // Load favicon from cache.
-    Messaging.sendRequestForResult({
-      type: "Favicon:CacheLoad",
-      url: aHostname,
-    }).then(function(faviconUrl) {
-      aImg.style.backgroundImage= "url('" + faviconUrl + "')";
-      aImg.style.visibility = "visible";
-    }, function(data) {
-      debug("Favicon cache failure : " + data);
-      aImg.style.visibility = "visible";
-    });
-  },
-
-  _createItemForLogin: function (login) {
-    let loginItem = document.createElement("div");
-
-    loginItem.setAttribute("loginID", login.guid);
-    loginItem.className = "login-item list-item";
-
-    loginItem.addEventListener("click", this, true);
-
-    // Create item icon.
-    let img = document.createElement("div");
-    img.className = "icon";
-
-    this._loadFavicon(img, login.hostname);
-    loginItem.appendChild(img);
-
-    // Create item details.
-    let inner = document.createElement("div");
-    inner.className = "inner";
-
-    let details = document.createElement("div");
-    details.className = "details";
-    inner.appendChild(details);
-
-    let titlePart = document.createElement("div");
-    titlePart.className = "hostname";
-    titlePart.textContent = login.hostname;
-    details.appendChild(titlePart);
-
-    let versionPart = document.createElement("div");
-    versionPart.textContent = login.httpRealm;
-    versionPart.className = "realm";
-    details.appendChild(versionPart);
-
-    let descPart = document.createElement("div");
-    descPart.textContent = login.username;
-    descPart.className = "username";
-    inner.appendChild(descPart);
-
-    loginItem.appendChild(inner);
-    loginItem.login = login;
-    return loginItem;
-  },
-
-  handleEvent: function (event) {
-    switch (event.type) {
-      case "popstate": {
-        this._onPopState(event);
-        break;
-      }
-      case "click": {
-        this._onLoginClick(event);
-        break;
-      }
-    }
-  },
-
-  observe: function (subject, topic, data) {
-    switch(topic) {
-      case "passwordmgr-storage-changed": {
-        this._reloadList();
-        break;
-      }
-    }
-  },
-
-  _filter: function(event) {
-    let value = event.target.value.toLowerCase();
-    let logins = this._logins.filter((login) => {
-      if (login.hostname.toLowerCase().indexOf(value) != -1) {
-        return true;
-      }
-      if (login.username &&
-          login.username.toLowerCase().indexOf(value) != -1) {
-        return true;
-      }
-      if (login.httpRealm &&
-          login.httpRealm.toLowerCase().indexOf(value) != -1) {
-        return true;
-      }
-      return false;
-    });
-
-    this._loadList(logins);
-  }
-};
-
-window.addEventListener("load", Logins.init.bind(Logins), false);
-window.addEventListener("unload", Logins.uninit.bind(Logins), false);
diff --git a/mobile/android/chrome/content/aboutLogins.xhtml b/mobile/android/chrome/content/aboutLogins.xhtml
deleted file mode 100644
index 02225d43a..000000000
--- a/mobile/android/chrome/content/aboutLogins.xhtml
+++ /dev/null
@@ -1,90 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" [
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd" >
-%globalDTD;
-<!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-%brandDTD;
-<!ENTITY % aboutDTD SYSTEM "chrome://browser/locale/aboutLogins.dtd" >
-%aboutDTD;
-]>
-<!-- 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>
-    <title>&aboutLogins.title;</title>
-    <meta name="viewport" content="width=device-width; user-scalable=0" />
-    <link rel="icon" type="image/png" sizes="64x64" href="chrome://branding/content/favicon64.png" />
-    <link rel="stylesheet" href="chrome://browser/skin/spinner.css" type="text/css"/>
-    <link rel="stylesheet" href="chrome://browser/skin/aboutBase.css" type="text/css"/>
-    <link rel="stylesheet" href="chrome://browser/skin/aboutLogins.css" type="text/css"/>
-    <script type="application/javascript;version=1.8" src="chrome://browser/content/aboutLogins.js"></script>
-  </head>
-  <body dir="&locale.dir;">
-
-    <div id="logins-list-page">
-      <div id="logins-header" class="header">
-        <div>&aboutLogins.title;</div>
-        <ul class="toolbar-buttons">
-          <li id="filter-button"></li>
-        </ul>
-      </div>
-      <div id="content-body">
-        <div id="logins-list" class="list"/>
-        <div id="filter-input-container" hidden="true">
-          <input id="filter-input" type="search"/>
-          <div id="filter-clear"/>
-        </div>
-      </div>
-      <div id="logins-list-loading-body" class="hidden">
-        <div id="loading-img-container">
-
-          <div id="spinner" class="mui-refresh-main">
-            <div class="mui-refresh-wrapper">
-              <div class="mui-spinner-wrapper">
-                <div class="mui-spinner-main">
-                  <div class="mui-spinner-left">
-                    <div class="mui-half-circle-left" />
-                  </div>
-                  <div class="mui-spinner-right">
-                    <div class="mui-half-circle-right" />
-                  </div>
-                </div>
-              </div>
-            </div>
-          </div>
-
-        </div>
-      </div>
-      <div id="empty-body" class="hidden">
-        <div id="empty-obj-text-container">
-          <object type="image/svg+xml" id="empty-icon" data="chrome://browser/skin/images/icon_key_emptypage.svg"/>
-          <div class="empty-text">&aboutLogins.emptyLoginText;</div>
-          <div class="empty-hint">&aboutLogins.emptyLoginHint;</div>
-        </div>
-      </div>
-    </div>
-
-    <div id="edit-login-page" class="hidden">
-      <div id="edit-login-header" class="header">
-        <div id="edit-login-header-text"/>
-      </div>
-      <div class="edit-login-div">
-        <div id="favicon" class="edit-login-icon"/>
-          <input type="text" name="hostname" id="hostname" class="edit-login-input"/>
-      </div>
-      <div class="edit-login-div">
-        <input type="text" name="username" id="username" class="edit-login-input" autocomplete="off"/>
-      </div>
-      <div class="edit-login-div">
-        <input type="password" id="password" name="password" value="password" class="edit-login-input" />
-        <button id="password-btn"></button>
-      </div>
-      <div class="edit-login-div">
-        <button id="update-btn" class="update-button">&aboutLogins.update;</button>
-      </div>
-    </div>
-
-  </body>
-</html>
diff --git a/mobile/android/chrome/content/aboutPrivateBrowsing.js b/mobile/android/chrome/content/aboutPrivateBrowsing.js
deleted file mode 100644
index 782abfb5d..000000000
--- a/mobile/android/chrome/content/aboutPrivateBrowsing.js
+++ /dev/null
@@ -1,32 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-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://gre/modules/PrivateBrowsingUtils.jsm");
-
-XPCOMUtils.defineLazyGetter(window, "gChromeWin", () =>
-  window.QueryInterface(Ci.nsIInterfaceRequestor)
-    .getInterface(Ci.nsIWebNavigation)
-    .QueryInterface(Ci.nsIDocShellTreeItem)
-    .rootTreeItem
-    .QueryInterface(Ci.nsIInterfaceRequestor)
-    .getInterface(Ci.nsIDOMWindow)
-    .QueryInterface(Ci.nsIDOMChromeWindow));
-
-document.addEventListener("DOMContentLoaded", function() {
-    let BrowserApp = gChromeWin.BrowserApp;
-
-    if (!PrivateBrowsingUtils.isContentWindowPrivate(window)) {
-      document.body.setAttribute("class", "normal");
-      document.getElementById("newPrivateTabLink").addEventListener("click", function() {
-        BrowserApp.addTab("about:privatebrowsing", { selected: true, parentId: BrowserApp.selectedTab.id, isPrivate: true });
-      }, false);
-    }
-  }, false);
diff --git a/mobile/android/chrome/content/aboutPrivateBrowsing.xhtml b/mobile/android/chrome/content/aboutPrivateBrowsing.xhtml
deleted file mode 100644
index 7075bd11e..000000000
--- a/mobile/android/chrome/content/aboutPrivateBrowsing.xhtml
+++ /dev/null
@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="UTF-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/.
--->
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-  %brandDTD;
-  <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
-  %globalDTD;
-  <!ENTITY % privatebrowsingpageDTD SYSTEM "chrome://browser/locale/aboutPrivateBrowsing.dtd">
-  %privatebrowsingpageDTD;
-]>
-
-<html xmlns="http://www.w3.org/1999/xhtml">
-  <head>
-    <title>&privatebrowsingpage.title;</title>
-    <meta name="viewport" content="width=device-width, initial-scale=1; user-scalable=no"/>
-    <link rel="stylesheet" href="chrome://browser/skin/aboutPrivateBrowsing.css" type="text/css" media="all"/>
-    <link rel="icon" type="image/png" href="chrome://branding/content/favicon32.png" />
-    <script type="application/javascript;version=1.8" src="chrome://browser/content/aboutPrivateBrowsing.js"></script>
-  </head>
-
-  <body class="private">
-    <img class="showPrivate masq" src="chrome://browser/skin/images/privatebrowsing-mask-and-shield.svg" />
-    <img class="showNormal masq" src="chrome://browser/skin/images/privatebrowsing-mask.png" />
-
-    <h1 class="showPrivate">&privatebrowsingpage.title;<br />&privatebrowsingpage.title.private;</h1>
-    <h1 class="showNormal">&privatebrowsingpage.title.normal1;</h1>
-
-    <div class="contentSection">
-      <p class="showPrivate">&privatebrowsingpage.description.trackingProtection;<br /><br />&privatebrowsingpage.description.privateDetails;</p>
-      <p class="showNormal">&privatebrowsingpage.description.normal2;</p>
-
-      <p class="showPrivate"><a href="https://support.mozilla.org/kb/private-browsing-firefox-android">&privatebrowsingpage.link.private;</a></p>
-      <p class="showNormal"><a href="#" id="newPrivateTabLink">&privatebrowsingpage.link.normal;</a></p>
-    </div>
-
-  </body>
-</html>
diff --git a/mobile/android/chrome/content/aboutRights.xhtml b/mobile/android/chrome/content/aboutRights.xhtml
deleted file mode 100644
index 8172788f4..000000000
--- a/mobile/android/chrome/content/aboutRights.xhtml
+++ /dev/null
@@ -1,95 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd">
-  %brandDTD;
-  <!ENTITY % aboutRightsDTD SYSTEM "chrome://global/locale/aboutRights.dtd">
-  %aboutRightsDTD;
-]>
-
-<!-- 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>
-  <title>&rights.pagetitle;</title>
-  <link rel="stylesheet" href="chrome://global/skin/about.css" type="text/css"/>
-</head>
-
-<body id="your-rights" dir="&rights.locale-direction;" class="aboutPageWideContainer">
-
-<h1>&rights.intro-header;</h1>
-
-<p>&rights.intro;</p>
-
-<ul>
-  <li>&rights.intro-point1a;<a href="https://www.mozilla.org/MPL/">&rights.intro-point1b;</a>&rights.intro-point1c;</li>
-  <!-- Point 2 discusses Mozilla trademarks, and isn't needed when the build is unbranded.
-       Point 3 discusses privacy policy, unbranded builds get a placeholder (for the vendor to replace)
-       Point 4 discusses web service terms, unbranded builds gets a placeholder (for the vendor to replace) -->
-  <li>&rights.intro-point2-a;<a href="https://www.mozilla.org/foundation/trademarks/policy.html">&rights.intro-point2-b;</a>&rights.intro-point2-c;</li>
-  <li>&rights.intro-point2.5;</li>
-  <li>&rights2.intro-point3a;<a href="https://www.mozilla.org/privacy/firefox/">&rights2.intro-point3b;</a>&rights.intro-point3c;</li>
-  <li>&rights2.intro-point4a;<a href="about:rights#webservices" onclick="showServices();">&rights.intro-point4b;</a>&rights.intro-point4c;</li>
-</ul>
-
-<div id="webservices-container">
-  <a name="webservices"/>
-  <h3>&rights2.webservices-header;</h3>
-
-  <p>&rights2.webservices-a;<a href="about:rights#disabling-webservices" onclick="showDisablingServices();">&rights2.webservices-b;</a>&rights3.webservices-c;</p>
-
-  <div id="disabling-webservices-container" style="margin-left:40px;">
-    <a name="disabling-webservices"/>
-    <!-- Safe Browsing cannot be disabled in Firefox Mobile; these instructions show how to do it on desktop
-    <p><strong>&rights.safebrowsing-a;</strong>&rights.safebrowsing-b;</p>
-    <ul>
-      <li>&rights.safebrowsing-term1;</li>
-      <li>&rights.safebrowsing-term2;</li>
-      <li>&rights2.safebrowsing-term3;</li>
-      <li>&rights.safebrowsing-term4;</li>
-    </ul>
-    -->
-
-    <p><strong>&rights.locationawarebrowsing-a;</strong>&rights.locationawarebrowsing-b;</p>
-    <ul>
-      <li>&rights.locationawarebrowsing-term1a;<code>&rights.locationawarebrowsing-term1b;</code></li>
-      <li>&rights.locationawarebrowsing-term2;</li>
-      <li>&rights.locationawarebrowsing-term3;</li>
-      <li>&rights.locationawarebrowsing-term4;</li>
-    </ul>
-  </div>
-
-  <ol>
-    <!-- Terms only apply to official builds, unbranded builds get a placeholder. -->
-    <li>&rights2.webservices-term1;</li>
-    <li>&rights.webservices-term2;</li>
-    <li>&rights2.webservices-term3;</li>
-    <li><strong>&rights.webservices-term4;</strong></li>
-    <li><strong>&rights.webservices-term5;</strong></li>
-    <li>&rights.webservices-term6;</li>
-    <li>&rights.webservices-term7;</li>
-  </ol>
-</div>
-
-<script type="application/javascript"><![CDATA[
-  var servicesDiv = document.getElementById("webservices-container");
-  servicesDiv.style.display = "none";
-
-  function showServices() {
-    servicesDiv.style.display = "";
-  }
-  
-  var disablingServicesDiv = document.getElementById("disabling-webservices-container");
-  disablingServicesDiv.style.display = "none";
-  
-  function showDisablingServices() {
-    disablingServicesDiv.style.display = "";
-  }
-]]></script>
-
-</body>
-</html>
diff --git a/mobile/android/chrome/content/bindings/checkbox.xml b/mobile/android/chrome/content/bindings/checkbox.xml
deleted file mode 100644
index ec5c7828b..000000000
--- a/mobile/android/chrome/content/bindings/checkbox.xml
+++ /dev/null
@@ -1,75 +0,0 @@
-<?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 % checkboxDTD SYSTEM "chrome://browser/locale/checkbox.dtd">
-  %checkboxDTD;
-]>
-
-<bindings
-    xmlns="http://www.mozilla.org/xbl"
-    xmlns:xbl="http://www.mozilla.org/xbl"
-    xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <binding id="checkbox-radio" display="xul:box" extends="chrome://global/content/bindings/checkbox.xml#checkbox-baseline">
-    <content>
-      <xul:radiogroup anonid="group" xbl:inherits="disabled">
-        <xul:radio anonid="on" class="checkbox-radio-on" label="&checkbox.yes.label;" xbl:inherits="label=onlabel"/>
-        <xul:radio anonid="off" class="checkbox-radio-off" label="&checkbox.no.label;" xbl:inherits="label=offlabel"/>
-      </xul:radiogroup>
-    </content>
-    <implementation>
-      <constructor><![CDATA[
-        this.setChecked(this.checked);
-      ]]></constructor>
-
-      <field name="_group">
-        document.getAnonymousElementByAttribute(this, "anonid", "group");
-      </field>
-
-      <field name="_on">
-        document.getAnonymousElementByAttribute(this, "anonid", "on");
-      </field>
-
-      <field name="_off">
-        document.getAnonymousElementByAttribute(this, "anonid", "off");
-      </field>
-
-      <property name="onlabel"
-        onget="return this._on.label"
-        onset="this._on.label=val"/>
-
-      <property name="offlabel"
-        onget="return this._off.label"
-        onset="this._off.label=val"/>
-
-      <method name="setChecked">
-        <parameter name="aValue"/>
-        <body>
-        <![CDATA[
-          var change = (aValue != this.checked);
-          if (aValue) {
-            this.setAttribute("checked", "true");
-            this._group.selectedItem = this._on;
-          }
-          else {
-            this.removeAttribute("checked");
-            this._group.selectedItem = this._off;
-          }
-
-          if (change) {
-            var event = document.createEvent("Events");
-            event.initEvent("CheckboxStateChange", true, true);
-            this.dispatchEvent(event);
-          }
-          return aValue;
-        ]]>
-        </body>
-      </method>
-    </implementation>
-  </binding>
-
-</bindings>
diff --git a/mobile/android/chrome/content/bindings/settings.xml b/mobile/android/chrome/content/bindings/settings.xml
deleted file mode 100644
index 0019e9d3b..000000000
--- a/mobile/android/chrome/content/bindings/settings.xml
+++ /dev/null
@@ -1,66 +0,0 @@
-<?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
-    xmlns="http://www.mozilla.org/xbl"
-    xmlns:xbl="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">
-
-  <binding id="setting-fulltoggle-bool" extends="chrome://mozapps/content/extensions/setting.xml#setting-bool">
-    <handlers>
-      <handler event="command" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        ]]>
-      </handler>
-      <handler event="click" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        this.input.checked = !this.input.checked;
-        this.inputChanged();
-        this.fireEvent("oncommand");
-        ]]>
-      </handler>
-    </handlers>
-  </binding>
-
-  <binding id="setting-fulltoggle-boolint" extends="chrome://mozapps/content/extensions/setting.xml#setting-boolint">
-    <handlers>
-      <handler event="command" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        ]]>
-      </handler>
-      <handler event="click" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        this.input.checked = !this.input.checked;
-        this.inputChanged();
-        this.fireEvent("oncommand");
-        ]]>
-      </handler>
-    </handlers>
-  </binding>
-
-  <binding id="setting-fulltoggle-localized-bool" extends="chrome://mozapps/content/extensions/setting.xml#setting-localized-bool">
-    <handlers>
-      <handler event="command" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        ]]>
-      </handler>
-      <handler event="click" button="0" phase="capturing">
-        <![CDATA[
-        event.stopPropagation();
-        this.input.checked = !this.input.checked;
-        this.inputChanged();
-        this.fireEvent("oncommand");
-        ]]>
-      </handler>
-    </handlers>
-  </binding>
-</bindings>
diff --git a/mobile/android/chrome/content/blockedSite.xhtml b/mobile/android/chrome/content/blockedSite.xhtml
deleted file mode 100644
index 5f04edbef..000000000
--- a/mobile/android/chrome/content/blockedSite.xhtml
+++ /dev/null
@@ -1,195 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd">
-  %globalDTD;
-  <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >
-  %brandDTD;
-  <!ENTITY % blockedSiteDTD SYSTEM "chrome://browser/locale/phishing.dtd">
-  %blockedSiteDTD;
-]>
-
-<!-- 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" class="blacklist">
-  <head>
-    <meta name="viewport" content="width=device-width; user-scalable=false" />
-    <link rel="stylesheet" href="chrome://global/skin/netError.css" type="text/css" media="all" />
-    <link rel="icon" type="image/png" id="favicon" sizes="64x64" href="chrome://browser/skin/images/blocked-warning.png"/>
-
-    <script type="application/javascript"><![CDATA[
-      // Error url MUST be formatted like this:
-      //   about:blocked?e=error_code&u=url(&o=1)?
-      //     (o=1 when user overrides are allowed)
-
-      // Note that this file uses document.documentURI to get
-      // the URL (with the format from above). This is because
-      // document.location.href gets the current URI off the docshell,
-      // which is the URL displayed in the location bar, i.e.
-      // the URI that the user attempted to load.
-
-      function getErrorCode()
-      {
-        var url = document.documentURI;
-        var error = url.search(/e\=/);
-        var duffUrl = url.search(/\&u\=/);
-        return decodeURIComponent(url.slice(error + 2, duffUrl));
-      }
-
-      function getURL()
-      {
-        var url = document.documentURI;
-        var match = url.match(/&u=([^&]+)&/);
-
-        // match == null if not found; if so, return an empty string
-        // instead of what would turn out to be portions of the URI
-        if (!match)
-          return "";
-
-        url = decodeURIComponent(match[1]);
-
-        // If this is a view-source page, then get then real URI of the page
-        if (/^view-source\:/.test(url))
-          url = url.slice(12);
-        return url;
-      }
-
-      /**
-       * Check whether this warning page should be overridable or whether
-       * the "ignore warning" button should be hidden.
-       */
-      function getOverride()
-      {
-        var url = document.documentURI;
-        var match = url.match(/&o=1&/);
-        return !!match;
-      }
-
-      /**
-       * Attempt to get the hostname via document.location.  Fail back
-       * to getURL so that we always return something meaningful.
-       */
-      function getHostString()
-      {
-        try {
-          return document.location.hostname;
-        } catch (e) {
-          return getURL();
-        }
-      }
-
-      function initPage()
-      {
-        var error = "";
-        switch (getErrorCode()) {
-          case "malwareBlocked" :
-            error = "malware";
-            break;
-          case "deceptiveBlocked" :
-            error = "phishing";
-            break;
-          case "unwantedBlocked" :
-            error = "unwanted";
-            break;
-          default:
-            return;
-        }
-
-        var el;
-
-        if (error !== "malware") {
-          el = document.getElementById("errorTitleText_malware");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorShortDescText_malware");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorLongDescText_malware");
-          el.parentNode.removeChild(el);
-        }
-
-        if (error !== "phishing") {
-          el = document.getElementById("errorTitleText_phishing");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorShortDescText_phishing");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorLongDescText_phishing");
-          el.parentNode.removeChild(el);
-        }
-
-        if (error !== "unwanted") {
-          el = document.getElementById("errorTitleText_unwanted");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorShortDescText_unwanted");
-          el.parentNode.removeChild(el);
-          el = document.getElementById("errorLongDescText_unwanted");
-          el.parentNode.removeChild(el);
-        }
-
-        if (!getOverride()) {
-          var btn = document.getElementById("ignoreWarningButton");
-          if (btn) {
-            btn.parentNode.removeChild(btn);
-          }
-        }
-
-        // Set sitename
-        document.getElementById(error + "_sitename").textContent = getHostString();
-        document.title = document.getElementById("errorTitleText_" + error)
-                                 .innerHTML;
-
-        // Inform the test harness that we're done loading the page
-        var event = new CustomEvent("AboutBlockedLoaded");
-        document.dispatchEvent(event);
-      }
-    ]]></script>
-  </head>
-
-  <body id="errorPage" class="blockedsite" dir="&locale.dir;">
-
-    <div id="errorPageContainer">
-
-      <!-- Error Title -->
-      <div id="errorTitle">
-        <h1 id="errorTitleText_phishing" class="errorTitleText">&safeb.blocked.phishingPage.title3;</h1>
-        <h1 id="errorTitleText_malware" class="errorTitleText">&safeb.blocked.malwarePage.title;</h1>
-        <h1 id="errorTitleText_unwanted" class="errorTitleText">&safeb.blocked.unwantedPage.title;</h1>
-      </div>
-
-      <div id="errorLongContent">
-      
-        <!-- Short Description -->
-        <div id="errorShortDesc">
-          <p id="errorShortDescText_phishing">&safeb.blocked.phishingPage.shortDesc3;</p>
-          <p id="errorShortDescText_malware">&safeb.blocked.malwarePage.shortDesc;</p>
-          <p id="errorShortDescText_unwanted">&safeb.blocked.unwantedPage.shortDesc;</p>
-        </div>
-
-        <!-- Long Description -->
-        <div id="errorLongDesc">
-          <p id="errorLongDescText_phishing">&safeb.blocked.phishingPage.longDesc3;</p>
-          <p id="errorLongDescText_malware">&safeb.blocked.malwarePage.longDesc;</p>
-          <p id="errorLongDescText_unwanted">&safeb.blocked.unwantedPage.longDesc;</p>
-        </div>
-        
-        <!-- Action buttons -->
-        <div id="buttons">
-          <!-- Commands handled in browser.js -->
-          <button id="getMeOutButton">&safeb.palm.accept.label;</button>
-          <button id="reportButton">&safeb.palm.reportPage.label;</button>
-        </div>
-      </div>
-      <div id="ignoreWarning">
-        <button id="ignoreWarningButton">&safeb.palm.decline.label;</button>
-      </div>
-    </div>
-    <!--
-    - Note: It is important to run the script this way, instead of using
-    - an onload handler. This is because error pages are loaded as
-    - LOAD_BACKGROUND, which means that onload handlers will not be executed.
-    -->
-    <script type="application/javascript">initPage();</script>
-  </body>
-</html>
diff --git a/mobile/android/chrome/content/browser.css b/mobile/android/chrome/content/browser.css
deleted file mode 100644
index fdc35d961..000000000
--- a/mobile/android/chrome/content/browser.css
+++ /dev/null
@@ -1,7 +0,0 @@
-/* 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/. */
-
-browser[remote="true"] {
-  -moz-binding: url("chrome://global/content/bindings/remote-browser.xml#remote-browser");
-}
\ No newline at end of file
diff --git a/mobile/android/chrome/content/browser.js b/mobile/android/chrome/content/browser.js
deleted file mode 100644
index 535f7e607..000000000
--- a/mobile/android/chrome/content/browser.js
+++ /dev/null
@@ -1,6961 +0,0 @@
-// -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
-/* 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/. */
-"use strict";
-
-var Cc = Components.classes;
-var Ci = Components.interfaces;
-var Cu = Components.utils;
-var Cr = Components.results;
-
-Cu.import("resource://gre/modules/AppConstants.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/AddonManager.jsm");
-Cu.import("resource://gre/modules/AsyncPrefs.jsm");
-Cu.import("resource://gre/modules/DelayedInit.jsm");
-
-if (AppConstants.ACCESSIBILITY) {
-  XPCOMUtils.defineLazyModuleGetter(this, "AccessFu",
-                                    "resource://gre/modules/accessibility/AccessFu.jsm");
-}
-
-XPCOMUtils.defineLazyModuleGetter(this, "SpatialNavigation",
-                                  "resource://gre/modules/SpatialNavigation.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "DownloadNotifications",
-                                  "resource://gre/modules/DownloadNotifications.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "FileUtils",
-                                  "resource://gre/modules/FileUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "JNI",
-                                  "resource://gre/modules/JNI.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
-                                  "resource://gre/modules/UITelemetry.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
-                                  "resource://gre/modules/PluralForm.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Downloads",
-                                  "resource://gre/modules/Downloads.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Messaging",
-                                  "resource://gre/modules/Messaging.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "UserAgentOverrides",
-                                  "resource://gre/modules/UserAgentOverrides.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent",
-                                  "resource://gre/modules/LoginManagerContent.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerParent",
-                                  "resource://gre/modules/LoginManagerParent.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Task", "resource://gre/modules/Task.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
-
-#ifdef MOZ_SAFE_BROWSING
-  XPCOMUtils.defineLazyModuleGetter(this, "SafeBrowsing",
-                                    "resource://gre/modules/SafeBrowsing.jsm");
-#endif
-
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
-                                  "resource://gre/modules/BrowserUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
-                                  "resource://gre/modules/PrivateBrowsingUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Sanitizer",
-                                  "resource://gre/modules/Sanitizer.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Prompt",
-                                  "resource://gre/modules/Prompt.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "HelperApps",
-                                  "resource://gre/modules/HelperApps.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "SSLExceptions",
-                                  "resource://gre/modules/SSLExceptions.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "FormHistory",
-                                  "resource://gre/modules/FormHistory.jsm");
-
-XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
-                                   "@mozilla.org/uuid-generator;1",
-                                   "nsIUUIDGenerator");
-
-XPCOMUtils.defineLazyServiceGetter(this, "Profiler",
-                                   "@mozilla.org/tools/profiler;1",
-                                   "nsIProfiler");
-
-XPCOMUtils.defineLazyModuleGetter(this, "SimpleServiceDiscovery",
-                                  "resource://gre/modules/SimpleServiceDiscovery.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "CharsetMenu",
-                                  "resource://gre/modules/CharsetMenu.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "NetErrorHelper",
-                                  "resource://gre/modules/NetErrorHelper.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "PermissionsUtils",
-                                  "resource://gre/modules/PermissionsUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Preferences",
-                                  "resource://gre/modules/Preferences.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "SharedPreferences",
-                                  "resource://gre/modules/SharedPreferences.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Notifications",
-                                  "resource://gre/modules/Notifications.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "ReaderMode", "resource://gre/modules/ReaderMode.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "RuntimePermissions", "resource://gre/modules/RuntimePermissions.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "WebsiteMetadata", "resource://gre/modules/WebsiteMetadata.jsm");
-
-XPCOMUtils.defineLazyServiceGetter(this, "FontEnumerator",
-  "@mozilla.org/gfx/fontenumerator;1",
-  "nsIFontEnumerator");
-
-var lazilyLoadedBrowserScripts = [
-  ["SelectHelper", "chrome://browser/content/SelectHelper.js"],
-  ["InputWidgetHelper", "chrome://browser/content/InputWidgetHelper.js"],
-  ["MasterPassword", "chrome://browser/content/MasterPassword.js"],
-  ["PluginHelper", "chrome://browser/content/PluginHelper.js"],
-  ["OfflineApps", "chrome://browser/content/OfflineApps.js"],
-  ["Linkifier", "chrome://browser/content/Linkify.js"],
-  ["CastingApps", "chrome://browser/content/CastingApps.js"],
-  ["RemoteDebugger", "chrome://browser/content/RemoteDebugger.js"],
-];
-if (!AppConstants.RELEASE_OR_BETA) {
-  lazilyLoadedBrowserScripts.push(
-    ["WebcompatReporter", "chrome://browser/content/WebcompatReporter.js"]);
-}
-
-lazilyLoadedBrowserScripts.forEach(function (aScript) {
-  let [name, script] = aScript;
-  XPCOMUtils.defineLazyGetter(window, name, function() {
-    let sandbox = {};
-    Services.scriptloader.loadSubScript(script, sandbox);
-    return sandbox[name];
-  });
-});
-
-var lazilyLoadedObserverScripts = [
-  ["MemoryObserver", ["memory-pressure", "Memory:Dump"], "chrome://browser/content/MemoryObserver.js"],
-  ["ConsoleAPI", ["console-api-log-event"], "chrome://browser/content/ConsoleAPI.js"],
-  ["FindHelper", ["FindInPage:Opened", "FindInPage:Closed", "Tab:Selected"], "chrome://browser/content/FindHelper.js"],
-  ["PermissionsHelper", ["Permissions:Check", "Permissions:Get", "Permissions:Clear"], "chrome://browser/content/PermissionsHelper.js"],
-  ["FeedHandler", ["Feeds:Subscribe"], "chrome://browser/content/FeedHandler.js"],
-  ["Feedback", ["Feedback:Show"], "chrome://browser/content/Feedback.js"],
-  ["EmbedRT", ["GeckoView:ImportScript"], "chrome://browser/content/EmbedRT.js"],
-  ["Reader", ["Reader:AddToCache", "Reader:RemoveFromCache"], "chrome://browser/content/Reader.js"],
-  ["PrintHelper", ["Print:PDF"], "chrome://browser/content/PrintHelper.js"],
-];
-
-lazilyLoadedObserverScripts.push(
-["ActionBarHandler", ["TextSelection:Get", "TextSelection:Action", "TextSelection:End"],
-  "chrome://browser/content/ActionBarHandler.js"]
-);
-
-if (AppConstants.MOZ_WEBRTC) {
-  lazilyLoadedObserverScripts.push(
-    ["WebrtcUI", ["getUserMedia:request",
-                  "PeerConnection:request",
-                  "recording-device-events",
-                  "VideoCapture:Paused",
-                  "VideoCapture:Resumed"], "chrome://browser/content/WebrtcUI.js"])
-}
-
-lazilyLoadedObserverScripts.forEach(function (aScript) {
-  let [name, notifications, script] = aScript;
-  XPCOMUtils.defineLazyGetter(window, name, function() {
-    let sandbox = {};
-    Services.scriptloader.loadSubScript(script, sandbox);
-    return sandbox[name];
-  });
-  let observer = (s, t, d) => {
-    Services.obs.removeObserver(observer, t);
-    Services.obs.addObserver(window[name], t, false);
-    window[name].observe(s, t, d); // Explicitly notify new observer
-  };
-  notifications.forEach((notification) => {
-    Services.obs.addObserver(observer, notification, false);
-  });
-});
-
-// Lazily-loaded browser scripts that use message listeners.
-[
-  ["Reader", [
-    ["Reader:AddToCache", false],
-    ["Reader:RemoveFromCache", false],
-    ["Reader:ArticleGet", false],
-    ["Reader:DropdownClosed", true], // 'true' allows us to survive mid-air cycle-collection.
-    ["Reader:DropdownOpened", false],
-    ["Reader:FaviconRequest", false],
-    ["Reader:ToolbarHidden", false],
-    ["Reader:SystemUIVisibility", false],
-    ["Reader:UpdateReaderButton", false],
-  ], "chrome://browser/content/Reader.js"],
-].forEach(aScript => {
-  let [name, messages, script] = aScript;
-  XPCOMUtils.defineLazyGetter(window, name, function() {
-    let sandbox = {};
-    Services.scriptloader.loadSubScript(script, sandbox);
-    return sandbox[name];
-  });
-
-  let mm = window.getGroupMessageManager("browsers");
-  let listener = (message) => {
-    mm.removeMessageListener(message.name, listener);
-    let listenAfterClose = false;
-    for (let [name, laClose] of messages) {
-      if (message.name === name) {
-        listenAfterClose = laClose;
-        break;
-      }
-    }
-
-    mm.addMessageListener(message.name, window[name], listenAfterClose);
-    window[name].receiveMessage(message);
-  };
-
-  messages.forEach((message) => {
-    let [name, listenAfterClose] = message;
-    mm.addMessageListener(name, listener, listenAfterClose);
-  });
-});
-
-// Lazily-loaded JS modules that use observer notifications
-[
-  ["Home", ["HomeBanner:Get", "HomePanels:Get", "HomePanels:Authenticate", "HomePanels:RefreshView",
-            "HomePanels:Installed", "HomePanels:Uninstalled"], "resource://gre/modules/Home.jsm"],
-].forEach(module => {
-  let [name, notifications, resource] = module;
-  XPCOMUtils.defineLazyModuleGetter(this, name, resource);
-  let observer = (s, t, d) => {
-    Services.obs.removeObserver(observer, t);
-    Services.obs.addObserver(this[name], t, false);
-    this[name].observe(s, t, d); // Explicitly notify new observer
-  };
-  notifications.forEach(notification => {
-    Services.obs.addObserver(observer, notification, false);
-  });
-});
-
-XPCOMUtils.defineLazyServiceGetter(this, "Haptic",
-  "@mozilla.org/widget/hapticfeedback;1", "nsIHapticFeedback");
-
-XPCOMUtils.defineLazyServiceGetter(this, "ParentalControls",
-  "@mozilla.org/parental-controls-service;1", "nsIParentalControlsService");
-
-XPCOMUtils.defineLazyServiceGetter(this, "DOMUtils",
-  "@mozilla.org/inspector/dom-utils;1", "inIDOMUtils");
-
-XPCOMUtils.defineLazyServiceGetter(window, "URIFixup",
-  "@mozilla.org/docshell/urifixup;1", "nsIURIFixup");
-
-if (AppConstants.MOZ_WEBRTC) {
-  XPCOMUtils.defineLazyServiceGetter(this, "MediaManagerService",
-    "@mozilla.org/mediaManagerService;1", "nsIMediaManagerService");
-}
-
-XPCOMUtils.defineLazyModuleGetter(this, "Log",
-  "resource://gre/modules/AndroidLog.jsm", "AndroidLog");
-
-// Define the "dump" function as a binding of the Log.d function so it specifies
-// the "debug" priority and a log tag.
-function dump(msg) {
-  Log.d("Browser", msg);
-}
-
-const kStateActive = 0x00000001; // :active pseudoclass for elements
-
-const kXLinkNamespace = "http://www.w3.org/1999/xlink";
-
-function fuzzyEquals(a, b) {
-  return (Math.abs(a - b) < 1e-6);
-}
-
-XPCOMUtils.defineLazyGetter(this, "ContentAreaUtils", function() {
-  let ContentAreaUtils = {};
-  Services.scriptloader.loadSubScript("chrome://global/content/contentAreaUtils.js", ContentAreaUtils);
-  return ContentAreaUtils;
-});
-
-XPCOMUtils.defineLazyModuleGetter(this, "Rect", "resource://gre/modules/Geometry.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Point", "resource://gre/modules/Geometry.jsm");
-
-function resolveGeckoURI(aURI) {
-  if (!aURI)
-    throw "Can't resolve an empty uri";
-
-  if (aURI.startsWith("chrome://")) {
-    let registry = Cc['@mozilla.org/chrome/chrome-registry;1'].getService(Ci["nsIChromeRegistry"]);
-    return registry.convertChromeURL(Services.io.newURI(aURI, null, null)).spec;
-  } else if (aURI.startsWith("resource://")) {
-    let handler = Services.io.getProtocolHandler("resource").QueryInterface(Ci.nsIResProtocolHandler);
-    return handler.resolveURI(Services.io.newURI(aURI, null, null));
-  }
-  return aURI;
-}
-
-/**
- * Cache of commonly used string bundles.
- */
-var Strings = {
-  init: function () {
-    XPCOMUtils.defineLazyGetter(Strings, "brand", () => Services.strings.createBundle("chrome://branding/locale/brand.properties"));
-    XPCOMUtils.defineLazyGetter(Strings, "browser", () => Services.strings.createBundle("chrome://browser/locale/browser.properties"));
-    XPCOMUtils.defineLazyGetter(Strings, "reader", () => Services.strings.createBundle("chrome://global/locale/aboutReader.properties"));
-  },
-
-  flush: function () {
-    Services.strings.flushBundles();
-    this.init();
-  },
-};
-
-Strings.init();
-
-const kFormHelperModeDisabled = 0;
-const kFormHelperModeEnabled = 1;
-const kFormHelperModeDynamic = 2;   // disabled on tablets
-const kMaxHistoryListSize = 50;
-
-function InitLater(fn, object, name) {
-  return DelayedInit.schedule(fn, object, name, 15000 /* 15s max wait */);
-}
-
-var BrowserApp = {
-  _tabs: [],
-  _selectedTab: null,
-
-  get isTablet() {
-    let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
-    delete this.isTablet;
-    return this.isTablet = sysInfo.get("tablet");
-  },
-
-  get isOnLowMemoryPlatform() {
-    let memory = Cc["@mozilla.org/xpcom/memory-service;1"].getService(Ci.nsIMemory);
-    delete this.isOnLowMemoryPlatform;
-    return this.isOnLowMemoryPlatform = memory.isLowMemoryPlatform();
-  },
-
-  deck: null,
-
-  startup: function startup() {
-    window.QueryInterface(Ci.nsIDOMChromeWindow).browserDOMWindow = new nsBrowserAccess();
-    dump("zerdatime " + Date.now() + " - browser chrome startup finished.");
-    Services.obs.notifyObservers(this.browser, "BrowserChrome:Ready", null);
-
-    this.deck = document.getElementById("browsers");
-
-    BrowserEventHandler.init();
-
-    ViewportHandler.init();
-
-    Services.androidBridge.browserApp = this;
-
-    Services.obs.addObserver(this, "Locale:OS", false);
-    Services.obs.addObserver(this, "Locale:Changed", false);
-    Services.obs.addObserver(this, "Tab:Load", false);
-    Services.obs.addObserver(this, "Tab:Selected", false);
-    Services.obs.addObserver(this, "Tab:Closed", false);
-    Services.obs.addObserver(this, "Session:Back", false);
-    Services.obs.addObserver(this, "Session:Forward", false);
-    Services.obs.addObserver(this, "Session:Navigate", false);
-    Services.obs.addObserver(this, "Session:Reload", false);
-    Services.obs.addObserver(this, "Session:Stop", false);
-    Services.obs.addObserver(this, "SaveAs:PDF", false);
-    Services.obs.addObserver(this, "Browser:Quit", false);
-    Services.obs.addObserver(this, "ScrollTo:FocusedInput", false);
-    Services.obs.addObserver(this, "Sanitize:ClearData", false);
-    Services.obs.addObserver(this, "FullScreen:Exit", false);
-    Services.obs.addObserver(this, "Passwords:Init", false);
-    Services.obs.addObserver(this, "FormHistory:Init", false);
-    Services.obs.addObserver(this, "android-get-pref", false);
-    Services.obs.addObserver(this, "android-set-pref", false);
-    Services.obs.addObserver(this, "gather-telemetry", false);
-    Services.obs.addObserver(this, "keyword-search", false);
-    Services.obs.addObserver(this, "sessionstore-state-purge-complete", false);
-    Services.obs.addObserver(this, "Fonts:Reload", false);
-    Services.obs.addObserver(this, "Vibration:Request", false);
-
-    Messaging.addListener(this.getHistory.bind(this), "Session:GetHistory");
-
-    window.addEventListener("fullscreen", function() {
-      Messaging.sendRequest({
-        type: window.fullScreen ? "ToggleChrome:Hide" : "ToggleChrome:Show"
-      });
-    }, false);
-
-    window.addEventListener("fullscreenchange", (e) => {
-      // This event gets fired on the document and its entire ancestor chain
-      // of documents. When enabling fullscreen, it is fired on the top-level
-      // document first and goes down; when disabling the order is reversed
-      // (per spec). This means the last event on enabling will be for the innermost
-      // document, which will have fullscreenElement set correctly.
-      let doc = e.target;
-      Messaging.sendRequest({
-        type: doc.fullscreenElement ? "DOMFullScreen:Start" : "DOMFullScreen:Stop",
-        rootElement: doc.fullscreenElement == doc.documentElement
-      });
-
-      if (this.fullscreenTransitionTab) {
-        // Tab selection has changed during a fullscreen transition, handle it now.
-        let tab = this.fullscreenTransitionTab;
-        this.fullscreenTransitionTab = null;
-        this._handleTabSelected(tab);
-      }
-    }, false);
-
-    NativeWindow.init();
-    FormAssistant.init();
-    IndexedDB.init();
-    XPInstallObserver.init();
-    CharacterEncoding.init();
-    ActivityObserver.init();
-    RemoteDebugger.init();
-    UserAgentOverrides.init();
-    DesktopUserAgent.init();
-    Distribution.init();
-    Tabs.init();
-    SearchEngines.init();
-    Experiments.init();
-
-    // XXX maybe we don't do this if the launch was kicked off from external
-    Services.io.offline = false;
-
-    // Broadcast a UIReady message so add-ons know we are finished with startup
-    let event = document.createEvent("Events");
-    event.initEvent("UIReady", true, false);
-    window.dispatchEvent(event);
-
-    if (this._startupStatus) {
-      this.onAppUpdated();
-    }
-
-    if (!ParentalControls.isAllowed(ParentalControls.INSTALL_EXTENSION)) {
-      // Disable extension installs
-      Services.prefs.setIntPref("extensions.enabledScopes", 1);
-      Services.prefs.setIntPref("extensions.autoDisableScopes", 1);
-      Services.prefs.setBoolPref("xpinstall.enabled", false);
-    } else if (ParentalControls.parentalControlsEnabled) {
-      Services.prefs.clearUserPref("extensions.enabledScopes");
-      Services.prefs.clearUserPref("extensions.autoDisableScopes");
-      Services.prefs.setBoolPref("xpinstall.enabled", true);
-    }
-
-    if (ParentalControls.parentalControlsEnabled) {
-        let isBlockListEnabled = ParentalControls.isAllowed(ParentalControls.BLOCK_LIST);
-        Services.prefs.setBoolPref("browser.safebrowsing.forbiddenURIs.enabled", isBlockListEnabled);
-        Services.prefs.setBoolPref("browser.safebrowsing.allowOverride", !isBlockListEnabled);
-
-        let isTelemetryEnabled = ParentalControls.isAllowed(ParentalControls.TELEMETRY);
-        Services.prefs.setBoolPref("toolkit.telemetry.enabled", isTelemetryEnabled);
-
-        let isHealthReportEnabled = ParentalControls.isAllowed(ParentalControls.HEALTH_REPORT);
-        SharedPreferences.forApp().setBoolPref("android.not_a_preference.healthreport.uploadEnabled", isHealthReportEnabled);
-    }
-
-    let sysInfo = Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2);
-    if (sysInfo.get("version") < 16) {
-      let defaults = Services.prefs.getDefaultBranch(null);
-      defaults.setBoolPref("media.autoplay.enabled", false);
-    }
-
-    InitLater(() => {
-      // The order that context menu items are added is important
-      // Make sure the "Open in App" context menu item appears at the bottom of the list
-      this.initContextMenu();
-      ExternalApps.init();
-    }, NativeWindow, "contextmenus");
-
-    if (AppConstants.ACCESSIBILITY) {
-      InitLater(() => AccessFu.attach(window), window, "AccessFu");
-    }
-
-    // Don't delay loading content.js because when we restore reader mode tabs,
-    // we require the reader mode scripts in content.js right away.
-    let mm = window.getGroupMessageManager("browsers");
-    mm.loadFrameScript("chrome://browser/content/content.js", true);
-
-    // Notify Java that Gecko has loaded.
-    Messaging.sendRequest({ type: "Gecko:Ready" });
-
-    this.deck.addEventListener("DOMContentLoaded", function BrowserApp_delayedStartup() {
-      BrowserApp.deck.removeEventListener("DOMContentLoaded", BrowserApp_delayedStartup, false);
-
-      InitLater(() => Cu.import("resource://gre/modules/NotificationDB.jsm"));
-      InitLater(() => Cu.import("resource://gre/modules/PresentationDeviceInfoManager.jsm"));
-
-      InitLater(() => Services.obs.notifyObservers(window, "browser-delayed-startup-finished", ""));
-      InitLater(() => Messaging.sendRequest({ type: "Gecko:DelayedStartup" }));
-
-      if (!AppConstants.RELEASE_OR_BETA) {
-        InitLater(() => WebcompatReporter.init());
-      }
-
-      // Collect telemetry data.
-      // We do this at startup because we want to move away from "gather-telemetry" (bug 1127907)
-      InitLater(() => {
-        Telemetry.addData("FENNEC_TRACKING_PROTECTION_STATE", parseInt(BrowserApp.getTrackingProtectionState()));
-        Telemetry.addData("ZOOMED_VIEW_ENABLED", Services.prefs.getBoolPref("ui.zoomedview.enabled"));
-      });
-
-      InitLater(() => LightWeightThemeWebInstaller.init());
-      InitLater(() => SpatialNavigation.init(BrowserApp.deck, null), window, "SpatialNavigation");
-      InitLater(() => CastingApps.init(), window, "CastingApps");
-      InitLater(() => Services.search.init(), Services, "search");
-      InitLater(() => DownloadNotifications.init(), window, "DownloadNotifications");
-
-#ifdef MOZ_SAFE_BROWSING
-      // Bug 778855 - Perf regression if we do this here. To be addressed in bug 779008.
-      InitLater(() => SafeBrowsing.init(), window, "SafeBrowsing");
-#endif
-
-      InitLater(() => Cc["@mozilla.org/login-manager;1"].getService(Ci.nsILoginManager));
-      InitLater(() => LoginManagerParent.init(), window, "LoginManagerParent");
-
-    }, false);
-
-    // Pass caret StateChanged events to ActionBarHandler.
-    window.addEventListener("mozcaretstatechanged", e => {
-      ActionBarHandler.caretStateChangedHandler(e);
-    }, /* useCapture = */ true, /* wantsUntrusted = */ false);
-  },
-
-  get _startupStatus() {
-    delete this._startupStatus;
-
-    let savedMilestone = null;
-    try {
-      savedMilestone = Services.prefs.getCharPref("browser.startup.homepage_override.mstone");
-    } catch (e) {
-    }
-    let ourMilestone = AppConstants.MOZ_APP_VERSION;
-    this._startupStatus = "";
-    if (ourMilestone != savedMilestone) {
-      Services.prefs.setCharPref("browser.startup.homepage_override.mstone", ourMilestone);
-      this._startupStatus = savedMilestone ? "upgrade" : "new";
-    }
-
-    return this._startupStatus;
-  },
-
-  /**
-   * Pass this a locale string, such as "fr" or "es_ES".
-   */
-  setLocale: function (locale) {
-    console.log("browser.js: requesting locale set: " + locale);
-    Messaging.sendRequest({ type: "Locale:Set", locale: locale });
-  },
-
-  initContextMenu: function () {
-    // We pass a thunk in place of a raw label string. This allows the
-    // context menu to automatically accommodate locale changes without
-    // having to be rebuilt.
-    let stringGetter = name => () => Strings.browser.GetStringFromName(name);
-
-    // TODO: These should eventually move into more appropriate classes
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.openInNewTab"),
-      NativeWindow.contextmenus.linkOpenableNonPrivateContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_open_new_tab");
-        UITelemetry.addEvent("loadurl.1", "contextmenu", null);
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        ContentAreaUtils.urlSecurityCheck(url, aTarget.ownerDocument.nodePrincipal);
-        let tab = BrowserApp.addTab(url, { selected: false, parentId: BrowserApp.selectedTab.id });
-
-        let newtabStrings = Strings.browser.GetStringFromName("newtabpopup.opened");
-        let label = PluralForm.get(1, newtabStrings).replace("#1", 1);
-        let buttonLabel = Strings.browser.GetStringFromName("newtabpopup.switch");
-
-        Snackbars.show(label, Snackbars.LENGTH_LONG, {
-          action: {
-            label: buttonLabel,
-            callback: () => { BrowserApp.selectTab(tab); },
-          }
-        });
-      });
-
-    let showOpenInPrivateTab = true;
-    if ("@mozilla.org/parental-controls-service;1" in Cc) {
-      let pc = Cc["@mozilla.org/parental-controls-service;1"].createInstance(Ci.nsIParentalControlsService);
-      showOpenInPrivateTab = pc.isAllowed(Ci.nsIParentalControlsService.PRIVATE_BROWSING);
-    }
-
-    if (showOpenInPrivateTab) {
-      NativeWindow.contextmenus.add(stringGetter("contextmenu.openInPrivateTab"),
-        NativeWindow.contextmenus.linkOpenableContext,
-        function (aTarget) {
-          UITelemetry.addEvent("action.1", "contextmenu", null, "web_open_new_tab");
-          UITelemetry.addEvent("loadurl.1", "contextmenu", null);
-
-          let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-          ContentAreaUtils.urlSecurityCheck(url, aTarget.ownerDocument.nodePrincipal);
-          let tab = BrowserApp.addTab(url, {selected: false, parentId: BrowserApp.selectedTab.id, isPrivate: true});
-
-          let newtabStrings = Strings.browser.GetStringFromName("newprivatetabpopup.opened");
-          let label = PluralForm.get(1, newtabStrings).replace("#1", 1);
-          let buttonLabel = Strings.browser.GetStringFromName("newtabpopup.switch");
-          Snackbars.show(label, Snackbars.LENGTH_LONG, {
-            action: {
-              label: buttonLabel,
-              callback: () => { BrowserApp.selectTab(tab); },
-            }
-          });
-        });
-    }
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.copyLink"),
-      NativeWindow.contextmenus.linkCopyableContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_copy_link");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        NativeWindow.contextmenus._copyStringToDefaultClipboard(url);
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.copyEmailAddress"),
-      NativeWindow.contextmenus.emailLinkContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_copy_email");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        let emailAddr = NativeWindow.contextmenus._stripScheme(url);
-        NativeWindow.contextmenus._copyStringToDefaultClipboard(emailAddr);
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.copyPhoneNumber"),
-      NativeWindow.contextmenus.phoneNumberLinkContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_copy_phone");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        let phoneNumber = NativeWindow.contextmenus._stripScheme(url);
-        NativeWindow.contextmenus._copyStringToDefaultClipboard(phoneNumber);
-      });
-
-    NativeWindow.contextmenus.add({
-      label: stringGetter("contextmenu.shareLink"),
-      order: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER - 1, // Show above HTML5 menu items
-      selector: NativeWindow.contextmenus._disableRestricted("SHARE", NativeWindow.contextmenus.linkShareableContext),
-      showAsActions: function(aElement) {
-        return {
-          title: aElement.textContent.trim() || aElement.title.trim(),
-          uri: NativeWindow.contextmenus._getLinkURL(aElement),
-        };
-      },
-      icon: "drawable://ic_menu_share",
-      callback: function(aTarget) {
-        // share.1 telemetry is handled in Java via PromptList
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_share_link");
-      }
-    });
-
-    NativeWindow.contextmenus.add({
-      label: stringGetter("contextmenu.shareEmailAddress"),
-      order: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER - 1,
-      selector: NativeWindow.contextmenus._disableRestricted("SHARE", NativeWindow.contextmenus.emailLinkContext),
-      showAsActions: function(aElement) {
-        let url = NativeWindow.contextmenus._getLinkURL(aElement);
-        let emailAddr = NativeWindow.contextmenus._stripScheme(url);
-        let title = aElement.textContent || aElement.title;
-        return {
-          title: title,
-          uri: emailAddr,
-        };
-      },
-      icon: "drawable://ic_menu_share",
-      callback: function(aTarget) {
-        // share.1 telemetry is handled in Java via PromptList
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_share_email");
-      }
-    });
-
-    NativeWindow.contextmenus.add({
-      label: stringGetter("contextmenu.sharePhoneNumber"),
-      order: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER - 1,
-      selector: NativeWindow.contextmenus._disableRestricted("SHARE", NativeWindow.contextmenus.phoneNumberLinkContext),
-      showAsActions: function(aElement) {
-        let url = NativeWindow.contextmenus._getLinkURL(aElement);
-        let phoneNumber = NativeWindow.contextmenus._stripScheme(url);
-        let title = aElement.textContent || aElement.title;
-        return {
-          title: title,
-          uri: phoneNumber,
-        };
-      },
-      icon: "drawable://ic_menu_share",
-      callback: function(aTarget) {
-        // share.1 telemetry is handled in Java via PromptList
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_share_phone");
-      }
-    });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.addToContacts"),
-      NativeWindow.contextmenus._disableRestricted("ADD_CONTACT", NativeWindow.contextmenus.emailLinkContext),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_contact_email");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        Messaging.sendRequest({
-          type: "Contact:Add",
-          email: url
-        });
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.addToContacts"),
-      NativeWindow.contextmenus._disableRestricted("ADD_CONTACT", NativeWindow.contextmenus.phoneNumberLinkContext),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_contact_phone");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        Messaging.sendRequest({
-          type: "Contact:Add",
-          phone: url
-        });
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.bookmarkLink"),
-      NativeWindow.contextmenus._disableRestricted("BOOKMARK", NativeWindow.contextmenus.linkBookmarkableContext),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_bookmark");
-        UITelemetry.addEvent("save.1", "contextmenu", null, "bookmark");
-
-        let url = NativeWindow.contextmenus._getLinkURL(aTarget);
-        let title = aTarget.textContent || aTarget.title || url;
-        Messaging.sendRequest({
-          type: "Bookmark:Insert",
-          url: url,
-          title: title
-        });
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.playMedia"),
-      NativeWindow.contextmenus.mediaContext("media-paused"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_play");
-        aTarget.play();
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.pauseMedia"),
-      NativeWindow.contextmenus.mediaContext("media-playing"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_pause");
-        aTarget.pause();
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.showControls2"),
-      NativeWindow.contextmenus.mediaContext("media-hidingcontrols"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_controls_media");
-        aTarget.setAttribute("controls", true);
-      });
-
-    NativeWindow.contextmenus.add({
-      label: stringGetter("contextmenu.shareMedia"),
-      order: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER - 1,
-      selector: NativeWindow.contextmenus._disableRestricted(
-        "SHARE", NativeWindow.contextmenus.videoContext()),
-      showAsActions: function(aElement) {
-        let url = (aElement.currentSrc || aElement.src);
-        let title = aElement.textContent || aElement.title;
-        return {
-          title: title,
-          uri: url,
-          type: "video/*",
-        };
-      },
-      icon: "drawable://ic_menu_share",
-      callback: function(aTarget) {
-        // share.1 telemetry is handled in Java via PromptList
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_share_media");
-      }
-    });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.fullScreen"),
-      NativeWindow.contextmenus.videoContext("not-fullscreen"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_fullscreen");
-        aTarget.requestFullscreen();
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.mute"),
-      NativeWindow.contextmenus.mediaContext("media-unmuted"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_mute");
-        aTarget.muted = true;
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.unmute"),
-      NativeWindow.contextmenus.mediaContext("media-muted"),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_unmute");
-        aTarget.muted = false;
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.viewImage"),
-      NativeWindow.contextmenus.imageLocationCopyableContext,
-      function(aTarget) {
-        let url = aTarget.src;
-        ContentAreaUtils.urlSecurityCheck(url, aTarget.ownerDocument.nodePrincipal,
-                                          Ci.nsIScriptSecurityManager.DISALLOW_SCRIPT);
-
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_view_image");
-        UITelemetry.addEvent("loadurl.1", "contextmenu", null);
-        BrowserApp.selectedBrowser.loadURI(url);
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.copyImageLocation"),
-      NativeWindow.contextmenus.imageLocationCopyableContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_copy_image");
-
-        let url = aTarget.src;
-        NativeWindow.contextmenus._copyStringToDefaultClipboard(url);
-      });
-
-    NativeWindow.contextmenus.add({
-      label: stringGetter("contextmenu.shareImage"),
-      selector: NativeWindow.contextmenus._disableRestricted("SHARE", NativeWindow.contextmenus.imageShareableContext),
-      order: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER - 1, // Show above HTML5 menu items
-      showAsActions: function(aTarget) {
-        let doc = aTarget.ownerDocument;
-        let imageCache = Cc["@mozilla.org/image/tools;1"].getService(Ci.imgITools)
-                                                         .getImgCacheForDocument(doc);
-        let props = imageCache.findEntryProperties(aTarget.currentURI, doc);
-        let src = aTarget.src;
-        return {
-          title: src,
-          uri: src,
-          type: "image/*",
-        };
-      },
-      icon: "drawable://ic_menu_share",
-      menu: true,
-      callback: function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_share_image");
-      }
-    });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.saveImage"),
-      NativeWindow.contextmenus.imageSaveableContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_save_image");
-        UITelemetry.addEvent("save.1", "contextmenu", null, "image");
-
-        RuntimePermissions.waitForPermissions(RuntimePermissions.WRITE_EXTERNAL_STORAGE).then(function(permissionGranted) {
-            if (!permissionGranted) {
-                return;
-            }
-
-            ContentAreaUtils.saveImageURL(aTarget.currentURI.spec, null, "SaveImageTitle",
-                                          false, true, aTarget.ownerDocument.documentURIObject,
-                                          aTarget.ownerDocument);
-        });
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.setImageAs"),
-      NativeWindow.contextmenus._disableRestricted("SET_IMAGE", NativeWindow.contextmenus.imageSaveableContext),
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_background_image");
-
-        let src = aTarget.src;
-        Messaging.sendRequest({
-          type: "Image:SetAs",
-          url: src
-        });
-      });
-
-    NativeWindow.contextmenus.add(
-      function(aTarget) {
-        if (aTarget instanceof HTMLVideoElement) {
-          // If a video element is zero width or height, its essentially
-          // an HTMLAudioElement.
-          if (aTarget.videoWidth == 0 || aTarget.videoHeight == 0 )
-            return Strings.browser.GetStringFromName("contextmenu.saveAudio");
-          return Strings.browser.GetStringFromName("contextmenu.saveVideo");
-        } else if (aTarget instanceof HTMLAudioElement) {
-          return Strings.browser.GetStringFromName("contextmenu.saveAudio");
-        }
-        return Strings.browser.GetStringFromName("contextmenu.saveVideo");
-      }, NativeWindow.contextmenus.mediaSaveableContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_save_media");
-        UITelemetry.addEvent("save.1", "contextmenu", null, "media");
-
-        let url = aTarget.currentSrc || aTarget.src;
-        let filePickerTitleKey = (aTarget instanceof HTMLVideoElement &&
-                                  (aTarget.videoWidth != 0 && aTarget.videoHeight != 0))
-                                  ? "SaveVideoTitle" : "SaveAudioTitle";
-        // Skipped trying to pull MIME type out of cache for now
-        ContentAreaUtils.internalSave(url, null, null, null, null, false,
-                                      filePickerTitleKey, null, aTarget.ownerDocument.documentURIObject,
-                                      aTarget.ownerDocument, true, null);
-      });
-
-    NativeWindow.contextmenus.add(stringGetter("contextmenu.showImage"),
-      NativeWindow.contextmenus.imageBlockingPolicyContext,
-      function(aTarget) {
-        UITelemetry.addEvent("action.1", "contextmenu", null, "web_show_image");
-        aTarget.setAttribute("data-ctv-show", "true");
-        aTarget.setAttribute("src", aTarget.getAttribute("data-ctv-src"));
-
-        // Shows a snackbar to unblock all images if browser.image_blocking.enabled is enabled.
-        let blockedImgs = aTarget.ownerDocument.querySelectorAll("[data-ctv-src]");
-        if (blockedImgs.length == 0) {
-          return;
-        }
-        let message = Strings.browser.GetStringFromName("imageblocking.downloadedImage");
-        Snackbars.show(message, Snackbars.LENGTH_LONG, {
-          action: {
-            label: Strings.browser.GetStringFromName("imageblocking.showAllImages"),
-            callback: () => {
-              UITelemetry.addEvent("action.1", "toast", null, "web_show_all_image");
-              for (let i = 0; i < blockedImgs.length; ++i) {
-                blockedImgs[i].setAttribute("data-ctv-show", "true");
-                blockedImgs[i].setAttribute("src", blockedImgs[i].getAttribute("data-ctv-src"));
-              }
-            },
-          }
-        });
-    });
-  },
-
-  onAppUpdated: function() {
-    // initialize the form history and passwords databases on upgrades
-    Services.obs.notifyObservers(null, "FormHistory:Init", "");
-    Services.obs.notifyObservers(null, "Passwords:Init", "");
-
-    if (this._startupStatus === "upgrade") {
-      this._migrateUI();
-    }
-  },
-
-  _migrateUI: function() {
-    const UI_VERSION = 3;
-    let currentUIVersion = 0;
-    try {
-      currentUIVersion = Services.prefs.getIntPref("browser.migration.version");
-    } catch(ex) {}
-    if (currentUIVersion >= UI_VERSION) {
-      return;
-    }
-
-    if (currentUIVersion < 1) {
-      // Migrate user-set "plugins.click_to_play" pref. See bug 884694.
-      // Because the default value is true, a user-set pref means that the pref was set to false.
-      if (Services.prefs.prefHasUserValue("plugins.click_to_play")) {
-        Services.prefs.setIntPref("plugin.default.state", Ci.nsIPluginTag.STATE_ENABLED);
-        Services.prefs.clearUserPref("plugins.click_to_play");
-      }
-
-      // Migrate the "privacy.donottrackheader.value" pref. See bug 1042135.
-      if (Services.prefs.prefHasUserValue("privacy.donottrackheader.value")) {
-        // Make sure the doNotTrack value conforms to the conversion from
-        // three-state to two-state. (This reverts a setting of "please track me"
-        // to the default "don't say anything").
-        if (Services.prefs.getBoolPref("privacy.donottrackheader.enabled") &&
-            (Services.prefs.getIntPref("privacy.donottrackheader.value") != 1)) {
-          Services.prefs.clearUserPref("privacy.donottrackheader.enabled");
-        }
-
-        // This pref has been removed, so always clear it.
-        Services.prefs.clearUserPref("privacy.donottrackheader.value");
-      }
-
-      // Set the search activity default pref on app upgrade if it has not been set already.
-      if (!Services.prefs.prefHasUserValue("searchActivity.default.migrated")) {
-        Services.prefs.setBoolPref("searchActivity.default.migrated", true);
-        SearchEngines.migrateSearchActivityDefaultPref();
-      }
-
-      Reader.migrateCache().catch(e => Cu.reportError("Error migrating Reader cache: " + e));
-
-      // We removed this pref from user visible settings, so we should reset it.
-      // Power users can go into about:config to re-enable this if they choose.
-      if (Services.prefs.prefHasUserValue("nglayout.debug.paint_flashing")) {
-        Services.prefs.clearUserPref("nglayout.debug.paint_flashing");
-      }
-    }
-
-    if (currentUIVersion < 2) {
-      let name;
-      if (Services.prefs.prefHasUserValue("browser.search.defaultenginename")) {
-        name = Services.prefs.getCharPref("browser.search.defaultenginename");
-      }
-      if (!name && Services.prefs.prefHasUserValue("browser.search.defaultenginename.US")) {
-        name = Services.prefs.getCharPref("browser.search.defaultenginename.US");
-      }
-      if (name) {
-        Services.search.init(() => {
-          let engine = Services.search.getEngineByName(name);
-          if (engine) {
-            Services.search.defaultEngine = engine;
-            Services.obs.notifyObservers(null, "default-search-engine-migrated", "");
-          }
-        });
-      }
-    }
-
-    if (currentUIVersion < 3) {
-      const kOldSafeBrowsingPref = "browser.safebrowsing.enabled";
-      // Default value is set to true, a user pref means that the pref was
-      // set to false.
-      if (Services.prefs.prefHasUserValue(kOldSafeBrowsingPref) &&
-          !Services.prefs.getBoolPref(kOldSafeBrowsingPref)) {
-        Services.prefs.setBoolPref("browser.safebrowsing.phishing.enabled",
-                                   false);
-        // Should just remove support for the pref entirely, even if it's
-        // only in about:config
-        Services.prefs.clearUserPref(kOldSafeBrowsingPref);
-      }
-    }
-
-    // Update the migration version.
-    Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
-  },
-
-  // This function returns false during periods where the browser displayed document is
-  // different from the browser content document, so user actions and some kinds of viewport
-  // updates should be ignored. This period starts when we start loading a new page or
-  // switch tabs, and ends when the new browser content document has been drawn and handed
-  // off to the compositor.
-  isBrowserContentDocumentDisplayed: function() {
-    try {
-      if (!Services.androidBridge.isContentDocumentDisplayed(window))
-        return false;
-    } catch (e) {
-      return false;
-    }
-
-    let tab = this.selectedTab;
-    if (!tab)
-      return false;
-    return tab.contentDocumentIsDisplayed;
-  },
-
-  contentDocumentChanged: function() {
-    window.top.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils).isFirstPaint = true;
-    Services.androidBridge.contentDocumentChanged(window);
-  },
-
-  get tabs() {
-    return this._tabs;
-  },
-
-  set selectedTab(aTab) {
-    if (this._selectedTab == aTab)
-      return;
-
-    if (this._selectedTab) {
-      this._selectedTab.setActive(false);
-    }
-
-    this._selectedTab = aTab;
-    if (!aTab)
-      return;
-
-    aTab.setActive(true);
-    this.contentDocumentChanged();
-    this.deck.selectedPanel = aTab.browser;
-    // Focus the browser so that things like selection will be styled correctly.
-    aTab.browser.focus();
-  },
-
-  get selectedBrowser() {
-    if (this._selectedTab)
-      return this._selectedTab.browser;
-    return null;
-  },
-
-  getTabForId: function getTabForId(aId) {
-    let tabs = this._tabs;
-    for (let i=0; i < tabs.length; i++) {
-       if (tabs[i].id == aId)
-         return tabs[i];
-    }
-    return null;
-  },
-
-  getTabForBrowser: function getTabForBrowser(aBrowser) {
-    let tabs = this._tabs;
-    for (let i = 0; i < tabs.length; i++) {
-      if (tabs[i].browser == aBrowser)
-        return tabs[i];
-    }
-    return null;
-  },
-
-  getTabForWindow: function getTabForWindow(aWindow) {
-    let tabs = this._tabs;
-    for (let i = 0; i < tabs.length; i++) {
-      if (tabs[i].browser.contentWindow == aWindow)
-        return tabs[i];
-    }
-    return null;
-  },
-
-  getBrowserForWindow: function getBrowserForWindow(aWindow) {
-    let tabs = this._tabs;
-    for (let i = 0; i < tabs.length; i++) {
-      if (tabs[i].browser.contentWindow == aWindow)
-        return tabs[i].browser;
-    }
-    return null;
-  },
-
-  getBrowserForDocument: function getBrowserForDocument(aDocument) {
-    let tabs = this._tabs;
-    for (let i = 0; i < tabs.length; i++) {
-      if (tabs[i].browser.contentDocument == aDocument)
-        return tabs[i].browser;
-    }
-    return null;
-  },
-
-  loadURI: function loadURI(aURI, aBrowser, aParams) {
-    aBrowser = aBrowser || this.selectedBrowser;
-    if (!aBrowser)
-      return;
-
-    aParams = aParams || {};
-
-    let flags = "flags" in aParams ? aParams.flags : Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
-    let postData = ("postData" in aParams && aParams.postData) ? aParams.postData : null;
-    let referrerURI = "referrerURI" in aParams ? aParams.referrerURI : null;
-    let charset = "charset" in aParams ? aParams.charset : null;
-
-    let tab = this.getTabForBrowser(aBrowser);
-    if (tab) {
-      if ("userRequested" in aParams) tab.userRequested = aParams.userRequested;
-      tab.isSearch = ("isSearch" in aParams) ? aParams.isSearch : false;
-    }
-
-    try {
-      aBrowser.loadURIWithFlags(aURI, flags, referrerURI, charset, postData);
-    } catch(e) {
-      if (tab) {
-        let message = {
-          type: "Content:LoadError",
-          tabID: tab.id
-        };
-        Messaging.sendRequest(message);
-        dump("Handled load error: " + e)
-      }
-    }
-  },
-
-  addTab: function addTab(aURI, aParams) {
-    aParams = aParams || {};
-
-    let newTab = new Tab(aURI, aParams);
-
-    if (typeof aParams.tabIndex == "number") {
-      this._tabs.splice(aParams.tabIndex, 0, newTab);
-    } else {
-      this._tabs.push(newTab);
-    }
-
-    let selected = "selected" in aParams ? aParams.selected : true;
-    if (selected)
-      this.selectedTab = newTab;
-
-    let pinned = "pinned" in aParams ? aParams.pinned : false;
-    if (pinned) {
-      let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
-      ss.setTabValue(newTab, "appOrigin", aURI);
-    }
-
-    let evt = document.createEvent("UIEvents");
-    evt.initUIEvent("TabOpen", true, false, window, null);
-    newTab.browser.dispatchEvent(evt);
-
-    return newTab;
-  },
-
-  // Use this method to close a tab from JS. This method sends a message
-  // to Java to close the tab in the Java UI (we'll get a Tab:Closed message
-  // back from Java when that happens).
-  closeTab: function closeTab(aTab) {
-    if (!aTab) {
-      Cu.reportError("Error trying to close tab (tab doesn't exist)");
-      return;
-    }
-
-    let message = {
-      type: "Tab:Close",
-      tabID: aTab.id
-    };
-    Messaging.sendRequest(message);
-  },
-
-  // Calling this will update the state in BrowserApp after a tab has been
-  // closed in the Java UI.
-  _handleTabClosed: function _handleTabClosed(aTab, aShowUndoSnackbar) {
-    if (aTab == this.selectedTab)
-      this.selectedTab = null;
-
-    let tabIndex = this._tabs.indexOf(aTab);
-
-    let evt = document.createEvent("UIEvents");
-    evt.initUIEvent("TabClose", true, false, window, tabIndex);
-    aTab.browser.dispatchEvent(evt);
-
-    if (aShowUndoSnackbar) {
-      // Get a title for the undo close snackbar. Fall back to the URL if there is no title.
-      let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
-      let closedTabData = ss.getClosedTabs(window)[0];
-
-      let message;
-      let title = closedTabData.entries[closedTabData.index - 1].title;
-      let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(aTab.browser);
-
-      if (isPrivate) {
-        message = Strings.browser.GetStringFromName("privateClosedMessage.message");
-      } else if (title) {
-        message = Strings.browser.formatStringFromName("undoCloseToast.message", [title], 1);
-      } else {
-        message = Strings.browser.GetStringFromName("undoCloseToast.messageDefault");
-      }
-
-      Snackbars.show(message, Snackbars.LENGTH_LONG, {
-        action: {
-          label: Strings.browser.GetStringFromName("undoCloseToast.action2"),
-          callback: function() {
-            UITelemetry.addEvent("undo.1", "toast", null, "closetab");
-            ss.undoCloseTab(window, closedTabData);
-          }
-        }
-      });
-    }
-
-    aTab.destroy();
-    this._tabs.splice(tabIndex, 1);
-  },
-
-  // Use this method to select a tab from JS. This method sends a message
-  // to Java to select the tab in the Java UI (we'll get a Tab:Selected message
-  // back from Java when that happens).
-  selectTab: function selectTab(aTab) {
-    if (!aTab) {
-      Cu.reportError("Error trying to select tab (tab doesn't exist)");
-      return;
-    }
-
-    // There's nothing to do if the tab is already selected
-    if (aTab == this.selectedTab)
-      return;
-
-    let doc = this.selectedBrowser.contentDocument;
-    if (doc.fullscreenElement) {
-      // We'll finish the tab selection once the fullscreen transition has ended,
-      // remember the new tab for this.
-      this.fullscreenTransitionTab = aTab;
-      doc.exitFullscreen();
-    }
-
-    let message = {
-      type: "Tab:Select",
-      tabID: aTab.id
-    };
-    Messaging.sendRequest(message);
-  },
-
-  /**
-   * Gets an open tab with the given URL.
-   *
-   * @param  aURL URL to look for
-   * @param  aOptions Options for the search. Currently supports:
-   **  @option startsWith a Boolean indicating whether to search for a tab who's url starts with the
-   *           requested url. Useful if you want to ignore hash codes on the end of a url. For instance
-   *           to have about:downloads match about:downloads#123.
-   * @return the tab with the given URL, or null if no such tab exists
-   */
-  getTabWithURL: function getTabWithURL(aURL, aOptions) {
-    aOptions = aOptions || {};
-    let uri = Services.io.newURI(aURL, null, null);
-    for (let i = 0; i < this._tabs.length; ++i) {
-      let tab = this._tabs[i];
-      if (aOptions.startsWith) {
-        if (tab.browser.currentURI.spec.startsWith(aURL)) {
-          return tab;
-        }
-      } else {
-        if (tab.browser.currentURI.equals(uri)) {
-          return tab;
-        }
-      }
-    }
-    return null;
-  },
-
-  /**
-   * If a tab with the given URL already exists, that tab is selected.
-   * Otherwise, a new tab is opened with the given URL.
-   *
-   * @param aURL URL to open
-   * @param aParam Options used if a tab is created
-   * @param aFlags Options for the search. Currently supports:
-   **  @option startsWith a Boolean indicating whether to search for a tab who's url starts with the
-   *           requested url. Useful if you want to ignore hash codes on the end of a url. For instance
-   *           to have about:downloads match about:downloads#123.
-   */
-  selectOrAddTab: function selectOrAddTab(aURL, aParams, aFlags) {
-    let tab = this.getTabWithURL(aURL, aFlags);
-    if (tab == null) {
-      tab = this.addTab(aURL, aParams);
-    } else {
-      this.selectTab(tab);
-    }
-
-    return tab;
-  },
-
-  // This method updates the state in BrowserApp after a tab has been selected
-  // in the Java UI.
-  _handleTabSelected: function _handleTabSelected(aTab) {
-    if (this.fullscreenTransitionTab) {
-      // Defer updating to "fullscreenchange" if tab selection happened during
-      // a fullscreen transition.
-      return;
-    }
-    this.selectedTab = aTab;
-
-    let evt = document.createEvent("UIEvents");
-    evt.initUIEvent("TabSelect", true, false, window, null);
-    aTab.browser.dispatchEvent(evt);
-  },
-
-  quit: function quit(aClear = { sanitize: {}, dontSaveSession: false }) {
-    // Notify all windows that an application quit has been requested.
-    let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"].createInstance(Ci.nsISupportsPRBool);
-    Services.obs.notifyObservers(cancelQuit, "quit-application-requested", null);
-
-    // Quit aborted.
-    if (cancelQuit.data) {
-      return;
-    }
-
-    Services.obs.notifyObservers(null, "quit-application-proceeding", null);
-
-    // Tell session store to forget about this window
-    if (aClear.dontSaveSession) {
-      let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
-      ss.removeWindow(window);
-    }
-
-    BrowserApp.sanitize(aClear.sanitize, function() {
-      let appStartup = Cc["@mozilla.org/toolkit/app-startup;1"].getService(Ci.nsIAppStartup);
-      appStartup.quit(Ci.nsIAppStartup.eForceQuit);
-    }, true);
-  },
-
-  saveAsPDF: function saveAsPDF(aBrowser) {
-    RuntimePermissions.waitForPermissions(RuntimePermissions.WRITE_EXTERNAL_STORAGE).then(function(permissionGranted) {
-      if (!permissionGranted) {
-        return;
-      }
-
-      Task.spawn(function* () {
-        let fileName = ContentAreaUtils.getDefaultFileName(aBrowser.contentTitle, aBrowser.currentURI, null, null);
-        fileName = fileName.trim() + ".pdf";
-
-        let downloadsDir = yield Downloads.getPreferredDownloadsDirectory();
-        let file = OS.Path.join(downloadsDir, fileName);
-
-        // Force this to have a unique name.
-        let openedFile = yield OS.File.openUnique(file, { humanReadable: true });
-        file = openedFile.path;
-        yield openedFile.file.close();
-
-        let download = yield Downloads.createDownload({
-          source: aBrowser.contentWindow,
-          target: file,
-          saver: "pdf",
-          startTime: Date.now(),
-        });
-
-        let list = yield Downloads.getList(download.source.isPrivate ? Downloads.PRIVATE : Downloads.PUBLIC)
-        yield list.add(download);
-        yield download.start();
-      });
-    });
-  },
-
-  // These values come from pref_tracking_protection_entries in arrays.xml.
-  PREF_TRACKING_PROTECTION_ENABLED: "2",
-  PREF_TRACKING_PROTECTION_ENABLED_PB: "1",
-  PREF_TRACKING_PROTECTION_DISABLED: "0",
-
-  /**
-   * Returns the current state of the tracking protection pref.
-   * (0 = Disabled, 1 = Enabled in PB, 2 = Enabled)
-   */
-  getTrackingProtectionState: function() {
-    if (Services.prefs.getBoolPref("privacy.trackingprotection.enabled")) {
-      return this.PREF_TRACKING_PROTECTION_ENABLED;
-    }
-    if (Services.prefs.getBoolPref("privacy.trackingprotection.pbmode.enabled")) {
-      return this.PREF_TRACKING_PROTECTION_ENABLED_PB;
-    }
-    return this.PREF_TRACKING_PROTECTION_DISABLED;
-  },
-
-  sanitize: function (aItems, callback, aShutdown) {
-    let success = true;
-    var promises = [];
-
-    for (let key in aItems) {
-      if (!aItems[key])
-        continue;
-
-      key = key.replace("private.data.", "");
-
-      switch (key) {
-        case "cookies_sessions":
-          promises.push(Sanitizer.clearItem("cookies"));
-          promises.push(Sanitizer.clearItem("sessions"));
-          break;
-        default:
-          promises.push(Sanitizer.clearItem(key));
-      }
-    }
-
-    Promise.all(promises).then(function() {
-      Messaging.sendRequest({
-        type: "Sanitize:Finished",
-        success: true,
-        shutdown: aShutdown === true
-      });
-
-      if (callback) {
-        callback();
-      }
-    }).catch(function(err) {
-      Messaging.sendRequest({
-        type: "Sanitize:Finished",
-        error: err,
-        success: false,
-        shutdown: aShutdown === true
-      });
-
-      if (callback) {
-        callback();
-      }
-    })
-  },
-
-  getFocusedInput: function(aBrowser, aOnlyInputElements = false) {
-    if (!aBrowser)
-      return null;
-
-    let doc = aBrowser.contentDocument;
-    if (!doc)
-      return null;
-
-    let focused = doc.activeElement;
-    while (focused instanceof HTMLFrameElement || focused instanceof HTMLIFrameElement) {
-      doc = focused.contentDocument;
-      focused = doc.activeElement;
-    }
-
-    if (focused instanceof HTMLInputElement &&
-        (focused.mozIsTextField(false) || focused.type === "number")) {
-      return focused;
-    }
-
-    if (aOnlyInputElements)
-      return null;
-
-    if (focused && (focused instanceof HTMLTextAreaElement || focused.isContentEditable)) {
-
-      if (focused instanceof HTMLBodyElement) {
-        // we are putting focus into a contentEditable frame. scroll the frame into
-        // view instead of the contentEditable document contained within, because that
-        // results in a better user experience
-        focused = focused.ownerDocument.defaultView.frameElement;
-      }
-      return focused;
-    }
-    return null;
-  },
-
-  scrollToFocusedInput: function(aBrowser, aAllowZoom = true) {
-    let formHelperMode = Services.prefs.getIntPref("formhelper.mode");
-    if (formHelperMode == kFormHelperModeDisabled)
-      return;
-
-    let dwu = aBrowser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-    if (!dwu) {
-      return;
-    }
-
-    let apzFlushDone = function() {
-      Services.obs.removeObserver(apzFlushDone, "apz-repaints-flushed", false);
-      dwu.zoomToFocusedInput();
-    };
-
-    let paintDone = function() {
-      window.removeEventListener("MozAfterPaint", paintDone, false);
-      if (dwu.flushApzRepaints()) {
-        Services.obs.addObserver(apzFlushDone, "apz-repaints-flushed", false);
-      } else {
-        apzFlushDone();
-      }
-    };
-
-    let gotResizeWindow = false;
-    let resizeWindow = function(e) {
-      gotResizeWindow = true;
-      aBrowser.contentWindow.removeEventListener("resize", resizeWindow, false);
-      if (dwu.isMozAfterPaintPending) {
-        window.addEventListener("MozAfterPaint", paintDone, false);
-      } else {
-        paintDone();
-      }
-    }
-
-    aBrowser.contentWindow.addEventListener("resize", resizeWindow, false);
-
-    // The "resize" event sometimes fails to fire, so set a timer to catch that case
-    // and unregister the event listener. See Bug 1253469
-    setTimeout(function(e) {
-    if (!gotResizeWindow) {
-        aBrowser.contentWindow.removeEventListener("resize", resizeWindow, false);
-        dwu.zoomToFocusedInput();
-      }
-    }, 500);
-  },
-
-  getUALocalePref: function () {
-    try {
-      return Services.prefs.getComplexValue("general.useragent.locale", Ci.nsIPrefLocalizedString).data;
-    } catch (e) {
-      try {
-        return Services.prefs.getCharPref("general.useragent.locale");
-      } catch (ee) {
-        return undefined;
-      }
-    }
-  },
-
-  getOSLocalePref: function () {
-    try {
-      return Services.prefs.getCharPref("intl.locale.os");
-    } catch (e) {
-      return undefined;
-    }
-  },
-
-  setLocalizedPref: function (pref, value) {
-    let pls = Cc["@mozilla.org/pref-localizedstring;1"]
-                .createInstance(Ci.nsIPrefLocalizedString);
-    pls.data = value;
-    Services.prefs.setComplexValue(pref, Ci.nsIPrefLocalizedString, pls);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    let browser = this.selectedBrowser;
-
-    switch (aTopic) {
-
-      case "Session:Back":
-        browser.goBack();
-        break;
-
-      case "Session:Forward":
-        browser.goForward();
-        break;
-
-      case "Session:Navigate":
-          let index = JSON.parse(aData);
-          let webNav = BrowserApp.selectedTab.window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation);
-          let historySize = webNav.sessionHistory.count;
-
-          if (index < 0) {
-            index = 0;
-            Log.e("Browser", "Negative index truncated to zero");
-          } else if (index >= historySize) {
-            Log.e("Browser", "Incorrect index " + index + " truncated to " + historySize - 1);
-            index = historySize - 1;
-          }
-
-          browser.gotoIndex(index);
-          break;
-
-      case "Session:Reload": {
-        let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
-
-        // Check to see if this is a message to enable/disable mixed content blocking.
-        if (aData) {
-          let data = JSON.parse(aData);
-
-          if (data.bypassCache) {
-            flags |= Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE |
-                     Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_PROXY;
-          }
-
-          if (data.contentType === "tracking") {
-            // Convert document URI into the format used by
-            // nsChannelClassifier::ShouldEnableTrackingProtection
-            // (any scheme turned into https is correct)
-            let normalizedUrl = Services.io.newURI("https://" + browser.currentURI.hostPort, null, null);
-            if (data.allowContent) {
-              // Add the current host in the 'trackingprotection' consumer of
-              // the permission manager using a normalized URI. This effectively
-              // places this host on the tracking protection white list.
-              if (PrivateBrowsingUtils.isBrowserPrivate(browser)) {
-                PrivateBrowsingUtils.addToTrackingAllowlist(normalizedUrl);
-              } else {
-                Services.perms.add(normalizedUrl, "trackingprotection", Services.perms.ALLOW_ACTION);
-                Telemetry.addData("TRACKING_PROTECTION_EVENTS", 1);
-              }
-            } else {
-              // Remove the current host from the 'trackingprotection' consumer
-              // of the permission manager. This effectively removes this host
-              // from the tracking protection white list (any list actually).
-              if (PrivateBrowsingUtils.isBrowserPrivate(browser)) {
-                PrivateBrowsingUtils.removeFromTrackingAllowlist(normalizedUrl);
-              } else {
-                Services.perms.remove(normalizedUrl, "trackingprotection");
-                Telemetry.addData("TRACKING_PROTECTION_EVENTS", 2);
-              }
-            }
-          }
-        }
-
-        // Try to use the session history to reload so that framesets are
-        // handled properly. If the window has no session history, fall back
-        // to using the web navigation's reload method.
-        let webNav = browser.webNavigation;
-        try {
-          let sh = webNav.sessionHistory;
-          if (sh)
-            webNav = sh.QueryInterface(Ci.nsIWebNavigation);
-        } catch (e) {}
-        webNav.reload(flags);
-        break;
-      }
-
-      case "Session:Stop":
-        browser.stop();
-        break;
-
-      case "Tab:Load": {
-        let data = JSON.parse(aData);
-        let url = data.url;
-        let flags = Ci.nsIWebNavigation.LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP
-                  | Ci.nsIWebNavigation.LOAD_FLAGS_FIXUP_SCHEME_TYPOS;
-
-        // Pass LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL to prevent any loads from
-        // inheriting the currently loaded document's principal.
-        if (data.userEntered) {
-          flags |= Ci.nsIWebNavigation.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
-        }
-
-        let delayLoad = ("delayLoad" in data) ? data.delayLoad : false;
-        let params = {
-          selected: ("selected" in data) ? data.selected : !delayLoad,
-          parentId: ("parentId" in data) ? data.parentId : -1,
-          flags: flags,
-          tabID: data.tabID,
-          isPrivate: (data.isPrivate === true),
-          pinned: (data.pinned === true),
-          delayLoad: (delayLoad === true),
-          desktopMode: (data.desktopMode === true)
-        };
-
-        params.userRequested = url;
-
-        if (data.engine) {
-          let engine = Services.search.getEngineByName(data.engine);
-          if (engine) {
-            let submission = engine.getSubmission(url);
-            url = submission.uri.spec;
-            params.postData = submission.postData;
-            params.isSearch = true;
-          }
-        }
-
-        if (data.newTab) {
-          this.addTab(url, params);
-        } else {
-          if (data.tabId) {
-            // Use a specific browser instead of the selected browser, if it exists
-            let specificBrowser = this.getTabForId(data.tabId).browser;
-            if (specificBrowser)
-              browser = specificBrowser;
-          }
-          this.loadURI(url, browser, params);
-        }
-        break;
-      }
-
-      case "Tab:Selected":
-        this._handleTabSelected(this.getTabForId(parseInt(aData)));
-        break;
-
-      case "Tab:Closed": {
-        let data = JSON.parse(aData);
-        this._handleTabClosed(this.getTabForId(data.tabId), data.showUndoToast);
-        break;
-      }
-
-      case "keyword-search":
-        // This event refers to a search via the URL bar, not a bookmarks
-        // keyword search. Note that this code assumes that the user can only
-        // perform a keyword search on the selected tab.
-        this.selectedTab.isSearch = true;
-
-        // Don't store queries in private browsing mode.
-        let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(this.selectedTab.browser);
-        let query = isPrivate ? "" : aData;
-
-        let engine = aSubject.QueryInterface(Ci.nsISearchEngine);
-        Messaging.sendRequest({
-          type: "Search:Keyword",
-          identifier: engine.identifier,
-          name: engine.name,
-          query: query
-        });
-        break;
-
-      case "Browser:Quit":
-        // Add-ons like QuitNow and CleanQuit provide aData as an empty-string ("").
-        // Pass undefined to invoke the methods default parms.
-        this.quit(aData ? JSON.parse(aData) : undefined);
-        break;
-
-      case "SaveAs:PDF":
-        this.saveAsPDF(browser);
-        break;
-
-      case "ScrollTo:FocusedInput":
-        // these messages come from a change in the viewable area and not user interaction
-        // we allow scrolling to the selected input, but not zooming the page
-        this.scrollToFocusedInput(browser, false);
-        break;
-
-      case "Sanitize:ClearData":
-        this.sanitize(JSON.parse(aData));
-        break;
-
-      case "FullScreen:Exit":
-        browser.contentDocument.exitFullscreen();
-        break;
-
-      case "Passwords:Init": {
-        let storage = Cc["@mozilla.org/login-manager/storage/mozStorage;1"].
-                      getService(Ci.nsILoginManagerStorage);
-        storage.initialize();
-        Services.obs.removeObserver(this, "Passwords:Init");
-        break;
-      }
-
-      case "FormHistory:Init": {
-        // Force creation/upgrade of formhistory.sqlite
-        FormHistory.count({});
-        Services.obs.removeObserver(this, "FormHistory:Init");
-        break;
-      }
-
-      case "android-get-pref": {
-        // These pref names are not "real" pref names. They are used in the
-        // setting menu, and these are passed when initializing the setting
-        // menu. aSubject is a nsIWritableVariant to hold the pref value.
-        aSubject.QueryInterface(Ci.nsIWritableVariant);
-
-        switch (aData) {
-          // The plugin pref is actually two separate prefs, so
-          // we need to handle it differently
-          case "plugin.enable":
-            aSubject.setAsAString(PluginHelper.getPluginPreference());
-            break;
-
-          // Handle master password
-          case "privacy.masterpassword.enabled":
-            aSubject.setAsBool(MasterPassword.enabled);
-            break;
-
-          case "privacy.trackingprotection.state": {
-            aSubject.setAsAString(this.getTrackingProtectionState());
-            break;
-          }
-
-          // Crash reporter submit pref must be fetched from nsICrashReporter
-          // service.
-          case "datareporting.crashreporter.submitEnabled":
-            let crashReporterBuilt = "nsICrashReporter" in Ci &&
-                Services.appinfo instanceof Ci.nsICrashReporter;
-            if (crashReporterBuilt) {
-              aSubject.setAsBool(Services.appinfo.submitReports);
-            }
-            break;
-        }
-        break;
-      }
-
-      case "android-set-pref": {
-        // Pseudo-prefs. aSubject is an nsIWritableVariant that holds the pref
-        // value. Set to empty to signal the pref was handled.
-        aSubject.QueryInterface(Ci.nsIWritableVariant);
-        let value = aSubject.QueryInterface(Ci.nsIVariant);
-
-        switch (aData) {
-          // The plugin pref is actually two separate prefs, so we need to
-          // handle it differently.
-          case "plugin.enable":
-            PluginHelper.setPluginPreference(value);
-            aSubject.setAsEmpty();
-            break;
-
-          // MasterPassword pref is not real, we just need take action and leave
-          case "privacy.masterpassword.enabled":
-            if (MasterPassword.enabled) {
-              MasterPassword.removePassword(value);
-            } else {
-              MasterPassword.setPassword(value);
-            }
-            aSubject.setAsEmpty();
-            break;
-
-          // "privacy.trackingprotection.state" is not a "real" pref name, but
-          // it's used in the setting menu.  By default
-          // "privacy.trackingprotection.pbmode.enabled" is true, and
-          // "privacy.trackingprotection.enabled" is false.
-          case "privacy.trackingprotection.state": {
-            switch (value) {
-              // Tracking protection disabled.
-              case this.PREF_TRACKING_PROTECTION_DISABLED:
-                Services.prefs.setBoolPref("privacy.trackingprotection.pbmode.enabled", false);
-                Services.prefs.setBoolPref("privacy.trackingprotection.enabled", false);
-                break;
-              // Tracking protection only in private browsing,
-              case this.PREF_TRACKING_PROTECTION_ENABLED_PB:
-                Services.prefs.setBoolPref("privacy.trackingprotection.pbmode.enabled", true);
-                Services.prefs.setBoolPref("privacy.trackingprotection.enabled", false);
-                break;
-              // Tracking protection everywhere.
-              case this.PREF_TRACKING_PROTECTION_ENABLED:
-                Services.prefs.setBoolPref("privacy.trackingprotection.pbmode.enabled", true);
-                Services.prefs.setBoolPref("privacy.trackingprotection.enabled", true);
-                break;
-            }
-            aSubject.setAsEmpty();
-            break;
-          }
-
-          // Crash reporter preference is in a service; set and return.
-          case "datareporting.crashreporter.submitEnabled":
-            let crashReporterBuilt = "nsICrashReporter" in Ci &&
-                Services.appinfo instanceof Ci.nsICrashReporter;
-            if (crashReporterBuilt) {
-              Services.appinfo.submitReports = value;
-              aSubject.setAsEmpty();
-            }
-            break;
-        }
-        break;
-      }
-
-      case "sessionstore-state-purge-complete":
-        Messaging.sendRequest({ type: "Session:StatePurged" });
-        break;
-
-      case "gather-telemetry":
-        Messaging.sendRequest({ type: "Telemetry:Gather" });
-        break;
-
-      case "Locale:OS":
-        // We know the system locale. We use this for generating Accept-Language headers.
-        console.log("Locale:OS: " + aData);
-        let currentOSLocale = this.getOSLocalePref();
-        if (currentOSLocale == aData) {
-          break;
-        }
-
-        console.log("New OS locale.");
-
-        // Ensure that this choice is immediately persisted, because
-        // Gecko won't be told again if it forgets.
-        Services.prefs.setCharPref("intl.locale.os", aData);
-        Services.prefs.savePrefFile(null);
-
-        let appLocale = this.getUALocalePref();
-
-        this.computeAcceptLanguages(aData, appLocale);
-        break;
-
-      case "Locale:Changed":
-        if (aData) {
-          // The value provided to Locale:Changed should be a BCP47 language tag
-          // understood by Gecko -- for example, "es-ES" or "de".
-          console.log("Locale:Changed: " + aData);
-
-          // We always write a localized pref, even though sometimes the value is a char pref.
-          // (E.g., on desktop single-locale builds.)
-          this.setLocalizedPref("general.useragent.locale", aData);
-        } else {
-          // Resetting.
-          console.log("Switching to system locale.");
-          Services.prefs.clearUserPref("general.useragent.locale");
-        }
-
-        Services.prefs.setBoolPref("intl.locale.matchOS", !aData);
-
-        // Ensure that this choice is immediately persisted, because
-        // Gecko won't be told again if it forgets.
-        Services.prefs.savePrefFile(null);
-
-        // Blow away the string cache so that future lookups get the
-        // correct locale.
-        Strings.flush();
-
-        // Make sure we use the right Accept-Language header.
-        let osLocale;
-        try {
-          // This should never not be set at this point, but better safe than sorry.
-          osLocale = Services.prefs.getCharPref("intl.locale.os");
-        } catch (e) {
-        }
-
-        this.computeAcceptLanguages(osLocale, aData);
-        break;
-
-      case "Fonts:Reload":
-        FontEnumerator.updateFontList();
-        break;
-
-      case "Vibration:Request":
-        if (aSubject instanceof Navigator) {
-          let navigator = aSubject;
-          let buttons = [
-            {
-              label: Strings.browser.GetStringFromName("vibrationRequest.denyButton"),
-              callback: function() {
-                navigator.setVibrationPermission(false);
-              }
-            },
-            {
-              label: Strings.browser.GetStringFromName("vibrationRequest.allowButton"),
-              callback: function() {
-                navigator.setVibrationPermission(true);
-              },
-              positive: true
-            }
-          ];
-          let message = Strings.browser.GetStringFromName("vibrationRequest.message");
-          let options = {};
-          NativeWindow.doorhanger.show(message, "vibration-request", buttons,
-              BrowserApp.selectedTab.id, options, "VIBRATION");
-        }
-        break;
-
-      default:
-        dump('BrowserApp.observe: unexpected topic "' + aTopic + '"\n');
-        break;
-
-    }
-  },
-
-  /**
-   * Set intl.accept_languages accordingly.
-   *
-   * After Bug 881510 this will also accept a real Accept-Language choice as
-   * input; all Accept-Language logic lives here.
-   *
-   * osLocale should never be null, but this method is safe regardless.
-   * appLocale may explicitly be null.
-   */
-  computeAcceptLanguages(osLocale, appLocale) {
-    let defaultBranch = Services.prefs.getDefaultBranch(null);
-    let defaultAccept = defaultBranch.getComplexValue("intl.accept_languages", Ci.nsIPrefLocalizedString).data;
-    console.log("Default intl.accept_languages = " + defaultAccept);
-
-    // A guard for potential breakage. Bug 438031.
-    // This should not be necessary, because we're reading from the default branch,
-    // but better safe than sorry.
-    if (defaultAccept && defaultAccept.startsWith("chrome://")) {
-      defaultAccept = null;
-    } else {
-      // Ensure lowercase everywhere so we can compare.
-      defaultAccept = defaultAccept.toLowerCase();
-    }
-
-    if (appLocale) {
-      appLocale = appLocale.toLowerCase();
-    }
-
-    if (osLocale) {
-      osLocale = osLocale.toLowerCase();
-    }
-
-    // Eliminate values if they're present in the default.
-    let chosen;
-    if (defaultAccept) {
-      // intl.accept_languages is a comma-separated list, with no q-value params. Those
-      // are added when the header is generated.
-      chosen = defaultAccept.split(",")
-                            .map(String.trim)
-                            .filter((x) => (x != appLocale && x != osLocale));
-    } else {
-      chosen = [];
-    }
-
-    if (osLocale) {
-      chosen.unshift(osLocale);
-    }
-
-    if (appLocale && appLocale != osLocale) {
-      chosen.unshift(appLocale);
-    }
-
-    let result = chosen.join(",");
-    console.log("Setting intl.accept_languages to " + result);
-    this.setLocalizedPref("intl.accept_languages", result);
-  },
-
-  // nsIAndroidBrowserApp
-  get selectedTab() {
-    return this._selectedTab;
-  },
-
-  // nsIAndroidBrowserApp
-  getBrowserTab: function(tabId) {
-    return this.getTabForId(tabId);
-  },
-
-  getUITelemetryObserver: function() {
-    return UITelemetry;
-  },
-
-  // This method will return a list of history items and toIndex based on the action provided from the fromIndex to toIndex,
-  // optionally selecting selIndex (if fromIndex <= selIndex <= toIndex)
-  getHistory: function(data) {
-    let action = data.action;
-    let webNav = BrowserApp.getTabForId(data.tabId).window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation);
-    let historyIndex = webNav.sessionHistory.index;
-    let historySize = webNav.sessionHistory.count;
-    let canGoBack = webNav.canGoBack;
-    let canGoForward = webNav.canGoForward;
-    let listitems = [];
-    let fromIndex = 0;
-    let toIndex = historySize - 1;
-    let selIndex = historyIndex;
-
-    if (action == "BACK" && canGoBack) {
-      fromIndex = Math.max(historyIndex - kMaxHistoryListSize, 0);
-      toIndex = historyIndex;
-      selIndex = historyIndex;
-    } else if (action == "FORWARD" && canGoForward) {
-      fromIndex = historyIndex;
-      toIndex = Math.min(historySize - 1, historyIndex + kMaxHistoryListSize);
-      selIndex = historyIndex;
-    } else if (action == "ALL" && (canGoBack || canGoForward)){
-      fromIndex = historyIndex - kMaxHistoryListSize / 2;
-      toIndex = historyIndex + kMaxHistoryListSize / 2;
-      if (fromIndex < 0) {
-        toIndex -= fromIndex;
-      }
-
-      if (toIndex > historySize - 1) {
-        fromIndex -= toIndex - (historySize - 1);
-        toIndex = historySize - 1;
-      }
-
-      fromIndex = Math.max(fromIndex, 0);
-      selIndex = historyIndex;
-    } else {
-      // return empty list immediately.
-      return {
-        "historyItems": listitems,
-        "toIndex": toIndex
-      };
-    }
-
-    let browser = this.selectedBrowser;
-    let hist = browser.sessionHistory;
-    for (let i = toIndex; i >= fromIndex; i--) {
-      let entry = hist.getEntryAtIndex(i, false);
-      let item = {
-        title: entry.title || entry.URI.spec,
-        url: entry.URI.spec,
-        selected: (i == selIndex)
-      };
-      listitems.push(item);
-    }
-
-    return {
-      "historyItems": listitems,
-      "toIndex": toIndex
-    };
-  },
-};
-
-var NativeWindow = {
-  init: function() {
-    Services.obs.addObserver(this, "Menu:Clicked", false);
-    Services.obs.addObserver(this, "Doorhanger:Reply", false);
-    this.contextmenus.init();
-  },
-
-  loadDex: function(zipFile, implClass) {
-    Messaging.sendRequest({
-      type: "Dex:Load",
-      zipfile: zipFile,
-      impl: implClass || "Main"
-    });
-  },
-
-  unloadDex: function(zipFile) {
-    Messaging.sendRequest({
-      type: "Dex:Unload",
-      zipfile: zipFile
-    });
-  },
-
-  menu: {
-    _callbacks: [],
-    _menuId: 1,
-    toolsMenuID: -1,
-    add: function() {
-      let options;
-      if (arguments.length == 1) {
-        options = arguments[0];
-      } else if (arguments.length == 3) {
-          Log.w("Browser", "This menu addon API has been deprecated. Instead, use the options object API.");
-          options = {
-            name: arguments[0],
-            callback: arguments[2]
-          };
-      } else {
-         throw "Incorrect number of parameters";
-      }
-
-      options.type = "Menu:Add";
-      options.id = this._menuId;
-
-      Messaging.sendRequest(options);
-      this._callbacks[this._menuId] = options.callback;
-      this._menuId++;
-      return this._menuId - 1;
-    },
-
-    remove: function(aId) {
-      Messaging.sendRequest({ type: "Menu:Remove", id: aId });
-    },
-
-    update: function(aId, aOptions) {
-      if (!aOptions)
-        return;
-
-      Messaging.sendRequest({
-        type: "Menu:Update",
-        id: aId,
-        options: aOptions
-      });
-    }
-  },
-
-  doorhanger: {
-    _callbacks: {},
-    _callbacksId: 0,
-    _promptId: 0,
-
-  /**
-   * @param aOptions
-   *        An options JavaScript object holding additional properties for the
-   *        notification. The following properties are currently supported:
-   *        persistence: An integer. The notification will not automatically
-   *                     dismiss for this many page loads. If persistence is set
-   *                     to -1, the doorhanger will never automatically dismiss.
-   *        persistWhileVisible:
-   *                     A boolean. If true, a visible notification will always
-   *                     persist across location changes.
-   *        timeout:     A time in milliseconds. The notification will not
-   *                     automatically dismiss before this time.
-   *
-   *        checkbox:    A string to appear next to a checkbox under the notification
-   *                     message. The button callback functions will be called with
-   *                     the checked state as an argument.
-   *
-   *        actionText:  An object that specifies a clickable string, a type of action,
-   *                     and a bundle blob for the consumer to create a click action.
-   *                     { text: <text>,
-   *                       type: <type>,
-   *                       bundle: <blob-object> }
-   *
-   * @param aCategory
-   *        Doorhanger type to display (e.g., LOGIN)
-   */
-    show: function(aMessage, aValue, aButtons, aTabID, aOptions, aCategory) {
-      if (aButtons == null) {
-        aButtons = [];
-      }
-
-      if (aButtons.length > 2) {
-        console.log("Doorhanger can have a maximum of two buttons!");
-        aButtons.length = 2;
-      }
-
-      aButtons.forEach((function(aButton) {
-        this._callbacks[this._callbacksId] = { cb: aButton.callback, prompt: this._promptId };
-        aButton.callback = this._callbacksId;
-        this._callbacksId++;
-      }).bind(this));
-
-      this._promptId++;
-      let json = {
-        type: "Doorhanger:Add",
-        message: aMessage,
-        value: aValue,
-        buttons: aButtons,
-        // use the current tab if none is provided
-        tabID: aTabID || BrowserApp.selectedTab.id,
-        options: aOptions || {},
-        category: aCategory
-      };
-      Messaging.sendRequest(json);
-    },
-
-    hide: function(aValue, aTabID) {
-      Messaging.sendRequest({
-        type: "Doorhanger:Remove",
-        value: aValue,
-        tabID: aTabID
-      });
-    }
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    if (aTopic == "Menu:Clicked") {
-      if (this.menu._callbacks[aData])
-        this.menu._callbacks[aData]();
-    } else if (aTopic == "Doorhanger:Reply") {
-      let data = JSON.parse(aData);
-      let reply_id = data["callback"];
-
-      if (this.doorhanger._callbacks[reply_id]) {
-        // Pass the value of the optional checkbox to the callback
-        let checked = data["checked"];
-        this.doorhanger._callbacks[reply_id].cb(checked, data.inputs);
-
-        let prompt = this.doorhanger._callbacks[reply_id].prompt;
-        for (let id in this.doorhanger._callbacks) {
-          if (this.doorhanger._callbacks[id].prompt == prompt) {
-            delete this.doorhanger._callbacks[id];
-          }
-        }
-      }
-    }
-  },
-
-  contextmenus: {
-    items: {}, //  a list of context menu items that we may show
-    DEFAULT_HTML5_ORDER: -1, // Sort order for HTML5 context menu items
-
-    init: function() {
-      // Accessing "NativeWindow.contextmenus" initializes context menus if needed.
-      BrowserApp.deck.addEventListener(
-          "contextmenu", (e) => NativeWindow.contextmenus.show(e), false);
-    },
-
-    add: function() {
-      let args;
-      if (arguments.length == 1) {
-        args = arguments[0];
-      } else if (arguments.length == 3) {
-        args = {
-          label : arguments[0],
-          selector: arguments[1],
-          callback: arguments[2]
-        };
-      } else {
-        throw "Incorrect number of parameters";
-      }
-
-      if (!args.label)
-        throw "Menu items must have a name";
-
-      let cmItem = new ContextMenuItem(args);
-      this.items[cmItem.id] = cmItem;
-      return cmItem.id;
-    },
-
-    remove: function(aId) {
-      delete this.items[aId];
-    },
-
-    // Although we do not use this ourselves anymore, add-ons may still
-    // need it as it has been documented, so we shouldn't remove it.
-    SelectorContext: function(aSelector) {
-      return {
-        matches: function(aElt) {
-          if (aElt.matches)
-            return aElt.matches(aSelector);
-          return false;
-        }
-      };
-    },
-
-    linkOpenableNonPrivateContext: {
-      matches: function linkOpenableNonPrivateContextMatches(aElement) {
-        let doc = aElement.ownerDocument;
-        if (!doc || PrivateBrowsingUtils.isContentWindowPrivate(doc.defaultView)) {
-          return false;
-        }
-
-        return NativeWindow.contextmenus.linkOpenableContext.matches(aElement);
-      }
-    },
-
-    linkOpenableContext: {
-      matches: function linkOpenableContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri) {
-          let scheme = uri.scheme;
-          let dontOpen = /^(javascript|mailto|news|snews|tel)$/;
-          return (scheme && !dontOpen.test(scheme));
-        }
-        return false;
-      }
-    },
-
-    linkCopyableContext: {
-      matches: function linkCopyableContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri) {
-          let scheme = uri.scheme;
-          let dontCopy = /^(mailto|tel)$/;
-          return (scheme && !dontCopy.test(scheme));
-        }
-        return false;
-      }
-    },
-
-    linkShareableContext: {
-      matches: function linkShareableContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri) {
-          let scheme = uri.scheme;
-          let dontShare = /^(about|chrome|file|javascript|mailto|resource|tel)$/;
-          return (scheme && !dontShare.test(scheme));
-        }
-        return false;
-      }
-    },
-
-    linkBookmarkableContext: {
-      matches: function linkBookmarkableContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri) {
-          let scheme = uri.scheme;
-          let dontBookmark = /^(mailto|tel)$/;
-          return (scheme && !dontBookmark.test(scheme));
-        }
-        return false;
-      }
-    },
-
-    emailLinkContext: {
-      matches: function emailLinkContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri)
-          return uri.schemeIs("mailto");
-        return false;
-      }
-    },
-
-    phoneNumberLinkContext: {
-      matches: function phoneNumberLinkContextMatches(aElement) {
-        let uri = NativeWindow.contextmenus._getLink(aElement);
-        if (uri)
-          return uri.schemeIs("tel");
-        return false;
-      }
-    },
-
-    imageLocationCopyableContext: {
-      matches: function imageLinkCopyableContextMatches(aElement) {
-        if (aElement instanceof Ci.nsIDOMHTMLImageElement) {
-          // The image is blocked by Tap-to-load Images
-          if (aElement.hasAttribute("data-ctv-src") && !aElement.hasAttribute("data-ctv-show")) {
-            return false;
-          }
-        }
-        return (aElement instanceof Ci.nsIImageLoadingContent && aElement.currentURI);
-      }
-    },
-
-    imageSaveableContext: {
-      matches: function imageSaveableContextMatches(aElement) {
-        if (aElement instanceof Ci.nsIDOMHTMLImageElement) {
-          // The image is blocked by Tap-to-load Images
-          if (aElement.hasAttribute("data-ctv-src") && !aElement.hasAttribute("data-ctv-show")) {
-            return false;
-          }
-        }
-        if (aElement instanceof Ci.nsIImageLoadingContent && aElement.currentURI) {
-          // The image must be loaded to allow saving
-          let request = aElement.getRequest(Ci.nsIImageLoadingContent.CURRENT_REQUEST);
-          return (request && (request.imageStatus & request.STATUS_SIZE_AVAILABLE));
-        }
-        return false;
-      }
-    },
-
-    imageShareableContext: {
-      matches: function imageShareableContextMatches(aElement) {
-        let imgSrc = '';
-        if (aElement instanceof Ci.nsIDOMHTMLImageElement) {
-          imgSrc = aElement.src;
-        } else if (aElement instanceof Ci.nsIImageLoadingContent &&
-            aElement.currentURI &&
-            aElement.currentURI.spec) {
-          imgSrc = aElement.currentURI.spec;
-        }
-
-        // In order to share an image, we need to pass the image src over IPC via an Intent (in
-        // `ApplicationPackageManager.queryIntentActivities`). However, the transaction has a 1MB limit
-        // (shared by all transactions in progress) - otherwise we crash! (bug 1243305)
-        //   https://developer.android.com/reference/android/os/TransactionTooLargeException.html
-        //
-        // The transaction limit is 1MB and we arbitrarily choose to cap this transaction at 1/4 of that = 250,000 bytes.
-        // In Java, a UTF-8 character is 1-4 bytes so, 250,000 bytes / 4 bytes/char = 62,500 char
-        let MAX_IMG_SRC_LEN = 62500;
-        let isTooLong = imgSrc.length >= MAX_IMG_SRC_LEN;
-        return !isTooLong && this.NativeWindow.contextmenus.imageSaveableContext.matches(aElement);
-      }.bind(this)
-    },
-
-    mediaSaveableContext: {
-      matches: function mediaSaveableContextMatches(aElement) {
-        return (aElement instanceof HTMLVideoElement ||
-               aElement instanceof HTMLAudioElement);
-      }
-    },
-
-    imageBlockingPolicyContext: {
-      matches: function imageBlockingPolicyContextMatches(aElement) {
-        if (aElement instanceof Ci.nsIDOMHTMLImageElement && aElement.getAttribute("data-ctv-src")) {
-          // Only show the menuitem if we are blocking the image
-          if (aElement.getAttribute("data-ctv-show") == "true") {
-            return false;
-          }
-          return true;
-        }
-        return false;
-      }
-    },
-
-    mediaContext: function(aMode) {
-      return {
-        matches: function(aElt) {
-          if (aElt instanceof Ci.nsIDOMHTMLMediaElement) {
-            let hasError = aElt.error != null || aElt.networkState == aElt.NETWORK_NO_SOURCE;
-            if (hasError)
-              return false;
-
-            let paused = aElt.paused || aElt.ended;
-            if (paused && aMode == "media-paused")
-              return true;
-            if (!paused && aMode == "media-playing")
-              return true;
-            let controls = aElt.controls;
-            if (!controls && aMode == "media-hidingcontrols")
-              return true;
-
-            let muted = aElt.muted;
-            if (muted && aMode == "media-muted")
-              return true;
-            else if (!muted && aMode == "media-unmuted")
-              return true;
-          }
-          return false;
-        }
-      };
-    },
-
-    videoContext: function(aMode) {
-      return {
-        matches: function(aElt) {
-          if (aElt instanceof HTMLVideoElement) {
-            if (!aMode) {
-              return true;
-            }
-            var isFullscreen = aElt.ownerDocument.fullscreenElement == aElt;
-            if (aMode == "not-fullscreen") {
-              return !isFullscreen;
-            }
-            if (aMode == "fullscreen") {
-              return isFullscreen;
-            }
-          }
-          return false;
-        }
-      };
-    },
-
-    /* Holds a WeakRef to the original target element this context menu was shown for.
-     * Most API's will have to walk up the tree from this node to find the correct element
-     * to act on
-     */
-    get _target() {
-      if (this._targetRef)
-        return this._targetRef.get();
-      return null;
-    },
-
-    set _target(aTarget) {
-      if (aTarget)
-        this._targetRef = Cu.getWeakReference(aTarget);
-      else this._targetRef = null;
-    },
-
-    get defaultContext() {
-      delete this.defaultContext;
-      return this.defaultContext = Strings.browser.GetStringFromName("browser.menu.context.default");
-    },
-
-    /* Gets menuitems for an arbitrary node
-     * Parameters:
-     *   element - The element to look at. If this element has a contextmenu attribute, the
-     *             corresponding contextmenu will be used.
-     */
-    _getHTMLContextMenuItemsForElement: function(element) {
-      let htmlMenu = element.contextMenu;
-      if (!htmlMenu) {
-        return [];
-      }
-
-      htmlMenu.QueryInterface(Components.interfaces.nsIHTMLMenu);
-      htmlMenu.sendShowEvent();
-
-      return this._getHTMLContextMenuItemsForMenu(htmlMenu, element);
-    },
-
-    /* Add a menuitem for an HTML <menu> node
-     * Parameters:
-     *   menu - The <menu> element to iterate through for menuitems
-     *   target - The target element these context menu items are attached to
-     */
-    _getHTMLContextMenuItemsForMenu: function(menu, target) {
-      let items = [];
-      for (let i = 0; i < menu.childNodes.length; i++) {
-        let elt = menu.childNodes[i];
-        if (!elt.label)
-          continue;
-
-        items.push(new HTMLContextMenuItem(elt, target));
-      }
-
-      return items;
-    },
-
-    // Searches the current list of menuitems to show for any that match this id
-    _findMenuItem: function(aId) {
-      if (!this.menus) {
-        return null;
-      }
-
-      for (let context in this.menus) {
-        let menu = this.menus[context];
-        for (let i = 0; i < menu.length; i++) {
-          if (menu[i].id === aId) {
-            return menu[i];
-          }
-        }
-      }
-      return null;
-    },
-
-    // Returns true if there are any context menu items to show
-    _shouldShow: function() {
-      for (let context in this.menus) {
-        let menu = this.menus[context];
-        if (menu.length > 0) {
-          return true;
-        }
-      }
-      return false;
-    },
-
-    /* Returns a label to be shown in a tabbed ui if there are multiple "contexts". For instance, if this
-     * is an image inside an <a> tag, we may have a "link" context and an "image" one.
-     */
-    _getContextType: function(element) {
-      // For anchor nodes, we try to use the scheme to pick a string
-      if (element instanceof Ci.nsIDOMHTMLAnchorElement) {
-        let uri = this.makeURI(this._getLinkURL(element));
-        try {
-          return Strings.browser.GetStringFromName("browser.menu.context." + uri.scheme);
-        } catch(ex) { }
-      }
-
-      // Otherwise we try the nodeName
-      try {
-        return Strings.browser.GetStringFromName("browser.menu.context." + element.nodeName.toLowerCase());
-      } catch(ex) { }
-
-      // Fallback to the default
-      return this.defaultContext;
-    },
-
-    // Adds context menu items added through the add-on api
-    _getNativeContextMenuItems: function(element, x, y) {
-      let res = [];
-      for (let itemId of Object.keys(this.items)) {
-        let item = this.items[itemId];
-
-        if (!this._findMenuItem(item.id) && item.matches(element, x, y)) {
-          res.push(item);
-        }
-      }
-
-      return res;
-    },
-
-    /* Checks if there are context menu items to show, and if it finds them
-     * sends a contextmenu event to content. We also send showing events to
-     * any html5 context menus we are about to show, and fire some local notifications
-     * for chrome consumers to do lazy menuitem construction
-     */
-    show: function(event) {
-      // Android Long-press / contextmenu event provides clientX/Y data. This is not provided
-      // by mochitest: test_browserElement_inproc_ContextmenuEvents.html.
-      if (!event.clientX || !event.clientY) {
-        return;
-      }
-
-      // If the event was already defaultPrevented by somebody (web content, or
-      // some other part of gecko), then don't do anything with it.
-      if (event.defaultPrevented) {
-        return;
-      }
-
-      // Use the highlighted element for the context menu target. When accessibility is
-      // enabled, elements may not be highlighted so use the event target instead.
-      this._target = BrowserEventHandler._highlightElement || event.target;
-      if (!this._target) {
-        return;
-      }
-
-      // Try to build a list of contextmenu items. If successful, actually show the
-      // native context menu by passing the list to Java.
-      this._buildMenu(event.clientX, event.clientY);
-      if (this._shouldShow()) {
-        BrowserEventHandler._cancelTapHighlight();
-
-        // Consume / preventDefault the event, and show the contextmenu.
-        event.preventDefault();
-        this._innerShow(this._target, event.clientX, event.clientY);
-        this._target = null;
-
-        return;
-      }
-
-      // If no context-menu for long-press event, it may be meant to trigger text-selection.
-      this.menus = null;
-      Services.obs.notifyObservers(
-        {target: this._target, x: event.clientX, y: event.clientY}, "context-menu-not-shown", "");
-    },
-
-    // Returns a title for a context menu. If no title attribute exists, will fall back to looking for a url
-    _getTitle: function(node) {
-      if (node.hasAttribute && node.hasAttribute("title")) {
-        return node.getAttribute("title");
-      }
-      return this._getUrl(node);
-    },
-
-    // Returns a url associated with a node
-    _getUrl: function(node) {
-      if ((node instanceof Ci.nsIDOMHTMLAnchorElement && node.href) ||
-          (node instanceof Ci.nsIDOMHTMLAreaElement && node.href)) {
-        return this._getLinkURL(node);
-      } else if (node instanceof Ci.nsIImageLoadingContent && node.currentURI) {
-        // The image is blocked by Tap-to-load Images
-        let originalURL = node.getAttribute("data-ctv-src");
-        if (originalURL) {
-          return originalURL;
-        }
-        return node.currentURI.spec;
-      } else if (node instanceof Ci.nsIDOMHTMLMediaElement) {
-        let srcUrl = node.currentSrc || node.src;
-        // If URL prepended with blob or mediasource, we'll remove it.
-        return srcUrl.replace(/^(?:blob|mediasource):/, '');
-      }
-
-      return "";
-    },
-
-    // Adds an array of menuitems to the current list of items to show, in the correct context
-    _addMenuItems: function(items, context) {
-        if (!this.menus[context]) {
-          this.menus[context] = [];
-        }
-        this.menus[context] = this.menus[context].concat(items);
-    },
-
-    /* Does the basic work of building a context menu to show. Will combine HTML and Native
-     * context menus items, as well as sorting menuitems into different menus based on context.
-     */
-    _buildMenu: function(x, y) {
-      // now walk up the tree and for each node look for any context menu items that apply
-      let element = this._target;
-
-      // this.menus holds a hashmap of "contexts" to menuitems associated with that context
-      // For instance, if the user taps an image inside a link, we'll have something like:
-      // {
-      //   link:  [ ContextMenuItem, ContextMenuItem ]
-      //   image: [ ContextMenuItem, ContextMenuItem ]
-      // }
-      this.menus = {};
-
-      while (element) {
-        let context = this._getContextType(element);
-
-        // First check for any html5 context menus that might exist...
-        var items = this._getHTMLContextMenuItemsForElement(element);
-        if (items.length > 0) {
-          this._addMenuItems(items, context);
-        }
-
-        // then check for any context menu items registered in the ui.
-        items = this._getNativeContextMenuItems(element, x, y);
-        if (items.length > 0) {
-          this._addMenuItems(items, context);
-        }
-
-        // walk up the tree and find more items to show
-        element = element.parentNode;
-      }
-    },
-
-    // Walks the DOM tree to find a title from a node
-    _findTitle: function(node) {
-      let title = "";
-      while(node && !title) {
-        title = this._getTitle(node);
-        node = node.parentNode;
-      }
-      return title;
-    },
-
-    /* Reformats the list of menus to show into an object that can be sent to Prompt.jsm
-     * If there is one menu, will return a flat array of menuitems. If there are multiple
-     * menus, will return an array with appropriate tabs/items inside it. i.e. :
-     * [
-     *    { label: "link", items: [...] },
-     *    { label: "image", items: [...] }
-     * ]
-     */
-    _reformatList: function(target) {
-      let contexts = Object.keys(this.menus);
-
-      if (contexts.length === 1) {
-        // If there's only one context, we'll only show a single flat single select list
-        return this._reformatMenuItems(target, this.menus[contexts[0]]);
-      }
-
-      // If there are multiple contexts, we'll only show a tabbed ui with multiple lists
-      return this._reformatListAsTabs(target, this.menus);
-    },
-
-    /* Reformats the list of menus to show into an object that can be sent to Prompt.jsm's
-     * addTabs method. i.e. :
-     * { link: [...], image: [...] } becomes
-     * [ { label: "link", items: [...] } ]
-     *
-     * Also reformats items and resolves any parmaeters that aren't known until display time
-     * (for instance Helper app menu items adjust their title to reflect what Helper App can be used for this link).
-     */
-    _reformatListAsTabs: function(target, menus) {
-      let itemArray = [];
-
-      // Sort the keys so that "link" is always first
-      let contexts = Object.keys(this.menus);
-      contexts.sort((context1, context2) => {
-        if (context1 === this.defaultContext) {
-          return -1;
-        } else if (context2 === this.defaultContext) {
-          return 1;
-        }
-        return 0;
-      });
-
-      contexts.forEach(context => {
-        itemArray.push({
-          label: context,
-          items: this._reformatMenuItems(target, menus[context])
-        });
-      });
-
-      return itemArray;
-    },
-
-    /* Reformats an array of ContextMenuItems into an array that can be handled by Prompt.jsm. Also reformats items
-     * and resolves any parmaeters that aren't known until display time
-     * (for instance Helper app menu items adjust their title to reflect what Helper App can be used for this link).
-     */
-    _reformatMenuItems: function(target, menuitems) {
-      let itemArray = [];
-
-      for (let i = 0; i < menuitems.length; i++) {
-        let t = target;
-        while(t) {
-          if (menuitems[i].matches(t)) {
-            let val = menuitems[i].getValue(t);
-
-            // hidden menu items will return null from getValue
-            if (val) {
-              itemArray.push(val);
-              break;
-            }
-          }
-
-          t = t.parentNode;
-        }
-      }
-
-      return itemArray;
-    },
-
-    // Called where we're finally ready to actually show the contextmenu. Sorts the items and shows a prompt.
-    _innerShow: function(target, x, y) {
-      Haptic.performSimpleAction(Haptic.LongPress);
-
-      // spin through the tree looking for a title for this context menu
-      let title = this._findTitle(target);
-
-      for (let context in this.menus) {
-        let menu = this.menus[context];
-        menu.sort((a,b) => {
-          if (a.order === b.order) {
-            return 0;
-          }
-          return (a.order > b.order) ? 1 : -1;
-        });
-      }
-
-      let useTabs = Object.keys(this.menus).length > 1;
-      let prompt = new Prompt({
-        window: target.ownerDocument.defaultView,
-        title: useTabs ? undefined : title
-      });
-
-      let items = this._reformatList(target);
-      if (useTabs) {
-        prompt.addTabs({
-          id: "tabs",
-          items: items
-        });
-      } else {
-        prompt.setSingleChoiceItems(items);
-      }
-
-      prompt.show(this._promptDone.bind(this, target, x, y, items));
-    },
-
-    // Called when the contextmenu prompt is closed
-    _promptDone: function(target, x, y, items, data) {
-      if (data.button == -1) {
-        // Prompt was cancelled, or an ActionView was used.
-        return;
-      }
-
-      let selectedItemId;
-      if (data.tabs) {
-        let menu = items[data.tabs.tab];
-        selectedItemId = menu.items[data.tabs.item].id;
-      } else {
-        selectedItemId = items[data.list[0]].id
-      }
-
-      let selectedItem = this._findMenuItem(selectedItemId);
-      this.menus = null;
-
-      if (!selectedItem || !selectedItem.matches || !selectedItem.callback) {
-        return;
-      }
-
-      // for menuitems added using the native UI, pass the dom element that matched that item to the callback
-      while (target) {
-        if (selectedItem.matches(target, x, y)) {
-          selectedItem.callback(target, x, y);
-          break;
-        }
-        target = target.parentNode;
-      }
-    },
-
-    // XXX - These are stolen from Util.js, we should remove them if we bring it back
-    makeURLAbsolute: function makeURLAbsolute(base, url) {
-      // Note:  makeURI() will throw if url is not a valid URI
-      return this.makeURI(url, null, this.makeURI(base)).spec;
-    },
-
-    makeURI: function makeURI(aURL, aOriginCharset, aBaseURI) {
-      return Services.io.newURI(aURL, aOriginCharset, aBaseURI);
-    },
-
-    _getLink: function(aElement) {
-      if (aElement.nodeType == Ci.nsIDOMNode.ELEMENT_NODE &&
-          ((aElement instanceof Ci.nsIDOMHTMLAnchorElement && aElement.href) ||
-          (aElement instanceof Ci.nsIDOMHTMLAreaElement && aElement.href) ||
-          aElement instanceof Ci.nsIDOMHTMLLinkElement ||
-          aElement.getAttributeNS(kXLinkNamespace, "type") == "simple")) {
-        try {
-          let url = this._getLinkURL(aElement);
-          return Services.io.newURI(url, null, null);
-        } catch (e) {}
-      }
-      return null;
-    },
-
-    _disableRestricted: function _disableRestricted(restriction, selector) {
-      return {
-        matches: function _disableRestrictedMatches(aElement, aX, aY) {
-          if (!ParentalControls.isAllowed(ParentalControls[restriction])) {
-            return false;
-          }
-
-          return selector.matches(aElement, aX, aY);
-        }
-      };
-    },
-
-    _getLinkURL: function ch_getLinkURL(aLink) {
-      let href = aLink.href;
-      if (href)
-        return href;
-
-      href = aLink.getAttribute("href") ||
-             aLink.getAttributeNS(kXLinkNamespace, "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 this.makeURLAbsolute(aLink.baseURI, href);
-    },
-
-    _copyStringToDefaultClipboard: function(aString) {
-      let clipboard = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
-      clipboard.copyString(aString);
-      Snackbars.show(Strings.browser.GetStringFromName("selectionHelper.textCopied"), Snackbars.LENGTH_LONG);
-    },
-
-    _stripScheme: function(aString) {
-      let index = aString.indexOf(":");
-      return aString.slice(index + 1);
-    }
-  }
-};
-
-XPCOMUtils.defineLazyModuleGetter(this, "PageActions",
-                                  "resource://gre/modules/PageActions.jsm");
-
-// These alias to the old, deprecated NativeWindow interfaces
-[
-  ["pageactions", "resource://gre/modules/PageActions.jsm", "PageActions"],
-  ["toast", "resource://gre/modules/Snackbars.jsm", "Snackbars"]
-].forEach(item => {
-  let [name, script, exprt] = item;
-
-  XPCOMUtils.defineLazyGetter(NativeWindow, name, () => {
-    var err = Strings.browser.formatStringFromName("nativeWindow.deprecated", ["NativeWindow." + name, script], 2);
-    Cu.reportError(err);
-
-    let sandbox = {};
-    Cu.import(script, sandbox);
-    return sandbox[exprt];
-  });
-});
-
-var LightWeightThemeWebInstaller = {
-  init: function sh_init() {
-    let temp = {};
-    Cu.import("resource://gre/modules/LightweightThemeConsumer.jsm", temp);
-    let theme = new temp.LightweightThemeConsumer(document);
-    BrowserApp.deck.addEventListener("InstallBrowserTheme", this, false, true);
-    BrowserApp.deck.addEventListener("PreviewBrowserTheme", this, false, true);
-    BrowserApp.deck.addEventListener("ResetBrowserThemePreview", this, false, true);
-
-    if (ParentalControls.parentalControlsEnabled &&
-        !this._manager.currentTheme &&
-        ParentalControls.isAllowed(ParentalControls.DEFAULT_THEME)) {
-      // We are using the DEFAULT_THEME restriction to differentiate between restricted profiles & guest mode - Bug 1199596
-      this._installParentalControlsTheme();
-    }
-  },
-
-  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 () {
-    let temp = {};
-    Cu.import("resource://gre/modules/LightweightThemeManager.jsm", temp);
-    delete this._manager;
-    return this._manager = temp.LightweightThemeManager;
-  },
-
-  _installParentalControlsTheme: function() {
-    let mgr = this._manager;
-    let parentalControlsTheme = {
-      "headerURL": "resource://android/assets/parental_controls_theme.png",
-      "name": "Parental Controls Theme",
-      "id": "parental-controls-theme@mozilla.org"
-    };
-
-    mgr.addBuiltInTheme(parentalControlsTheme);
-    mgr.themeChanged(parentalControlsTheme);
-  },
-
-  _installRequest: function (event) {
-    let node = event.target;
-    let data = this._getThemeFromNode(node);
-    if (!data)
-      return;
-
-    if (this._isAllowed(node)) {
-      this._install(data);
-      return;
-    }
-
-    let allowButtonText = Strings.browser.GetStringFromName("lwthemeInstallRequest.allowButton");
-    let message = Strings.browser.formatStringFromName("lwthemeInstallRequest.message", [node.ownerDocument.location.hostname], 1);
-    let buttons = [{
-      label: allowButtonText,
-      callback: function () {
-        LightWeightThemeWebInstaller._install(data);
-      },
-      positive: true
-    }];
-
-    NativeWindow.doorhanger.show(message, "Personas", buttons, BrowserApp.selectedTab.id);
-  },
-
-  _install: function (newLWTheme) {
-    this._manager.currentTheme = newLWTheme;
-  },
-
-  _previewWindow: null,
-  _preview: function (event) {
-    if (!this._isAllowed(event.target))
-      return;
-    let data = this._getThemeFromNode(event.target);
-    if (!data)
-      return;
-    this._resetPreview();
-
-    this._previewWindow = event.target.ownerDocument.defaultView;
-    this._previewWindow.addEventListener("pagehide", this, true);
-    BrowserApp.deck.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;
-    BrowserApp.deck.removeEventListener("TabSelect", this, false);
-
-    this._manager.resetPreview();
-  },
-
-  _isAllowed: function (node) {
-    // Make sure the whitelist has been imported to permissions
-    PermissionsUtils.importFromPrefs("xpinstall.", "install");
-
-    let pm = Services.perms;
-
-    let uri = node.ownerDocument.documentURIObject;
-    if (!uri.schemeIs("https")) {
-      return false;
-    }
-
-    return pm.testPermission(uri, "install") == pm.ALLOW_ACTION;
-  },
-
-  _getThemeFromNode: function (node) {
-    return this._manager.parseTheme(node.getAttribute("data-browsertheme"), node.baseURI);
-  }
-};
-
-var DesktopUserAgent = {
-  DESKTOP_UA: null,
-  TCO_DOMAIN: "t.co",
-  TCO_REPLACE: / Gecko.*/,
-
-  init: function ua_init() {
-    Services.obs.addObserver(this, "DesktopMode:Change", false);
-    UserAgentOverrides.addComplexOverride(this.onRequest.bind(this));
-
-    // See https://developer.mozilla.org/en/Gecko_user_agent_string_reference
-    this.DESKTOP_UA = Cc["@mozilla.org/network/protocol;1?name=http"]
-                        .getService(Ci.nsIHttpProtocolHandler).userAgent
-                        .replace(/Android \d.+?; [a-zA-Z]+/, "X11; Linux x86_64")
-                        .replace(/Gecko\/[0-9\.]+/, "Gecko/20100101");
-  },
-
-  onRequest: function(channel, defaultUA) {
-    if (AppConstants.NIGHTLY_BUILD && this.TCO_DOMAIN == channel.URI.host) {
-      // Force the referrer
-      channel.referrer = channel.URI;
-
-      // Send a bot-like UA to t.co to get a real redirect. We strip off the
-      // "Gecko/x.y Firefox/x.y" part
-      return defaultUA.replace(this.TCO_REPLACE, "");
-    }
-
-    let channelWindow = this._getWindowForRequest(channel);
-    let tab = BrowserApp.getTabForWindow(channelWindow);
-    if (tab) {
-      return this.getUserAgentForTab(tab);
-    }
-
-    return null;
-  },
-
-  getUserAgentForWindow: function ua_getUserAgentForWindow(aWindow) {
-    let tab = BrowserApp.getTabForWindow(aWindow.top);
-    if (tab) {
-      return this.getUserAgentForTab(tab);
-    }
-
-    return null;
-  },
-
-  getUserAgentForTab: function ua_getUserAgentForTab(aTab) {
-    // Send desktop UA if "Request Desktop Site" is enabled.
-    if (aTab.desktopMode) {
-      return this.DESKTOP_UA;
-    }
-
-    return null;
-  },
-
-  _getRequestLoadContext: function ua_getRequestLoadContext(aRequest) {
-    if (aRequest && aRequest.notificationCallbacks) {
-      try {
-        return aRequest.notificationCallbacks.getInterface(Ci.nsILoadContext);
-      } catch (ex) { }
-    }
-
-    if (aRequest && aRequest.loadGroup && aRequest.loadGroup.notificationCallbacks) {
-      try {
-        return aRequest.loadGroup.notificationCallbacks.getInterface(Ci.nsILoadContext);
-      } catch (ex) { }
-    }
-
-    return null;
-  },
-
-  _getWindowForRequest: function ua_getWindowForRequest(aRequest) {
-    let loadContext = this._getRequestLoadContext(aRequest);
-    if (loadContext) {
-      try {
-        return loadContext.associatedWindow;
-      } catch (e) {
-        // loadContext.associatedWindow can throw when there's no window
-      }
-    }
-    return null;
-  },
-
-  observe: function ua_observe(aSubject, aTopic, aData) {
-    if (aTopic === "DesktopMode:Change") {
-      let args = JSON.parse(aData);
-      let tab = BrowserApp.getTabForId(args.tabId);
-      if (tab) {
-        tab.reloadWithMode(args.desktopMode);
-      }
-    }
-  }
-};
-
-
-function nsBrowserAccess() {
-}
-
-nsBrowserAccess.prototype = {
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIBrowserDOMWindow]),
-
-  _getBrowser: function _getBrowser(aURI, aOpener, aWhere, aFlags) {
-    let isExternal = !!(aFlags & Ci.nsIBrowserDOMWindow.OPEN_EXTERNAL);
-    if (isExternal && aURI && aURI.schemeIs("chrome"))
-      return null;
-
-    let loadflags = isExternal ?
-                      Ci.nsIWebNavigation.LOAD_FLAGS_FROM_EXTERNAL :
-                      Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
-    if (aWhere == Ci.nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW) {
-      if (isExternal) {
-        aWhere = Services.prefs.getIntPref("browser.link.open_external");
-      } else {
-        aWhere = Services.prefs.getIntPref("browser.link.open_newwindow");
-      }
-    }
-
-    Services.io.offline = false;
-
-    let referrer;
-    if (aOpener) {
-      try {
-        let location = aOpener.location;
-        referrer = Services.io.newURI(location, null, null);
-      } catch(e) { }
-    }
-
-    let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
-    let pinned = false;
-
-    if (aURI && aWhere == Ci.nsIBrowserDOMWindow.OPEN_SWITCHTAB) {
-      pinned = true;
-      let spec = aURI.spec;
-      let tabs = BrowserApp.tabs;
-      for (let i = 0; i < tabs.length; i++) {
-        let appOrigin = ss.getTabValue(tabs[i], "appOrigin");
-        if (appOrigin == spec) {
-          let tab = tabs[i];
-          BrowserApp.selectTab(tab);
-          return tab.browser;
-        }
-      }
-    }
-
-    // If OPEN_SWITCHTAB was not handled above, we need to open a new tab,
-    // along with other OPEN_ values that create a new tab.
-    let newTab = (aWhere == Ci.nsIBrowserDOMWindow.OPEN_NEWWINDOW ||
-                  aWhere == Ci.nsIBrowserDOMWindow.OPEN_NEWTAB ||
-                  aWhere == Ci.nsIBrowserDOMWindow.OPEN_SWITCHTAB);
-    let isPrivate = false;
-
-    if (newTab) {
-      let parentId = -1;
-      if (!isExternal && aOpener) {
-        let parent = BrowserApp.getTabForWindow(aOpener.top);
-        if (parent) {
-          parentId = parent.id;
-          isPrivate = PrivateBrowsingUtils.isBrowserPrivate(parent.browser);
-        }
-      }
-
-      let openerWindow = (aFlags & Ci.nsIBrowserDOMWindow.OPEN_NO_OPENER) ? null : aOpener;
-      // BrowserApp.addTab calls loadURIWithFlags with the appropriate params
-      let tab = BrowserApp.addTab(aURI ? aURI.spec : "about:blank", { flags: loadflags,
-                                                                      referrerURI: referrer,
-                                                                      external: isExternal,
-                                                                      parentId: parentId,
-                                                                      opener: openerWindow,
-                                                                      selected: true,
-                                                                      isPrivate: isPrivate,
-                                                                      pinned: pinned });
-
-      return tab.browser;
-    }
-
-    // OPEN_CURRENTWINDOW and illegal values
-    let browser = BrowserApp.selectedBrowser;
-    if (aURI && browser) {
-      browser.loadURIWithFlags(aURI.spec, loadflags, referrer, null, null);
-    }
-
-    return browser;
-  },
-
-  openURI: function browser_openURI(aURI, aOpener, aWhere, aFlags) {
-    let browser = this._getBrowser(aURI, aOpener, aWhere, aFlags);
-    return browser ? browser.contentWindow : null;
-  },
-
-  openURIInFrame: function browser_openURIInFrame(aURI, aParams, aWhere, aFlags) {
-    let browser = this._getBrowser(aURI, null, aWhere, aFlags);
-    return browser ? browser.QueryInterface(Ci.nsIFrameLoaderOwner) : null;
-  },
-
-  isTabContentWindow: function(aWindow) {
-    return BrowserApp.getBrowserForWindow(aWindow) != null;
-  },
-
-  canClose() {
-    return BrowserUtils.canCloseWindow(window);
-  },
-};
-
-
-function Tab(aURL, aParams) {
-  this.filter = null;
-  this.browser = null;
-  this.id = 0;
-  this.lastTouchedAt = Date.now();
-  this._zoom = 1.0;
-  this._drawZoom = 1.0;
-  this._restoreZoom = false;
-  this.userScrollPos = { x: 0, y: 0 };
-  this.contentDocumentIsDisplayed = true;
-  this.pluginDoorhangerTimeout = null;
-  this.shouldShowPluginDoorhanger = true;
-  this.clickToPlayPluginsActivated = false;
-  this.desktopMode = false;
-  this.originalURI = null;
-  this.hasTouchListener = false;
-  this.playingAudio = false;
-
-  this.create(aURL, aParams);
-}
-
-/*
- * Sanity limit for URIs passed to UI code.
- *
- * 2000 is the typical industry limit, largely due to older IE versions.
- *
- * We use 25000, so we'll allow almost any value through.
- *
- * Still, this truncation doesn't affect history, so this is only a practical
- * concern in two ways: the truncated value is used when editing URIs, and as
- * the key for favicon fetches.
- */
-const MAX_URI_LENGTH = 25000;
-
-/*
- * Similar restriction for titles. This is only a display concern.
- */
-const MAX_TITLE_LENGTH = 255;
-
-/**
- * Ensure that a string is of a sane length.
- */
-function truncate(text, max) {
-  if (!text || !max) {
-    return text;
-  }
-
-  if (text.length <= max) {
-    return text;
-  }
-
-  return text.slice(0, max) + "…";
-}
-
-Tab.prototype = {
-  create: function(aURL, aParams) {
-    if (this.browser)
-      return;
-
-    aParams = aParams || {};
-
-    this.browser = document.createElement("browser");
-    this.browser.setAttribute("type", "content-targetable");
-    this.browser.setAttribute("messagemanagergroup", "browsers");
-
-    if (Preferences.get("browser.tabs.remote.force-enable", false)) {
-      this.browser.setAttribute("remote", "true");
-    }
-
-    this.browser.permanentKey = {};
-
-    // Check if we have a "parent" window which we need to set as our opener
-    if ("opener" in aParams) {
-      this.browser.presetOpenerWindow(aParams.opener);
-    }
-
-    // Make sure the previously selected panel remains selected. The selected panel of a deck is
-    // not stable when panels are added.
-    let selectedPanel = BrowserApp.deck.selectedPanel;
-    BrowserApp.deck.insertBefore(this.browser, aParams.sibling || null);
-    BrowserApp.deck.selectedPanel = selectedPanel;
-
-    let attrs = {};
-    if (BrowserApp.manifestUrl) {
-      let appsService = Cc["@mozilla.org/AppsService;1"].getService(Ci.nsIAppsService);
-      let manifest = appsService.getAppByManifestURL(BrowserApp.manifestUrl);
-      if (manifest) {
-        let app = manifest.QueryInterface(Ci.mozIApplication);
-        this.browser.docShell.frameType = Ci.nsIDocShell.FRAME_TYPE_APP;
-        attrs['appId'] = app.localId;
-      }
-    }
-
-    // Must be called after appendChild so the docShell has been created.
-    this.setActive(false);
-
-    let isPrivate = ("isPrivate" in aParams) && aParams.isPrivate;
-    if (isPrivate) {
-      attrs['privateBrowsingId'] = 1;
-    }
-
-    this.browser.docShell.setOriginAttributes(attrs);
-
-    // Set the new docShell load flags based on network state.
-    if (Tabs.useCache) {
-      this.browser.docShell.defaultLoadFlags |= Ci.nsIRequest.LOAD_FROM_CACHE;
-    }
-
-    this.browser.stop();
-
-    // Only set tab uri if uri is valid
-    let uri = null;
-    let title = aParams.title || aURL;
-    try {
-      uri = Services.io.newURI(aURL, null, null).spec;
-    } catch (e) {}
-
-    // When the tab is stubbed from Java, there's a window between the stub
-    // creation and the tab creation in Gecko where the stub could be removed
-    // or the selected tab can change (which is easiest to hit during startup).
-    // To prevent these races, we need to differentiate between tab stubs from
-    // Java and new tabs from Gecko.
-    let stub = false;
-
-    if (!aParams.zombifying) {
-      if ("tabID" in aParams) {
-        this.id = aParams.tabID;
-        stub = true;
-      } else {
-        let jenv = JNI.GetForThread();
-        let jTabs = JNI.LoadClass(jenv, "org.mozilla.gecko.Tabs", {
-          static_methods: [
-            { name: "getNextTabId", sig: "()I" }
-          ],
-        });
-        this.id = jTabs.getNextTabId();
-        JNI.UnloadClasses(jenv);
-      }
-
-      this.desktopMode = ("desktopMode" in aParams) ? aParams.desktopMode : false;
-
-      let message = {
-        type: "Tab:Added",
-        tabID: this.id,
-        uri: truncate(uri, MAX_URI_LENGTH),
-        parentId: ("parentId" in aParams) ? aParams.parentId : -1,
-        tabIndex: ("tabIndex" in aParams) ? aParams.tabIndex : -1,
-        external: ("external" in aParams) ? aParams.external : false,
-        selected: ("selected" in aParams || aParams.cancelEditMode === true) ? aParams.selected : true,
-        cancelEditMode: aParams.cancelEditMode === true,
-        title: truncate(title, MAX_TITLE_LENGTH),
-        delayLoad: aParams.delayLoad || false,
-        desktopMode: this.desktopMode,
-        isPrivate: isPrivate,
-        stub: stub
-      };
-      Messaging.sendRequest(message);
-    }
-
-    let flags = Ci.nsIWebProgress.NOTIFY_STATE_ALL |
-                Ci.nsIWebProgress.NOTIFY_LOCATION |
-                Ci.nsIWebProgress.NOTIFY_SECURITY;
-    this.filter = Cc["@mozilla.org/appshell/component/browser-status-filter;1"].createInstance(Ci.nsIWebProgress);
-    this.filter.addProgressListener(this, flags)
-    this.browser.addProgressListener(this.filter, flags);
-    this.browser.sessionHistory.addSHistoryListener(this);
-
-    this.browser.addEventListener("DOMContentLoaded", this, true);
-    this.browser.addEventListener("DOMFormHasPassword", this, true);
-    this.browser.addEventListener("DOMInputPasswordAdded", this, true);
-    this.browser.addEventListener("DOMLinkAdded", this, true);
-    this.browser.addEventListener("DOMLinkChanged", this, true);
-    this.browser.addEventListener("DOMMetaAdded", this, false);
-    this.browser.addEventListener("DOMTitleChanged", this, true);
-    this.browser.addEventListener("DOMAudioPlaybackStarted", this, true);
-    this.browser.addEventListener("DOMAudioPlaybackStopped", this, true);
-    this.browser.addEventListener("DOMWindowClose", this, true);
-    this.browser.addEventListener("DOMWillOpenModalDialog", this, true);
-    this.browser.addEventListener("DOMAutoComplete", this, true);
-    this.browser.addEventListener("blur", this, true);
-    this.browser.addEventListener("pageshow", this, true);
-    this.browser.addEventListener("MozApplicationManifest", this, true);
-    this.browser.addEventListener("TabPreZombify", this, true);
-
-    // Note that the XBL binding is untrusted
-    this.browser.addEventListener("PluginBindingAttached", this, true, true);
-    this.browser.addEventListener("VideoBindingAttached", this, true, true);
-    this.browser.addEventListener("VideoBindingCast", this, true, true);
-
-    Services.obs.addObserver(this, "before-first-paint", false);
-    Services.obs.addObserver(this, "media-playback", false);
-    Services.obs.addObserver(this, "media-playback-resumed", false);
-
-    // Always intialise new tabs with basic session store data to avoid
-    // problems with functions that always expect it to be present
-    this.browser.__SS_data = {
-      entries: [{
-        url: aURL,
-        title: truncate(title, MAX_TITLE_LENGTH)
-      }],
-      index: 1,
-      desktopMode: this.desktopMode,
-      isPrivate: isPrivate
-    };
-
-    if (aParams.delayLoad) {
-      // If this is a zombie tab, mark the browser for delay loading, which will
-      // restore the tab when selected using the session data added above
-      this.browser.__SS_restore = true;
-    } else {
-      let flags = "flags" in aParams ? aParams.flags : Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
-      let postData = ("postData" in aParams && aParams.postData) ? aParams.postData.value : null;
-      let referrerURI = "referrerURI" in aParams ? aParams.referrerURI : null;
-      let charset = "charset" in aParams ? aParams.charset : null;
-
-      // The search term the user entered to load the current URL
-      this.userRequested = "userRequested" in aParams ? aParams.userRequested : "";
-      this.isSearch = "isSearch" in aParams ? aParams.isSearch : false;
-
-      try {
-        this.browser.loadURIWithFlags(aURL, flags, referrerURI, charset, postData);
-      } catch(e) {
-        let message = {
-          type: "Content:LoadError",
-          tabID: this.id
-        };
-        Messaging.sendRequest(message);
-        dump("Handled load error: " + e);
-      }
-    }
-  },
-
-  /**
-   * Reloads the tab with the desktop mode setting.
-   */
-  reloadWithMode: function (aDesktopMode) {
-    // notify desktopmode for PIDOMWindow
-    let win = this.browser.contentWindow;
-    let dwi = win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-    dwi.setDesktopModeViewport(aDesktopMode);
-
-    // Set desktop mode for tab and send change to Java
-    if (this.desktopMode != aDesktopMode) {
-      this.desktopMode = aDesktopMode;
-      Messaging.sendRequest({
-        type: "DesktopMode:Changed",
-        desktopMode: aDesktopMode,
-        tabID: this.id
-      });
-    }
-
-    // Only reload the page for http/https schemes
-    let currentURI = this.browser.currentURI;
-    if (!currentURI.schemeIs("http") && !currentURI.schemeIs("https"))
-      return;
-
-    let url = currentURI.spec;
-    // We need LOAD_FLAGS_BYPASS_CACHE here since we're changing the User-Agent
-    // string, and servers typically don't use the Vary: User-Agent header, so
-    // not doing this means that we'd get some of the previously cached content.
-    let flags = Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE |
-                Ci.nsIWebNavigation.LOAD_FLAGS_REPLACE_HISTORY;
-    if (this.originalURI && !this.originalURI.equals(currentURI)) {
-      // We were redirected; reload the original URL
-      url = this.originalURI.spec;
-    }
-
-    this.browser.docShell.loadURI(url, flags, null, null, null);
-  },
-
-  destroy: function() {
-    if (!this.browser)
-      return;
-
-    this.browser.removeProgressListener(this.filter);
-    this.filter.removeProgressListener(this);
-    this.filter = null;
-    this.browser.sessionHistory.removeSHistoryListener(this);
-
-    this.browser.removeEventListener("DOMContentLoaded", this, true);
-    this.browser.removeEventListener("DOMFormHasPassword", this, true);
-    this.browser.removeEventListener("DOMInputPasswordAdded", this, true);
-    this.browser.removeEventListener("DOMLinkAdded", this, true);
-    this.browser.removeEventListener("DOMLinkChanged", this, true);
-    this.browser.removeEventListener("DOMMetaAdded", this, false);
-    this.browser.removeEventListener("DOMTitleChanged", this, true);
-    this.browser.removeEventListener("DOMAudioPlaybackStarted", this, true);
-    this.browser.removeEventListener("DOMAudioPlaybackStopped", this, true);
-    this.browser.removeEventListener("DOMWindowClose", this, true);
-    this.browser.removeEventListener("DOMWillOpenModalDialog", this, true);
-    this.browser.removeEventListener("DOMAutoComplete", this, true);
-    this.browser.removeEventListener("blur", this, true);
-    this.browser.removeEventListener("pageshow", this, true);
-    this.browser.removeEventListener("MozApplicationManifest", this, true);
-    this.browser.removeEventListener("TabPreZombify", this, true);
-
-    this.browser.removeEventListener("PluginBindingAttached", this, true, true);
-    this.browser.removeEventListener("VideoBindingAttached", this, true, true);
-    this.browser.removeEventListener("VideoBindingCast", this, true, true);
-
-    Services.obs.removeObserver(this, "before-first-paint");
-    Services.obs.removeObserver(this, "media-playback", false);
-    Services.obs.removeObserver(this, "media-playback-resumed", false);
-
-    // Make sure the previously selected panel remains selected. The selected panel of a deck is
-    // not stable when panels are removed.
-    let selectedPanel = BrowserApp.deck.selectedPanel;
-    BrowserApp.deck.removeChild(this.browser);
-    BrowserApp.deck.selectedPanel = selectedPanel;
-
-    this.browser = null;
-  },
-
-  // This should be called to update the browser when the tab gets selected/unselected
-  setActive: function setActive(aActive) {
-    if (!this.browser || !this.browser.docShell)
-      return;
-
-    this.lastTouchedAt = Date.now();
-
-    if (aActive) {
-      this.browser.setAttribute("type", "content-primary");
-      this.browser.focus();
-      this.browser.docShellIsActive = true;
-      Reader.updatePageAction(this);
-      ExternalApps.updatePageAction(this.browser.currentURI, this.browser.contentDocument);
-    } else {
-      this.browser.setAttribute("type", "content-targetable");
-      this.browser.docShellIsActive = false;
-      this.browser.blur();
-    }
-  },
-
-  getActive: function getActive() {
-    return this.browser.docShellIsActive;
-  },
-
-  // These constants are used to prioritize high quality metadata over low quality data, so that
-  // we can collect data as we find meta tags, and replace low quality metadata with higher quality
-  // matches. For instance a msApplicationTile icon is a better tile image than an og:image tag.
-  METADATA_GOOD_MATCH: 10,
-  METADATA_NORMAL_MATCH: 1,
-
-  addMetadata: function(type, value, quality = 1) {
-    if (!this.metatags) {
-      this.metatags = {
-        url: this.browser.currentURI.specIgnoringRef
-      };
-    }
-
-    if (type == "touchIconList") {
-      if (!this.metatags['touchIconList']) {
-        this.metatags['touchIconList'] = {};
-      }
-      this.metatags.touchIconList[quality] = value;
-    } else if (!this.metatags[type] || this.metatags[type + "_quality"] < quality) {
-      this.metatags[type] = value;
-      this.metatags[type + "_quality"] = quality;
-    }
-  },
-
-  sanitizeRelString: function(linkRel) {
-    // Sanitize the rel string
-    let list = [];
-    if (linkRel) {
-      list = linkRel.toLowerCase().split(/\s+/);
-      let hash = {};
-      list.forEach(function(value) { hash[value] = true; });
-      list = [];
-      for (let rel in hash)
-      list.push("[" + rel + "]");
-    }
-    return list;
-  },
-
-  makeFaviconMessage: function(eventTarget) {
-    // We want to get the largest icon size possible for our UI.
-    let maxSize = 0;
-
-    // We use the sizes attribute if available
-    // see http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#rel-icon
-    if (eventTarget.hasAttribute("sizes")) {
-      let sizes = eventTarget.getAttribute("sizes").toLowerCase();
-
-      if (sizes == "any") {
-        // Since Java expects an integer, use -1 to represent icons with sizes="any"
-        maxSize = -1;
-      } else {
-        let tokens = sizes.split(" ");
-        tokens.forEach(function(token) {
-          // TODO: check for invalid tokens
-          let [w, h] = token.split("x");
-          maxSize = Math.max(maxSize, Math.max(w, h));
-        });
-      }
-    }
-    return {
-      type: "Link:Favicon",
-      tabID: this.id,
-      href: resolveGeckoURI(eventTarget.href),
-      size: maxSize,
-      mime: eventTarget.getAttribute("type") || ""
-    };
-  },
-
-  makeFeedMessage: function(eventTarget, targetType) {
-    try {
-      // urlSecurityCeck will throw if things are not OK
-      ContentAreaUtils.urlSecurityCheck(eventTarget.href,
-            eventTarget.ownerDocument.nodePrincipal,
-            Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
-
-      if (!this.browser.feeds)
-        this.browser.feeds = [];
-
-      this.browser.feeds.push({
-        href: eventTarget.href,
-        title: eventTarget.title,
-        type: targetType
-      });
-
-      return {
-        type: "Link:Feed",
-        tabID: this.id
-      };
-    } catch (e) {
-        return null;
-    }
-  },
-
-  sendOpenSearchMessage: function(eventTarget) {
-    let type = eventTarget.type && eventTarget.type.toLowerCase();
-    // Replace all starting or trailing spaces or spaces before "*;" globally w/ "".
-    type = type.replace(/^\s+|\s*(?:;.*)?$/g, "");
-
-    // Check that type matches opensearch.
-    let isOpenSearch = (type == "application/opensearchdescription+xml");
-    if (isOpenSearch && eventTarget.title && /^(?:https?|ftp):/i.test(eventTarget.href)) {
-      Services.search.init(() => {
-        let visibleEngines = Services.search.getVisibleEngines();
-        // NOTE: Engines are currently identified by name, but this can be changed
-        // when Engines are identified by URL (see bug 335102).
-        if (visibleEngines.some(function(e) {
-          return e.name == eventTarget.title;
-        })) {
-          // This engine is already present, do nothing.
-          return null;
-        }
-
-        if (this.browser.engines) {
-          // This engine has already been handled, do nothing.
-          if (this.browser.engines.some(function(e) {
-            return e.url == eventTarget.href;
-          })) {
-            return null;
-          }
-        } else {
-            this.browser.engines = [];
-        }
-
-        // Get favicon.
-        let iconURL = eventTarget.ownerDocument.documentURIObject.prePath + "/favicon.ico";
-
-        let newEngine = {
-          title: eventTarget.title,
-          url: eventTarget.href,
-          iconURL: iconURL
-        };
-
-        this.browser.engines.push(newEngine);
-
-        // Don't send a message to display engines if we've already handled an engine.
-        if (this.browser.engines.length > 1)
-          return null;
-
-        // Broadcast message that this tab contains search engines that should be visible.
-        Messaging.sendRequest({
-          type: "Link:OpenSearch",
-          tabID: this.id,
-          visible: true
-        });
-      });
-    }
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "DOMContentLoaded": {
-        let target = aEvent.originalTarget;
-
-        // ignore on frames and other documents
-        if (target != this.browser.contentDocument)
-          return;
-
-        // Sample the background color of the page and pass it along. (This is used to draw the
-        // checkerboard.) Right now we don't detect changes in the background color after this
-        // event fires; it's not clear that doing so is worth the effort.
-        var backgroundColor = null;
-        try {
-          let { contentDocument, contentWindow } = this.browser;
-          let computedStyle = contentWindow.getComputedStyle(contentDocument.body);
-          backgroundColor = computedStyle.backgroundColor;
-        } catch (e) {
-          // Ignore. Catching and ignoring exceptions here ensures that Talos succeeds.
-        }
-
-        let docURI = target.documentURI;
-        let errorType = "";
-        if (docURI.startsWith("about:certerror")) {
-          errorType = "certerror";
-        }
-        else if (docURI.startsWith("about:blocked")) {
-          errorType = "blocked";
-        }
-        else if (docURI.startsWith("about:neterror")) {
-          let error = docURI.search(/e\=/);
-          let duffUrl = docURI.search(/\&u\=/);
-          let errorExtra = decodeURIComponent(docURI.slice(error + 2, duffUrl));
-          // Here is a list of errorExtra types (et_*)
-          // http://mxr.mozilla.org/mozilla-central/source/mobile/android/chrome/content/netError.xhtml#287
-          UITelemetry.addEvent("neterror.1", "content", null, errorExtra);
-          errorType = "neterror";
-        }
-
-        // 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.
-        if (docURI.startsWith("about:neterror")) {
-          NetErrorHelper.attachToBrowser(this.browser);
-        }
-
-        Messaging.sendRequest({
-          type: "DOMContentLoaded",
-          tabID: this.id,
-          bgColor: backgroundColor,
-          errorType: errorType,
-          metadata: this.metatags,
-        });
-
-        // Reset isSearch so that the userRequested term will be erased on next page load
-        this.metatags = null;
-
-        if (docURI.startsWith("about:certerror") || docURI.startsWith("about:blocked")) {
-          this.browser.addEventListener("click", ErrorPageEventHandler, true);
-          let listener = function() {
-            this.browser.removeEventListener("click", ErrorPageEventHandler, true);
-            this.browser.removeEventListener("pagehide", listener, true);
-          }.bind(this);
-
-          this.browser.addEventListener("pagehide", listener, true);
-        }
-
-        if (AppConstants.NIGHTLY_BUILD || AppConstants.MOZ_ANDROID_ACTIVITY_STREAM) {
-          WebsiteMetadata.parseAsynchronously(this.browser.contentDocument);
-        }
-
-        break;
-      }
-
-      case "DOMFormHasPassword": {
-        LoginManagerContent.onDOMFormHasPassword(aEvent,
-                                                 this.browser.contentWindow);
-
-        // Send logins for this hostname to Java.
-        let hostname = aEvent.target.baseURIObject.prePath;
-        let foundLogins = Services.logins.findLogins({}, hostname, "", "");
-        if (foundLogins.length > 0) {
-          let displayHost = IdentityHandler.getEffectiveHost();
-          let title = { text: displayHost, resource: hostname };
-          let selectObj = { title: title, logins: foundLogins };
-          Messaging.sendRequest({ type: "Doorhanger:Logins", data: selectObj });
-        }
-        break;
-      }
-
-      case "DOMInputPasswordAdded": {
-        LoginManagerContent.onDOMInputPasswordAdded(aEvent,
-                                                    this.browser.contentWindow);
-      }
-
-      case "DOMMetaAdded":
-        let target = aEvent.originalTarget;
-        let browser = BrowserApp.getBrowserForDocument(target.ownerDocument);
-
-        switch (target.name) {
-          case "msapplication-TileImage":
-            this.addMetadata("tileImage", browser.currentURI.resolve(target.content), this.METADATA_GOOD_MATCH);
-            break;
-          case "msapplication-TileColor":
-            this.addMetadata("tileColor", target.content, this.METADATA_GOOD_MATCH);
-            break;
-        }
-
-        break;
-
-      case "DOMLinkAdded":
-      case "DOMLinkChanged": {
-        let jsonMessage = null;
-        let target = aEvent.originalTarget;
-        if (!target.href || target.disabled)
-          return;
-
-        // Ignore on frames and other documents
-        if (target.ownerDocument != this.browser.contentDocument)
-          return;
-
-        // Sanitize rel link
-        let list = this.sanitizeRelString(target.rel);
-        if (list.indexOf("[icon]") != -1) {
-          jsonMessage = this.makeFaviconMessage(target);
-        } else if (list.indexOf("[apple-touch-icon]") != -1 ||
-            list.indexOf("[apple-touch-icon-precomposed]") != -1) {
-          jsonMessage = this.makeFaviconMessage(target);
-          jsonMessage['type'] = 'Link:Touchicon';
-          this.addMetadata("touchIconList", jsonMessage.href, jsonMessage.size);
-        } else if (list.indexOf("[alternate]") != -1 && aEvent.type == "DOMLinkAdded") {
-          let type = target.type.toLowerCase().replace(/^\s+|\s*(?:;.*)?$/g, "");
-          let isFeed = (type == "application/rss+xml" || type == "application/atom+xml");
-
-          if (!isFeed)
-            return;
-
-          jsonMessage = this.makeFeedMessage(target, type);
-        } else if (list.indexOf("[search]") != -1 && aEvent.type == "DOMLinkAdded") {
-          this.sendOpenSearchMessage(target);
-        }
-        if (!jsonMessage)
-         return;
-
-        Messaging.sendRequest(jsonMessage);
-        break;
-      }
-
-      case "DOMTitleChanged": {
-        if (!aEvent.isTrusted)
-          return;
-
-        // ignore on frames and other documents
-        if (aEvent.originalTarget != this.browser.contentDocument)
-          return;
-
-        Messaging.sendRequest({
-          type: "DOMTitleChanged",
-          tabID: this.id,
-          title: truncate(aEvent.target.title, MAX_TITLE_LENGTH)
-        });
-        break;
-      }
-
-      case "TabPreZombify": {
-        if (!this.playingAudio) {
-          return;
-        }
-        // Fall through to the DOMAudioPlayback events, so the
-        // audio playback indicator gets reset upon zombification.
-      }
-      case "DOMAudioPlaybackStarted":
-      case "DOMAudioPlaybackStopped": {
-        if (!Services.prefs.getBoolPref("browser.tabs.showAudioPlayingIcon") ||
-            !aEvent.isTrusted) {
-          return;
-        }
-
-        let browser = aEvent.originalTarget;
-        if (browser != this.browser) {
-          return;
-        }
-
-        this.playingAudio = aEvent.type === "DOMAudioPlaybackStarted";
-
-        Messaging.sendRequest({
-          type: "Tab:AudioPlayingChange",
-          tabID: this.id,
-          isAudioPlaying: this.playingAudio
-        });
-        return;
-      }
-
-      case "DOMWindowClose": {
-        if (!aEvent.isTrusted)
-          return;
-
-        // Find the relevant tab, and close it from Java
-        if (this.browser.contentWindow == aEvent.target) {
-          aEvent.preventDefault();
-
-          Messaging.sendRequest({
-            type: "Tab:Close",
-            tabID: this.id
-          });
-        }
-        break;
-      }
-
-      case "DOMWillOpenModalDialog": {
-        if (!aEvent.isTrusted)
-          return;
-
-        // We're about to open a modal dialog, make sure the opening
-        // tab is brought to the front.
-        let tab = BrowserApp.getTabForWindow(aEvent.target.top);
-        BrowserApp.selectTab(tab);
-        break;
-      }
-
-      case "DOMAutoComplete":
-      case "blur": {
-        LoginManagerContent.onUsernameInput(aEvent);
-        break;
-      }
-
-      case "PluginBindingAttached": {
-        PluginHelper.handlePluginBindingAttached(this, aEvent);
-        break;
-      }
-
-      case "VideoBindingAttached": {
-        CastingApps.handleVideoBindingAttached(this, aEvent);
-        break;
-      }
-
-      case "VideoBindingCast": {
-        CastingApps.handleVideoBindingCast(this, aEvent);
-        break;
-      }
-
-      case "MozApplicationManifest": {
-        OfflineApps.offlineAppRequested(aEvent.originalTarget.defaultView);
-        break;
-      }
-
-      case "pageshow": {
-        LoginManagerContent.onPageShow(aEvent, this.browser.contentWindow);
-
-        // The rest of this only handles pageshow for the top-level document.
-        if (aEvent.originalTarget.defaultView != this.browser.contentWindow)
-          return;
-
-        let target = aEvent.originalTarget;
-        let docURI = target.documentURI;
-        if (!docURI.startsWith("about:neterror") && !this.isSearch) {
-          // If this wasn't an error page and the user isn't search, don't retain the typed entry
-          this.userRequested = "";
-        }
-
-        Messaging.sendRequest({
-          type: "Content:PageShow",
-          tabID: this.id,
-          userRequested: this.userRequested,
-          fromCache: Tabs.useCache
-        });
-
-        this.isSearch = false;
-
-        if (!aEvent.persisted && Services.prefs.getBoolPref("browser.ui.linkify.phone")) {
-          if (!this._linkifier)
-            this._linkifier = new Linkifier();
-          this._linkifier.linkifyNumbers(this.browser.contentWindow.document);
-        }
-
-        // Update page actions for helper apps.
-        let uri = this.browser.currentURI;
-        if (BrowserApp.selectedTab == this) {
-          if (ExternalApps.shouldCheckUri(uri)) {
-            ExternalApps.updatePageAction(uri, this.browser.contentDocument);
-          } else {
-            ExternalApps.clearPageAction();
-          }
-        }
-      }
-    }
-  },
-
-  onStateChange: function(aWebProgress, aRequest, aStateFlags, aStatus) {
-    let contentWin = aWebProgress.DOMWindow;
-    if (contentWin != contentWin.top)
-        return;
-
-    // Filter optimization: Only really send NETWORK state changes to Java listener
-    if (aStateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
-      if (AppConstants.NIGHTLY_BUILD && (aStateFlags & Ci.nsIWebProgressListener.STATE_START)) {
-        Profiler.AddMarker("Load start: " + aRequest.QueryInterface(Ci.nsIChannel).originalURI.spec);
-      } else if (AppConstants.NIGHTLY_BUILD && (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP) && !aWebProgress.isLoadingDocument) {
-        Profiler.AddMarker("Load stop: " + aRequest.QueryInterface(Ci.nsIChannel).originalURI.spec);
-      }
-
-      if ((aStateFlags & Ci.nsIWebProgressListener.STATE_STOP) && aWebProgress.isLoadingDocument) {
-        // We may receive a document stop event while a document is still loading
-        // (such as when doing URI fixup). Don't notify Java UI in these cases.
-        return;
-      }
-
-      // Clear page-specific opensearch engines and feeds for a new request.
-      if (aStateFlags & Ci.nsIWebProgressListener.STATE_START && aRequest && aWebProgress.isTopLevel) {
-        this.browser.engines = null;
-        this.browser.feeds = null;
-      }
-
-      // true if the page loaded successfully (i.e., no 404s or other errors)
-      let success = false;
-      let uri = "";
-      try {
-        // Remember original URI for UA changes on redirected pages
-        this.originalURI = aRequest.QueryInterface(Components.interfaces.nsIChannel).originalURI;
-
-        if (this.originalURI != null)
-          uri = this.originalURI.spec;
-      } catch (e) { }
-      try {
-        success = aRequest.QueryInterface(Components.interfaces.nsIHttpChannel).requestSucceeded;
-      } catch (e) {
-        // If the request does not handle the nsIHttpChannel interface, use nsIRequest's success
-        // status. Used for local files. See bug 948849.
-        success = aRequest.status == 0;
-      }
-
-      // Check to see if we restoring the content from a previous presentation (session)
-      // since there should be no real network activity
-      let restoring = (aStateFlags & Ci.nsIWebProgressListener.STATE_RESTORING) > 0;
-
-      let message = {
-        type: "Content:StateChange",
-        tabID: this.id,
-        uri: truncate(uri, MAX_URI_LENGTH),
-        state: aStateFlags,
-        restoring: restoring,
-        success: success
-      };
-      Messaging.sendRequest(message);
-    }
-  },
-
-  onLocationChange: function(aWebProgress, aRequest, aLocationURI, aFlags) {
-    let contentWin = aWebProgress.DOMWindow;
-
-    // Browser webapps may load content inside iframes that can not reach across the app/frame boundary
-    // i.e. even though the page is loaded in an iframe window.top != webapp
-    // Make cure this window is a top level tab before moving on.
-    if (BrowserApp.getBrowserForWindow(contentWin) == null)
-      return;
-
-    this._hostChanged = true;
-
-    let fixedURI = aLocationURI;
-    try {
-      fixedURI = URIFixup.createExposableURI(aLocationURI);
-    } catch (ex) { }
-
-    // In restricted profiles, we refuse to let you open various urls.
-    if (!ParentalControls.isAllowed(ParentalControls.BROWSE, fixedURI)) {
-      aRequest.cancel(Cr.NS_BINDING_ABORTED);
-
-      this.browser.docShell.displayLoadError(Cr.NS_ERROR_UNKNOWN_PROTOCOL, fixedURI, null);
-    }
-
-    let contentType = contentWin.document.contentType;
-
-    // If fixedURI matches browser.lastURI, we assume this isn't a real location
-    // change but rather a spurious addition like a wyciwyg URI prefix. See Bug 747883.
-    // Note that we have to ensure fixedURI is not the same as aLocationURI so we
-    // don't false-positive page reloads as spurious additions.
-    let sameDocument = (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT) != 0 ||
-                       ((this.browser.lastURI != null) && fixedURI.equals(this.browser.lastURI) && !fixedURI.equals(aLocationURI));
-    this.browser.lastURI = fixedURI;
-
-    // Let the reader logic know about same document changes because we won't get a DOMContentLoaded
-    // or pageshow event, but we'll still want to update the reader view button to account for this change.
-    // This mirrors the desktop logic in TabsProgressListener.
-    if (aFlags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT) {
-      this.browser.messageManager.sendAsyncMessage("Reader:PushState", {isArticle: this.browser.isArticle});
-    }
-
-    // Reset state of click-to-play plugin notifications.
-    clearTimeout(this.pluginDoorhangerTimeout);
-    this.pluginDoorhangerTimeout = null;
-    this.shouldShowPluginDoorhanger = true;
-    this.clickToPlayPluginsActivated = false;
-
-    let documentURI = contentWin.document.documentURIObject.spec;
-
-    // If reader mode, get the base domain for the original url.
-    let strippedURI = this._stripAboutReaderURL(documentURI);
-
-    // Borrowed from desktop Firefox: http://hg.mozilla.org/mozilla-central/annotate/72835344333f/browser/base/content/urlbarBindings.xml#l236
-    let matchedURL = strippedURI.match(/^((?:[a-z]+:\/\/)?(?:[^\/]+@)?)(.+?)(?::\d+)?(?:\/|$)/);
-    let baseDomain = "";
-    if (matchedURL) {
-      var domain = "";
-      [, , domain] = matchedURL;
-
-      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 we are navigating to a new location with a different host,
-    // clear any URL origin that might have been pinned to this tab.
-    let ss = Cc["@mozilla.org/browser/sessionstore;1"].getService(Ci.nsISessionStore);
-    let appOrigin = ss.getTabValue(this, "appOrigin");
-    if (appOrigin) {
-      let originHost = "";
-      try {
-        originHost = Services.io.newURI(appOrigin, null, null).host;
-      } catch (e if (e.result == Cr.NS_ERROR_FAILURE)) {
-        // NS_ERROR_FAILURE can be thrown by nsIURI.host if the URI scheme does not possess a host - in this case
-        // we just act as if we have an empty host.
-      }
-      if (originHost != aLocationURI.host) {
-        // Note: going 'back' will not make this tab pinned again
-        ss.deleteTabValue(this, "appOrigin");
-      }
-    }
-
-    // Update the page actions URI for helper apps.
-    if (BrowserApp.selectedTab == this) {
-      ExternalApps.updatePageActionUri(fixedURI);
-    }
-
-    let webNav = contentWin.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebNavigation);
-
-    let message = {
-      type: "Content:LocationChange",
-      tabID: this.id,
-      uri: truncate(fixedURI.spec, MAX_URI_LENGTH),
-      userRequested: this.userRequested || "",
-      baseDomain: baseDomain,
-      contentType: (contentType ? contentType : ""),
-      sameDocument: sameDocument,
-
-      historyIndex: webNav.sessionHistory.index,
-      historySize: webNav.sessionHistory.count,
-      canGoBack: webNav.canGoBack,
-      canGoForward: webNav.canGoForward,
-    };
-
-    Messaging.sendRequest(message);
-
-    if (!sameDocument) {
-      // XXX This code assumes that this is the earliest hook we have at which
-      // browser.contentDocument is changed to the new document we're loading
-      this.contentDocumentIsDisplayed = false;
-      this.hasTouchListener = false;
-      Services.obs.notifyObservers(this.browser, "Session:NotifyLocationChange", null);
-    }
-  },
-
-  _stripAboutReaderURL: function (url) {
-    return ReaderMode.getOriginalUrl(url) || url;
-  },
-
-  // 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)
-      return;
-
-    this._state = aState;
-    this._hostChanged = false;
-
-    let identity = IdentityHandler.checkIdentity(aState, this.browser);
-
-    let message = {
-      type: "Content:SecurityChange",
-      tabID: this.id,
-      identity: identity
-    };
-
-    Messaging.sendRequest(message);
-  },
-
-  onProgressChange: function(aWebProgress, aRequest, aCurSelfProgress, aMaxSelfProgress, aCurTotalProgress, aMaxTotalProgress) {
-    // Note: aWebProgess and aRequest will be NULL since we are filtering webprogress
-    // notifications using nsBrowserStatusFilter.
-  },
-
-  onStatusChange: function(aBrowser, aWebProgress, aRequest, aStatus, aMessage) {
-    // Note: aWebProgess and aRequest will be NULL since we are filtering webprogress
-    // notifications using nsBrowserStatusFilter.
-  },
-
-  _getGeckoZoom: function() {
-    let res = {};
-    let cwu = this.browser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-    cwu.getResolution(res);
-    let zoom = res.value * window.devicePixelRatio;
-    return zoom;
-  },
-
-  saveSessionZoom: function(aZoom) {
-    let cwu = this.browser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-    cwu.setResolutionAndScaleTo(aZoom / window.devicePixelRatio);
-  },
-
-  restoredSessionZoom: function() {
-    let cwu = this.browser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-
-    if (this._restoreZoom && cwu.isResolutionSet) {
-      return this._getGeckoZoom();
-    }
-    return null;
-  },
-
-  _updateZoomFromHistoryEvent: function(aHistoryEventName) {
-    // Restore zoom only when moving in session history, not for new page loads.
-    this._restoreZoom = aHistoryEventName !== "New";
-  },
-
-  OnHistoryNewEntry: function(aUri) {
-    this._updateZoomFromHistoryEvent("New");
-  },
-
-  OnHistoryGoBack: function(aUri) {
-    this._updateZoomFromHistoryEvent("Back");
-    return true;
-  },
-
-  OnHistoryGoForward: function(aUri) {
-    this._updateZoomFromHistoryEvent("Forward");
-    return true;
-  },
-
-  OnHistoryReload: function(aUri, aFlags) {
-    // we don't do anything with this, so don't propagate it
-    // for now anyway
-    return true;
-  },
-
-  OnHistoryGotoIndex: function(aIndex, aUri) {
-    this._updateZoomFromHistoryEvent("Goto");
-    return true;
-  },
-
-  OnHistoryPurge: function(aNumEntries) {
-    this._updateZoomFromHistoryEvent("Purge");
-    return true;
-  },
-
-  OnHistoryReplaceEntry: function(aIndex) {
-    // we don't do anything with this, so don't propogate it
-    // for now anyway.
-  },
-
-  ShouldNotifyMediaPlaybackChange: function(activeState) {
-    // If the media is active, we would check it's duration, because we don't
-    // want to show the media control interface for the short sound which
-    // duration is smaller than the threshold. The basic unit is second.
-    // Note : the streaming format's duration is infinite.
-    if (activeState === "inactive") {
-      return true;
-    }
-
-    const mediaDurationThreshold = 1.0;
-
-    let audioElements = this.browser.contentDocument.getElementsByTagName("audio");
-    for each (let audio in audioElements) {
-      if (!audio.paused && audio.duration < mediaDurationThreshold) {
-        return false;
-      }
-    }
-
-    let videoElements = this.browser.contentDocument.getElementsByTagName("video");
-    for each (let video in videoElements) {
-      if (!video.paused && video.duration < mediaDurationThreshold) {
-        return false;
-      }
-    }
-
-    return true;
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "before-first-paint":
-        // Is it on the top level?
-        let contentDocument = aSubject;
-        if (contentDocument == this.browser.contentDocument) {
-          if (BrowserApp.selectedTab == this) {
-            BrowserApp.contentDocumentChanged();
-          }
-          this.contentDocumentIsDisplayed = true;
-
-          if (contentDocument instanceof Ci.nsIImageDocument) {
-            contentDocument.shrinkToFit();
-          }
-        }
-        break;
-
-      case "media-playback":
-      case "media-playback-resumed":
-        if (!aSubject) {
-          return;
-        }
-
-        let winId = aSubject.QueryInterface(Ci.nsISupportsPRUint64).data;
-        if (this.browser.outerWindowID != winId) {
-          return;
-        }
-
-        if (!this.ShouldNotifyMediaPlaybackChange(aData)) {
-          return;
-        }
-
-        let status;
-        if (aTopic == "media-playback") {
-          status = (aData === "inactive") ? "end" : "start";
-        } else if (aTopic == "media-playback-resumed") {
-          status = "resume";
-        }
-
-        Messaging.sendRequest({
-          type: "Tab:MediaPlaybackChange",
-          tabID: this.id,
-          status: status
-        });
-        break;
-    }
-  },
-
-  // nsIBrowserTab
-  get window() {
-    if (!this.browser)
-      return null;
-    return this.browser.contentWindow;
-  },
-
-  get scale() {
-    return this._zoom;
-  },
-
-  QueryInterface: XPCOMUtils.generateQI([
-    Ci.nsIWebProgressListener,
-    Ci.nsISHistoryListener,
-    Ci.nsIObserver,
-    Ci.nsISupportsWeakReference,
-    Ci.nsIBrowserTab
-  ])
-};
-
-var BrowserEventHandler = {
-  init: function init() {
-    this._clickInZoomedView = false;
-    Services.obs.addObserver(this, "Gesture:SingleTap", false);
-    Services.obs.addObserver(this, "Gesture:ClickInZoomedView", false);
-
-    BrowserApp.deck.addEventListener("touchend", this, true);
-
-    BrowserApp.deck.addEventListener("DOMUpdatePageReport", PopupBlockerObserver.onUpdatePageReport, false);
-    BrowserApp.deck.addEventListener("MozMouseHittest", this, true);
-    BrowserApp.deck.addEventListener("OpenMediaWithExternalApp", this, true);
-
-    InitLater(() => BrowserApp.deck.addEventListener("click", InputWidgetHelper, true));
-    InitLater(() => BrowserApp.deck.addEventListener("click", SelectHelper, true));
-
-    // ReaderViews support backPress listeners.
-    Messaging.addListener(() => {
-      return Reader.onBackPress(BrowserApp.selectedTab.id);
-    }, "Browser:OnBackPressed");
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case 'touchend':
-        if (this._inCluster) {
-          aEvent.preventDefault();
-        }
-        break;
-      case 'MozMouseHittest':
-        this._handleRetargetedTouchStart(aEvent);
-        break;
-      case 'OpenMediaWithExternalApp': {
-        let mediaSrc = aEvent.target.currentSrc || aEvent.target.src;
-        let uuid = uuidgen.generateUUID().toString();
-        Services.androidBridge.handleGeckoMessage({
-          type: "Video:Play",
-          uri: mediaSrc,
-          uuid: uuid
-        });
-        break;
-      }
-    }
-  },
-
-  _handleRetargetedTouchStart: function(aEvent) {
-    // we should only get this called just after a new touchstart with a single
-    // touch point.
-    if (!BrowserApp.isBrowserContentDocumentDisplayed() || aEvent.defaultPrevented) {
-      return;
-    }
-
-    let target = aEvent.target;
-    if (!target) {
-      return;
-    }
-
-    this._inCluster = aEvent.hitCluster;
-    if (this._inCluster) {
-      return;  // No highlight for a cluster of links
-    }
-
-    let uri = this._getLinkURI(target);
-    if (uri) {
-      try {
-        Services.io.QueryInterface(Ci.nsISpeculativeConnect).speculativeConnect(uri, null);
-      } catch (e) {}
-    }
-    this._doTapHighlight(target);
-  },
-
-  _getLinkURI: function(aElement) {
-    if (aElement.nodeType == Ci.nsIDOMNode.ELEMENT_NODE &&
-        ((aElement instanceof Ci.nsIDOMHTMLAnchorElement && aElement.href) ||
-        (aElement instanceof Ci.nsIDOMHTMLAreaElement && aElement.href))) {
-      try {
-        return Services.io.newURI(aElement.href, null, null);
-      } catch (e) {}
-    }
-    return null;
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    // the remaining events are all dependent on the browser content document being the
-    // same as the browser displayed document. if they are not the same, we should ignore
-    // the event.
-    if (BrowserApp.isBrowserContentDocumentDisplayed()) {
-      this.handleUserEvent(aTopic, aData);
-    }
-  },
-
-  handleUserEvent: function(aTopic, aData) {
-    switch (aTopic) {
-
-      case "Gesture:ClickInZoomedView":
-        this._clickInZoomedView = true;
-        break;
-
-      case "Gesture:SingleTap": {
-        let focusedElement = BrowserApp.getFocusedInput(BrowserApp.selectedBrowser);
-        let data = JSON.parse(aData);
-        let {x, y} = data;
-
-        if (this._inCluster && this._clickInZoomedView != true) {
-          // If there is a focused element, the display of the zoomed view won't remove the focus.
-          // In this case, the form assistant linked to the focused element will never be closed.
-          // To avoid this situation, the focus is moved and the form assistant is closed.
-          if (focusedElement) {
-            try {
-              Services.focus.moveFocus(BrowserApp.selectedBrowser.contentWindow, null, Services.focus.MOVEFOCUS_ROOT, 0);
-            } catch(e) {
-              Cu.reportError(e);
-            }
-            Messaging.sendRequest({ type: "FormAssist:Hide" });
-          }
-          this._clusterClicked(x, y);
-        } else {
-          if (this._clickInZoomedView != true) {
-            this._closeZoomedView();
-          }
-        }
-        this._clickInZoomedView = false;
-        this._cancelTapHighlight();
-        break;
-      }
-
-      default:
-        dump('BrowserEventHandler.handleUserEvent: unexpected topic "' + aTopic + '"');
-        break;
-    }
-  },
-
-  _closeZoomedView: function() {
-    Messaging.sendRequest({
-      type: "Gesture:CloseZoomedView"
-    });
-  },
-
-  _clusterClicked: function(aX, aY) {
-    Messaging.sendRequest({
-      type: "Gesture:clusteredLinksClicked",
-      clickPosition: {
-        x: aX,
-        y: aY
-      }
-    });
-  },
-
-  _highlightElement: null,
-
-  _doTapHighlight: function _doTapHighlight(aElement) {
-    this._highlightElement = aElement;
-  },
-
-  _cancelTapHighlight: function _cancelTapHighlight() {
-    if (!this._highlightElement)
-      return;
-
-    this._highlightElement = null;
-  }
-};
-
-const ElementTouchHelper = {
-  getBoundingContentRect: function(aElement) {
-    if (!aElement)
-      return {x: 0, y: 0, w: 0, h: 0};
-
-    let document = aElement.ownerDocument;
-    while (document.defaultView.frameElement)
-      document = document.defaultView.frameElement.ownerDocument;
-
-    let cwu = document.defaultView.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-    let scrollX = {}, scrollY = {};
-    cwu.getScrollXY(false, scrollX, scrollY);
-
-    let r = aElement.getBoundingClientRect();
-
-    // step out of iframes and frames, offsetting scroll values
-    for (let frame = aElement.ownerDocument.defaultView; frame.frameElement && frame != content; frame = frame.parent) {
-      // adjust client coordinates' origin to be top left of iframe viewport
-      let rect = frame.frameElement.getBoundingClientRect();
-      let left = frame.getComputedStyle(frame.frameElement, "").borderLeftWidth;
-      let top = frame.getComputedStyle(frame.frameElement, "").borderTopWidth;
-      scrollX.value += rect.left + parseInt(left);
-      scrollY.value += rect.top + parseInt(top);
-    }
-
-    return {x: r.left + scrollX.value,
-            y: r.top + scrollY.value,
-            w: r.width,
-            h: r.height };
-  }
-};
-
-var ErrorPageEventHandler = {
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "click": {
-        // Don't trust synthetic events
-        if (!aEvent.isTrusted)
-          return;
-
-        let target = aEvent.originalTarget;
-        let errorDoc = target.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 (errorDoc.documentURI.startsWith("about:certerror?e=nssBadCert")) {
-          let perm = errorDoc.getElementById("permanentExceptionButton");
-          let temp = errorDoc.getElementById("temporaryExceptionButton");
-          if (target == temp || target == perm) {
-            // Handle setting an cert exception and reloading the page
-            try {
-              // Add a new SSL exception for this URL
-              let uri = Services.io.newURI(errorDoc.location.href, null, null);
-              let sslExceptions = new SSLExceptions();
-
-              if (target == perm)
-                sslExceptions.addPermanentException(uri, errorDoc.defaultView);
-              else
-                sslExceptions.addTemporaryException(uri, errorDoc.defaultView);
-            } catch (e) {
-              dump("Failed to set cert exception: " + e + "\n");
-            }
-            errorDoc.location.reload();
-          } else if (target == errorDoc.getElementById("getMeOutOfHereButton")) {
-            errorDoc.location = "about:home";
-          }
-        } else if (errorDoc.documentURI.startsWith("about:blocked")) {
-          // The event came from a button on a malware/phishing block page
-          // First check whether it's malware, phishing or unwanted, so that we
-          // can use the right strings/links
-          let isIframe = (errorDoc.defaultView.parent === errorDoc.defaultView);
-          let formatter = Cc["@mozilla.org/toolkit/URLFormatterService;1"].getService(Ci.nsIURLFormatter);
-
-          if (target == errorDoc.getElementById("getMeOutButton")) {
-            errorDoc.location = "about:home";
-          } else if (target == errorDoc.getElementById("reportButton")) {
-            // This is the "Why is this site blocked" button. We redirect
-            // to the generic page describing phishing/malware protection.
-            let url = Services.urlFormatter.formatURLPref("app.support.baseURL");
-            BrowserApp.selectedBrowser.loadURI(url + "phishing-malware");
-          } else if (target == errorDoc.getElementById("ignoreWarningButton") &&
-                     Services.prefs.getBoolPref("browser.safebrowsing.allowOverride")) {
-            // Allow users to override and continue through to the site,
-            let webNav = BrowserApp.selectedBrowser.docShell.QueryInterface(Ci.nsIWebNavigation);
-            let location = BrowserApp.selectedBrowser.contentWindow.location;
-            webNav.loadURI(location, Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CLASSIFIER, null, null, null);
-
-            // ....but add a notify bar as a reminder, so that they don't lose
-            // track after, e.g., tab switching.
-            NativeWindow.doorhanger.show(Strings.browser.GetStringFromName("safeBrowsingDoorhanger"), "safebrowsing-warning", [], BrowserApp.selectedTab.id);
-          }
-        }
-        break;
-      }
-    }
-  }
-};
-
-var FormAssistant = {
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIFormSubmitObserver]),
-
-  // Used to keep track of the element that corresponds to the current
-  // autocomplete suggestions
-  _currentInputElement: null,
-
-  // The value of the currently focused input
-  _currentInputValue: null,
-
-  // Whether we're in the middle of an autocomplete
-  _doingAutocomplete: false,
-
-  // Keep track of whether or not an invalid form has been submitted
-  _invalidSubmit: false,
-
-  init: function() {
-    Services.obs.addObserver(this, "FormAssist:AutoComplete", false);
-    Services.obs.addObserver(this, "FormAssist:Hidden", false);
-    Services.obs.addObserver(this, "FormAssist:Remove", false);
-    Services.obs.addObserver(this, "invalidformsubmit", false);
-    Services.obs.addObserver(this, "PanZoom:StateChange", false);
-
-    // We need to use a capturing listener for focus events
-    BrowserApp.deck.addEventListener("focus", this, true);
-    BrowserApp.deck.addEventListener("blur", this, true);
-    BrowserApp.deck.addEventListener("click", this, true);
-    BrowserApp.deck.addEventListener("input", this, false);
-    BrowserApp.deck.addEventListener("pageshow", this, false);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "PanZoom:StateChange":
-        // If the user is just touching the screen and we haven't entered a pan or zoom state yet do nothing
-        if (aData == "TOUCHING" || aData == "WAITING_LISTENERS")
-          break;
-        if (aData == "NOTHING") {
-          // only look for input elements, not contentEditable or multiline text areas
-          let focused = BrowserApp.getFocusedInput(BrowserApp.selectedBrowser, true);
-          if (!focused)
-            break;
-
-          if (this._showValidationMessage(focused))
-            break;
-          let checkResultsClick = hasResults => {
-            if (!hasResults) {
-              this._hideFormAssistPopup();
-            }
-          };
-          this._showAutoCompleteSuggestions(focused, checkResultsClick);
-        } else {
-          // temporarily hide the form assist popup while we're panning or zooming the page
-          this._hideFormAssistPopup();
-        }
-        break;
-      case "FormAssist:AutoComplete":
-        if (!this._currentInputElement)
-          break;
-
-        let editableElement = this._currentInputElement.QueryInterface(Ci.nsIDOMNSEditableElement);
-
-        this._doingAutocomplete = true;
-
-        // If we have an active composition string, commit it before sending
-        // the autocomplete event with the text that will replace it.
-        try {
-          let imeEditor = editableElement.editor.QueryInterface(Ci.nsIEditorIMESupport);
-          if (imeEditor.composing)
-            imeEditor.forceCompositionEnd();
-        } catch (e) {}
-
-        editableElement.setUserInput(aData);
-        this._currentInputValue = aData;
-
-        let event = this._currentInputElement.ownerDocument.createEvent("Events");
-        event.initEvent("DOMAutoComplete", true, true);
-        this._currentInputElement.dispatchEvent(event);
-
-        this._doingAutocomplete = false;
-
-        break;
-
-      case "FormAssist:Hidden":
-        this._currentInputElement = null;
-        break;
-
-      case "FormAssist:Remove":
-        if (!this._currentInputElement) {
-          break;
-        }
-
-        FormHistory.update({
-          op: "remove",
-          fieldname: this._currentInputElement.name,
-          value: aData
-        });
-        break;
-    }
-  },
-
-  notifyInvalidSubmit: function notifyInvalidSubmit(aFormElement, aInvalidElements) {
-    if (!aInvalidElements.length)
-      return;
-
-    // Ignore this notificaiton if the current tab doesn't contain the invalid element
-    let currentElement = aInvalidElements.queryElementAt(0, Ci.nsISupports);
-    if (BrowserApp.selectedBrowser.contentDocument !=
-        currentElement.ownerDocument.defaultView.top.document)
-      return;
-
-    this._invalidSubmit = true;
-
-    // Our focus listener will show the element's validation message
-    currentElement.focus();
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "focus": {
-        let currentElement = aEvent.target;
-
-        // Only show a validation message on focus.
-        this._showValidationMessage(currentElement);
-        break;
-      }
-
-      case "blur": {
-        this._currentInputValue = null;
-        break;
-      }
-
-      case "click": {
-        let currentElement = aEvent.target;
-
-        // Prioritize a form validation message over autocomplete suggestions
-        // when the element is first focused (a form validation message will
-        // only be available if an invalid form was submitted)
-        if (this._showValidationMessage(currentElement))
-          break;
-
-        let checkResultsClick = hasResults => {
-          if (!hasResults) {
-            this._hideFormAssistPopup();
-          }
-        };
-
-        this._showAutoCompleteSuggestions(currentElement, checkResultsClick);
-        break;
-      }
-
-      case "input": {
-        let currentElement = aEvent.target;
-
-        // If this element isn't focused, we're already in middle of an
-        // autocomplete, or its value hasn't changed, don't show the
-        // autocomplete popup.
-        if (currentElement !== BrowserApp.getFocusedInput(BrowserApp.selectedBrowser) ||
-            this._doingAutocomplete ||
-            currentElement.value === this._currentInputValue) {
-          break;
-        }
-
-        this._currentInputValue = currentElement.value;
-
-        // Since we can only show one popup at a time, prioritze autocomplete
-        // suggestions over a form validation message
-        let checkResultsInput = hasResults => {
-          if (hasResults)
-            return;
-
-          if (this._showValidationMessage(currentElement))
-            return;
-
-          // If we're not showing autocomplete suggestions, hide the form assist popup
-          this._hideFormAssistPopup();
-        };
-
-        this._showAutoCompleteSuggestions(currentElement, checkResultsInput);
-        break;
-      }
-
-      // Reset invalid submit state on each pageshow
-      case "pageshow": {
-        if (!this._invalidSubmit)
-          return;
-
-        let selectedBrowser = BrowserApp.selectedBrowser;
-        if (selectedBrowser) {
-          let selectedDocument = selectedBrowser.contentDocument;
-          let target = aEvent.originalTarget;
-          if (target == selectedDocument || target.ownerDocument == selectedDocument)
-            this._invalidSubmit = false;
-        }
-        break;
-      }
-    }
-  },
-
-  // We only want to show autocomplete suggestions for certain elements
-  _isAutoComplete: function _isAutoComplete(aElement) {
-    if (!(aElement instanceof HTMLInputElement) || aElement.readOnly || aElement.disabled ||
-        (aElement.getAttribute("type") == "password") ||
-        (aElement.hasAttribute("autocomplete") &&
-         aElement.getAttribute("autocomplete").toLowerCase() == "off"))
-      return false;
-
-    return true;
-  },
-
-  // Retrieves autocomplete suggestions for an element from the form autocomplete service.
-  // aCallback(array_of_suggestions) is called when results are available.
-  _getAutoCompleteSuggestions: function _getAutoCompleteSuggestions(aSearchString, aElement, aCallback) {
-    // Cache the form autocomplete service for future use
-    if (!this._formAutoCompleteService) {
-      this._formAutoCompleteService = Cc["@mozilla.org/satchel/form-autocomplete;1"]
-          .getService(Ci.nsIFormAutoComplete);
-    }
-
-    let resultsAvailable = function (results) {
-      let suggestions = [];
-      for (let i = 0; i < results.matchCount; i++) {
-        let value = results.getValueAt(i);
-
-        // Do not show the value if it is the current one in the input field
-        if (value == aSearchString)
-          continue;
-
-        // Supply a label and value, since they can differ for datalist suggestions
-        suggestions.push({ label: value, value: value });
-      }
-      aCallback(suggestions);
-    };
-
-    this._formAutoCompleteService.autoCompleteSearchAsync(aElement.name || aElement.id,
-                                                          aSearchString, aElement, null,
-                                                          null, resultsAvailable);
-  },
-
-  /**
-   * (Copied from mobile/xul/chrome/content/forms.js)
-   * This function is similar to getListSuggestions from
-   * components/satchel/src/nsInputListAutoComplete.js but sadly this one is
-   * used by the autocomplete.xml binding which is not in used in fennec
-   */
-  _getListSuggestions: function _getListSuggestions(aElement) {
-    if (!(aElement instanceof HTMLInputElement) || !aElement.list)
-      return [];
-
-    let suggestions = [];
-    let filter = !aElement.hasAttribute("mozNoFilter");
-    let lowerFieldValue = aElement.value.toLowerCase();
-
-    let options = aElement.list.options;
-    let length = options.length;
-    for (let i = 0; i < length; i++) {
-      let item = options.item(i);
-
-      let label = item.value;
-      if (item.label)
-        label = item.label;
-      else if (item.text)
-        label = item.text;
-
-      if (filter && !(label.toLowerCase().includes(lowerFieldValue)) )
-        continue;
-      suggestions.push({ label: label, value: item.value });
-    }
-
-    return suggestions;
-  },
-
-  // Retrieves autocomplete suggestions for an element from the form autocomplete service
-  // and sends the suggestions to the Java UI, along with element position data. As
-  // autocomplete queries are asynchronous, calls aCallback when done with a true
-  // argument if results were found and false if no results were found.
-  _showAutoCompleteSuggestions: function _showAutoCompleteSuggestions(aElement, aCallback) {
-    if (!this._isAutoComplete(aElement)) {
-      aCallback(false);
-      return;
-    }
-    if (this._isDisabledElement(aElement)) {
-      aCallback(false);
-      return;
-    }
-
-    let isEmpty = (aElement.value.length === 0);
-
-    let resultsAvailable = autoCompleteSuggestions => {
-      // On desktop, we show datalist suggestions below autocomplete suggestions,
-      // without duplicates removed.
-      let listSuggestions = this._getListSuggestions(aElement);
-      let suggestions = autoCompleteSuggestions.concat(listSuggestions);
-
-      // Return false if there are no suggestions to show
-      if (!suggestions.length) {
-        aCallback(false);
-        return;
-      }
-
-      Messaging.sendRequest({
-        type:  "FormAssist:AutoComplete",
-        suggestions: suggestions,
-        rect: ElementTouchHelper.getBoundingContentRect(aElement),
-        isEmpty: isEmpty,
-      });
-
-      // Keep track of input element so we can fill it in if the user
-      // selects an autocomplete suggestion
-      this._currentInputElement = aElement;
-      aCallback(true);
-    };
-
-    this._getAutoCompleteSuggestions(aElement.value, aElement, resultsAvailable);
-  },
-
-  // Only show a validation message if the user submitted an invalid form,
-  // there's a non-empty message string, and the element is the correct type
-  _isValidateable: function _isValidateable(aElement) {
-    if (!this._invalidSubmit ||
-        !aElement.validationMessage ||
-        !(aElement instanceof HTMLInputElement ||
-          aElement instanceof HTMLTextAreaElement ||
-          aElement instanceof HTMLSelectElement ||
-          aElement instanceof HTMLButtonElement))
-      return false;
-
-    return true;
-  },
-
-  // Sends a validation message and position data for an element to the Java UI.
-  // Returns true if there's a validation message to show, false otherwise.
-  _showValidationMessage: function _sendValidationMessage(aElement) {
-    if (!this._isValidateable(aElement))
-      return false;
-
-    Messaging.sendRequest({
-      type: "FormAssist:ValidationMessage",
-      validationMessage: aElement.validationMessage,
-      rect: ElementTouchHelper.getBoundingContentRect(aElement)
-    });
-
-    return true;
-  },
-
-  _hideFormAssistPopup: function _hideFormAssistPopup() {
-    Messaging.sendRequest({ type: "FormAssist:Hide" });
-  },
-
-  _isDisabledElement : function(aElement) {
-    let currentElement = aElement;
-    while (currentElement) {
-      if(currentElement.disabled)
-	return true;
-
-      currentElement = currentElement.parentElement;
-    }
-    return false;
-  }
-};
-
-var XPInstallObserver = {
-  init: function() {
-    Services.obs.addObserver(this, "addon-install-origin-blocked", false);
-    Services.obs.addObserver(this, "addon-install-disabled", false);
-    Services.obs.addObserver(this, "addon-install-blocked", false);
-    Services.obs.addObserver(this, "addon-install-started", false);
-    Services.obs.addObserver(this, "xpi-signature-changed", false);
-    Services.obs.addObserver(this, "browser-delayed-startup-finished", false);
-
-    AddonManager.addInstallListener(this);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    let installInfo, tab, host;
-    if (aSubject && aSubject instanceof Ci.amIWebInstallInfo) {
-      installInfo = aSubject;
-      tab = BrowserApp.getTabForBrowser(installInfo.browser);
-      if (installInfo.originatingURI) {
-        host = installInfo.originatingURI.host;
-      }
-    }
-
-    let strings = Strings.browser;
-    let brandShortName = Strings.brand.GetStringFromName("brandShortName");
-
-    switch (aTopic) {
-      case "addon-install-started":
-        Snackbars.show(strings.GetStringFromName("alertAddonsDownloading"), Snackbars.LENGTH_LONG);
-        break;
-      case "addon-install-disabled": {
-        if (!tab)
-          return;
-
-        let enabled = true;
-        try {
-          enabled = Services.prefs.getBoolPref("xpinstall.enabled");
-        } catch (e) {}
-
-        let buttons, message, callback;
-        if (!enabled) {
-          message = strings.GetStringFromName("xpinstallDisabledMessageLocked");
-          buttons = [strings.GetStringFromName("unsignedAddonsDisabled.dismiss")];
-          callback: (data) => {};
-        } else {
-          message = strings.formatStringFromName("xpinstallDisabledMessage2", [brandShortName, host], 2);
-          buttons = [
-              strings.GetStringFromName("xpinstallDisabledButton"),
-              strings.GetStringFromName("unsignedAddonsDisabled.dismiss")
-          ];
-          callback: (data) => {
-            if (data.button === 1) {
-              Services.prefs.setBoolPref("xpinstall.enabled", true)
-            }
-          };
-        }
-
-        new Prompt({
-          title: Strings.browser.GetStringFromName("addonError.titleError"),
-          message: message,
-          buttons: buttons
-        }).show(callback);
-        break;
-      }
-      case "addon-install-blocked": {
-        if (!tab)
-          return;
-
-        let message;
-        if (host) {
-          // We have a host which asked for the install.
-          message = strings.formatStringFromName("xpinstallPromptWarning2", [brandShortName, host], 2);
-        } else {
-          // Without a host we address the add-on as the initiator of the install.
-          let addon = null;
-          if (installInfo.installs.length > 0) {
-            addon = installInfo.installs[0].name;
-          }
-          if (addon) {
-            // We have an addon name, show the regular message.
-            message = strings.formatStringFromName("xpinstallPromptWarningLocal", [brandShortName, addon], 2);
-          } else {
-            // We don't have an addon name, show an alternative message.
-            message = strings.formatStringFromName("xpinstallPromptWarningDirect", [brandShortName], 1);
-          }
-        }
-
-        let buttons = [
-            strings.GetStringFromName("xpinstallPromptAllowButton"),
-            strings.GetStringFromName("unsignedAddonsDisabled.dismiss")
-        ];
-        new Prompt({
-          title: Strings.browser.GetStringFromName("addonError.titleBlocked"),
-          message: message,
-          buttons: buttons
-        }).show((data) => {
-          if (data.button === 0) {
-            // Kick off the install
-            installInfo.install();
-          }
-        });
-        break;
-      }
-      case "addon-install-origin-blocked": {
-        if (!tab)
-          return;
-
-        new Prompt({
-          title: Strings.browser.GetStringFromName("addonError.titleBlocked"),
-          message: strings.formatStringFromName("xpinstallPromptWarningDirect", [brandShortName], 1),
-          buttons: [strings.GetStringFromName("unsignedAddonsDisabled.dismiss")]
-        }).show((data) => {});
-        break;
-      }
-      case "xpi-signature-changed": {
-        if (JSON.parse(aData).disabled.length) {
-          this._notifyUnsignedAddonsDisabled();
-        }
-        break;
-      }
-      case "browser-delayed-startup-finished": {
-        let disabledAddons = AddonManager.getStartupChanges(AddonManager.STARTUP_CHANGE_DISABLED);
-        for (let id of disabledAddons) {
-          if (AddonManager.getAddonByID(id).signedState <= AddonManager.SIGNEDSTATE_MISSING) {
-            this._notifyUnsignedAddonsDisabled();
-            break;
-          }
-        }
-        break;
-      }
-    }
-  },
-
-  _notifyUnsignedAddonsDisabled: function() {
-    new Prompt({
-      window: window,
-      title: Strings.browser.GetStringFromName("unsignedAddonsDisabled.title"),
-      message: Strings.browser.GetStringFromName("unsignedAddonsDisabled.message"),
-      buttons: [
-        Strings.browser.GetStringFromName("unsignedAddonsDisabled.viewAddons"),
-        Strings.browser.GetStringFromName("unsignedAddonsDisabled.dismiss")
-      ]
-    }).show((data) => {
-      if (data.button === 0) {
-        // TODO: Open about:addons to show only unsigned add-ons?
-        BrowserApp.selectOrAddTab("about:addons", { parentId: BrowserApp.selectedTab.id });
-      }
-    });
-  },
-
-  onInstallEnded: function(aInstall, aAddon) {
-    // Don't create a notification for distribution add-ons.
-    if (Distribution.pendingAddonInstalls.has(aInstall)) {
-      Distribution.pendingAddonInstalls.delete(aInstall);
-      return;
-    }
-
-    let needsRestart = false;
-    if (aInstall.existingAddon && (aInstall.existingAddon.pendingOperations & AddonManager.PENDING_UPGRADE))
-      needsRestart = true;
-    else if (aAddon.pendingOperations & AddonManager.PENDING_INSTALL)
-      needsRestart = true;
-
-    if (needsRestart) {
-      this.showRestartPrompt();
-    } else {
-      // Display completion message for new installs or updates not done Automatically
-      if (!aInstall.existingAddon || !AddonManager.shouldAutoUpdate(aInstall.existingAddon)) {
-        let message = Strings.browser.GetStringFromName("alertAddonsInstalledNoRestart.message");
-        Snackbars.show(message, Snackbars.LENGTH_LONG, {
-          action: {
-            label: Strings.browser.GetStringFromName("alertAddonsInstalledNoRestart.action2"),
-            callback: () => {
-              UITelemetry.addEvent("show.1", "toast", null, "addons");
-              BrowserApp.selectOrAddTab("about:addons", { parentId: BrowserApp.selectedTab.id });
-            },
-          }
-        });
-      }
-    }
-  },
-
-  onInstallFailed: function(aInstall) {
-    this._showErrorMessage(aInstall);
-  },
-
-  onDownloadProgress: function(aInstall) {},
-
-  onDownloadFailed: function(aInstall) {
-    this._showErrorMessage(aInstall);
-  },
-
-  onDownloadCancelled: function(aInstall) {},
-
-  _showErrorMessage: function(aInstall) {
-    // Don't create a notification for distribution add-ons.
-    if (Distribution.pendingAddonInstalls.has(aInstall)) {
-      Cu.reportError("Error installing distribution add-on: " + aInstall.addon.id);
-      Distribution.pendingAddonInstalls.delete(aInstall);
-      return;
-    }
-
-    let host = (aInstall.originatingURI instanceof Ci.nsIStandardURL) && aInstall.originatingURI.host;
-    if (!host) {
-      host = (aInstall.sourceURI instanceof Ci.nsIStandardURL) && aInstall.sourceURI.host;
-    }
-
-    let error = (host || aInstall.error == 0) ? "addonError" : "addonLocalError";
-    if (aInstall.error < 0) {
-      error += aInstall.error;
-    } else if (aInstall.addon && aInstall.addon.blocklistState == Ci.nsIBlocklistService.STATE_BLOCKED) {
-      error += "Blocklisted";
-    } else {
-      error += "Incompatible";
-    }
-
-    let msg = Strings.browser.GetStringFromName(error);
-    // TODO: formatStringFromName
-    msg = msg.replace("#1", aInstall.name);
-    if (host) {
-      msg = msg.replace("#2", host);
-    }
-    msg = msg.replace("#3", Strings.brand.GetStringFromName("brandShortName"));
-    msg = msg.replace("#4", Services.appinfo.version);
-
-    if (aInstall.error == AddonManager.ERROR_SIGNEDSTATE_REQUIRED) {
-      new Prompt({
-        window: window,
-        title: Strings.browser.GetStringFromName("addonError.titleBlocked"),
-        message: msg,
-        buttons: [Strings.browser.GetStringFromName("addonError.learnMore")]
-      }).show((data) => {
-        if (data.button === 0) {
-          let url = Services.urlFormatter.formatURLPref("app.support.baseURL") + "unsigned-addons";
-          BrowserApp.addTab(url, { parentId: BrowserApp.selectedTab.id });
-        }
-      });
-    } else {
-      Services.prompt.alert(null, Strings.browser.GetStringFromName("addonError.titleError"), msg);
-    }
-  },
-
-  showRestartPrompt: function() {
-    let buttons = [{
-      label: Strings.browser.GetStringFromName("notificationRestart.button"),
-      callback: function() {
-        // Notify all windows that an application quit has been requested
-        let cancelQuit = Cc["@mozilla.org/supports-PRBool;1"].createInstance(Ci.nsISupportsPRBool);
-        Services.obs.notifyObservers(cancelQuit, "quit-application-requested", "restart");
-
-        // If nothing aborted, quit the app
-        if (cancelQuit.data == false) {
-          Services.obs.notifyObservers(null, "quit-application-proceeding", null);
-          let appStartup = Cc["@mozilla.org/toolkit/app-startup;1"].getService(Ci.nsIAppStartup);
-          appStartup.quit(Ci.nsIAppStartup.eRestart | Ci.nsIAppStartup.eAttemptQuit);
-        }
-      },
-      positive: true
-    }];
-
-    let message = Strings.browser.GetStringFromName("notificationRestart.normal");
-    NativeWindow.doorhanger.show(message, "addon-app-restart", buttons, BrowserApp.selectedTab.id, { persistence: -1 });
-  },
-
-  hideRestartPrompt: function() {
-    NativeWindow.doorhanger.hide("addon-app-restart", BrowserApp.selectedTab.id);
-  }
-};
-
-var ViewportHandler = {
-  init: function init() {
-    Services.obs.addObserver(this, "Window:Resize", false);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    if (aTopic == "Window:Resize" && aData) {
-      let scrollChange = JSON.parse(aData);
-      let windowUtils = window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
-      windowUtils.setNextPaintSyncId(scrollChange.id);
-    }
-  }
-};
-
-/**
- * Handler for blocked popups, triggered by DOMUpdatePageReport events in browser.xml
- */
-var PopupBlockerObserver = {
-  onUpdatePageReport: function onUpdatePageReport(aEvent) {
-    let browser = BrowserApp.selectedBrowser;
-    if (aEvent.originalTarget != browser)
-      return;
-
-    if (!browser.pageReport)
-      return;
-
-    let result = Services.perms.testExactPermission(BrowserApp.selectedBrowser.currentURI, "popup");
-    if (result == Ci.nsIPermissionManager.DENY_ACTION)
-      return;
-
-    // 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 (!browser.pageReport.reported) {
-      if (Services.prefs.getBoolPref("privacy.popups.showBrowserMessage")) {
-        let brandShortName = Strings.brand.GetStringFromName("brandShortName");
-        let popupCount = browser.pageReport.length;
-
-        let strings = Strings.browser;
-        let message = PluralForm.get(popupCount, strings.GetStringFromName("popup.message"))
-                                .replace("#1", brandShortName)
-                                .replace("#2", popupCount);
-
-        let buttons = [
-          {
-            label: strings.GetStringFromName("popup.dontShow"),
-            callback: function(aChecked) {
-              if (aChecked)
-                PopupBlockerObserver.allowPopupsForSite(false);
-            }
-          },
-          {
-            label: strings.GetStringFromName("popup.show"),
-            callback: function(aChecked) {
-              // Set permission before opening popup windows
-              if (aChecked)
-                PopupBlockerObserver.allowPopupsForSite(true);
-
-              PopupBlockerObserver.showPopupsForSite();
-            },
-            positive: true
-          }
-        ];
-
-        let options = { checkbox: Strings.browser.GetStringFromName("popup.dontAskAgain") };
-        NativeWindow.doorhanger.show(message, "popup-blocked", buttons, null, options);
-      }
-      // Record the fact that we've reported this blocked popup, so we don't
-      // show it again.
-      browser.pageReport.reported = true;
-    }
-  },
-
-  allowPopupsForSite: function allowPopupsForSite(aAllow) {
-    let currentURI = BrowserApp.selectedBrowser.currentURI;
-    Services.perms.add(currentURI, "popup", aAllow
-                       ?  Ci.nsIPermissionManager.ALLOW_ACTION
-                       :  Ci.nsIPermissionManager.DENY_ACTION);
-    dump("Allowing popups for: " + currentURI);
-  },
-
-  showPopupsForSite: function showPopupsForSite() {
-    let uri = BrowserApp.selectedBrowser.currentURI;
-    let pageReport = BrowserApp.selectedBrowser.pageReport;
-    if (pageReport) {
-      for (let i = 0; i < pageReport.length; ++i) {
-        let popupURIspec = pageReport[i].popupWindowURIspec;
-
-        // Sometimes the popup URI that we get back from the pageReport
-        // 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 == uri.spec)
-          continue;
-
-        let popupFeatures = pageReport[i].popupWindowFeatures;
-        let popupName = pageReport[i].popupWindowName;
-
-        let parent = BrowserApp.selectedTab;
-        let isPrivate = PrivateBrowsingUtils.isBrowserPrivate(parent.browser);
-        BrowserApp.addTab(popupURIspec, { parentId: parent.id, isPrivate: isPrivate });
-      }
-    }
-  }
-};
-
-
-var IndexedDB = {
-  _permissionsPrompt: "indexedDB-permissions-prompt",
-  _permissionsResponse: "indexedDB-permissions-response",
-
-  init: function IndexedDB_init() {
-    Services.obs.addObserver(this, this._permissionsPrompt, false);
-  },
-
-  observe: function IndexedDB_observe(subject, topic, data) {
-    if (topic != this._permissionsPrompt) {
-      throw new Error("Unexpected topic!");
-    }
-
-    let requestor = subject.QueryInterface(Ci.nsIInterfaceRequestor);
-
-    let browser = requestor.getInterface(Ci.nsIDOMNode);
-    let tab = BrowserApp.getTabForBrowser(browser);
-    if (!tab)
-      return;
-
-    let host = browser.currentURI.asciiHost;
-
-    let strings = Strings.browser;
-
-    let message, responseTopic;
-    if (topic == this._permissionsPrompt) {
-      message = strings.formatStringFromName("offlineApps.ask", [host], 1);
-      responseTopic = this._permissionsResponse;
-    }
-
-    const firstTimeoutDuration = 300000; // 5 minutes
-
-    let timeoutId;
-
-    let notificationID = responseTopic + host;
-    let observer = requestor.getInterface(Ci.nsIObserver);
-
-    // This will be set to the result of PopupNotifications.show() below, or to
-    // the result of PopupNotifications.getNotification() if this is a
-    // quotaCancel notification.
-    let notification;
-
-    function timeoutNotification() {
-      // Remove the notification.
-      NativeWindow.doorhanger.hide(notificationID, tab.id);
-
-      // 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);
-    }
-
-    let buttons = [
-    {
-      label: strings.GetStringFromName("offlineApps.dontAllow2"),
-      callback: function(aChecked) {
-        clearTimeout(timeoutId);
-        let action = aChecked ? Ci.nsIPermissionManager.DENY_ACTION : Ci.nsIPermissionManager.UNKNOWN_ACTION;
-        observer.observe(null, responseTopic, action);
-      }
-    },
-    {
-      label: strings.GetStringFromName("offlineApps.allow"),
-      callback: function() {
-        clearTimeout(timeoutId);
-        observer.observe(null, responseTopic, Ci.nsIPermissionManager.ALLOW_ACTION);
-      },
-      positive: true
-    }];
-
-    let options = { checkbox: Strings.browser.GetStringFromName("offlineApps.dontAskAgain") };
-    NativeWindow.doorhanger.show(message, notificationID, buttons, tab.id, 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);
-  }
-};
-
-var CharacterEncoding = {
-  _charsets: [],
-
-  init: function init() {
-    Services.obs.addObserver(this, "CharEncoding:Get", false);
-    Services.obs.addObserver(this, "CharEncoding:Set", false);
-    InitLater(() => this.sendState());
-  },
-
-  observe: function observe(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "CharEncoding:Get":
-        this.getEncoding();
-        break;
-      case "CharEncoding:Set":
-        this.setEncoding(aData);
-        break;
-    }
-  },
-
-  sendState: function sendState() {
-    let showCharEncoding = "false";
-    try {
-      showCharEncoding = Services.prefs.getComplexValue("browser.menu.showCharacterEncoding", Ci.nsIPrefLocalizedString).data;
-    } catch (e) { /* Optional */ }
-
-    Messaging.sendRequest({
-      type: "CharEncoding:State",
-      visible: showCharEncoding
-    });
-  },
-
-  getEncoding: function getEncoding() {
-    function infoToCharset(info) {
-      return { code: info.value, title: info.label };
-    }
-
-    if (!this._charsets.length) {
-      let data = CharsetMenu.getData();
-
-      // In the desktop UI, the pinned charsets are shown above the rest.
-      let pinnedCharsets = data.pinnedCharsets.map(infoToCharset);
-      let otherCharsets = data.otherCharsets.map(infoToCharset)
-
-      this._charsets = pinnedCharsets.concat(otherCharsets);
-    }
-
-    // Look for the index of the selected charset. Default to -1 if the
-    // doc charset isn't found in the list of available charsets.
-    let docCharset = BrowserApp.selectedBrowser.contentDocument.characterSet;
-    let selected = -1;
-    let charsetCount = this._charsets.length;
-
-    for (let i = 0; i < charsetCount; i++) {
-      if (this._charsets[i].code === docCharset) {
-        selected = i;
-        break;
-      }
-    }
-
-    Messaging.sendRequest({
-      type: "CharEncoding:Data",
-      charsets: this._charsets,
-      selected: selected
-    });
-  },
-
-  setEncoding: function setEncoding(aEncoding) {
-    let browser = BrowserApp.selectedBrowser;
-    browser.docShell.gatherCharsetMenuTelemetry();
-    browser.docShell.charset = aEncoding;
-    browser.reload(Ci.nsIWebNavigation.LOAD_FLAGS_CHARSET_CHANGE);
-  }
-};
-
-var IdentityHandler = {
-  // No trusted identity information. No site identity icon is shown.
-  IDENTITY_MODE_UNKNOWN: "unknown",
-
-  // Domain-Validation SSL CA-signed domain verification (DV).
-  IDENTITY_MODE_IDENTIFIED: "identified",
-
-  // Extended-Validation SSL CA-signed identity information (EV). A more rigorous validation process.
-  IDENTITY_MODE_VERIFIED: "verified",
-
-  // Part of the product's UI (built in about: pages)
-  IDENTITY_MODE_CHROMEUI: "chromeUI",
-
-  // The following mixed content modes are only used if "security.mixed_content.block_active_content"
-  // is enabled. Our Java frontend coalesces them into one indicator.
-
-  // No mixed content information. No mixed content icon is shown.
-  MIXED_MODE_UNKNOWN: "unknown",
-
-  // Blocked active mixed content.
-  MIXED_MODE_CONTENT_BLOCKED: "blocked",
-
-  // Loaded active mixed content.
-  MIXED_MODE_CONTENT_LOADED: "loaded",
-
-  // The following tracking content modes are only used if tracking protection
-  // is enabled. Our Java frontend coalesces them into one indicator.
-
-  // No tracking content information. No tracking content icon is shown.
-  TRACKING_MODE_UNKNOWN: "unknown",
-
-  // Blocked active tracking content. Shield icon is shown, with a popup option to load content.
-  TRACKING_MODE_CONTENT_BLOCKED: "tracking_content_blocked",
-
-  // Loaded active tracking content. Yellow triangle icon is shown.
-  TRACKING_MODE_CONTENT_LOADED: "tracking_content_loaded",
-
-  // Cache the most recent SSLStatus and Location seen in getIdentityStrings
-  _lastStatus : null,
-  _lastLocation : null,
-
-  /**
-   * Helper to parse out the important parts of _lastStatus (of the SSL cert in
-   * particular) for use in constructing identity UI strings
-  */
-  getIdentityData : function() {
-    let result = {};
-    let status = this._lastStatus.QueryInterface(Components.interfaces.nsISSLStatus);
-    let 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) {
-        let 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;
-  },
-
-  /**
-   * Determines the identity mode corresponding to the icon we show in the urlbar.
-   */
-  getIdentityMode: function getIdentityMode(aState, uri) {
-    if (aState & Ci.nsIWebProgressListener.STATE_IDENTITY_EV_TOPLEVEL) {
-      return this.IDENTITY_MODE_VERIFIED;
-    }
-
-    if (aState & Ci.nsIWebProgressListener.STATE_IS_SECURE) {
-      return this.IDENTITY_MODE_IDENTIFIED;
-    }
-
-    // We also allow "about:" by allowing the selector to be empty (i.e. '(|.....|...|...)'
-    let whitelist = /^about:($|about|accounts|addons|buildconfig|cache|config|crashes|devices|downloads|fennec|firefox|feedback|healthreport|home|license|logins|logo|memory|mozilla|networking|plugins|privatebrowsing|rights|serviceworkers|support|telemetry|webrtc)($|\?)/i;
-    if (uri.schemeIs("about") && whitelist.test(uri.spec)) {
-        return this.IDENTITY_MODE_CHROMEUI;
-    }
-
-    return this.IDENTITY_MODE_UNKNOWN;
-  },
-
-  getMixedDisplayMode: function getMixedDisplayMode(aState) {
-    if (aState & Ci.nsIWebProgressListener.STATE_LOADED_MIXED_DISPLAY_CONTENT) {
-        return this.MIXED_MODE_CONTENT_LOADED;
-    }
-
-    if (aState & Ci.nsIWebProgressListener.STATE_BLOCKED_MIXED_DISPLAY_CONTENT) {
-        return this.MIXED_MODE_CONTENT_BLOCKED;
-    }
-
-    return this.MIXED_MODE_UNKNOWN;
-  },
-
-  getMixedActiveMode: function getActiveDisplayMode(aState) {
-    // Only show an indicator for loaded mixed content if the pref to block it is enabled
-    if ((aState & Ci.nsIWebProgressListener.STATE_LOADED_MIXED_ACTIVE_CONTENT) &&
-         !Services.prefs.getBoolPref("security.mixed_content.block_active_content")) {
-      return this.MIXED_MODE_CONTENT_LOADED;
-    }
-
-    if (aState & Ci.nsIWebProgressListener.STATE_BLOCKED_MIXED_ACTIVE_CONTENT) {
-      return this.MIXED_MODE_CONTENT_BLOCKED;
-    }
-
-    return this.MIXED_MODE_UNKNOWN;
-  },
-
-  getTrackingMode: function getTrackingMode(aState, aBrowser) {
-    if (aState & Ci.nsIWebProgressListener.STATE_BLOCKED_TRACKING_CONTENT) {
-      this.shieldHistogramAdd(aBrowser, 2);
-      return this.TRACKING_MODE_CONTENT_BLOCKED;
-    }
-
-    // Only show an indicator for loaded tracking content if the pref to block it is enabled
-    let tpEnabled = Services.prefs.getBoolPref("privacy.trackingprotection.enabled") ||
-                    (Services.prefs.getBoolPref("privacy.trackingprotection.pbmode.enabled") &&
-                     PrivateBrowsingUtils.isBrowserPrivate(aBrowser));
-
-    if ((aState & Ci.nsIWebProgressListener.STATE_LOADED_TRACKING_CONTENT) && tpEnabled) {
-      this.shieldHistogramAdd(aBrowser, 1);
-      return this.TRACKING_MODE_CONTENT_LOADED;
-    }
-
-    this.shieldHistogramAdd(aBrowser, 0);
-    return this.TRACKING_MODE_UNKNOWN;
-  },
-
-  shieldHistogramAdd: function(browser, value) {
-    if (PrivateBrowsingUtils.isBrowserPrivate(browser)) {
-      return;
-    }
-    Telemetry.addData("TRACKING_PROTECTION_SHIELD", value);
-  },
-
-  /**
-   * Determine the identity of the page being displayed by examining its SSL cert
-   * (if available). Return the data needed to update the UI.
-   */
-  checkIdentity: function checkIdentity(aState, aBrowser) {
-    this._lastStatus = aBrowser.securityUI
-                               .QueryInterface(Components.interfaces.nsISSLStatusProvider)
-                               .SSLStatus;
-
-    // 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)
-    let locationObj = {};
-    try {
-      let location = aBrowser.contentWindow.location;
-      locationObj.host = location.host;
-      locationObj.hostname = location.hostname;
-      locationObj.port = location.port;
-      locationObj.origin = location.origin;
-    } 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.
-    }
-    this._lastLocation = locationObj;
-
-    let uri = aBrowser.currentURI;
-    try {
-      uri = Services.uriFixup.createExposableURI(uri);
-    } catch (e) {}
-
-    let identityMode = this.getIdentityMode(aState, uri);
-    let mixedDisplay = this.getMixedDisplayMode(aState);
-    let mixedActive = this.getMixedActiveMode(aState);
-    let trackingMode = this.getTrackingMode(aState, aBrowser);
-    let result = {
-      origin: locationObj.origin,
-      mode: {
-        identity: identityMode,
-        mixed_display: mixedDisplay,
-        mixed_active: mixedActive,
-        tracking: trackingMode
-      }
-    };
-
-    // Don't show identity data for pages with an unknown identity or if any
-    // mixed content is loaded (mixed display content is loaded by default).
-    // We also return for CHROMEUI pages since they don't have any certificate
-    // information to load either. result.secure specifically refers to connection
-    // security, which is irrelevant for about: pages, as they're loaded locally.
-    if (identityMode == this.IDENTITY_MODE_UNKNOWN ||
-        identityMode == this.IDENTITY_MODE_CHROMEUI ||
-        aState & Ci.nsIWebProgressListener.STATE_IS_BROKEN) {
-      result.secure = false;
-      return result;
-    }
-
-    result.secure = true;
-
-    result.host = this.getEffectiveHost();
-
-    let iData = this.getIdentityData();
-    result.verifier = Strings.browser.formatStringFromName("identity.identified.verifier", [iData.caOrg], 1);
-
-    // If the cert is identified, then we can populate the results with credentials
-    if (aState & Ci.nsIWebProgressListener.STATE_IDENTITY_EV_TOPLEVEL) {
-      result.owner = iData.subjectOrg;
-
-      // Build an appropriate supplemental block out of whatever location data we have
-      let supplemental = "";
-      if (iData.city) {
-        supplemental += iData.city + "\n";
-      }
-      if (iData.state && iData.country) {
-        supplemental += Strings.browser.formatStringFromName("identity.identified.state_and_country", [iData.state, iData.country], 2);
-        result.country = iData.country;
-      } else if (iData.state) { // State only
-        supplemental += iData.state;
-      } else if (iData.country) { // Country only
-        supplemental += iData.country;
-        result.country = iData.country;
-      }
-      result.supplemental = supplemental;
-
-      return result;
-    }
-
-    // Cache the override service the first time we need to check it
-    if (!this._overrideService)
-      this._overrideService = Cc["@mozilla.org/security/certoverride;1"].getService(Ci.nsICertOverrideService);
-
-    // 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, {}, {}))
-      result.verifier = Strings.browser.GetStringFromName("identity.identified.verified_by_you");
-
-    return result;
-  },
-
-  /**
-   * Attempt to provide proper IDN treatment for host names
-   */
-  getEffectiveHost: function getEffectiveHost() {
-    if (!this._IDNService)
-      this._IDNService = Cc["@mozilla.org/network/idn-service;1"]
-                         .getService(Ci.nsIIDNService);
-    try {
-      return this._IDNService.convertToDisplayIDN(this._uri.host, {});
-    } catch (e) {
-      // If something goes wrong (e.g. hostname is an IP address) just fail back
-      // to the full domain.
-      return this._lastLocation.hostname;
-    }
-  }
-};
-
-var SearchEngines = {
-  _contextMenuId: null,
-  PREF_SUGGEST_ENABLED: "browser.search.suggest.enabled",
-  PREF_SUGGEST_PROMPTED: "browser.search.suggest.prompted",
-
-  // Shared preference key used for search activity default engine.
-  PREF_SEARCH_ACTIVITY_ENGINE_KEY: "search.engines.defaultname",
-
-  init: function init() {
-    Services.obs.addObserver(this, "SearchEngines:Add", false);
-    Services.obs.addObserver(this, "SearchEngines:GetVisible", false);
-    Services.obs.addObserver(this, "SearchEngines:Remove", false);
-    Services.obs.addObserver(this, "SearchEngines:RestoreDefaults", false);
-    Services.obs.addObserver(this, "SearchEngines:SetDefault", false);
-    Services.obs.addObserver(this, "browser-search-engine-modified", false);
-  },
-
-  // Fetch list of search engines. all ? All engines : Visible engines only.
-  _handleSearchEnginesGetVisible: function _handleSearchEnginesGetVisible(rv, all) {
-    if (!Components.isSuccessCode(rv)) {
-      Cu.reportError("Could not initialize search service, bailing out.");
-      return;
-    }
-
-    let engineData = Services.search.getVisibleEngines({});
-
-    // Our Java UI assumes that the default engine is the first item in the array,
-    // so we need to make sure that's the case.
-    if (engineData[0] !== Services.search.defaultEngine) {
-      engineData = engineData.filter(engine => engine !== Services.search.defaultEngine);
-      engineData.unshift(Services.search.defaultEngine);
-    }
-
-    let searchEngines = engineData.map(function (engine) {
-      return {
-        name: engine.name,
-        identifier: engine.identifier,
-        iconURI: (engine.iconURI ? engine.iconURI.spec : null),
-        hidden: engine.hidden
-      };
-    });
-
-    let suggestTemplate = null;
-    let suggestEngine = null;
-
-    // Check to see if the default engine supports search suggestions. We only need to check
-    // the default engine because we only show suggestions for the default engine in the UI.
-    let engine = Services.search.defaultEngine;
-    if (engine.supportsResponseType("application/x-suggestions+json")) {
-      suggestEngine = engine.name;
-      suggestTemplate = engine.getSubmission("__searchTerms__", "application/x-suggestions+json").uri.spec;
-    }
-
-    // By convention, the currently configured default engine is at position zero in searchEngines.
-    Messaging.sendRequest({
-      type: "SearchEngines:Data",
-      searchEngines: searchEngines,
-      suggest: {
-        engine: suggestEngine,
-        template: suggestTemplate,
-        enabled: Services.prefs.getBoolPref(this.PREF_SUGGEST_ENABLED),
-        prompted: Services.prefs.getBoolPref(this.PREF_SUGGEST_PROMPTED)
-      }
-    });
-
-    // Send a speculative connection to the default engine.
-    Services.search.defaultEngine.speculativeConnect({window: window});
-  },
-
-  // Helper method to extract the engine name from a JSON. Simplifies the observe function.
-  _extractEngineFromJSON: function _extractEngineFromJSON(aData) {
-    let data = JSON.parse(aData);
-    return Services.search.getEngineByName(data.engine);
-  },
-
-  observe: function observe(aSubject, aTopic, aData) {
-    let engine;
-    switch(aTopic) {
-      case "SearchEngines:Add":
-        this.displaySearchEnginesList(aData);
-        break;
-      case "SearchEngines:GetVisible":
-        Services.search.init(this._handleSearchEnginesGetVisible.bind(this));
-        break;
-      case "SearchEngines:Remove":
-        // Make sure the engine isn't hidden before removing it, to make sure it's
-        // visible if the user later re-adds it (works around bug 341833)
-        engine = this._extractEngineFromJSON(aData);
-        engine.hidden = false;
-        Services.search.removeEngine(engine);
-        break;
-      case "SearchEngines:RestoreDefaults":
-        // Un-hides all default engines.
-        Services.search.restoreDefaultEngines();
-        break;
-      case "SearchEngines:SetDefault":
-        engine = this._extractEngineFromJSON(aData);
-        // Move the new default search engine to the top of the search engine list.
-        Services.search.moveEngine(engine, 0);
-        Services.search.defaultEngine = engine;
-        break;
-      case "browser-search-engine-modified":
-        if (aData == "engine-default") {
-          this._setSearchActivityDefaultPref(aSubject.QueryInterface(Ci.nsISearchEngine));
-        }
-        break;
-      default:
-        dump("Unexpected message type observed: " + aTopic);
-        break;
-    }
-  },
-
-  migrateSearchActivityDefaultPref: function migrateSearchActivityDefaultPref() {
-    Services.search.init(() => this._setSearchActivityDefaultPref(Services.search.defaultEngine));
-  },
-
-  // Updates the search activity pref when the default engine changes.
-  _setSearchActivityDefaultPref: function _setSearchActivityDefaultPref(engine) {
-    SharedPreferences.forApp().setCharPref(this.PREF_SEARCH_ACTIVITY_ENGINE_KEY, engine.name);
-  },
-
-  // Display context menu listing names of the search engines available to be added.
-  displaySearchEnginesList: function displaySearchEnginesList(aData) {
-    let data = JSON.parse(aData);
-    let tab = BrowserApp.getTabForId(data.tabId);
-
-    if (!tab)
-      return;
-
-    let browser = tab.browser;
-    let engines = browser.engines;
-
-    let p = new Prompt({
-      window: browser.contentWindow
-    }).setSingleChoiceItems(engines.map(function(e) {
-      return { label: e.title };
-    })).show((function(data) {
-      if (data.button == -1)
-        return;
-
-      this.addOpenSearchEngine(engines[data.button]);
-      engines.splice(data.button, 1);
-
-      if (engines.length < 1) {
-        // Broadcast message that there are no more add-able search engines.
-        let newEngineMessage = {
-          type: "Link:OpenSearch",
-          tabID: tab.id,
-          visible: false
-        };
-
-        Messaging.sendRequest(newEngineMessage);
-      }
-    }).bind(this));
-  },
-
-  addOpenSearchEngine: function addOpenSearchEngine(engine) {
-    Services.search.addEngine(engine.url, Ci.nsISearchEngine.DATA_XML, engine.iconURL, false, {
-      onSuccess: function() {
-        // Display a toast confirming addition of new search engine.
-        Snackbars.show(Strings.browser.formatStringFromName("alertSearchEngineAddedToast", [engine.title], 1), Snackbars.LENGTH_LONG);
-      },
-
-      onError: function(aCode) {
-        let errorMessage;
-        if (aCode == 2) {
-          // Engine is a duplicate.
-          errorMessage = "alertSearchEngineDuplicateToast";
-
-        } else {
-          // Unknown failure. Display general error message.
-          errorMessage = "alertSearchEngineErrorToast";
-        }
-
-        Snackbars.show(Strings.browser.formatStringFromName(errorMessage, [engine.title], 1), Snackbars.LENGTH_LONG);
-      }
-    });
-  },
-
-  /**
-   * Build and return an array of sorted form data / Query Parameters
-   * for an element in a submission form.
-   *
-   * @param element
-   *        A valid submission element of a form.
-   */
-  _getSortedFormData: function(element) {
-    let formData = [];
-
-    for (let formElement of element.form.elements) {
-      if (!formElement.type) {
-        continue;
-      }
-
-      // Make this text field a generic search parameter.
-      if (element == formElement) {
-        formData.push({ name: formElement.name, value: "{searchTerms}" });
-        continue;
-      }
-
-      // Add other form elements as parameters.
-      switch (formElement.type.toLowerCase()) {
-        case "checkbox":
-        case "radio":
-          if (!formElement.checked) {
-            break;
-          }
-        case "text":
-        case "hidden":
-        case "textarea":
-          formData.push({ name: escape(formElement.name), value: escape(formElement.value) });
-          break;
-
-        case "select-one": {
-          for (let option of formElement.options) {
-            if (option.selected) {
-              formData.push({ name: escape(formElement.name), value: escape(formElement.value) });
-              break;
-            }
-          }
-        }
-      }
-    };
-
-    // Return valid, pre-sorted queryParams.
-    return formData.filter(a => a.name && a.value).sort((a, b) => {
-      // nsIBrowserSearchService.hasEngineWithURL() ensures sort, but this helps.
-      if (a.name > b.name) {
-        return 1;
-      }
-      if (b.name > a.name) {
-        return -1;
-      }
-
-      if (a.value > b.value) {
-        return 1;
-      }
-      if (b.value > a.value) {
-        return -1;
-      }
-
-      return 0;
-    });
-  },
-
-  /**
-   * Check if any search engines already handle an EngineURL of type
-   * URLTYPE_SEARCH_HTML, matching this request-method, formURL, and queryParams.
-   */
-  visibleEngineExists: function(element) {
-    let formData = this._getSortedFormData(element);
-
-    let form = element.form;
-    let method = form.method.toUpperCase();
-
-    let charset = element.ownerDocument.characterSet;
-    let docURI = Services.io.newURI(element.ownerDocument.URL, charset, null);
-    let formURL = Services.io.newURI(form.getAttribute("action"), charset, docURI).spec;
-
-    return Services.search.hasEngineWithURL(method, formURL, formData);
-  },
-
-  /**
-   * Adds a new search engine to the BrowserSearchService, based on its provided element. Prompts for an engine
-   * name, and appends a simple version-number in case of collision with an existing name.
-   *
-   * @return callback to handle success value. Currently used for ActionBarHandler.js and UI updates.
-   */
-  addEngine: function addEngine(aElement, resultCallback) {
-    let form = aElement.form;
-    let charset = aElement.ownerDocument.characterSet;
-    let docURI = Services.io.newURI(aElement.ownerDocument.URL, charset, null);
-    let formURL = Services.io.newURI(form.getAttribute("action"), charset, docURI).spec;
-    let method = form.method.toUpperCase();
-    let formData = this._getSortedFormData(aElement);
-
-    // prompt user for name of search engine
-    let promptTitle = Strings.browser.GetStringFromName("contextmenu.addSearchEngine3");
-    let title = { value: (aElement.ownerDocument.title || docURI.host) };
-    if (!Services.prompt.prompt(null, promptTitle, null, title, null, {})) {
-      if (resultCallback) {
-        resultCallback(false);
-      };
-      return;
-    }
-
-    // fetch the favicon for this page
-    let dbFile = FileUtils.getFile("ProfD", ["browser.db"]);
-    let mDBConn = Services.storage.openDatabase(dbFile);
-    let stmts = [];
-    stmts[0] = mDBConn.createStatement("SELECT favicon FROM history_with_favicons WHERE url = ?");
-    stmts[0].bindByIndex(0, docURI.spec);
-    let favicon = null;
-
-    Services.search.init(function addEngine_cb(rv) {
-      if (!Components.isSuccessCode(rv)) {
-        Cu.reportError("Could not initialize search service, bailing out.");
-        if (resultCallback) {
-          resultCallback(false);
-        };
-        return;
-      }
-
-      mDBConn.executeAsync(stmts, stmts.length, {
-        handleResult: function (results) {
-          let bytes = results.getNextRow().getResultByName("favicon");
-          if (bytes && bytes.length) {
-            favicon = "data:image/x-icon;base64," + btoa(String.fromCharCode.apply(null, bytes));
-          }
-        },
-        handleCompletion: function (reason) {
-          // if there's already an engine with this name, add a number to
-          // make the name unique (e.g., "Google" becomes "Google 2")
-          let name = title.value;
-          for (let i = 2; Services.search.getEngineByName(name); i++)
-            name = title.value + " " + i;
-
-          Services.search.addEngineWithDetails(name, favicon, null, null, method, formURL);
-          Snackbars.show(Strings.browser.formatStringFromName("alertSearchEngineAddedToast", [name], 1), Snackbars.LENGTH_LONG);
-
-          let engine = Services.search.getEngineByName(name);
-          engine.wrappedJSObject._queryCharset = charset;
-          formData.forEach(param => { engine.addParam(param.name, param.value, null); });
-
-          if (resultCallback) {
-            return resultCallback(true);
-          };
-        }
-      });
-    });
-  }
-};
-
-var ActivityObserver = {
-  init: function ao_init() {
-    Services.obs.addObserver(this, "application-background", false);
-    Services.obs.addObserver(this, "application-foreground", false);
-  },
-
-  observe: function ao_observe(aSubject, aTopic, aData) {
-    let isForeground = false;
-    let tab = BrowserApp.selectedTab;
-
-    UITelemetry.addEvent("show.1", "system", null, aTopic);
-
-    switch (aTopic) {
-      case "application-background" :
-        let doc = (tab ? tab.browser.contentDocument : null);
-        if (doc && doc.fullscreenElement) {
-          doc.exitFullscreen();
-        }
-        isForeground = false;
-        break;
-      case "application-foreground" :
-        isForeground = true;
-        break;
-    }
-
-    if (tab && tab.getActive() != isForeground) {
-      tab.setActive(isForeground);
-    }
-  }
-};
-
-var Telemetry = {
-  addData: function addData(aHistogramId, aValue) {
-    let histogram = Services.telemetry.getHistogramById(aHistogramId);
-    histogram.add(aValue);
-  },
-};
-
-var Experiments = {
-  // Enable malware download protection (bug 936041)
-  MALWARE_DOWNLOAD_PROTECTION: "malware-download-protection",
-
-  // Try to load pages from disk cache when network is offline (bug 935190)
-  OFFLINE_CACHE: "offline-cache",
-
-  init() {
-    Messaging.sendRequestForResult({
-      type: "Experiments:GetActive"
-    }).then(experiments => {
-      let names = JSON.parse(experiments);
-      for (let name of names) {
-        switch (name) {
-          case this.MALWARE_DOWNLOAD_PROTECTION: {
-            // Apply experiment preferences on the default branch. This allows
-            // us to avoid migrating user prefs when experiments are enabled/disabled,
-            // and it also allows users to override these prefs in about:config.
-            let defaults = Services.prefs.getDefaultBranch(null);
-            defaults.setBoolPref("browser.safebrowsing.downloads.enabled", true);
-            defaults.setBoolPref("browser.safebrowsing.downloads.remote.enabled", true);
-            continue;
-          }
-
-          case this.OFFLINE_CACHE: {
-            let defaults = Services.prefs.getDefaultBranch(null);
-            defaults.setBoolPref("browser.tabs.useCache", true);
-            continue;
-          }
-        }
-      }
-    });
-  },
-
-  setOverride(name, isEnabled) {
-    Messaging.sendRequest({
-      type: "Experiments:SetOverride",
-      name: name,
-      isEnabled: isEnabled
-    });
-  },
-
-  clearOverride(name) {
-    Messaging.sendRequest({
-      type: "Experiments:ClearOverride",
-      name: name
-    });
-  }
-};
-
-var ExternalApps = {
-  _contextMenuId: null,
-
-  // extend _getLink to pickup html5 media links.
-  _getMediaLink: function(aElement) {
-    let uri = NativeWindow.contextmenus._getLink(aElement);
-    if (uri == null && aElement.nodeType == Ci.nsIDOMNode.ELEMENT_NODE && (aElement instanceof Ci.nsIDOMHTMLMediaElement)) {
-      try {
-        let mediaSrc = aElement.currentSrc || aElement.src;
-        uri = ContentAreaUtils.makeURI(mediaSrc, null, null);
-      } catch (e) {}
-    }
-    return uri;
-  },
-
-  init: function helper_init() {
-    this._contextMenuId = NativeWindow.contextmenus.add(function(aElement) {
-      let uri = null;
-      var node = aElement;
-      while (node && !uri) {
-        uri = ExternalApps._getMediaLink(node);
-        node = node.parentNode;
-      }
-      let apps = [];
-      if (uri)
-        apps = HelperApps.getAppsForUri(uri);
-
-      return apps.length == 1 ? Strings.browser.formatStringFromName("helperapps.openWithApp2", [apps[0].name], 1) :
-                                Strings.browser.GetStringFromName("helperapps.openWithList2");
-    }, this.filter, this.openExternal);
-  },
-
-  filter: {
-    matches: function(aElement) {
-      let uri = ExternalApps._getMediaLink(aElement);
-      let apps = [];
-      if (uri) {
-        apps = HelperApps.getAppsForUri(uri);
-      }
-      return apps.length > 0;
-    }
-  },
-
-  openExternal: function(aElement) {
-    if (aElement.pause) {
-      aElement.pause();
-    }
-    let uri = ExternalApps._getMediaLink(aElement);
-    HelperApps.launchUri(uri);
-  },
-
-  shouldCheckUri: function(uri) {
-    if (!(uri.schemeIs("http") || uri.schemeIs("https") || uri.schemeIs("file"))) {
-      return false;
-    }
-
-    return true;
-  },
-
-  updatePageAction: function updatePageAction(uri, contentDocument) {
-    HelperApps.getAppsForUri(uri, { filterHttp: true }, (apps) => {
-      this.clearPageAction();
-      if (apps.length > 0)
-        this._setUriForPageAction(uri, apps, contentDocument);
-    });
-  },
-
-  updatePageActionUri: function updatePageActionUri(uri) {
-    this._pageActionUri = uri;
-  },
-
-  _getMediaContentElement(contentDocument) {
-    if (!contentDocument.contentType.startsWith("video/") &&
-        !contentDocument.contentType.startsWith("audio/")) {
-      return null;
-    }
-
-    let element = contentDocument.activeElement;
-
-    if (element instanceof HTMLBodyElement) {
-      element = element.firstChild;
-    }
-
-    if (element instanceof HTMLMediaElement) {
-      return element;
-    }
-
-    return null;
-  },
-
-  _setUriForPageAction: function setUriForPageAction(uri, apps, contentDocument) {
-    this.updatePageActionUri(uri);
-
-    // If the pageaction is already added, simply update the URI to be launched when 'onclick' is triggered.
-    if (this._pageActionId != undefined)
-      return;
-
-    let mediaElement = this._getMediaContentElement(contentDocument);
-
-    this._pageActionId = PageActions.add({
-      title: Strings.browser.GetStringFromName("openInApp.pageAction"),
-      icon: "drawable://icon_openinapp",
-
-      clickCallback: () => {
-        UITelemetry.addEvent("launch.1", "pageaction", null, "helper");
-
-        let wasPlaying = mediaElement && !mediaElement.paused && !mediaElement.ended;
-        if (wasPlaying) {
-          mediaElement.pause();
-        }
-
-        if (apps.length > 1) {
-          // Use the HelperApps prompt here to filter out any Http handlers
-          HelperApps.prompt(apps, {
-            title: Strings.browser.GetStringFromName("openInApp.pageAction"),
-            buttons: [
-              Strings.browser.GetStringFromName("openInApp.ok"),
-              Strings.browser.GetStringFromName("openInApp.cancel")
-            ]
-          }, (result) => {
-            if (result.button != 0) {
-              if (wasPlaying) {
-                mediaElement.play();
-              }
-
-              return;
-            }
-            apps[result.icongrid0].launch(this._pageActionUri);
-          });
-        } else {
-          apps[0].launch(this._pageActionUri);
-        }
-      }
-    });
-  },
-
-  clearPageAction: function clearPageAction() {
-    if(!this._pageActionId)
-      return;
-
-    PageActions.remove(this._pageActionId);
-    delete this._pageActionId;
-  },
-};
-
-var Distribution = {
-  // File used to store campaign data
-  _file: null,
-
-  _preferencesJSON: null,
-
-  init: function dc_init() {
-    Services.obs.addObserver(this, "Distribution:Changed", false);
-    Services.obs.addObserver(this, "Distribution:Set", false);
-    Services.obs.addObserver(this, "prefservice:after-app-defaults", false);
-    Services.obs.addObserver(this, "Campaign:Set", false);
-
-    // Look for file outside the APK:
-    // /data/data/org.mozilla.xxx/distribution.json
-    this._file = Services.dirsvc.get("XCurProcD", Ci.nsIFile);
-    this._file.append("distribution.json");
-    this.readJSON(this._file, this.update);
-  },
-
-  observe: function dc_observe(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "Distribution:Changed":
-        // Re-init the search service.
-        try {
-          Services.search._asyncReInit();
-        } catch (e) {
-          console.log("Unable to reinit search service.");
-        }
-        // Fall through.
-
-      case "Distribution:Set":
-        if (aData) {
-          try {
-            this._preferencesJSON = JSON.parse(aData);
-          } catch (e) {
-            console.log("Invalid distribution JSON.");
-          }
-        }
-        // Reload the default prefs so we can observe "prefservice:after-app-defaults"
-        Services.prefs.QueryInterface(Ci.nsIObserver).observe(null, "reload-default-prefs", null);
-        this.installDistroAddons();
-        break;
-
-      case "prefservice:after-app-defaults":
-        this.getPrefs();
-        break;
-
-      case "Campaign:Set": {
-        // Update the prefs for this session
-        try {
-          this.update(JSON.parse(aData));
-        } catch (ex) {
-          Cu.reportError("Distribution: Could not parse JSON: " + ex);
-          return;
-        }
-
-        // Asynchronously copy the data to the file.
-        let array = new TextEncoder().encode(aData);
-        OS.File.writeAtomic(this._file.path, array, { tmpPath: this._file.path + ".tmp" });
-        break;
-      }
-    }
-  },
-
-  update: function dc_update(aData) {
-    // Force the distribution preferences on the default branch
-    let defaults = Services.prefs.getDefaultBranch(null);
-    defaults.setCharPref("distribution.id", aData.id);
-    defaults.setCharPref("distribution.version", aData.version);
-  },
-
-  getPrefs: function dc_getPrefs() {
-    if (this._preferencesJSON) {
-        this.applyPrefs(this._preferencesJSON);
-        this._preferencesJSON = null;
-        return;
-    }
-
-    // Get the distribution directory, and bail if it doesn't exist.
-    let file = FileUtils.getDir("XREAppDist", [], false);
-    if (!file.exists())
-      return;
-
-    file.append("preferences.json");
-    this.readJSON(file, this.applyPrefs);
-  },
-
-  applyPrefs: function dc_applyPrefs(aData) {
-    // Check for required Global preferences
-    let global = aData["Global"];
-    if (!(global && global["id"] && global["version"] && global["about"])) {
-      Cu.reportError("Distribution: missing or incomplete Global preferences");
-      return;
-    }
-
-    // Force the distribution preferences on the default branch
-    let defaults = Services.prefs.getDefaultBranch(null);
-    defaults.setCharPref("distribution.id", global["id"]);
-    defaults.setCharPref("distribution.version", global["version"]);
-
-    let locale = BrowserApp.getUALocalePref();
-    let aboutString = Cc["@mozilla.org/supports-string;1"].createInstance(Ci.nsISupportsString);
-    aboutString.data = global["about." + locale] || global["about"];
-    defaults.setComplexValue("distribution.about", Ci.nsISupportsString, aboutString);
-
-    let prefs = aData["Preferences"];
-    for (let key in prefs) {
-      try {
-        let value = prefs[key];
-        switch (typeof value) {
-          case "boolean":
-            defaults.setBoolPref(key, value);
-            break;
-          case "number":
-            defaults.setIntPref(key, value);
-            break;
-          case "string":
-          case "undefined":
-            defaults.setCharPref(key, value);
-            break;
-        }
-      } catch (e) { /* ignore bad prefs and move on */ }
-    }
-
-    // Apply a lightweight theme if necessary
-    if (prefs && prefs["lightweightThemes.selectedThemeID"]) {
-      Services.obs.notifyObservers(null, "lightweight-theme-apply", "");
-    }
-
-    let localizedString = Cc["@mozilla.org/pref-localizedstring;1"].createInstance(Ci.nsIPrefLocalizedString);
-    let localizeablePrefs = aData["LocalizablePreferences"];
-    for (let key in localizeablePrefs) {
-      try {
-        let value = localizeablePrefs[key];
-        value = value.replace(/%LOCALE%/g, locale);
-        localizedString.data = "data:text/plain," + key + "=" + value;
-        defaults.setComplexValue(key, Ci.nsIPrefLocalizedString, localizedString);
-      } catch (e) { /* ignore bad prefs and move on */ }
-    }
-
-    let localizeablePrefsOverrides = aData["LocalizablePreferences." + locale];
-    for (let key in localizeablePrefsOverrides) {
-      try {
-        let value = localizeablePrefsOverrides[key];
-        localizedString.data = "data:text/plain," + key + "=" + value;
-        defaults.setComplexValue(key, Ci.nsIPrefLocalizedString, localizedString);
-      } catch (e) { /* ignore bad prefs and move on */ }
-    }
-
-    Messaging.sendRequest({ type: "Distribution:Set:OK" });
-  },
-
-  // aFile is an nsIFile
-  // aCallback takes the parsed JSON object as a parameter
-  readJSON: function dc_readJSON(aFile, aCallback) {
-    Task.spawn(function() {
-      let bytes = yield OS.File.read(aFile.path);
-      let raw = new TextDecoder().decode(bytes) || "";
-
-      try {
-        aCallback(JSON.parse(raw));
-      } catch (e) {
-        Cu.reportError("Distribution: Could not parse JSON: " + e);
-      }
-    }).then(null, function onError(reason) {
-      if (!(reason instanceof OS.File.Error && reason.becauseNoSuchFile)) {
-        Cu.reportError("Distribution: Could not read from " + aFile.leafName + " file");
-      }
-    });
-  },
-
-  // Track pending installs so we can avoid showing notifications for them.
-  pendingAddonInstalls: new Set(),
-
-  installDistroAddons: Task.async(function* () {
-    const PREF_ADDONS_INSTALLED = "distribution.addonsInstalled";
-    try {
-      let installed = Services.prefs.getBoolPref(PREF_ADDONS_INSTALLED);
-      if (installed) {
-        return;
-      }
-    } catch (e) {
-      Services.prefs.setBoolPref(PREF_ADDONS_INSTALLED, true);
-    }
-
-    let distroPath;
-    try {
-      distroPath = FileUtils.getDir("XREAppDist", ["extensions"]).path;
-
-      let info = yield OS.File.stat(distroPath);
-      if (!info.isDir) {
-        return;
-      }
-    } catch (e) {
-      return;
-    }
-
-    let it = new OS.File.DirectoryIterator(distroPath);
-    try {
-      yield it.forEach(entry => {
-        // Only support extensions that are zipped in .xpi files.
-        if (entry.isDir || !entry.name.endsWith(".xpi")) {
-          dump("Ignoring distribution add-on that isn't an XPI: " + entry.path);
-          return;
-        }
-
-        new Promise((resolve, reject) => {
-          AddonManager.getInstallForFile(new FileUtils.File(entry.path), resolve);
-        }).then(install => {
-          let id = entry.name.substring(0, entry.name.length - 4);
-          if (install.addon.id !== id) {
-            Cu.reportError("File entry " + entry.path + " contains an add-on with an incorrect ID");
-            return;
-          }
-          this.pendingAddonInstalls.add(install);
-          install.install();
-        }).catch(e => {
-          Cu.reportError("Error installing distribution add-on: " + entry.path + ": " + e);
-        });
-      });
-    } finally {
-      it.close();
-    }
-  })
-};
-
-var Tabs = {
-  _enableTabExpiration: false,
-  _useCache: false,
-  _domains: new Set(),
-
-  init: function() {
-    // On low-memory platforms, always allow tab expiration. On high-mem
-    // platforms, allow it to be turned on once we hit a low-mem situation.
-    if (BrowserApp.isOnLowMemoryPlatform) {
-      this._enableTabExpiration = true;
-    } else {
-      Services.obs.addObserver(this, "memory-pressure", false);
-    }
-
-    // Watch for opportunities to pre-connect to high probability targets.
-    Services.obs.addObserver(this, "Session:Prefetch", false);
-
-    // Track the network connection so we can efficiently use the cache
-    // for possible offline rendering.
-    Services.obs.addObserver(this, "network:link-status-changed", false);
-    let network = Cc["@mozilla.org/network/network-link-service;1"].getService(Ci.nsINetworkLinkService);
-    this.useCache = !network.isLinkUp;
-
-    BrowserApp.deck.addEventListener("pageshow", this, false);
-    BrowserApp.deck.addEventListener("TabOpen", this, false);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "memory-pressure":
-        if (aData != "heap-minimize") {
-          // We received a low-memory related notification. This will enable
-          // expirations.
-          this._enableTabExpiration = true;
-          Services.obs.removeObserver(this, "memory-pressure");
-        } else {
-          // Use "heap-minimize" as a trigger to expire the most stale tab.
-          this.expireLruTab();
-        }
-        break;
-      case "Session:Prefetch":
-        if (aData) {
-          try {
-            let uri = Services.io.newURI(aData, null, null);
-            if (uri && !this._domains.has(uri.host)) {
-              Services.io.QueryInterface(Ci.nsISpeculativeConnect).speculativeConnect(uri, null);
-              this._domains.add(uri.host);
-            }
-          } catch (e) {}
-        }
-        break;
-      case "network:link-status-changed":
-        if (["down", "unknown", "up"].indexOf(aData) == -1) {
-          return;
-        }
-        this.useCache = (aData === "down");
-        break;
-    }
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "pageshow":
-        // Clear the domain cache whenever a page is loaded into any browser.
-        this._domains.clear();
-
-        break;
-      case "TabOpen":
-        // Use opening a new tab as a trigger to expire the most stale tab.
-        this.expireLruTab();
-        break;
-    }
-  },
-
-  // Manage the most-recently-used list of tabs. Each tab has a timestamp
-  // associated with it that indicates when it was last touched.
-  expireLruTab: function() {
-    if (!this._enableTabExpiration) {
-      return false;
-    }
-    let expireTimeMs = Services.prefs.getIntPref("browser.tabs.expireTime") * 1000;
-    if (expireTimeMs < 0) {
-      // This behaviour is disabled.
-      return false;
-    }
-    let tabs = BrowserApp.tabs;
-    let selected = BrowserApp.selectedTab;
-    let lruTab = null;
-    // Find the least recently used non-zombie tab.
-    for (let i = 0; i < tabs.length; i++) {
-      if (tabs[i] == selected ||
-          tabs[i].browser.__SS_restore ||
-          tabs[i].playingAudio) {
-        // This tab is selected, is already a zombie, or is currently playing
-        // audio, skip it.
-        continue;
-      }
-      if (lruTab == null || tabs[i].lastTouchedAt < lruTab.lastTouchedAt) {
-        lruTab = tabs[i];
-      }
-    }
-    // If the tab was last touched more than browser.tabs.expireTime seconds ago,
-    // zombify it.
-    if (lruTab) {
-      if (Date.now() - lruTab.lastTouchedAt > expireTimeMs) {
-        MemoryObserver.zombify(lruTab);
-        return true;
-      }
-    }
-    return false;
-  },
-
-  get useCache() {
-    if (!Services.prefs.getBoolPref("browser.tabs.useCache")) {
-      return false;
-    }
-    return this._useCache;
-  },
-
-  set useCache(aUseCache) {
-    if (!Services.prefs.getBoolPref("browser.tabs.useCache")) {
-      return;
-    }
-
-    if (this._useCache == aUseCache) {
-      return;
-    }
-
-    BrowserApp.tabs.forEach(function(tab) {
-      if (tab.browser && tab.browser.docShell) {
-        if (aUseCache) {
-          tab.browser.docShell.defaultLoadFlags |= Ci.nsIRequest.LOAD_FROM_CACHE;
-        } else {
-          tab.browser.docShell.defaultLoadFlags &= ~Ci.nsIRequest.LOAD_FROM_CACHE;
-        }
-      }
-    });
-    this._useCache = aUseCache;
-  },
-
-  // For debugging
-  dump: function(aPrefix) {
-    let tabs = BrowserApp.tabs;
-    for (let i = 0; i < tabs.length; i++) {
-      dump(aPrefix + " | " + "Tab [" + tabs[i].browser.contentWindow.location.href + "]: lastTouchedAt:" + tabs[i].lastTouchedAt + ", zombie:" + tabs[i].browser.__SS_restore);
-    }
-  },
-};
-
-function ContextMenuItem(args) {
-  this.id = uuidgen.generateUUID().toString();
-  this.args = args;
-}
-
-ContextMenuItem.prototype = {
-  get order() {
-    return this.args.order || 0;
-  },
-
-  matches: function(elt, x, y) {
-    return this.args.selector.matches(elt, x, y);
-  },
-
-  callback: function(elt) {
-    this.args.callback(elt);
-  },
-
-  addVal: function(name, elt, defaultValue) {
-    if (!(name in this.args))
-      return defaultValue;
-
-    if (typeof this.args[name] == "function")
-      return this.args[name](elt);
-
-    return this.args[name];
-  },
-
-  getValue: function(elt) {
-    return {
-      id: this.id,
-      label: this.addVal("label", elt),
-      showAsActions: this.addVal("showAsActions", elt),
-      icon: this.addVal("icon", elt),
-      isGroup: this.addVal("isGroup", elt, false),
-      inGroup: this.addVal("inGroup", elt, false),
-      disabled: this.addVal("disabled", elt, false),
-      selected: this.addVal("selected", elt, false),
-      isParent: this.addVal("isParent", elt, false),
-    };
-  }
-}
-
-function HTMLContextMenuItem(elt, target) {
-  ContextMenuItem.call(this, { });
-
-  this.menuElementRef = Cu.getWeakReference(elt);
-  this.targetElementRef = Cu.getWeakReference(target);
-}
-
-HTMLContextMenuItem.prototype = Object.create(ContextMenuItem.prototype, {
-  order: {
-    value: NativeWindow.contextmenus.DEFAULT_HTML5_ORDER
-  },
-
-  matches: {
-    value: function(target) {
-      let t = this.targetElementRef.get();
-      return t === target;
-    },
-  },
-
-  callback: {
-    value: function(target) {
-      let elt = this.menuElementRef.get();
-      if (!elt) {
-        return;
-      }
-
-      // If this is a menu item, show a new context menu with the submenu in it
-      if (elt instanceof Ci.nsIDOMHTMLMenuElement) {
-        try {
-          NativeWindow.contextmenus.menus = {};
-
-          let elt = this.menuElementRef.get();
-          let target = this.targetElementRef.get();
-          if (!elt) {
-            return;
-          }
-
-          var items = NativeWindow.contextmenus._getHTMLContextMenuItemsForMenu(elt, target);
-          // This menu will always only have one context, but we still make sure its the "right" one.
-          var context = NativeWindow.contextmenus._getContextType(target);
-          if (items.length > 0) {
-            NativeWindow.contextmenus._addMenuItems(items, context);
-          }
-
-        } catch(ex) {
-          Cu.reportError(ex);
-        }
-      } else {
-        // otherwise just click the menu item
-        elt.click();
-      }
-    },
-  },
-
-  getValue: {
-    value: function(target) {
-      let elt = this.menuElementRef.get();
-      if (!elt) {
-        return null;
-      }
-
-      if (elt.hasAttribute("hidden")) {
-        return null;
-      }
-
-      return {
-        id: this.id,
-        icon: elt.icon,
-        label: elt.label,
-        disabled: elt.disabled,
-        menu: elt instanceof Ci.nsIDOMHTMLMenuElement
-      };
-    }
-  },
-});
-
diff --git a/mobile/android/chrome/content/browser.xul b/mobile/android/chrome/content/browser.xul
deleted file mode 100644
index 8072a7a1c..000000000
--- a/mobile/android/chrome/content/browser.xul
+++ /dev/null
@@ -1,17 +0,0 @@
-<?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://browser/content/browser.css" type="text/css"?>
-
-<window id="main-window"
-        onload="BrowserApp.startup();"
-        windowtype="navigator:browser"
-        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <script type="application/javascript" src="chrome://browser/content/browser.js"/>
-
-  <deck id="browsers" flex="1"/>
-
-</window>
diff --git a/mobile/android/chrome/content/config.js b/mobile/android/chrome/content/config.js
deleted file mode 100644
index 2c868f175..000000000
--- a/mobile/android/chrome/content/config.js
+++ /dev/null
@@ -1,673 +0,0 @@
-/* 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/. */
-"use strict";
-
-var {classes: Cc, interfaces: Ci, manager: Cm, utils: Cu} = Components;
-Cu.import("resource://gre/modules/Services.jsm");
-
-const VKB_ENTER_KEY = 13;   // User press of VKB enter key
-const INITIAL_PAGE_DELAY = 500;   // Initial pause on program start for scroll alignment
-const PREFS_BUFFER_MAX = 30;   // Max prefs buffer size for getPrefsBuffer()
-const PAGE_SCROLL_TRIGGER = 200;     // Triggers additional getPrefsBuffer() on user scroll-to-bottom
-const FILTER_CHANGE_TRIGGER = 200;     // Delay between responses to filterInput changes
-const INNERHTML_VALUE_DELAY = 100;    // Delay before providing prefs innerHTML value
-
-var gStringBundle = Services.strings.createBundle("chrome://browser/locale/config.properties");
-var gClipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
-
-
-/* ============================== NewPrefDialog ==============================
- *
- * New Preference Dialog Object and methods
- *
- * Implements User Interfaces for creation of a single(new) Preference setting
- *
- */
-var NewPrefDialog = {
-
-  _prefsShield: null,
-
-  _newPrefsDialog: null,
-  _newPrefItem: null,
-  _prefNameInputElt: null,
-  _prefTypeSelectElt: null,
-
-  _booleanValue: null,
-  _booleanToggle: null,
-  _stringValue: null,
-  _intValue: null,
-
-  _positiveButton: null,
-
-  get type() {
-    return this._prefTypeSelectElt.value;
-  },
-
-  set type(aType) {
-    this._prefTypeSelectElt.value = aType;
-    switch(this._prefTypeSelectElt.value) {
-      case "boolean":
-        this._prefTypeSelectElt.selectedIndex = 0;
-        break;
-      case "string":
-        this._prefTypeSelectElt.selectedIndex = 1;
-        break;
-      case "int":
-        this._prefTypeSelectElt.selectedIndex = 2;
-        break;
-    }
-
-    this._newPrefItem.setAttribute("typestyle", aType);
-  },
-
-  // Init the NewPrefDialog
-  init: function AC_init() {
-    this._prefsShield = document.getElementById("prefs-shield");
-
-    this._newPrefsDialog = document.getElementById("new-pref-container");
-    this._newPrefItem = document.getElementById("new-pref-item");
-    this._prefNameInputElt = document.getElementById("new-pref-name");
-    this._prefTypeSelectElt = document.getElementById("new-pref-type");
-
-    this._booleanValue = document.getElementById("new-pref-value-boolean");
-    this._stringValue = document.getElementById("new-pref-value-string");
-    this._intValue = document.getElementById("new-pref-value-int");
-
-    this._positiveButton = document.getElementById("positive-button");
-  },
-
-  // Called to update positive button to display text ("Create"/"Change), and enabled/disabled status
-  // As new pref name is initially displayed, re-focused, or modifed during user input
-  _updatePositiveButton: function AC_updatePositiveButton(aPrefName) {
-    this._positiveButton.textContent = gStringBundle.GetStringFromName("newPref.createButton");
-    this._positiveButton.setAttribute("disabled", true);
-    if (aPrefName == "") {
-      return;
-    }
-
-    // If item already in list, it's being changed, else added
-    let item = AboutConfig._list.filter(i => { return i.name == aPrefName });
-    if (item.length) {
-      this._positiveButton.textContent = gStringBundle.GetStringFromName("newPref.changeButton");
-    } else {
-      this._positiveButton.removeAttribute("disabled");
-    }
-  },
-
-  // When we want to cancel/hide an existing, or show a new pref dialog
-  toggleShowHide: function AC_toggleShowHide() {
-    if (this._newPrefsDialog.classList.contains("show")) {
-      this.hide();
-    } else {
-      this._show();
-    }
-  },
-
-  // When we want to show the new pref dialog / shield the prefs list
-  _show: function AC_show() {
-    this._newPrefsDialog.classList.add("show");
-    this._prefsShield.setAttribute("shown", true);
-
-    // Initial default field values
-    this._prefNameInputElt.value = "";
-    this._updatePositiveButton(this._prefNameInputElt.value);
-
-    this.type = "boolean";
-    this._booleanValue.value = "false";
-    this._stringValue.value = "";
-    this._intValue.value = "";
-
-    this._prefNameInputElt.focus();
-
-    window.addEventListener("keypress", this.handleKeypress, false);
-  },
-
-  // When we want to cancel/hide the new pref dialog / un-shield the prefs list
-  hide: function AC_hide() {
-    this._newPrefsDialog.classList.remove("show");
-    this._prefsShield.removeAttribute("shown");
-
-    window.removeEventListener("keypress", this.handleKeypress, false);
-  },
-
-  // Watch user key input so we can provide Enter key action, commit input values
-  handleKeypress: function AC_handleKeypress(aEvent) {
-    // Close our VKB on new pref enter key press
-    if (aEvent.keyCode == VKB_ENTER_KEY)
-      aEvent.target.blur();
-  },
-
-  // New prefs create dialog only allows creating a non-existing preference, doesn't allow for
-  // Changing an existing one on-the-fly, tap existing/displayed line item pref for that
-  create: function AC_create(aEvent) {
-    if (this._positiveButton.getAttribute("disabled") == "true") {
-      return;
-    }
-
-    switch(this.type) {
-      case "boolean":
-        Services.prefs.setBoolPref(this._prefNameInputElt.value, (this._booleanValue.value == "true") ? true : false);
-        break;
-      case "string":
-        Services.prefs.setCharPref(this._prefNameInputElt.value, this._stringValue.value);
-        break;
-      case "int":
-        Services.prefs.setIntPref(this._prefNameInputElt.value, this._intValue.value);
-        break;
-    }
-
-    // Ensure pref adds flushed to disk immediately
-    Services.prefs.savePrefFile(null);
-
-    this.hide();
-  },
-
-  // Display proper positive button text/state on new prefs name input focus
-  focusName: function AC_focusName(aEvent) {
-    this._updatePositiveButton(aEvent.target.value);
-  },
-
-  // Display proper positive button text/state as user changes new prefs name
-  updateName: function AC_updateName(aEvent) {
-    this._updatePositiveButton(aEvent.target.value);
-  },
-
-  // In new prefs dialog, bool prefs are <input type="text">, as they aren't yet tied to an
-  // Actual Services.prefs.*etBoolPref()
-  toggleBoolValue: function AC_toggleBoolValue() {
-    this._booleanValue.value = (this._booleanValue.value == "true" ? "false" : "true");
-  }
-}
-
-
-/* ============================== AboutConfig ==============================
- *
- * Main AboutConfig object and methods
- *
- * Implements User Interfaces for maintenance of a list of Preference settings
- *
- */
-var AboutConfig = {
-
-  contextMenuLINode: null,
-  filterInput: null,
-  _filterPrevInput: null,
-  _filterChangeTimer: null,
-  _prefsContainer: null,
-  _loadingContainer: null,
-  _list: null,
-
-  // Init the main AboutConfig dialog
-  init: function AC_init() {
-    this.filterInput = document.getElementById("filter-input");
-    this._prefsContainer = document.getElementById("prefs-container");
-    this._loadingContainer = document.getElementById("loading-container");
-
-    let list = Services.prefs.getChildList("");
-    this._list = list.sort().map( function AC_getMapPref(aPref) {
-      return new Pref(aPref);
-    }, this);
-
-    // Support filtering about:config via a ?filter=<string> param
-    let match = /[?&]filter=([^&]+)/i.exec(window.location.href);
-    if (match) {
-      this.filterInput.value = decodeURIComponent(match[1]);
-    }
-
-    // Display the current prefs list (retains searchFilter value)
-    this.bufferFilterInput();
-
-    // Setup the prefs observers
-    Services.prefs.addObserver("", this, false);
-  },
-
-  // Uninit the main AboutConfig dialog
-  uninit: function AC_uninit() {
-    // Remove the prefs observer
-    Services.prefs.removeObserver("", this);
-  },
-
-  // Clear the filterInput value, to display the entire list
-  clearFilterInput: function AC_clearFilterInput() {
-    this.filterInput.value = "";
-    this.bufferFilterInput();
-  },
-
-  // Buffer down rapid changes in filterInput value from keyboard
-  bufferFilterInput: function AC_bufferFilterInput() {
-    if (this._filterChangeTimer) {
-      clearTimeout(this._filterChangeTimer);
-    }
-
-    this._filterChangeTimer = setTimeout((function() {
-      this._filterChangeTimer = null;
-      // Display updated prefs list when filterInput value settles
-      this._displayNewList();
-    }).bind(this), FILTER_CHANGE_TRIGGER);
-  },
-
-  // Update displayed list when filterInput value changes
-  _displayNewList: function AC_displayNewList() {
-    // This survives the search filter value past a page refresh
-    this.filterInput.setAttribute("value", this.filterInput.value);
-
-    // Don't start new filter search if same as last
-    if (this.filterInput.value == this._filterPrevInput) {
-      return;
-    }
-    this._filterPrevInput = this.filterInput.value;
-
-    // Clear list item selection / context menu, prefs list, get first buffer, set scrolling on
-    this.selected = "";
-    this._clearPrefsContainer();
-    this._addMorePrefsToContainer();
-    window.onscroll = this.onScroll.bind(this);
-
-    // Pause for screen to settle, then ensure at top
-    setTimeout((function() {
-      window.scrollTo(0, 0);
-    }).bind(this), INITIAL_PAGE_DELAY);
-  },
-
-  // Clear the displayed preferences list
-  _clearPrefsContainer: function AC_clearPrefsContainer() {
-    // Quick clear the prefsContainer list
-    let empty = this._prefsContainer.cloneNode(false);
-    this._prefsContainer.parentNode.replaceChild(empty, this._prefsContainer); 
-    this._prefsContainer = empty;
-
-    // Quick clear the prefs li.HTML list
-    this._list.forEach(function(item) {
-      delete item.li;
-    });
-  },
-
-  // Get a small manageable block of prefs items, and add them to the displayed list
-  _addMorePrefsToContainer: function AC_addMorePrefsToContainer() {
-    // Create filter regex
-    let filterExp = this.filterInput.value ?
-      new RegExp(this.filterInput.value, "i") : null;
-
-    // Get a new block for the display list
-    let prefsBuffer = [];
-    for (let i = 0; i < this._list.length && prefsBuffer.length < PREFS_BUFFER_MAX; i++) {
-      if (!this._list[i].li && this._list[i].test(filterExp)) {
-        prefsBuffer.push(this._list[i]);
-      }
-    }
-
-    // Add the new block to the displayed list
-    for (let i = 0; i < prefsBuffer.length; i++) {
-      this._prefsContainer.appendChild(prefsBuffer[i].getOrCreateNewLINode());
-    }
-
-    // Determine if anything left to add later by scrolling
-    let anotherPrefsBufferRemains = false;
-    for (let i = 0; i < this._list.length; i++) {
-      if (!this._list[i].li && this._list[i].test(filterExp)) {
-        anotherPrefsBufferRemains = true;
-        break;
-      }
-    }
-
-    if (anotherPrefsBufferRemains) {
-      // If still more could be displayed, show the throbber
-      this._loadingContainer.style.display = "block";
-    } else {
-      // If no more could be displayed, hide the throbber, and stop noticing scroll events
-      this._loadingContainer.style.display = "none";
-      window.onscroll = null;
-    }
-  },
-
-  // If scrolling at the bottom, maybe add some more entries
-  onScroll: function AC_onScroll(aEvent) {
-    if (this._prefsContainer.scrollHeight - (window.pageYOffset + window.innerHeight) < PAGE_SCROLL_TRIGGER) {
-      if (!this._filterChangeTimer) {
-        this._addMorePrefsToContainer();
-      }
-    }
-  },
-
-
-  // Return currently selected list item node
-  get selected() {
-    return document.querySelector(".pref-item.selected");
-  },
-
-  // Set list item node as selected
-  set selected(aSelection) {
-    let currentSelection = this.selected;
-    if (aSelection == currentSelection) {
-      return;
-    }
-
-    // Clear any previous selection
-    if (currentSelection) {
-      currentSelection.classList.remove("selected");
-      currentSelection.removeEventListener("keypress", this.handleKeypress, false);
-    }
-
-    // Set any current selection
-    if (aSelection) {
-      aSelection.classList.add("selected");
-      aSelection.addEventListener("keypress", this.handleKeypress, false);
-    }
-  },
-
-  // Watch user key input so we can provide Enter key action, commit input values
-  handleKeypress: function AC_handleKeypress(aEvent) {
-    if (aEvent.keyCode == VKB_ENTER_KEY)
-      aEvent.target.blur();
-  },
-
-  // Return the target list item node of an action event
-  getLINodeForEvent: function AC_getLINodeForEvent(aEvent) {
-    let node = aEvent.target;
-    while (node && node.nodeName != "li") {
-      node = node.parentNode;
-    }
-
-    return node;
-  },
-
-  // Return a pref of a list item node
-  _getPrefForNode: function AC_getPrefForNode(aNode) {
-    let pref = aNode.getAttribute("name");
-
-    return new Pref(pref);
-  },
-
-  // When list item name or value are tapped
-  selectOrToggleBoolPref: function AC_selectOrToggleBoolPref(aEvent) {
-    let node = this.getLINodeForEvent(aEvent);
-
-    // If not already selected, just do so
-    if (this.selected != node) {
-      this.selected = node;
-      return;
-    }
-
-    // If already selected, and value is boolean, toggle it
-    let pref = this._getPrefForNode(node);
-    if (pref.type != Services.prefs.PREF_BOOL) {
-      return;
-    }
-
-    this.toggleBoolPref(aEvent);
-  },
-
-  // When finalizing list input values due to blur
-  setIntOrStringPref: function AC_setIntOrStringPref(aEvent) {
-    let node = this.getLINodeForEvent(aEvent);
-
-    // Skip if locked
-    let pref = this._getPrefForNode(node);
-    if (pref.locked) {
-      return;
-    }
-
-    // Boolean inputs blur to remove focus from "button"
-    if (pref.type == Services.prefs.PREF_BOOL) {
-      return;
-    }
-
-    // String and Int inputs change / commit on blur
-    pref.value = aEvent.target.value;
-  },
-
-  // When we reset a pref to it's default value (note resetting a user created pref will delete it)
-  resetDefaultPref: function AC_resetDefaultPref(aEvent) {
-    let node = this.getLINodeForEvent(aEvent);
-
-    // If not already selected, do so
-    if (this.selected != node) {
-      this.selected = node;
-    }
-
-    // Reset will handle any locked condition
-    let pref = this._getPrefForNode(node);
-    pref.reset();
-
-    // Ensure pref reset flushed to disk immediately
-    Services.prefs.savePrefFile(null);
-  },
-
-  // When we want to toggle a bool pref
-  toggleBoolPref: function AC_toggleBoolPref(aEvent) {
-    let node = this.getLINodeForEvent(aEvent);
-
-    // Skip if locked, or not boolean
-    let pref = this._getPrefForNode(node);
-    if (pref.locked) {
-      return;
-    }
-
-    // Toggle, and blur to remove field focus
-    pref.value = !pref.value;
-    aEvent.target.blur();
-  },
-
-  // When Int inputs have their Up or Down arrows toggled
-  incrOrDecrIntPref: function AC_incrOrDecrIntPref(aEvent, aInt) {
-    let node = this.getLINodeForEvent(aEvent);
-
-    // Skip if locked
-    let pref = this._getPrefForNode(node);
-    if (pref.locked) {
-      return;
-    }
-
-    pref.value += aInt;
-  },
-
-  // Observe preference changes
-  observe: function AC_observe(aSubject, aTopic, aPrefName) {
-    let pref = new Pref(aPrefName);
-
-    // Ignore uninteresting changes, and avoid "private" preferences
-    if (aTopic != "nsPref:changed") {
-      return;
-    }
-
-    // If pref type invalid, refresh display as user reset/removed an item from the list
-    if (pref.type == Services.prefs.PREF_INVALID) {
-      document.location.reload();
-      return;
-    }
-
-    // If pref onscreen, update in place.
-    let item = document.querySelector(".pref-item[name=\"" + CSS.escape(pref.name) + "\"]");
-    if (item) {
-      item.setAttribute("value", pref.value);
-      let input = item.querySelector("input");
-      input.setAttribute("value", pref.value);
-      input.value = pref.value;
-
-      pref.default ?
-        item.querySelector(".reset").setAttribute("disabled", "true") :
-        item.querySelector(".reset").removeAttribute("disabled");
-      return;
-    }
-
-    // If pref not already in list, refresh display as it's being added
-    let anyWhere = this._list.filter(i => { return i.name == pref.name });
-    if (!anyWhere.length) {
-      document.location.reload();
-    }
-  },
-
-  // Quick context menu helpers for about:config
-  clipboardCopy: function AC_clipboardCopy(aField) {
-    let pref = this._getPrefForNode(this.contextMenuLINode);
-    if (aField == 'name') {
-      gClipboardHelper.copyString(pref.name);
-    } else {
-      gClipboardHelper.copyString(pref.value);
-    }
-  }
-}
-
-
-/* ============================== Pref ==============================
- *
- * Individual Preference object / methods
- *
- * Defines a Pref object, a document list item tied to Preferences Services
- * And the methods by which they interact.
- *
- */
-function Pref(aName) {
-  this.name = aName;
-}
-
-Pref.prototype = {
-  get type() {
-    return Services.prefs.getPrefType(this.name);
-  },
-
-  get value() {
-    switch (this.type) {
-      case Services.prefs.PREF_BOOL:
-        return Services.prefs.getBoolPref(this.name);
-      case Services.prefs.PREF_INT:
-        return Services.prefs.getIntPref(this.name);
-      case Services.prefs.PREF_STRING:
-      default:
-        return Services.prefs.getCharPref(this.name);
-    }
-
-  },
-  set value(aPrefValue) {
-    switch (this.type) {
-      case Services.prefs.PREF_BOOL:
-        Services.prefs.setBoolPref(this.name, aPrefValue);
-        break;
-      case Services.prefs.PREF_INT:
-        Services.prefs.setIntPref(this.name, aPrefValue);
-        break;
-      case Services.prefs.PREF_STRING:
-      default:
-        Services.prefs.setCharPref(this.name, aPrefValue);
-    }
-
-    // Ensure pref change flushed to disk immediately
-    Services.prefs.savePrefFile(null);
-  },
-
-  get default() {
-    return !Services.prefs.prefHasUserValue(this.name);
-  },
-
-  get locked() {
-    return Services.prefs.prefIsLocked(this.name);
-  },
-
-  reset: function AC_reset() {
-    Services.prefs.clearUserPref(this.name);
-  },
-
-  test: function AC_test(aValue) {
-    return aValue ? aValue.test(this.name) : true;
-  },
-
-  // Get existing or create new LI node for the pref
-  getOrCreateNewLINode: function AC_getOrCreateNewLINode() {
-    if (!this.li) {
-      this.li = document.createElement("li");
-
-      this.li.className = "pref-item";
-      this.li.setAttribute("name", this.name);
-
-      // Click callback to ensure list item selected even on no-action tap events
-      this.li.addEventListener("click",
-        function(aEvent) {
-          AboutConfig.selected = AboutConfig.getLINodeForEvent(aEvent);
-        },
-        false
-      );
-
-      // Contextmenu callback to identify selected list item
-      this.li.addEventListener("contextmenu",
-        function(aEvent) {
-          AboutConfig.contextMenuLINode = AboutConfig.getLINodeForEvent(aEvent);
-        },
-        false
-      );
-
-      this.li.setAttribute("contextmenu", "prefs-context-menu");
-
-      // Create list item outline, bind to object actions
-      this.li.innerHTML =
-        "<div class='pref-name' " +
-            "onclick='AboutConfig.selectOrToggleBoolPref(event);'>" +
-            this.name +
-        "</div>" +
-        "<div class='pref-item-line'>" +
-          "<input class='pref-value' value='' " +
-            "onblur='AboutConfig.setIntOrStringPref(event);' " +
-            "onclick='AboutConfig.selectOrToggleBoolPref(event);'>" +
-          "</input>" +
-          "<div class='pref-button reset' " +
-            "onclick='AboutConfig.resetDefaultPref(event);'>" +
-            gStringBundle.GetStringFromName("pref.resetButton") +
-          "</div>" +
-          "<div class='pref-button toggle' " +
-            "onclick='AboutConfig.toggleBoolPref(event);'>" +
-            gStringBundle.GetStringFromName("pref.toggleButton") +
-          "</div>" +
-          "<div class='pref-button up' " +
-            "onclick='AboutConfig.incrOrDecrIntPref(event, 1);'>" +
-          "</div>" +
-          "<div class='pref-button down' " +
-            "onclick='AboutConfig.incrOrDecrIntPref(event, -1);'>" +
-          "</div>" +
-        "</div>";
-
-      // Delay providing the list item values, until the LI is returned and added to the document
-      setTimeout(this._valueSetup.bind(this), INNERHTML_VALUE_DELAY);
-    }
-
-    return this.li;
-  },
-
-  // Initialize list item object values
-  _valueSetup: function AC_valueSetup() {
-
-    this.li.setAttribute("type", this.type);
-    this.li.setAttribute("value", this.value);
-
-    let valDiv = this.li.querySelector(".pref-value");
-    valDiv.value = this.value;
-
-    switch(this.type) {
-      case Services.prefs.PREF_BOOL:
-        valDiv.setAttribute("type", "button");
-        this.li.querySelector(".up").setAttribute("disabled", true);
-        this.li.querySelector(".down").setAttribute("disabled", true);
-        break;
-      case Services.prefs.PREF_STRING:
-        valDiv.setAttribute("type", "text");
-        this.li.querySelector(".up").setAttribute("disabled", true);
-        this.li.querySelector(".down").setAttribute("disabled", true);
-        this.li.querySelector(".toggle").setAttribute("disabled", true);
-        break;
-      case Services.prefs.PREF_INT:
-        valDiv.setAttribute("type", "number");
-        this.li.querySelector(".toggle").setAttribute("disabled", true);
-        break;
-    }
-
-    this.li.setAttribute("default", this.default);
-    if (this.default) {
-      this.li.querySelector(".reset").setAttribute("disabled", true);
-    }
-
-    if (this.locked) {
-      valDiv.setAttribute("disabled", this.locked);
-      this.li.querySelector(".pref-name").setAttribute("locked", true);
-    }
-  }
-}
-
diff --git a/mobile/android/chrome/content/config.xhtml b/mobile/android/chrome/content/config.xhtml
deleted file mode 100644
index fd40bb517..000000000
--- a/mobile/android/chrome/content/config.xhtml
+++ /dev/null
@@ -1,86 +0,0 @@
-<?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 html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" [
-<!ENTITY % globalDTD SYSTEM "chrome://global/locale/global.dtd" >
-%globalDTD;
-<!ENTITY % configDTD SYSTEM "chrome://browser/locale/config.dtd">
-%configDTD;
-]>
-
-<html xmlns="http://www.w3.org/1999/xhtml">
-
-<head>
-    <meta name="viewport" content="width=device-width; user-scalable=0" />
-
-    <link rel="stylesheet" href="chrome://browser/skin/config.css" type="text/css"/>
-    <script type="text/javascript;version=1.8" src="chrome://browser/content/config.js"></script>
-</head>
-
-<body dir="&locale.dir;" onload="NewPrefDialog.init(); AboutConfig.init();"
-                         onunload="AboutConfig.uninit();">
-
-    <div class="toolbar">
-        <div class="toolbar-container">
-            <div id="new-pref-toggle-button" onclick="NewPrefDialog.toggleShowHide();"/>
-
-            <div class="toolbar-item" id="filter-container">
-                <div id="filter-search-button"/>
-                <input id="filter-input" type="search" placeholder="&toolbar.searchPlaceholder;" value=""
-                    oninput="AboutConfig.bufferFilterInput();"/>
-                <div id="filter-input-clear-button" onclick="AboutConfig.clearFilterInput();"/>
-            </div>
-        </div>
-    </div>
-
-    <div id="content" ontouchstart="AboutConfig.filterInput.blur();">
-
-        <div id="new-pref-container">
-            <li class="pref-item" id="new-pref-item">
-                <div class="pref-item-line">
-                    <input class="pref-name" id="new-pref-name" type="text" placeholder="&newPref.namePlaceholder;"
-                        onfocus="NewPrefDialog.focusName(event);"
-                        oninput="NewPrefDialog.updateName(event);"/>
-                    <select class="pref-value" id="new-pref-type" onchange="NewPrefDialog.type = event.target.value;">
-                        <option value="boolean">&newPref.valueBoolean;</option>
-                        <option value="string">&newPref.valueString;</option>
-                        <option value="int">&newPref.valueInteger;</option>
-                    </select>
-                </div>
-
-                <div class="pref-item-line" id="new-pref-line-boolean">
-                    <input class="pref-value" id="new-pref-value-boolean" disabled="disabled"/>
-                    <div class="pref-button toggle" onclick="NewPrefDialog.toggleBoolValue();">&newPref.toggleButton;</div>
-                </div>
-
-                <div class="pref-item-line">
-                    <input class="pref-value" id="new-pref-value-string" placeholder="&newPref.stringPlaceholder;"/>
-                    <input class="pref-value" id="new-pref-value-int" placeholder="&newPref.numberPlaceholder;" type="number"/>
-                </div>
-
-                <div class="pref-item-line">
-                    <div class="pref-button cancel" id="negative-button" onclick="NewPrefDialog.hide();">&newPref.cancelButton;</div>
-                    <div class="pref-button create" id="positive-button" onclick="NewPrefDialog.create(event);"></div>
-                </div>
-            </li>
-        </div>
-
-        <div id="prefs-shield"></div>
-
-        <ul id="prefs-container"/>
-
-        <ul id="loading-container"><li></li></ul>
-
-    </div>
-
-    <menu type="context" id="prefs-context-menu">
-        <menuitem label="&contextMenu.copyPrefName;" onclick="AboutConfig.clipboardCopy('name');"></menuitem>
-        <menuitem label="&contextMenu.copyPrefValue;" onclick="AboutConfig.clipboardCopy('value');"></menuitem>
-    </menu>
-
-</body>
-</html>
diff --git a/mobile/android/chrome/content/content.js b/mobile/android/chrome/content/content.js
deleted file mode 100644
index 7cac22bd1..000000000
--- a/mobile/android/chrome/content/content.js
+++ /dev/null
@@ -1,159 +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/. */
-
-var { classes: Cc, interfaces: Ci, utils: Cu } = Components;
-
-Cu.import("resource://gre/modules/ExtensionContent.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "AboutReader", "resource://gre/modules/AboutReader.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "ReaderMode", "resource://gre/modules/ReaderMode.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent", "resource://gre/modules/LoginManagerContent.jsm");
-
-var dump = Cu.import("resource://gre/modules/AndroidLog.jsm", {}).AndroidLog.d.bind(null, "Content");
-
-var global = this;
-
-// This is copied from desktop's tab-content.js. See bug 1153485 about sharing this code somehow.
-var AboutReaderListener = {
-
-  _articlePromise: null,
-
-  _isLeavingReaderMode: false,
-
-  init: function() {
-    addEventListener("AboutReaderContentLoaded", this, false, true);
-    addEventListener("DOMContentLoaded", this, false);
-    addEventListener("pageshow", this, false);
-    addEventListener("pagehide", this, false);
-    addMessageListener("Reader:ToggleReaderMode", this);
-    addMessageListener("Reader:PushState", this);
-  },
-
-  receiveMessage: function(message) {
-    switch (message.name) {
-      case "Reader:ToggleReaderMode":
-        let url = content.document.location.href;
-        if (!this.isAboutReader) {
-          this._articlePromise = ReaderMode.parseDocument(content.document).catch(Cu.reportError);
-          ReaderMode.enterReaderMode(docShell, content);
-        } else {
-          this._isLeavingReaderMode = true;
-          ReaderMode.leaveReaderMode(docShell, content);
-        }
-        break;
-
-      case "Reader:PushState":
-        this.updateReaderButton(!!(message.data && message.data.isArticle));
-        break;
-    }
-  },
-
-  get isAboutReader() {
-    return content.document.documentURI.startsWith("about:reader");
-  },
-
-  handleEvent: function(aEvent) {
-    if (aEvent.originalTarget.defaultView != content) {
-      return;
-    }
-
-    switch (aEvent.type) {
-      case "AboutReaderContentLoaded":
-        if (!this.isAboutReader) {
-          return;
-        }
-
-        // If we are restoring multiple reader mode tabs during session restore, duplicate "DOMContentLoaded"
-        // events may be fired for the visible tab. The inital "DOMContentLoaded" may be received before the
-        // document body is available, so we avoid instantiating an AboutReader object, expecting that a
-        // valid message will follow. See bug 925983.
-        if (content.document.body) {
-          new AboutReader(global, content, this._articlePromise);
-          this._articlePromise = null;
-        }
-        break;
-
-      case "pagehide":
-        // this._isLeavingReaderMode is used here to keep the Reader Mode icon
-        // visible in the location bar when transitioning from reader-mode page
-        // back to the source page.
-        sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: this._isLeavingReaderMode });
-        if (this._isLeavingReaderMode) {
-          this._isLeavingReaderMode = false;
-        }
-        break;
-
-      case "pageshow":
-        // If a page is loaded from the bfcache, we won't get a "DOMContentLoaded"
-        // event, so we need to rely on "pageshow" in this case.
-        if (aEvent.persisted) {
-          this.updateReaderButton();
-        }
-        break;
-      case "DOMContentLoaded":
-        this.updateReaderButton();
-        break;
-    }
-  },
-  updateReaderButton: function(forceNonArticle) {
-    if (!ReaderMode.isEnabledForParseOnLoad || this.isAboutReader ||
-        !(content.document instanceof content.HTMLDocument) ||
-        content.document.mozSyntheticDocument) {
-      return;
-    }
-
-    this.scheduleReadabilityCheckPostPaint(forceNonArticle);
-  },
-
-  cancelPotentialPendingReadabilityCheck: function() {
-    if (this._pendingReadabilityCheck) {
-      removeEventListener("MozAfterPaint", this._pendingReadabilityCheck);
-      delete this._pendingReadabilityCheck;
-    }
-  },
-
-  scheduleReadabilityCheckPostPaint: function(forceNonArticle) {
-    if (this._pendingReadabilityCheck) {
-      // We need to stop this check before we re-add one because we don't know
-      // if forceNonArticle was true or false last time.
-      this.cancelPotentialPendingReadabilityCheck();
-    }
-    this._pendingReadabilityCheck = this.onPaintWhenWaitedFor.bind(this, forceNonArticle);
-    addEventListener("MozAfterPaint", this._pendingReadabilityCheck);
-  },
-
-  onPaintWhenWaitedFor: function(forceNonArticle, event) {
-    // In non-e10s, we'll get called for paints other than ours, and so it's
-    // possible that this page hasn't been laid out yet, in which case we
-    // should wait until we get an event that does relate to our layout. We
-    // determine whether any of our content got painted by checking if there
-    // are any painted rects.
-    if (!event.clientRects.length) {
-      return;
-    }
-
-    this.cancelPotentialPendingReadabilityCheck();
-
-    // Only send updates when there are articles; there's no point updating with
-    // |false| all the time.
-    if (ReaderMode.isProbablyReaderable(content.document)) {
-      sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: true });
-    } else if (forceNonArticle) {
-      sendAsyncMessage("Reader:UpdateReaderButton", { isArticle: false });
-    }
-  },
-};
-AboutReaderListener.init();
-
-addMessageListener("RemoteLogins:fillForm", function(message) {
-  LoginManagerContent.receiveMessage(message, content);
-});
-
-ExtensionContent.init(this);
-addEventListener("unload", () => {
-  ExtensionContent.uninit(this);
-});
diff --git a/mobile/android/chrome/content/geckoview.js b/mobile/android/chrome/content/geckoview.js
deleted file mode 100644
index b4685a8d3..000000000
--- a/mobile/android/chrome/content/geckoview.js
+++ /dev/null
@@ -1,32 +0,0 @@
-/* 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/. */
-"use strict";
-
-var Cc = Components.classes;
-var Ci = Components.interfaces;
-var Cu = Components.utils;
-var Cr = Components.results;
-
-Cu.import("resource://gre/modules/AppConstants.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Log",
- "resource://gre/modules/AndroidLog.jsm", "AndroidLog");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Messaging",
- "resource://gre/modules/Messaging.jsm", "Messaging");
-
-XPCOMUtils.defineLazyModuleGetter(this, "Services",
- "resource://gre/modules/Services.jsm", "Services");
-
-function dump(msg) {
-  Log.d("View", msg);
-}
-
-function startup() {
-    dump("zerdatime " + Date.now() + " - geckoivew chrome startup finished.");
-
-    // Notify Java that Gecko has loaded.
-    Messaging.sendRequest({ type: "Gecko:Ready" });
-}
diff --git a/mobile/android/chrome/content/geckoview.xul b/mobile/android/chrome/content/geckoview.xul
deleted file mode 100644
index a3d4d1290..000000000
--- a/mobile/android/chrome/content/geckoview.xul
+++ /dev/null
@@ -1,16 +0,0 @@
-<?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://browser/content/browser.css" type="text/css"?>
-
-<window id="main-window"
-        onload="startup();"
-        windowtype="navigator:browser"
-        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <browser id="content" type="content-primary" src="https://mozilla.com" flex="1" remote="true"/>
-
-  <script type="application/javascript" src="chrome://browser/content/geckoview.js"/>
-</window>
diff --git a/mobile/android/chrome/content/healthreport-prefs.js b/mobile/android/chrome/content/healthreport-prefs.js
deleted file mode 100644
index 5c4a50d38..000000000
--- a/mobile/android/chrome/content/healthreport-prefs.js
+++ /dev/null
@@ -1,6 +0,0 @@
-#filter substitution
-/* 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/. */
-
-pref("datareporting.healthreport.about.reportUrl", "https://fhr.cdn.mozilla.net/%LOCALE%/mobile/");
diff --git a/mobile/android/chrome/content/languages.properties b/mobile/android/chrome/content/languages.properties
deleted file mode 100644
index 53d30d125..000000000
--- a/mobile/android/chrome/content/languages.properties
+++ /dev/null
@@ -1,114 +0,0 @@
-# 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/.
-
-# LOCALIZATION NOTE: do not localize
-af=Afrikaans
-ak=Akan
-ar=عربي
-as=অসমীয়া
-ast-ES=Asturianu
-be=Беларуская
-bg=Български
-bn-BD=বাংলা (বাংলাদেশ)
-bn-IN=বাংলা (ভারত)
-br-FR=Brezhoneg
-ca=català
-ca-valencia=català (valencià)
-cs=Čeština
-cy=Cymraeg
-da=Dansk
-de=Deutsch
-de-AT=Deutsch (Österreich)
-de-CH=Deutsch (Schweiz)
-de-DE=Deutsch (Deutschland)
-el=Ελληνικά
-en-AU=English (Australian)
-en-CA=English (Canadian)
-en-GB=English (British)
-en-NZ=English (New Zealand)
-en-US=English (US)
-en-ZA=English (South African)
-eo=Esperanto
-es-AR=Español (de Argentina)
-es-CL=Español (de Chile)
-es-ES=Español (de España)
-es-MX=Español (de México)
-et=Eesti keel
-eu=Euskara
-fa=فارسی
-fi=suomi
-fr=Français
-fur-IT=Furlan
-fy-NL=Frysk
-ga-IE=Gaeilge
-gl=Galego
-gu-IN=ગુજરાતી
-he=עברית
-hi=हिन्दी
-hi-IN=हिन्दी (भारत)
-hr=Hrvatski
-hsb=Hornjoserbsce
-hu=Magyar
-hy-AM=Հայերեն
-id=Bahasa Indonesia
-is=íslenska
-it=Italiano
-ja=日本語
-ka=ქართული
-kk=Қазақ
-kn=ಕನ್ನಡ
-ko=한국어
-ku=Kurdî
-la=Latina
-lt=lietuvių
-lv=Latviešu
-mg=Malagasy
-mi=Māori (Aotearoa)
-mk=Македонски
-ml=മലയാളം
-mn=Монгол
-mr=मराठी
-nb-NO=Norsk bokmål
-ne-NP=नेपाली
-nl=Nederlands
-nn-NO=Norsk nynorsk
-nr=isiNdebele Sepumalanga
-nso=Sepedi
-oc=occitan (lengadocian)
-or=ଓଡ଼ିଆ
-pa-IN=ਪੰਜਾਬੀ
-pl=Polski
-pt-BR=Português (do Brasil)
-pt-PT=Português (Europeu)
-rm=rumantsch
-ro=română
-ru=Русский
-rw=Ikinyarwanda
-si=සිංහල
-sk=slovenčina
-sl=slovensko
-sq=Shqip
-sr=Српски
-sr-Latn=Srpski
-ss=Siswati
-st=Sesotho
-sv-SE=Svenska
-ta=தமிழ்
-ta-IN=தமிழ் (இந்தியா)
-ta-LK=தமிழ் (இலங்கை)
-te=తెలుగు
-th=ไทย
-tn=Setswana
-tr=Türkçe
-ts=Mutsonga
-tt-RU=Tatarça
-uk=Українська
-ur=اُردو
-ve=Tshivenḓa
-vi=Tiếng Việt
-wo=Wolof
-xh=isiXhosa
-zh-CN=中文 (简体)
-zh-TW=正體中文 (繁體)
-zu=isiZulu
diff --git a/mobile/android/chrome/content/netError.xhtml b/mobile/android/chrome/content/netError.xhtml
deleted file mode 100644
index f4c727c06..000000000
--- a/mobile/android/chrome/content/netError.xhtml
+++ /dev/null
@@ -1,406 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html [
-  <!ENTITY % htmlDTD
-    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-    "DTD/xhtml1-strict.dtd">
-  %htmlDTD;
-  <!ENTITY % netErrorDTD
-    SYSTEM "chrome://global/locale/netError.dtd">
-  %netErrorDTD;
-  <!ENTITY % globalDTD
-    SYSTEM "chrome://global/locale/global.dtd">
-  %globalDTD;
-]>
-
-<!-- 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 name="viewport" content="width=device-width; user-scalable=false;" />
-    <title>&loadError.label;</title>
-    <link rel="stylesheet" href="chrome://global/skin/netError.css" type="text/css" media="all" />
-    <!-- If the location of the favicon is changed here, the FAVICON_ERRORPAGE_URL symbol in
-         toolkit/components/places/src/nsFaviconService.h should be updated. -->
-    <link rel="icon" type="image/png" id="favicon" sizes="64x64" href="chrome://browser/skin/images/errorpage-warning.png"/>
-
-    <script type="application/javascript"><![CDATA[
-      // Error url MUST be formatted like this:
-      //   moz-neterror:page?e=error&u=url&d=desc
-      //
-      // or optionally, to specify an alternate CSS class to allow for
-      // custom styling and favicon:
-      //
-      //   moz-neterror:page?e=error&u=url&s=classname&d=desc
-
-      // Note that this file uses document.documentURI to get
-      // the URL (with the format from above). This is because
-      // document.location.href gets the current URI off the docshell,
-      // which is the URL displayed in the location bar, i.e.
-      // the URI that the user attempted to load.
-
-      function getErrorCode()
-      {
-        var url = document.documentURI;
-        var error = url.search(/e\=/);
-        var duffUrl = url.search(/\&u\=/);
-        return decodeURIComponent(url.slice(error + 2, duffUrl));
-      }
-
-      function getCSSClass()
-      {
-        var url = document.documentURI;
-        var matches = url.match(/s\=([^&]+)\&/);
-        // s is optional, if no match just return nothing
-        if (!matches || matches.length < 2)
-          return "";
-
-        // parenthetical match is the second entry
-        return decodeURIComponent(matches[1]);
-      }
-
-      function getDescription()
-      {
-        var url = document.documentURI;
-        var desc = url.search(/d\=/);
-
-        // desc == -1 if not found; if so, return an empty string
-        // instead of what would turn out to be portions of the URI
-        if (desc == -1)
-          return "";
-
-        return decodeURIComponent(url.slice(desc + 2));
-      }
-
-      function retryThis(buttonEl)
-      {
-        // Note: The application may wish to handle switching off "offline mode"
-        // before this event handler runs, but using a capturing event handler.
-
-        // Session history has the URL of the page that failed
-        // to load, not the one of the error page. So, just call
-        // reload(), which will also repost POST data correctly.
-        try {
-          location.reload();
-        } catch (e) {
-          // We probably tried to reload a URI that caused an exception to
-          // occur;  e.g. a nonexistent file.
-        }
-      }
-
-      function initPage()
-      {
-        var err = getErrorCode();
-
-        // if it's an unknown error or there's no title or description
-        // defined, get the generic message
-        var errTitle = document.getElementById("et_" + err);
-        var errDesc  = document.getElementById("ed_" + err);
-        if (!errTitle || !errDesc)
-        {
-          errTitle = document.getElementById("et_generic");
-          errDesc  = document.getElementById("ed_generic");
-        }
-
-        var title = document.getElementsByClassName("errorTitleText")[0];
-        if (title)
-        {
-          title.parentNode.replaceChild(errTitle, title);
-          // change id to the replaced child's id so styling works
-          errTitle.classList.add("errorTitleText");
-        }
-
-        var sd = document.getElementById("errorShortDescText");
-        if (sd)
-          sd.textContent = getDescription();
-
-        var ld = document.getElementById("errorLongDesc");
-        if (ld)
-        {
-          ld.parentNode.replaceChild(errDesc, ld);
-          // change id to the replaced child's id so styling works
-          errDesc.id = "errorLongDesc";
-        }
-
-        // remove undisplayed errors to avoid bug 39098
-        var errContainer = document.getElementById("errorContainer");
-        errContainer.parentNode.removeChild(errContainer);
-
-        var className = getCSSClass();
-        if (className && className != "expertBadCert") {
-          // Associate a CSS class with the root of the page, if one was passed in,
-          // to allow custom styling.
-          // Not "expertBadCert" though, don't want to deal with the favicon
-          document.documentElement.className = className;
-
-          // Also, if they specified a CSS class, they must supply their own
-          // favicon.  In order to trigger the browser to repaint though, we
-          // need to remove/add the link element.
-          var favicon = document.getElementById("favicon");
-          var faviconParent = favicon.parentNode;
-          faviconParent.removeChild(favicon);
-          favicon.setAttribute("href", "chrome://global/skin/icons/" + className + "_favicon.png");
-          faviconParent.appendChild(favicon);
-        }
-        if (className == "expertBadCert") {
-          showSecuritySection();
-        }
-
-        if (err == "remoteXUL") {
-          // Remove the "Try again" button for remote XUL errors given that
-          // it is useless.
-          document.getElementById("errorTryAgain").style.display = "none";
-        }
-
-        if (err == "cspBlocked") {
-          // Remove the "Try again" button for CSP violations, since it's
-          // almost certainly useless. (Bug 553180)
-          document.getElementById("errorTryAgain").style.display = "none";
-        }
-
-        if (err == "nssBadCert") {
-          // Remove the "Try again" button for security exceptions, since it's
-          // almost certainly useless.
-          document.getElementById("errorTryAgain").style.display = "none";
-          document.getElementById("errorPage").setAttribute("class", "certerror");
-        }
-        else {
-          // Remove the override block for non-certificate errors.  CSS-hiding
-          // isn't good enough here, because of bug 39098
-          var secOverride = document.getElementById("securityOverrideDiv");
-          secOverride.parentNode.removeChild(secOverride);
-        }
-
-        if (err == "inadequateSecurityError") {
-          // Remove the "Try again" button for HTTP/2 inadequate security as it
-          // is useless.
-          document.getElementById("errorTryAgain").style.display = "none";
-
-          var container = document.getElementById("errorLongDesc");
-          for (var span of container.querySelectorAll("span.hostname")) {
-            span.textContent = document.location.hostname;
-          }
-        }
-
-        addDomainErrorLinks();
-      }
-
-      function showSecuritySection() {
-        // Swap link out, content in
-        document.getElementById('securityOverrideContent').style.display = '';
-        document.getElementById('securityOverrideLink').style.display = 'none';
-      }
-
-      /* Try to preserve the links contained in the error description, like
-         the error code.
-
-         Also, in the case of SSL error pages about domain mismatch, see if
-         we can hyperlink the user to the correct site.  We don't want
-         to do this generically since it allows MitM attacks to redirect
-         users to a site under attacker control, but in certain cases
-         it is safe (and helpful!) to do so.  Bug 402210
-      */
-      function addDomainErrorLinks() {
-        // Rather than textContent, we need to treat description as HTML
-        var sd = document.getElementById("errorShortDescText");
-        if (sd) {
-          var desc = getDescription();
-
-          // sanitize description text - see bug 441169
-
-          // First, find the index of the <a> tags we care about, being
-          // careful not to use an over-greedy regex.
-          var codeRe = /<a id="errorCode" title="([^"]+)">/;
-          var codeResult = codeRe.exec(desc);
-          var domainRe = /<a id="cert_domain_link" title="([^"]+)">/;
-          var domainResult = domainRe.exec(desc);
-
-          // The order of these links in the description is fixed in
-          // TransportSecurityInfo.cpp:formatOverridableCertErrorMessage.
-          var firstResult = domainResult;
-          if(!domainResult)
-            firstResult = codeResult;
-          if (!firstResult)
-            return;
-          // Remove sd's existing children
-          sd.textContent = "";
-
-          // Everything up to the first link should be text content.
-          sd.appendChild(document.createTextNode(desc.slice(0, firstResult.index)));
-
-          // Now create the actual links.
-          if (domainResult) {
-            createLink(sd, "cert_domain_link", domainResult[1])
-            // Append text for anything between the two links.
-            sd.appendChild(document.createTextNode(desc.slice(desc.indexOf("</a>") + "</a>".length, codeResult.index)));
-          }
-          createLink(sd, "errorCode", codeResult[1])
-
-          // Finally, append text for anything after the last closing </a>.
-          sd.appendChild(document.createTextNode(desc.slice(desc.lastIndexOf("</a>") + "</a>".length)));
-        }
-
-        // Initialize the cert domain link.
-        var link = document.getElementById('cert_domain_link');
-        if (!link)
-          return;
-
-        var okHost = link.getAttribute("title");
-        var thisHost = document.location.hostname;
-        var proto = document.location.protocol;
-
-        // If okHost is a wildcard domain ("*.example.com") let's
-        // use "www" instead.  "*.example.com" isn't going to
-        // get anyone anywhere useful. bug 432491
-        okHost = okHost.replace(/^\*\./, "www.");
-
-        /* case #1:
-         * example.com uses an invalid security certificate.
-         *
-         * The certificate is only valid for www.example.com
-         *
-         * Make sure to include the "." ahead of thisHost so that
-         * a MitM attack on paypal.com doesn't hyperlink to "notpaypal.com"
-         *
-         * We'd normally just use a RegExp here except that we lack a
-         * library function to escape them properly (bug 248062), and
-         * domain names are famous for having '.' characters in them,
-         * which would allow spurious and possibly hostile matches.
-         */
-        if (okHost.endsWith("." + thisHost))
-          link.href = proto + okHost;
-
-        /* case #2:
-         * browser.garage.maemo.org uses an invalid security certificate.
-         *
-         * The certificate is only valid for garage.maemo.org
-         */
-        if (thisHost.endsWith("." + okHost))
-          link.href = proto + okHost;
-      }
-
-      function createLink(el, id, text) {
-        var anchorEl = document.createElement("a");
-        anchorEl.setAttribute("id", id);
-        anchorEl.setAttribute("title", text);
-        anchorEl.appendChild(document.createTextNode(text));
-        el.appendChild(anchorEl);
-      }
-    ]]></script>
-  </head>
-
-  <body id="errorPage" dir="&locale.dir;">
-
-    <!-- ERROR ITEM CONTAINER (removed during loading to avoid bug 39098) -->
-    <div id="errorContainer">
-      <div id="errorTitlesContainer">
-        <h1 id="et_generic">&generic.title;</h1>
-        <h1 id="et_dnsNotFound">&dnsNotFound.title;</h1>
-        <h1 id="et_fileNotFound">&fileNotFound.title;</h1>
-        <h1 id="et_fileAccessDenied">&fileAccessDenied.title;</h1>
-        <h1 id="et_malformedURI">&malformedURI.title;</h1>
-        <h1 id="et_unknownProtocolFound">&unknownProtocolFound.title;</h1>
-        <h1 id="et_connectionFailure">&connectionFailure.title;</h1>
-        <h1 id="et_netTimeout">&netTimeout.title;</h1>
-        <h1 id="et_redirectLoop">&redirectLoop.title;</h1>
-        <h1 id="et_unknownSocketType">&unknownSocketType.title;</h1>
-        <h1 id="et_netReset">&netReset.title;</h1>
-        <h1 id="et_notCached">&notCached.title;</h1>
-
-        <!-- Since Fennec not yet have offline mode, change the title to
-        connectionFailure to prevent confusion -->
-        <h1 id="et_netOffline">&connectionFailure.title;</h1>
-
-        <h1 id="et_netInterrupt">&netInterrupt.title;</h1>
-        <h1 id="et_deniedPortAccess">&deniedPortAccess.title;</h1>
-        <h1 id="et_proxyResolveFailure">&proxyResolveFailure.title;</h1>
-        <h1 id="et_proxyConnectFailure">&proxyConnectFailure.title;</h1>
-        <h1 id="et_contentEncodingError">&contentEncodingError.title;</h1>
-        <h1 id="et_unsafeContentType">&unsafeContentType.title;</h1>
-        <h1 id="et_nssFailure2">&nssFailure2.title;</h1>
-        <h1 id="et_nssBadCert">&nssBadCert.title;</h1>
-        <h1 id="et_cspBlocked">&cspBlocked.title;</h1>
-        <h1 id="et_remoteXUL">&remoteXUL.title;</h1>
-        <h1 id="et_corruptedContentErrorv2">&corruptedContentErrorv2.title;</h1>
-        <h1 id="et_sslv3Used">&sslv3Used.title;</h1>
-        <h1 id="et_weakCryptoUsed">&weakCryptoUsed.title;</h1>
-        <h1 id="et_inadequateSecurityError">&inadequateSecurityError.title;</h1>
-      </div>
-      <div id="errorDescriptionsContainer">
-        <div id="ed_generic">&generic.longDesc;</div>
-        <div id="ed_dnsNotFound">&dnsNotFound.longDesc4;</div>
-        <div id="ed_fileNotFound">&fileNotFound.longDesc;</div>
-        <div id="ed_fileAccessDenied">&fileAccessDenied.longDesc;</div>
-        <div id="ed_malformedURI">&malformedURI.longDesc2;</div>
-        <div id="ed_unknownProtocolFound">&unknownProtocolFound.longDesc;</div>
-        <div id="ed_connectionFailure">&connectionFailure.longDesc2;</div>
-        <div id="ed_netTimeout">&netTimeout.longDesc2;</div>
-        <div id="ed_redirectLoop">&redirectLoop.longDesc;</div>
-        <div id="ed_unknownSocketType">&unknownSocketType.longDesc;</div>
-        <div id="ed_netReset">&netReset.longDesc2;</div>
-        <div id="ed_notCached">&notCached.longDesc;</div>
-
-        <!-- Change longDesc from netOffline to connectionFailure,
-        suggesting user to check their wifi/cell_data connection -->
-        <div id="ed_netOffline">&connectionFailure.longDesc2;</div>
-
-        <div id="ed_netInterrupt">&netInterrupt.longDesc2;</div>
-        <div id="ed_deniedPortAccess">&deniedPortAccess.longDesc;</div>
-        <div id="ed_proxyResolveFailure">&proxyResolveFailure.longDesc3;</div>
-        <div id="ed_proxyConnectFailure">&proxyConnectFailure.longDesc;</div>
-        <div id="ed_contentEncodingError">&contentEncodingError.longDesc;</div>
-        <div id="ed_unsafeContentType">&unsafeContentType.longDesc;</div>
-        <div id="ed_nssFailure2">&nssFailure2.longDesc2;</div>
-        <div id="ed_nssBadCert">&nssBadCert.longDesc2;</div>
-        <div id="ed_cspBlocked">&cspBlocked.longDesc;</div>
-        <div id="ed_remoteXUL">&remoteXUL.longDesc;</div>
-        <div id="ed_corruptedContentErrorv2">&corruptedContentErrorv2.longDesc;</div>
-        <div id="ed_sslv3Used">&sslv3Used.longDesc;</div>
-        <div id="ed_weakCryptoUsed">&weakCryptoUsed.longDesc;</div>
-        <div id="ed_inadequateSecurityError">&inadequateSecurityError.longDesc;</div>
-      </div>
-    </div>
-
-    <!-- PAGE CONTAINER (for styling purposes only) -->
-    <div id="errorPageContainer">
-
-      <!-- Error Title -->
-      <div id="errorTitle">
-        <h1 class="errorTitleText" />
-      </div>
-
-      <!-- LONG CONTENT (the section most likely to require scrolling) -->
-      <div id="errorLongContent">
-
-        <!-- Short Description -->
-        <div id="errorShortDesc">
-          <p id="errorShortDescText" />
-        </div>
-
-        <!-- Long Description (Note: See netError.dtd for used XHTML tags) -->
-        <div id="errorLongDesc" />
-
-        <!-- Override section - For ssl errors only.  Removed on init for other
-             error types.  -->
-        <div id="securityOverrideDiv">
-          <a id="securityOverrideLink" href="javascript:showSecuritySection();" >&securityOverride.linkText;</a>
-          <div id="securityOverrideContent" style="display: none;">&securityOverride.warningContent;</div>
-        </div>
-      </div>
-
-      <!-- Retry Button -->
-      <button id="errorTryAgain" onclick="retryThis(this);">&retry.label;</button>
-
-    </div>
-
-    <!--
-    - Note: It is important to run the script this way, instead of using
-    - an onload handler. This is because error pages are loaded as
-    - LOAD_BACKGROUND, which means that onload handlers will not be executed.
-    -->
-    <script type="application/javascript">initPage();</script>
-
-  </body>
-</html>