Merge pull request #528 from g4jc/remove_browser_ui_telemetry

backport mozbug 1453667: Remove BrowserUITelemetry from Basilisk application

12 files changed, 0 insertions, 1006 deletions

diff --git a/application/basilisk/base/content/browser-context.inc b/application/basilisk/base/content/browser-context.inc
index 9fa90b11c..36e0478af 100644
--- a/application/basilisk/base/content/browser-context.inc
+++ b/application/basilisk/base/content/browser-context.inc
@@ -3,9 +3,6 @@
 # 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/.
 
-# NB: IF YOU ADD ITEMS TO THIS FILE, PLEASE UPDATE THE WHITELIST IN
-# BrowserUITelemetry.jsm. SEE BUG 991757 FOR DETAILS.
-
       <menugroup id="context-navigation">
         <menuitem id="context-back"
                   class="menuitem-iconic"
diff --git a/application/basilisk/base/content/browser-sidebar.js b/application/basilisk/base/content/browser-sidebar.js
index 5893e6015..27517d162 100644
--- a/application/basilisk/base/content/browser-sidebar.js
+++ b/application/basilisk/base/content/browser-sidebar.js
@@ -194,10 +194,6 @@ var SidebarUI = {
         return;
       }
 
-      if (this.isOpen && commandID != this.currentID) {
-        BrowserUITelemetry.countSidebarEvent(this.currentID, "hide");
-      }
-
       let broadcasters = document.getElementsByAttribute("group", "sidebar");
       for (let broadcaster of broadcasters) {
         // skip elements that observe sidebar broadcasters and random
@@ -260,7 +256,6 @@ var SidebarUI = {
       selBrowser.messageManager.sendAsyncMessage("Sidebar:VisibilityChange",
         {commandID: commandID, isOpen: true}
       );
-      BrowserUITelemetry.countSidebarEvent(commandID, "show");
     });
   },
 
@@ -298,7 +293,6 @@ var SidebarUI = {
     selBrowser.messageManager.sendAsyncMessage("Sidebar:VisibilityChange",
       {commandID: commandID, isOpen: false}
     );
-    BrowserUITelemetry.countSidebarEvent(commandID, "hide");
   },
 };
 
diff --git a/application/basilisk/base/content/browser.js b/application/basilisk/base/content/browser.js
index 64c0d86f5..38c340eea 100644
--- a/application/basilisk/base/content/browser.js
+++ b/application/basilisk/base/content/browser.js
@@ -16,7 +16,6 @@ Cu.import("resource://gre/modules/NotificationDB.jsm");
   ["AboutHome", "resource:///modules/AboutHome.jsm"],
   ["AddonWatcher", "resource://gre/modules/AddonWatcher.jsm"],
   ["AppConstants", "resource://gre/modules/AppConstants.jsm"],
-  ["BrowserUITelemetry", "resource:///modules/BrowserUITelemetry.jsm"],
   ["BrowserUsageTelemetry", "resource:///modules/BrowserUsageTelemetry.jsm"],
   ["BrowserUtils", "resource://gre/modules/BrowserUtils.jsm"],
   ["CastingApps", "resource:///modules/CastingApps.jsm"],
@@ -3722,18 +3721,6 @@ const BrowserSearch = {
     openUILinkIn(this.searchEnginesURL, where);
   },
 
-  _getSearchEngineId: function (engine) {
-    if (engine && engine.identifier) {
-      return engine.identifier;
-    }
-
-    if (!engine || (engine.name === undefined) ||
-        !Services.prefs.getBoolPref("toolkit.telemetry.enabled"))
-      return "other";
-
-    return "other-" + engine.name;
-  },
-
   /**
    * Helper to record a search with Telemetry.
    *
@@ -3752,7 +3739,6 @@ const BrowserSearch = {
    *        selected it: {selection: {index: The selected index, kind: "key" or "mouse"}}
    */
   recordSearchInTelemetry: function (engine, source, details={}) {
-    BrowserUITelemetry.countSearchEvent(source, null, details.selection);
     try {
       BrowserUsageTelemetry.recordSearch(engine, source, details);
     } catch (ex) {
@@ -3776,8 +3762,6 @@ const BrowserSearch = {
    *        (string) Where was the search link opened (e.g. new tab, current tab, ..).
    */
   recordOneoffSearchInTelemetry: function (engine, source, type, where) {
-    let id = this._getSearchEngineId(engine) + "." + source;
-    BrowserUITelemetry.countOneoffSearchEvent(id, type, where);
     try {
       const details = {type, isOneOff: true};
       BrowserUsageTelemetry.recordSearch(engine, source, details);
diff --git a/application/basilisk/base/content/nsContextMenu.js b/application/basilisk/base/content/nsContextMenu.js
index 589d670ab..3f77dcb90 100644
--- a/application/basilisk/base/content/nsContextMenu.js
+++ b/application/basilisk/base/content/nsContextMenu.js
@@ -85,9 +85,6 @@ nsContextMenu.prototype = {
 
     // Initialize (disable/remove) menu items.
     this.initItems();
-
-    // Register this opening of the menu with telemetry:
-    this._checkTelemetryForMenu(aXulMenu);
   },
 
   hiding: function CM_hiding() {
@@ -1782,65 +1779,6 @@ nsContextMenu.prototype = {
     menuItem.label = menuLabel;
     menuItem.accessKey = gNavigatorBundle.getString("contextMenuSearch.accesskey");
   },
-
-  _getTelemetryClickInfo: function(aXulMenu) {
-    this._onPopupHiding = () => {
-      aXulMenu.ownerDocument.removeEventListener("command", activationHandler, true);
-      aXulMenu.removeEventListener("popuphiding", this._onPopupHiding, true);
-      delete this._onPopupHiding;
-
-      let eventKey = [
-          this._telemetryPageContext,
-          this._telemetryHadCustomItems ? "withcustom" : "withoutcustom"
-      ];
-      let target = this._telemetryClickID || "close-without-interaction";
-      BrowserUITelemetry.registerContextMenuInteraction(eventKey, target);
-    };
-    let activationHandler = (e) => {
-      // Deal with command events being routed to command elements; figure out
-      // what triggered the event (which will have the right e.target)
-      if (e.sourceEvent) {
-        e = e.sourceEvent;
-      }
-      // Target should be in the menu (this catches using shortcuts for items
-      // not in the menu while the menu is up)
-      if (!aXulMenu.contains(e.target)) {
-        return;
-      }
-
-      // Check if this is a page menu item:
-      if (e.target.hasAttribute(PageMenuParent.GENERATEDITEMID_ATTR)) {
-        this._telemetryClickID = "custom-page-item";
-      } else {
-        this._telemetryClickID = (e.target.id || "unknown").replace(/^context-/i, "");
-      }
-    };
-    aXulMenu.ownerDocument.addEventListener("command", activationHandler, true);
-    aXulMenu.addEventListener("popuphiding", this._onPopupHiding, true);
-  },
-
-  _getTelemetryPageContextInfo: function() {
-    let rv = [];
-    for (let k of ["isContentSelected", "onLink", "onImage", "onCanvas", "onVideo", "onAudio",
-                   "onTextInput"]) {
-      if (this[k]) {
-        rv.push(k.replace(/^(?:is|on)(.)/, (match, firstLetter) => firstLetter.toLowerCase()));
-      }
-    }
-    if (!rv.length) {
-      rv.push('other');
-    }
-
-    return JSON.stringify(rv);
-  },
-
-  _checkTelemetryForMenu: function(aXulMenu) {
-    this._telemetryClickID = null;
-    this._telemetryPageContext = this._getTelemetryPageContextInfo();
-    this._telemetryHadCustomItems = this.hasPageMenu;
-    this._getTelemetryClickInfo(aXulMenu);
-  },
-
   createContainerMenu: function(aEvent) {
     return createUserContextMenu(aEvent, true,
                                  gContextMenuContentData.userContextId);
diff --git a/application/basilisk/base/content/tabbrowser.xml b/application/basilisk/base/content/tabbrowser.xml
index 463e74a52..f8dbcf364 100644
--- a/application/basilisk/base/content/tabbrowser.xml
+++ b/application/basilisk/base/content/tabbrowser.xml
@@ -6878,11 +6878,9 @@
             if (browser.audioMuted) {
               browser.unmute();
               this.removeAttribute("muted");
-              BrowserUITelemetry.countTabMutingEvent("unmute", aMuteReason);
             } else {
               browser.mute();
               this.setAttribute("muted", "true");
-              BrowserUITelemetry.countTabMutingEvent("mute", aMuteReason);
             }
             this.muteReason = aMuteReason || null;
             modifiedAttrs.push("muted");
diff --git a/application/basilisk/components/customizableui/CustomizableWidgets.jsm b/application/basilisk/components/customizableui/CustomizableWidgets.jsm
index 3e00d385f..642e06f0f 100644
--- a/application/basilisk/components/customizableui/CustomizableWidgets.jsm
+++ b/application/basilisk/components/customizableui/CustomizableWidgets.jsm
@@ -11,8 +11,6 @@ Cu.import("resource:///modules/CustomizableUI.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/AppConstants.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUITelemetry",
-  "resource:///modules/BrowserUITelemetry.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
   "resource://gre/modules/PlacesUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUIUtils",
@@ -497,7 +495,6 @@ const CustomizableWidgets = [
       item.addEventListener("click", e => {
         doc.defaultView.openUILink(tabInfo.url, e);
         CustomizableUI.hidePanelForNode(item);
-        BrowserUITelemetry.countSyncedTabEvent("open", "toolbarbutton-subview");
       });
       return item;
     },
@@ -1179,7 +1176,6 @@ if (Services.prefs.getBoolPref("privacy.panicButton.enabled")) {
       this._ensureSanitizer();
       this._sanitizer.range = this._getSanitizeRange(doc);
       let group = doc.getElementById("PanelUI-panic-timeSpan");
-      BrowserUITelemetry.countPanicEvent(group.selectedItem.id);
       group.selectedItem = doc.getElementById("PanelUI-panic-5min");
       let itemsToClear = [
         "cookies", "history", "openWindows", "formdata", "sessions", "cache", "downloads"
diff --git a/application/basilisk/components/customizableui/CustomizeMode.jsm b/application/basilisk/components/customizableui/CustomizeMode.jsm
index e63e25b0a..4365ddfbc 100644
--- a/application/basilisk/components/customizableui/CustomizeMode.jsm
+++ b/application/basilisk/components/customizableui/CustomizeMode.jsm
@@ -31,8 +31,6 @@ Cu.import("resource://gre/modules/AppConstants.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "DragPositionManager",
                                   "resource:///modules/DragPositionManager.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUITelemetry",
-                                  "resource:///modules/BrowserUITelemetry.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeManager",
                                   "resource://gre/modules/LightweightThemeManager.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "SessionStore",
@@ -1119,7 +1117,6 @@ CustomizeMode.prototype = {
     this.resetting = true;
     // Disable the reset button temporarily while resetting:
     let btn = this.document.getElementById("customization-reset-button");
-    BrowserUITelemetry.countCustomizationEvent("reset");
     btn.disabled = true;
     return Task.spawn(function*() {
       this._removePanelCustomizationPlaceholders();
@@ -1755,7 +1752,6 @@ CustomizeMode.prototype = {
         }
 
         CustomizableUI.removeWidgetFromArea(aDraggedItemId);
-        BrowserUITelemetry.countCustomizationEvent("remove");
         // Special widgets are removed outright, we can return here:
         if (CustomizableUI.isSpecialWidget(aDraggedItemId)) {
           return;
@@ -1797,7 +1793,6 @@ CustomizeMode.prototype = {
         this.wrapToolbarItem(aTargetNode, place);
       }
       this.wrapToolbarItem(draggedItem, place);
-      BrowserUITelemetry.countCustomizationEvent("move");
       return;
     }
 
@@ -1805,12 +1800,6 @@ CustomizeMode.prototype = {
     // widget to the end of the area.
     if (aTargetNode == aTargetArea.customizationTarget) {
       CustomizableUI.addWidgetToArea(aDraggedItemId, aTargetArea.id);
-      // For the purposes of BrowserUITelemetry, we consider both moving a widget
-      // within the same area, and adding a widget from one area to another area
-      // as a "move". An "add" is only when we move an item from the palette into
-      // an area.
-      let custEventType = aOriginArea.id == kPaletteId ? "add" : "move";
-      BrowserUITelemetry.countCustomizationEvent(custEventType);
       this._onDragEnd(aEvent);
       return;
     }
@@ -1847,14 +1836,8 @@ CustomizeMode.prototype = {
     } else {
       CustomizableUI.addWidgetToArea(aDraggedItemId, aTargetArea.id, position);
     }
-
     this._onDragEnd(aEvent);
 
-    // For BrowserUITelemetry, an "add" is only when we move an item from the palette
-    // into an area. Otherwise, it's a move.
-    let custEventType = aOriginArea.id == kPaletteId ? "add" : "move";
-    BrowserUITelemetry.countCustomizationEvent(custEventType);
-
     // If we dropped onto a skipintoolbarset item, manually correct the drop location:
     if (aTargetNode != itemForPlacement) {
       let draggedWrapper = draggedItem.parentNode;
diff --git a/application/basilisk/components/nsBrowserGlue.js b/application/basilisk/components/nsBrowserGlue.js
index ae00e30cf..3258159b6 100644
--- a/application/basilisk/components/nsBrowserGlue.js
+++ b/application/basilisk/components/nsBrowserGlue.js
@@ -27,7 +27,6 @@ XPCOMUtils.defineLazyServiceGetter(this, "AlertsService", "@mozilla.org/alerts-s
   ["AutoCompletePopup", "resource://gre/modules/AutoCompletePopup.jsm"],
   ["BookmarkHTMLUtils", "resource://gre/modules/BookmarkHTMLUtils.jsm"],
   ["BookmarkJSONUtils", "resource://gre/modules/BookmarkJSONUtils.jsm"],
-  ["BrowserUITelemetry", "resource:///modules/BrowserUITelemetry.jsm"],
   ["BrowserUsageTelemetry", "resource:///modules/BrowserUsageTelemetry.jsm"],
   ["ContentClick", "resource:///modules/ContentClick.jsm"],
   ["ContentPrefServiceParent", "resource://gre/modules/ContentPrefServiceParent.jsm"],
@@ -667,7 +666,6 @@ BrowserGlue.prototype = {
 
     SessionStore.init();
     BrowserUsageTelemetry.init();
-    BrowserUITelemetry.init();
     ContentSearch.init();
     FormValidationHandler.init();
 
diff --git a/application/basilisk/components/search/content/search.xml b/application/basilisk/components/search/content/search.xml
index 5c67bc649..41a5256d5 100644
--- a/application/basilisk/components/search/content/search.xml
+++ b/application/basilisk/components/search/content/search.xml
@@ -1324,7 +1324,6 @@
 
       <method name="showSettings">
         <body><![CDATA[
-          BrowserUITelemetry.countSearchSettingsEvent(this.telemetryOrigin);
           openPreferences("paneSearch");
           // If the preference tab was already selected, the panel doesn't
           // close itself automatically.
diff --git a/application/basilisk/components/syncedtabs/TabListComponent.js b/application/basilisk/components/syncedtabs/TabListComponent.js
index d3aace8f9..aa60e4769 100644
--- a/application/basilisk/components/syncedtabs/TabListComponent.js
+++ b/application/basilisk/components/syncedtabs/TabListComponent.js
@@ -11,8 +11,6 @@ Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 let log = Cu.import("resource://gre/modules/Log.jsm", {})
             .Log.repository.getLogger("Sync.RemoteTabs");
 
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUITelemetry",
-  "resource:///modules/BrowserUITelemetry.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUIUtils",
   "resource:///modules/PlacesUIUtils.jsm");
 
@@ -115,7 +113,6 @@ TabListComponent.prototype = {
 
   onOpenTab(url, where, params) {
     this._window.openUILinkIn(url, where, params);
-    BrowserUITelemetry.countSyncedTabEvent("open", "sidebar");
   },
 
   onOpenTabs(urls, where) {
@@ -129,7 +126,6 @@ TabListComponent.prototype = {
       let loadInBackground = where == "tabshifted" ? true : false;
       this._getChromeWindow(this._window).gBrowser.loadTabs(urls, loadInBackground, false);
     }
-    BrowserUITelemetry.countSyncedTabEvent("openmultiple", "sidebar");
   },
 
   onCopyTabLocation(url) {
diff --git a/application/basilisk/modules/BrowserUITelemetry.jsm b/application/basilisk/modules/BrowserUITelemetry.jsm
deleted file mode 100644
index 2b7cc8c20..000000000
--- a/application/basilisk/modules/BrowserUITelemetry.jsm
+++ /dev/null
@@ -1,888 +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 = ["BrowserUITelemetry"];
-
-const {interfaces: Ci, utils: Cu} = Components;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
-  "resource://gre/modules/UITelemetry.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
-  "resource:///modules/RecentWindow.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
-  "resource:///modules/CustomizableUI.jsm");
-XPCOMUtils.defineLazyGetter(this, "Timer", function() {
-  let timer = {};
-  Cu.import("resource://gre/modules/Timer.jsm", timer);
-  return timer;
-});
-
-const MS_SECOND = 1000;
-const MS_MINUTE = MS_SECOND * 60;
-const MS_HOUR = MS_MINUTE * 60;
-
-XPCOMUtils.defineLazyGetter(this, "DEFAULT_AREA_PLACEMENTS", function() {
-  let result = {
-    "PanelUI-contents": [
-      "edit-controls",
-      "zoom-controls",
-      "new-window-button",
-      "privatebrowsing-button",
-      "save-page-button",
-      "print-button",
-      "history-panelmenu",
-      "fullscreen-button",
-      "find-button",
-      "preferences-button",
-      "add-ons-button",
-      "sync-button",
-      "developer-button",
-    ],
-    "nav-bar": [
-      "urlbar-container",
-      "search-container",
-      "bookmarks-menu-button",
-      "pocket-button",
-      "downloads-button",
-      "home-button",
-    ],
-    // It's true that toolbar-menubar is not visible
-    // on OS X, but the XUL node is definitely present
-    // in the document.
-    "toolbar-menubar": [
-      "menubar-items",
-    ],
-    "TabsToolbar": [
-      "tabbrowser-tabs",
-      "new-tab-button",
-      "alltabs-button",
-    ],
-    "PersonalToolbar": [
-      "personal-bookmarks",
-    ],
-  };
-
-  let showCharacterEncoding = Services.prefs.getComplexValue(
-    "browser.menu.showCharacterEncoding",
-    Ci.nsIPrefLocalizedString
-  ).data;
-  if (showCharacterEncoding == "true") {
-    result["PanelUI-contents"].push("characterencoding-button");
-  }
-
-  return result;
-});
-
-XPCOMUtils.defineLazyGetter(this, "DEFAULT_AREAS", function() {
-  return Object.keys(DEFAULT_AREA_PLACEMENTS);
-});
-
-XPCOMUtils.defineLazyGetter(this, "PALETTE_ITEMS", function() {
-  let result = [
-    "open-file-button",
-    "developer-button",
-    "feed-button",
-    "email-link-button",
-    "containers-panelmenu",
-  ];
-
-  let panelPlacements = DEFAULT_AREA_PLACEMENTS["PanelUI-contents"];
-  if (panelPlacements.indexOf("characterencoding-button") == -1) {
-    result.push("characterencoding-button");
-  }
-
-  if (Services.prefs.getBoolPref("privacy.panicButton.enabled")) {
-    result.push("panic-button");
-  }
-
-  return result;
-});
-
-XPCOMUtils.defineLazyGetter(this, "DEFAULT_ITEMS", function() {
-  let result = [];
-  for (let [, buttons] of Object.entries(DEFAULT_AREA_PLACEMENTS)) {
-    result = result.concat(buttons);
-  }
-  return result;
-});
-
-XPCOMUtils.defineLazyGetter(this, "ALL_BUILTIN_ITEMS", function() {
-  // These special cases are for click events on built-in items that are
-  // contained within customizable items (like the navigation widget).
-  const SPECIAL_CASES = [
-    "back-button",
-    "forward-button",
-    "urlbar-stop-button",
-    "urlbar-go-button",
-    "urlbar-reload-button",
-    "searchbar",
-    "cut-button",
-    "copy-button",
-    "paste-button",
-    "zoom-out-button",
-    "zoom-reset-button",
-    "zoom-in-button",
-    "BMB_bookmarksPopup",
-    "BMB_unsortedBookmarksPopup",
-    "BMB_bookmarksToolbarPopup",
-    "search-go-button",
-    "soundplaying-icon",
-  ]
-  return DEFAULT_ITEMS.concat(PALETTE_ITEMS)
-                      .concat(SPECIAL_CASES);
-});
-
-const OTHER_MOUSEUP_MONITORED_ITEMS = [
-  "PlacesChevron",
-  "PlacesToolbarItems",
-  "menubar-items",
-];
-
-// Items that open arrow panels will often be overlapped by
-// the panel that they're opening by the time the mouseup
-// event is fired, so for these items, we monitor mousedown.
-const MOUSEDOWN_MONITORED_ITEMS = [
-  "PanelUI-menu-button",
-];
-
-// Weakly maps browser windows to objects whose keys are relative
-// timestamps for when some kind of session started. For example,
-// when a customization session started. That way, when the window
-// exits customization mode, we can determine how long the session
-// lasted.
-const WINDOW_DURATION_MAP = new WeakMap();
-
-// Default bucket name, when no other bucket is active.
-const BUCKET_DEFAULT = "__DEFAULT__";
-// Bucket prefix, for named buckets.
-const BUCKET_PREFIX = "bucket_";
-// Standard separator to use between different parts of a bucket name, such
-// as primary name and the time step string.
-const BUCKET_SEPARATOR = "|";
-
-this.BrowserUITelemetry = {
-  init: function() {
-    UITelemetry.addSimpleMeasureFunction("toolbars",
-                                         this.getToolbarMeasures.bind(this));
-    UITelemetry.addSimpleMeasureFunction("contextmenu",
-                                         this.getContextMenuInfo.bind(this));
-    UITelemetry.addSimpleMeasureFunction("syncstate",
-                                         this.getSyncState.bind(this));
-
-    Services.obs.addObserver(this, "sessionstore-windows-restored", false);
-    Services.obs.addObserver(this, "browser-delayed-startup-finished", false);
-    Services.obs.addObserver(this, "autocomplete-did-enter-text", false);
-    CustomizableUI.addListener(this);
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    switch (aTopic) {
-      case "sessionstore-windows-restored":
-        this._gatherFirstWindowMeasurements();
-        break;
-      case "browser-delayed-startup-finished":
-        this._registerWindow(aSubject);
-        break;
-      case "autocomplete-did-enter-text":
-        let input = aSubject.QueryInterface(Ci.nsIAutoCompleteInput);
-        if (input && input.id == "urlbar" && !input.inPrivateContext &&
-            input.popup.selectedIndex != -1) {
-          this._logAwesomeBarSearchResult(input.textValue);
-        }
-        break;
-    }
-  },
-
-  /**
-   * For the _countableEvents object, constructs a chain of
-   * Javascript Objects with the keys in aKeys, with the final
-   * key getting the value in aEndWith. If the final key already
-   * exists in the final object, its value is not set. In either
-   * case, a reference to the second last object in the chain is
-   * returned.
-   *
-   * Example - suppose I want to store:
-   * _countableEvents: {
-   *   a: {
-   *     b: {
-   *       c: 0
-   *     }
-   *   }
-   * }
-   *
-   * And then increment the "c" value by 1, you could call this
-   * function like this:
-   *
-   * let example = this._ensureObjectChain([a, b, c], 0);
-   * example["c"]++;
-   *
-   * Subsequent repetitions of these last two lines would
-   * simply result in the c value being incremented again
-   * and again.
-   *
-   * @param aKeys the Array of keys to chain Objects together with.
-   * @param aEndWith the value to assign to the last key.
-   * @param aRoot the root object onto which we create/get the object chain
-   *              designated by aKeys.
-   * @returns a reference to the second last object in the chain -
-   *          so in our example, that'd be "b".
-   */
-  _ensureObjectChain: function(aKeys, aEndWith, aRoot) {
-    let current = aRoot;
-    let parent = null;
-    aKeys.unshift(this._bucket);
-    for (let [i, key] of aKeys.entries()) {
-      if (!(key in current)) {
-        if (i == aKeys.length - 1) {
-          current[key] = aEndWith;
-        } else {
-          current[key] = {};
-        }
-      }
-      parent = current;
-      current = current[key];
-    }
-    return parent;
-  },
-
-  _countableEvents: {},
-  _countEvent: function(aKeyArray, root=this._countableEvents) {
-    let countObject = this._ensureObjectChain(aKeyArray, 0, root);
-    let lastItemKey = aKeyArray[aKeyArray.length - 1];
-    countObject[lastItemKey]++;
-  },
-
-  _countMouseUpEvent: function(aCategory, aAction, aButton) {
-    const BUTTONS = ["left", "middle", "right"];
-    let buttonKey = BUTTONS[aButton];
-    if (buttonKey) {
-      this._countEvent([aCategory, aAction, buttonKey]);
-    }
-  },
-
-  _firstWindowMeasurements: null,
-  _gatherFirstWindowMeasurements: function() {
-    // We'll gather measurements as soon as the session has restored.
-    // We do this here instead of waiting for UITelemetry to ask for
-    // our measurements because at that point all browser windows have
-    // probably been closed, since the vast majority of saved-session
-    // pings are gathered during shutdown.
-    let win = RecentWindow.getMostRecentBrowserWindow({
-      private: false,
-      allowPopups: false,
-    });
-
-    Services.search.init(rv => {
-      // If there are no such windows (or we've just about found one
-      // but it's closed already), we're out of luck. :(
-      let hasWindow = win && !win.closed;
-      this._firstWindowMeasurements = hasWindow ? this._getWindowMeasurements(win, rv)
-                                                : {};
-    });
-  },
-
-  _registerWindow: function(aWindow) {
-    aWindow.addEventListener("unload", this);
-    let document = aWindow.document;
-
-    for (let areaID of CustomizableUI.areas) {
-      let areaNode = document.getElementById(areaID);
-      if (areaNode) {
-        (areaNode.customizationTarget || areaNode).addEventListener("mouseup", this);
-      }
-    }
-
-    for (let itemID of OTHER_MOUSEUP_MONITORED_ITEMS) {
-      let item = document.getElementById(itemID);
-      if (item) {
-        item.addEventListener("mouseup", this);
-      }
-    }
-
-    for (let itemID of MOUSEDOWN_MONITORED_ITEMS) {
-      let item = document.getElementById(itemID);
-      if (item) {
-        item.addEventListener("mousedown", this);
-      }
-    }
-
-    WINDOW_DURATION_MAP.set(aWindow, {});
-  },
-
-  _unregisterWindow: function(aWindow) {
-    aWindow.removeEventListener("unload", this);
-    let document = aWindow.document;
-
-    for (let areaID of CustomizableUI.areas) {
-      let areaNode = document.getElementById(areaID);
-      if (areaNode) {
-        (areaNode.customizationTarget || areaNode).removeEventListener("mouseup", this);
-      }
-    }
-
-    for (let itemID of OTHER_MOUSEUP_MONITORED_ITEMS) {
-      let item = document.getElementById(itemID);
-      if (item) {
-        item.removeEventListener("mouseup", this);
-      }
-    }
-
-    for (let itemID of MOUSEDOWN_MONITORED_ITEMS) {
-      let item = document.getElementById(itemID);
-      if (item) {
-        item.removeEventListener("mousedown", this);
-      }
-    }
-  },
-
-  handleEvent: function(aEvent) {
-    switch (aEvent.type) {
-      case "unload":
-        this._unregisterWindow(aEvent.currentTarget);
-        break;
-      case "mouseup":
-        this._handleMouseUp(aEvent);
-        break;
-      case "mousedown":
-        this._handleMouseDown(aEvent);
-        break;
-    }
-  },
-
-  _handleMouseUp: function(aEvent) {
-    let targetID = aEvent.currentTarget.id;
-
-    switch (targetID) {
-      case "PlacesToolbarItems":
-        this._PlacesToolbarItemsMouseUp(aEvent);
-        break;
-      case "PlacesChevron":
-        this._PlacesChevronMouseUp(aEvent);
-        break;
-      case "menubar-items":
-        this._menubarMouseUp(aEvent);
-        break;
-      default:
-        this._checkForBuiltinItem(aEvent);
-    }
-  },
-
-  _handleMouseDown: function(aEvent) {
-    if (aEvent.currentTarget.id == "PanelUI-menu-button") {
-      // _countMouseUpEvent expects a detail for the second argument,
-      // but we don't really have any details to give. Just passing in
-      // "button" is probably simpler than trying to modify
-      // _countMouseUpEvent for this particular case.
-      this._countMouseUpEvent("click-menu-button", "button", aEvent.button);
-    }
-  },
-
-  _PlacesChevronMouseUp: function(aEvent) {
-    let target = aEvent.originalTarget;
-    let result = target.id == "PlacesChevron" ? "chevron" : "overflowed-item";
-    this._countMouseUpEvent("click-bookmarks-bar", result, aEvent.button);
-  },
-
-  _PlacesToolbarItemsMouseUp: function(aEvent) {
-    let target = aEvent.originalTarget;
-    // If this isn't a bookmark-item, we don't care about it.
-    if (!target.classList.contains("bookmark-item")) {
-      return;
-    }
-
-    let result = target.hasAttribute("container") ? "container" : "item";
-    this._countMouseUpEvent("click-bookmarks-bar", result, aEvent.button);
-  },
-
-  _menubarMouseUp: function(aEvent) {
-    let target = aEvent.originalTarget;
-    let tag = target.localName
-    let result = (tag == "menu" || tag == "menuitem") ? tag : "other";
-    this._countMouseUpEvent("click-menubar", result, aEvent.button);
-  },
-
-  _bookmarksMenuButtonMouseUp: function(aEvent) {
-    let bookmarksWidget = CustomizableUI.getWidget("bookmarks-menu-button");
-    if (bookmarksWidget.areaType == CustomizableUI.TYPE_MENU_PANEL) {
-      // In the menu panel, only the star is visible, and that opens up the
-      // bookmarks subview.
-      this._countMouseUpEvent("click-bookmarks-menu-button", "in-panel",
-                              aEvent.button);
-    } else {
-      let clickedItem = aEvent.originalTarget;
-      // Did we click on the star, or the dropmarker? The star
-      // has an anonid of "button". If we don't find that, we'll
-      // assume we clicked on the dropmarker.
-      let action = "menu";
-      if (clickedItem.getAttribute("anonid") == "button") {
-        // We clicked on the star - now we just need to record
-        // whether or not we're adding a bookmark or editing an
-        // existing one.
-        let bookmarksMenuNode =
-          bookmarksWidget.forWindow(aEvent.target.ownerGlobal).node;
-        action = bookmarksMenuNode.hasAttribute("starred") ? "edit" : "add";
-      }
-      this._countMouseUpEvent("click-bookmarks-menu-button", action,
-                              aEvent.button);
-    }
-  },
-
-  _checkForBuiltinItem: function(aEvent) {
-    let item = aEvent.originalTarget;
-
-    // We don't want to count clicks on the private browsing
-    // button for privacy reasons. See bug 1176391.
-    if (item.id == "privatebrowsing-button") {
-      return;
-    }
-
-    // We special-case the bookmarks-menu-button, since we want to
-    // monitor more than just clicks on it.
-    if (item.id == "bookmarks-menu-button" ||
-        getIDBasedOnFirstIDedAncestor(item) == "bookmarks-menu-button") {
-      this._bookmarksMenuButtonMouseUp(aEvent);
-      return;
-    }
-
-    // Perhaps we're seeing one of the default toolbar items
-    // being clicked.
-    if (ALL_BUILTIN_ITEMS.indexOf(item.id) != -1) {
-      // Base case - we clicked directly on one of our built-in items,
-      // and we can go ahead and register that click.
-      this._countMouseUpEvent("click-builtin-item", item.id, aEvent.button);
-      return;
-    }
-
-    // If not, we need to check if the item's anonid is in our list
-    // of built-in items to check.
-    if (ALL_BUILTIN_ITEMS.indexOf(item.getAttribute("anonid")) != -1) {
-      this._countMouseUpEvent("click-builtin-item", item.getAttribute("anonid"), aEvent.button);
-      return;
-    }
-
-    // If not, we need to check if one of the ancestors of the clicked
-    // item is in our list of built-in items to check.
-    let candidate = getIDBasedOnFirstIDedAncestor(item);
-    if (ALL_BUILTIN_ITEMS.indexOf(candidate) != -1) {
-      this._countMouseUpEvent("click-builtin-item", candidate, aEvent.button);
-    }
-  },
-
-  _getWindowMeasurements: function(aWindow, searchResult) {
-    let document = aWindow.document;
-    let result = {};
-
-    // Determine if the window is in the maximized, normal or
-    // fullscreen state.
-    result.sizemode = document.documentElement.getAttribute("sizemode");
-
-    // Determine if the Bookmarks bar is currently visible
-    let bookmarksBar = document.getElementById("PersonalToolbar");
-    result.bookmarksBarEnabled = bookmarksBar && !bookmarksBar.collapsed;
-
-    // Determine if the menubar is currently visible. On OS X, the menubar
-    // is never shown, despite not having the collapsed attribute set.
-    let menuBar = document.getElementById("toolbar-menubar");
-    result.menuBarEnabled =
-      menuBar && Services.appinfo.OS != "Darwin"
-              && menuBar.getAttribute("autohide") != "true";
-
-    // Determine if the titlebar is currently visible.
-    result.titleBarEnabled = !Services.prefs.getBoolPref("browser.tabs.drawInTitlebar");
-
-    // Examine all customizable areas and see what default items
-    // are present and missing.
-    let defaultKept = [];
-    let defaultMoved = [];
-    let nondefaultAdded = [];
-
-    for (let areaID of CustomizableUI.areas) {
-      let items = CustomizableUI.getWidgetIdsInArea(areaID);
-      for (let item of items) {
-        // Is this a default item?
-        if (DEFAULT_ITEMS.indexOf(item) != -1) {
-          // Ok, it's a default item - but is it in its default
-          // toolbar? We use Array.isArray instead of checking for
-          // toolbarID in DEFAULT_AREA_PLACEMENTS because an add-on might
-          // be clever and give itself the id of "toString" or something.
-          if (Array.isArray(DEFAULT_AREA_PLACEMENTS[areaID]) &&
-              DEFAULT_AREA_PLACEMENTS[areaID].indexOf(item) != -1) {
-            // The item is in its default toolbar
-            defaultKept.push(item);
-          } else {
-            defaultMoved.push(item);
-          }
-        } else if (PALETTE_ITEMS.indexOf(item) != -1) {
-          // It's a palette item that's been moved into a toolbar
-          nondefaultAdded.push(item);
-        }
-        // else, it's provided by an add-on, and we won't record it.
-      }
-    }
-
-    // Now go through the items in the palette to see what default
-    // items are in there.
-    let paletteItems =
-      CustomizableUI.getUnusedWidgets(aWindow.gNavToolbox.palette);
-    let defaultRemoved = [];
-    for (let item of paletteItems) {
-      if (DEFAULT_ITEMS.indexOf(item.id) != -1) {
-        defaultRemoved.push(item.id);
-      }
-    }
-
-    result.defaultKept = defaultKept;
-    result.defaultMoved = defaultMoved;
-    result.nondefaultAdded = nondefaultAdded;
-    result.defaultRemoved = defaultRemoved;
-
-    // Next, determine how many add-on provided toolbars exist.
-    let addonToolbars = 0;
-    let toolbars = document.querySelectorAll("toolbar[customizable=true]");
-    for (let toolbar of toolbars) {
-      if (DEFAULT_AREAS.indexOf(toolbar.id) == -1) {
-        addonToolbars++;
-      }
-    }
-    result.addonToolbars = addonToolbars;
-
-    // Find out how many open tabs we have in each window
-    let winEnumerator = Services.wm.getEnumerator("navigator:browser");
-    let visibleTabs = [];
-    let hiddenTabs = [];
-    while (winEnumerator.hasMoreElements()) {
-      let someWin = winEnumerator.getNext();
-      if (someWin.gBrowser) {
-        let visibleTabsNum = someWin.gBrowser.visibleTabs.length;
-        visibleTabs.push(visibleTabsNum);
-        hiddenTabs.push(someWin.gBrowser.tabs.length - visibleTabsNum);
-      }
-    }
-    result.visibleTabs = visibleTabs;
-    result.hiddenTabs = hiddenTabs;
-
-    if (Components.isSuccessCode(searchResult)) {
-      result.currentSearchEngine = Services.search.currentEngine.name;
-    }
-
-    return result;
-  },
-
-  getToolbarMeasures: function() {
-    let result = this._firstWindowMeasurements || {};
-    result.countableEvents = this._countableEvents;
-    result.durations = this._durations;
-    return result;
-  },
-
-  getSyncState: function() {
-    let result = {};
-    for (let sub of ["desktop", "mobile"]) {
-      let count = 0;
-      try {
-        count = Services.prefs.getIntPref("services.sync.clients.devices." + sub);
-      } catch (ex) {}
-      result[sub] = count;
-    }
-    return result;
-  },
-
-  countCustomizationEvent: function(aEventType) {
-    this._countEvent(["customize", aEventType]);
-  },
-
-  countSearchEvent: function(source, query, selection) {
-    this._countEvent(["search", source]);
-    if ((/^[a-zA-Z]+:[^\/\\]/).test(query)) {
-      this._countEvent(["search", "urlbar-keyword"]);
-    }
-    if (selection) {
-      this._countEvent(["search", "selection", source, selection.index, selection.kind]);
-    }
-  },
-
-  countOneoffSearchEvent: function(id, type, where) {
-    this._countEvent(["search-oneoff", id, type, where]);
-  },
-
-  countSearchSettingsEvent: function(source) {
-    this._countEvent(["click-builtin-item", source, "search-settings"]);
-  },
-
-  countPanicEvent: function(timeId) {
-    this._countEvent(["forget-button", timeId]);
-  },
-
-  countTabMutingEvent: function(action, reason) {
-    this._countEvent(["tab-audio-control", action, reason || "no reason given"]);
-  },
-
-  countSyncedTabEvent: function(what, where) {
-    // "what" will be, eg, "open"
-    // "where" will be "toolbarbutton-subview" or "sidebar"
-    this._countEvent(["synced-tabs", what, where]);
-  },
-
-  countSidebarEvent: function(sidebarID, action) {
-    // sidebarID is the ID of the sidebar (duh!)
-    // action will be "hide" or "show"
-    this._countEvent(["sidebar", sidebarID, action]);
-  },
-
-  _logAwesomeBarSearchResult: function (url) {
-    let spec = Services.search.parseSubmissionURL(url);
-    if (spec.engine) {
-      let matchedEngine = "default";
-      if (spec.engine.name !== Services.search.currentEngine.name) {
-        matchedEngine = "other";
-      }
-      this.countSearchEvent("autocomplete-" + matchedEngine);
-    }
-  },
-
-  _durations: {
-    customization: [],
-  },
-
-  onCustomizeStart: function(aWindow) {
-    this._countEvent(["customize", "start"]);
-    let durationMap = WINDOW_DURATION_MAP.get(aWindow);
-    if (!durationMap) {
-      durationMap = {};
-      WINDOW_DURATION_MAP.set(aWindow, durationMap);
-    }
-
-    durationMap.customization = {
-      start: aWindow.performance.now(),
-      bucket: this._bucket,
-    };
-  },
-
-  onCustomizeEnd: function(aWindow) {
-    let durationMap = WINDOW_DURATION_MAP.get(aWindow);
-    if (durationMap && "customization" in durationMap) {
-      let duration = aWindow.performance.now() - durationMap.customization.start;
-      this._durations.customization.push({
-        duration: duration,
-        bucket: durationMap.customization.bucket,
-      });
-      delete durationMap.customization;
-    }
-  },
-
-  _contextMenuItemWhitelist: new Set([
-    "close-without-interaction", // for closing the menu without clicking it.
-    "custom-page-item", // The ID we use for page-provided items
-    "unknown", // The bucket for stuff with no id.
-    // Everything we know of so far (which will exclude add-on items):
-    "navigation", "back", "forward", "reload", "stop", "bookmarkpage",
-    "spell-no-suggestions", "spell-add-to-dictionary",
-    "spell-undo-add-to-dictionary", "openlinkincurrent", "openlinkintab",
-    "openlink",
-    // "openlinkprivate" intentionally omitted for privacy reasons. See bug 1176391.
-    "bookmarklink", "savelink",
-    "marklinkMenu", "copyemail", "copylink", "media-play", "media-pause",
-    "media-mute", "media-unmute", "media-playbackrate",
-    "media-playbackrate-050x", "media-playbackrate-100x",
-    "media-playbackrate-125x", "media-playbackrate-150x", "media-playbackrate-200x",
-    "media-showcontrols", "media-hidecontrols",
-    "video-fullscreen", "leave-dom-fullscreen",
-    "reloadimage", "viewimage", "viewvideo", "copyimage-contents", "copyimage",
-    "copyvideourl", "copyaudiourl", "saveimage", "sendimage",
-    "setDesktopBackground", "viewimageinfo", "viewimagedesc", "savevideo",
-    "saveaudio", "video-saveimage", "sendvideo", "sendaudio",
-    "ctp-play", "ctp-hide", "savepage", "pocket", "markpageMenu",
-    "viewbgimage", "undo", "cut", "copy", "paste", "delete", "selectall",
-    "keywordfield", "searchselect", "frame", "showonlythisframe",
-    "openframeintab", "openframe", "reloadframe", "bookmarkframe", "saveframe",
-    "printframe", "viewframesource", "viewframeinfo",
-    "viewpartialsource-selection", "viewpartialsource-mathml",
-    "viewsource", "viewinfo", "spell-check-enabled",
-    "spell-add-dictionaries-main", "spell-dictionaries",
-    "spell-dictionaries-menu", "spell-add-dictionaries",
-    "bidi-text-direction-toggle", "bidi-page-direction-toggle", "inspect",
-    "media-eme-learn-more"
-  ]),
-
-  _contextMenuInteractions: {},
-
-  registerContextMenuInteraction: function(keys, itemID) {
-    if (itemID) {
-      if (itemID == "openlinkprivate") {
-        // Don't record anything, not even an other-item count
-        // if the user chose to open in a private window. See
-        // bug 1176391.
-        return;
-      }
-
-      if (!this._contextMenuItemWhitelist.has(itemID)) {
-        itemID = "other-item";
-      }
-      keys.push(itemID);
-    }
-
-    this._countEvent(keys, this._contextMenuInteractions);
-  },
-
-  getContextMenuInfo: function() {
-    return this._contextMenuInteractions;
-  },
-
-  _bucket: BUCKET_DEFAULT,
-  _bucketTimer: null,
-
-  /**
-   * Default bucket name, when no other bucket is active.
-   */
-  get BUCKET_DEFAULT() {
-    return BUCKET_DEFAULT;
-  },
-
-  /**
-   * Bucket prefix, for named buckets.
-   */
-  get BUCKET_PREFIX() {
-    return BUCKET_PREFIX;
-  },
-
-  /**
-   * Standard separator to use between different parts of a bucket name, such
-   * as primary name and the time step string.
-   */
-  get BUCKET_SEPARATOR() {
-    return BUCKET_SEPARATOR;
-  },
-
-  get currentBucket() {
-    return this._bucket;
-  },
-
-  /**
-   * Sets a named bucket for all countable events and select durections to be
-   * put into.
-   *
-   * @param aName  Name of bucket, or null for default bucket name (__DEFAULT__)
-   */
-  setBucket: function(aName) {
-    if (this._bucketTimer) {
-      Timer.clearTimeout(this._bucketTimer);
-      this._bucketTimer = null;
-    }
-
-    if (aName)
-      this._bucket = BUCKET_PREFIX + aName;
-    else
-      this._bucket = BUCKET_DEFAULT;
-  },
-
-  /**
-  * Sets a bucket that expires at the rate of a given series of time steps.
-  * Once the bucket expires, the current bucket will automatically revert to
-  * the default bucket. While the bucket is expiring, it's name is postfixed
-  * by '|' followed by a short string representation of the time step it's
-  * currently in.
-  * If any other bucket (expiring or normal) is set while an expiring bucket is
-  * still expiring, the old expiring bucket stops expiring and the new bucket
-  * immediately takes over.
-  *
-  * @param aName       Name of bucket.
-  * @param aTimeSteps  An array of times in milliseconds to count up to before
-  *                    reverting back to the default bucket. The array of times
-  *                    is expected to be pre-sorted in ascending order.
-  *                    For example, given a bucket name of 'bucket', the times:
-  *                      [60000, 300000, 600000]
-  *                    will result in the following buckets:
-  *                    * bucket|1m - for the first 1 minute
-  *                    * bucket|5m - for the following 4 minutes
-  *                                  (until 5 minutes after the start)
-  *                    * bucket|10m - for the following 5 minutes
-  *                                   (until 10 minutes after the start)
-  *                    * __DEFAULT__ - until a new bucket is set
-  * @param aTimeOffset Time offset, in milliseconds, from which to start
-  *                    counting. For example, if the first time step is 1000ms,
-  *                    and the time offset is 300ms, then the next time step
-  *                    will become active after 700ms. This affects all
-  *                    following time steps also, meaning they will also all be
-  *                    timed as though they started expiring 300ms before
-  *                    setExpiringBucket was called.
-  */
-  setExpiringBucket: function(aName, aTimeSteps, aTimeOffset = 0) {
-    if (aTimeSteps.length === 0) {
-      this.setBucket(null);
-      return;
-    }
-
-    if (this._bucketTimer) {
-      Timer.clearTimeout(this._bucketTimer);
-      this._bucketTimer = null;
-    }
-
-    // Make a copy of the time steps array, so we can safely modify it without
-    // modifying the original array that external code has passed to us.
-    let steps = [...aTimeSteps];
-    let msec = steps.shift();
-    let postfix = this._toTimeStr(msec);
-    this.setBucket(aName + BUCKET_SEPARATOR + postfix);
-
-    this._bucketTimer = Timer.setTimeout(() => {
-      this._bucketTimer = null;
-      this.setExpiringBucket(aName, steps, aTimeOffset + msec);
-    }, msec - aTimeOffset);
-  },
-
-  /**
-   * Formats a time interval, in milliseconds, to a minimal non-localized string
-   * representation. Format is: 'h' for hours, 'm' for minutes, 's' for seconds,
-   * 'ms' for milliseconds.
-   * Examples:
-   *   65 => 65ms
-   *   1000 => 1s
-   *   60000 => 1m
-   *   61000 => 1m01s
-   *
-   * @param aTimeMS  Time in milliseconds
-   *
-   * @return Minimal string representation.
-   */
-  _toTimeStr: function(aTimeMS) {
-    let timeStr = "";
-
-    function reduce(aUnitLength, aSymbol) {
-      if (aTimeMS >= aUnitLength) {
-        let units = Math.floor(aTimeMS / aUnitLength);
-        aTimeMS = aTimeMS - (units * aUnitLength)
-        timeStr += units + aSymbol;
-      }
-    }
-
-    reduce(MS_HOUR, "h");
-    reduce(MS_MINUTE, "m");
-    reduce(MS_SECOND, "s");
-    reduce(1, "ms");
-
-    return timeStr;
-  },
-};
-
-/**
- * Returns the id of the first ancestor of aNode that has an id. If aNode
- * has no parent, or no ancestor has an id, returns null.
- *
- * @param aNode the node to find the first ID'd ancestor of
- */
-function getIDBasedOnFirstIDedAncestor(aNode) {
-  while (!aNode.id) {
-    aNode = aNode.parentNode;
-    if (!aNode) {
-      return null;
-    }
-  }
-
-  return aNode.id;
-}
diff --git a/application/basilisk/modules/moz.build b/application/basilisk/modules/moz.build
index 684f662d7..d043d4799 100644
--- a/application/basilisk/modules/moz.build
+++ b/application/basilisk/modules/moz.build
@@ -8,7 +8,6 @@ EXTRA_JS_MODULES += [
     'AboutHome.jsm',
     'AboutNewTab.jsm',
     'AttributionCode.jsm',
-    'BrowserUITelemetry.jsm',
     'BrowserUsageTelemetry.jsm',
     'CastingApps.jsm',
     'ContentClick.jsm',