diff --git a/browser/app/permissions b/browser/app/permissions
index 473f094d3e..5856502b94 100644
--- a/browser/app/permissions
+++ b/browser/app/permissions
@@ -6,14 +6,6 @@
 # * permission is an integer between 1 and 15
 # See nsPermissionManager.cpp for more...
 
-# UITour
-origin	uitour	1	https://www.mozilla.org
-origin	uitour	1	https://self-repair.mozilla.org
-origin	uitour	1	https://support.mozilla.org
-origin	uitour	1	https://addons.mozilla.org
-origin	uitour	1	https://discovery.addons.mozilla.org
-origin	uitour	1	about:home
-
 # XPInstall
 origin	install	1	https://addons.mozilla.org
 origin	install	1	https://testpilot.firefox.com
diff --git a/browser/app/profile/firefox.js b/browser/app/profile/firefox.js
index ede62fd5e1..217f13757c 100644
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -178,17 +178,6 @@ pref("browser.eme.ui.enabled", true);
 pref("browser.eme.ui.enabled", false);
 #endif
 
-// UI tour experience.
-pref("browser.uitour.enabled", true);
-pref("browser.uitour.loglevel", "Error");
-pref("browser.uitour.requireSecure", true);
-pref("browser.uitour.themeOrigin", "https://addons.mozilla.org/%LOCALE%/firefox/themes/");
-pref("browser.uitour.url", "https://www.mozilla.org/%LOCALE%/firefox/%VERSION%/tour/");
-// This is used as a regexp match against the page's URL.
-pref("browser.uitour.readerViewTrigger", "^https:\\/\\/www\\.mozilla\\.org\\/[^\\/]+\\/firefox\\/reading\\/start");
-// How long to show a Hearbeat survey (two hours, in seconds)
-pref("browser.uitour.surveyDuration", 7200);
-
 pref("browser.customizemode.tip0.shown", false);
 pref("browser.customizemode.tip0.learnMoreUrl", "https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/customize");
 
diff --git a/browser/base/content/baseMenuOverlay.xul b/browser/base/content/baseMenuOverlay.xul
index da74ca077c..546103de10 100644
--- a/browser/base/content/baseMenuOverlay.xul
+++ b/browser/base/content/baseMenuOverlay.xul
@@ -52,10 +52,6 @@
 #else
                   />
 #endif
-        <menuitem id="menu_openTour"
-                  oncommand="openTourPage();"
-                  label="&helpShowTour2.label;"
-                  accesskey="&helpShowTour2.accesskey;"/>
         <menuitem id="menu_keyboardShortcuts"
                   oncommand="openHelpLink('keyboard-shortcuts')"
                   onclick="checkForMiddleClick(this, event);"
diff --git a/browser/base/content/browser-trackingprotection.js b/browser/base/content/browser-trackingprotection.js
index cacb0522c0..82743abbb4 100644
--- a/browser/base/content/browser-trackingprotection.js
+++ b/browser/base/content/browser-trackingprotection.js
@@ -226,14 +226,5 @@ var TrackingProtection = {
         style: "primary",
       },
     ];
-
-    let panelTarget = yield UITour.getTarget(window, "trackingProtection");
-    UITour.initForBrowser(gBrowser.selectedBrowser, window);
-    UITour.showInfo(window, panelTarget,
-                    gNavigatorBundle.getString("trackingProtection.intro.title"),
-                    gNavigatorBundle.getFormattedString("trackingProtection.intro.description2",
-                                                        [brandShortName]),
-                    undefined, buttons,
-                    { closeButtonCallback: () => this.dontShowIntroPanelAgain() });
   }),
 };
diff --git a/browser/base/content/browser.css b/browser/base/content/browser.css
index ac5bf9e9b6..e951985dc1 100644
--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -1152,71 +1152,6 @@ toolbarpaletteitem[place="palette"][hidden] {
   display: none;
 }
 
-/* UI Tour */
-
-@keyframes uitour-wobble {
-  from {
-    transform: rotate(0deg) translateX(3px) rotate(0deg);
-  }
-  50% {
-    transform: rotate(360deg) translateX(3px) rotate(-360deg);
-  }
-  to {
-    transform: rotate(720deg) translateX(0px) rotate(-720deg);
-  }
-}
-
-@keyframes uitour-zoom {
-  from {
-    transform: scale(0.8);
-  }
-  50% {
-    transform: scale(1.0);
-  }
-  to {
-    transform: scale(0.8);
-  }
-}
-
-@keyframes uitour-color {
-  from {
-    border-color: #5B9CD9;
-  }
-  50% {
-    border-color: #FF0000;
-  }
-  to {
-    border-color: #5B9CD9;
-  }
-}
-
-#UITourHighlightContainer,
-#UITourHighlight {
-  pointer-events: none;
-}
-
-#UITourHighlight[active] {
-  animation-delay: 2s;
-  animation-fill-mode: forwards;
-  animation-iteration-count: infinite;
-  animation-timing-function: linear;
-}
-
-#UITourHighlight[active="wobble"] {
-  animation-name: uitour-wobble;
-  animation-delay: 0s;
-  animation-duration: 1.5s;
-  animation-iteration-count: 1;
-}
-#UITourHighlight[active="zoom"] {
-  animation-name: uitour-zoom;
-  animation-duration: 1s;
-}
-#UITourHighlight[active="color"] {
-  animation-name: uitour-color;
-  animation-duration: 2s;
-}
-
 /* Combined context-menu items */
 #context-navigation > .menuitem-iconic > .menu-iconic-text,
 #context-navigation > .menuitem-iconic > .menu-accel-container {
diff --git a/browser/base/content/browser.js b/browser/base/content/browser.js
index 223895199d..8826f4d86d 100644
--- a/browser/base/content/browser.js
+++ b/browser/base/content/browser.js
@@ -48,7 +48,6 @@ Cu.import("resource://gre/modules/NotificationDB.jsm");
   ["Task", "resource://gre/modules/Task.jsm"],
   ["TelemetryStopwatch", "resource://gre/modules/TelemetryStopwatch.jsm"],
   ["Translation", "resource:///modules/translation/Translation.jsm"],
-  ["UITour", "resource:///modules/UITour.jsm"],
   ["UpdateUtils", "resource://gre/modules/UpdateUtils.jsm"],
   ["Weave", "resource://services-sync/main.js"],
   ["fxAccounts", "resource://gre/modules/FxAccounts.jsm"],
@@ -989,7 +988,6 @@ var gBrowserInit = {
     let mm = window.getGroupMessageManager("browsers");
     mm.loadFrameScript("chrome://browser/content/tab-content.js", true);
     mm.loadFrameScript("chrome://browser/content/content.js", true);
-    mm.loadFrameScript("chrome://browser/content/content-UITour.js", true);
     mm.loadFrameScript("chrome://global/content/manifestMessages.js", true);
 
     // initialize observers and listeners
@@ -4481,7 +4479,6 @@ var XULBrowserWindow = {
 
       gIdentityHandler.onLocationChange();
 
-      UITour.onLocationChange(location);
 
       gTabletModePageCounter.inc();
 
diff --git a/browser/base/content/browser.xul b/browser/base/content/browser.xul
index be4895a247..a11b525a3a 100644
--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -232,42 +232,6 @@
       </hbox>
     </panel>
 
-    <!-- UI tour experience -->
-    <panel id="UITourTooltip"
-           type="arrow"
-           hidden="true"
-           noautofocus="true"
-           noautohide="true"
-           align="start"
-           orient="vertical"
-           role="alert">
-     <vbox>
-      <hbox id="UITourTooltipBody">
-        <image id="UITourTooltipIcon"/>
-        <vbox flex="1">
-          <hbox id="UITourTooltipTitleContainer">
-            <label id="UITourTooltipTitle" flex="1"/>
-            <toolbarbutton id="UITourTooltipClose" class="close-icon"
-                           tooltiptext="&uiTour.infoPanel.close;"/>
-          </hbox>
-          <description id="UITourTooltipDescription" flex="1"/>
-        </vbox>
-      </hbox>
-      <hbox id="UITourTooltipButtons" flex="1" align="center"/>
-     </vbox>
-    </panel>
-    <!-- type="default" forces frames to be created so that the panel's size can be determined -->
-    <panel id="UITourHighlightContainer"
-           type="default"
-           hidden="true"
-           noautofocus="true"
-           noautohide="true"
-           flip="none"
-           consumeoutsideclicks="false"
-           mousethrough="always">
-      <box id="UITourHighlight"></box>
-    </panel>
-
     <menupopup id="toolbar-context-menu"
                onpopupshowing="onViewToolbarsPopupShowing(event, document.getElementById('viewToolbarsMenuSeparator'));">
       <menuitem oncommand="gCustomizeMode.addToPanel(document.popupNode)"
diff --git a/browser/base/content/utilityOverlay.js b/browser/base/content/utilityOverlay.js
index 4ea6d8f900..38ca82f554 100644
--- a/browser/base/content/utilityOverlay.js
+++ b/browser/base/content/utilityOverlay.js
@@ -809,13 +809,6 @@ function openFeedbackPage()
   openUILinkIn(url, "tab");
 }
 
-function openTourPage()
-{
-  let scope = {}
-  Components.utils.import("resource:///modules/UITour.jsm", scope);
-  openUILinkIn(scope.UITour.url, "tab");
-}
-
 function buildHelpMenu()
 {
   // Enable/disable the "Report Web Forgery" menu item.
diff --git a/browser/components/customizableui/CustomizeMode.jsm b/browser/components/customizableui/CustomizeMode.jsm
index 49868cdbd4..e63e25b0aa 100644
--- a/browser/components/customizableui/CustomizeMode.jsm
+++ b/browser/components/customizableui/CustomizeMode.jsm
@@ -90,7 +90,6 @@ function CustomizeMode(aWindow) {
   // to the user when in customizing mode.
   this.visiblePalette = this.document.getElementById(kPaletteId);
   this.paletteEmptyNotice = this.document.getElementById("customization-empty");
-  this.tipPanel = this.document.getElementById("customization-tipPanel");
   if (Services.prefs.getCharPref("general.skins.selectedSkin") != "classic/1.0") {
     let lwthemeButton = this.document.getElementById("customization-lwtheme-button");
     lwthemeButton.setAttribute("hidden", "true");
@@ -355,7 +354,6 @@ CustomizeMode.prototype = {
       this._updateEmptyPaletteNotice();
 
       this._updateLWThemeButtonIcon();
-      this.maybeShowTip(panelHolder);
 
       this._handler.isEnteringCustomizeMode = false;
       panelContents.removeAttribute("customize-transitioning");
@@ -400,8 +398,6 @@ CustomizeMode.prototype = {
       return;
     }
 
-    this.hideTip();
-
     this._handler.isExitingCustomizeMode = true;
 
     if (this._enableOutlinesTimeout) {
@@ -675,46 +671,6 @@ CustomizeMode.prototype = {
     return "url(\"" + aData.headerURL.replace(/"/g, '\\"') + "\")";
   },
 
-  maybeShowTip: function(aAnchor) {
-    let shown = false;
-    const kShownPref = "browser.customizemode.tip0.shown";
-    try {
-      shown = Services.prefs.getBoolPref(kShownPref);
-    } catch (ex) {}
-    if (shown)
-      return;
-
-    let anchorNode = aAnchor || this.document.getElementById("customization-panelHolder");
-    let messageNode = this.tipPanel.querySelector(".customization-tipPanel-contentMessage");
-    if (!messageNode.childElementCount) {
-      // Put the tip contents in the popup.
-      let bundle = this.document.getElementById("bundle_browser");
-      const kLabelClass = "customization-tipPanel-link";
-      messageNode.innerHTML = bundle.getFormattedString("customizeTips.tip0", [
-        "<label class=\"customization-tipPanel-em\" value=\"" +
-          bundle.getString("customizeTips.tip0.hint") + "\"/>",
-        this.document.getElementById("bundle_brand").getString("brandShortName"),
-        "<label class=\"" + kLabelClass + " text-link\" value=\"" +
-        bundle.getString("customizeTips.tip0.learnMore") + "\"/>"
-      ]);
-
-      messageNode.querySelector("." + kLabelClass).addEventListener("click", () => {
-        let url = Services.urlFormatter.formatURLPref("browser.customizemode.tip0.learnMoreUrl");
-        let browser = this.browser;
-        browser.selectedTab = browser.addTab(url);
-        this.hideTip();
-      });
-    }
-
-    this.tipPanel.hidden = false;
-    this.tipPanel.openPopup(anchorNode);
-    Services.prefs.setBoolPref(kShownPref, true);
-  },
-
-  hideTip: function() {
-    this.tipPanel.hidePopup();
-  },
-
   _getCustomizableChildForNode: function(aNode) {
     // NB: adjusted from _getCustomizableParent to keep that method fast
     // (it's used during drags), and avoid multiple DOM loops
diff --git a/browser/components/customizableui/content/panelUI.inc.xul b/browser/components/customizableui/content/panelUI.inc.xul
index 077d9c0149..e389b14bfb 100644
--- a/browser/components/customizableui/content/panelUI.inc.xul
+++ b/browser/components/customizableui/content/panelUI.inc.xul
@@ -367,25 +367,6 @@
   </vbox>
 </panel>
 
-<panel id="customization-tipPanel"
-       type="arrow"
-       flip="none"
-       side="left"
-       position="leftcenter topright"
-       noautohide="true"
-       hidden="true">
-  <hbox class="customization-tipPanel-wrapper">
-    <vbox class="customization-tipPanel-infoBox"/>
-    <vbox class="customization-tipPanel-content" flex="1">
-      <description class="customization-tipPanel-contentMessage"/>
-      <image class="customization-tipPanel-contentImage"/>
-    </vbox>
-    <vbox pack="start" align="end" class="customization-tipPanel-closeBox">
-      <toolbarbutton oncommand="gCustomizeMode.hideTip()" class="close-icon"/>
-    </vbox>
-  </hbox>
-</panel>
-
 <panel id="panic-button-success-notification"
        type="arrow"
        position="bottomcenter topright"
diff --git a/browser/components/moz.build b/browser/components/moz.build
index a495802009..07e79bc363 100644
--- a/browser/components/moz.build
+++ b/browser/components/moz.build
@@ -21,7 +21,6 @@ DIRS += [
     'shell',
     'selfsupport',
     'syncedtabs',
-    'uitour',
     'translation',
 ]
 
diff --git a/browser/components/nsBrowserGlue.js b/browser/components/nsBrowserGlue.js
index 448bb910dc..db85e85f2d 100644
--- a/browser/components/nsBrowserGlue.js
+++ b/browser/components/nsBrowserGlue.js
@@ -62,7 +62,6 @@ XPCOMUtils.defineLazyServiceGetter(this, "AlertsService", "@mozilla.org/alerts-s
   ["SimpleServiceDiscovery", "resource://gre/modules/SimpleServiceDiscovery.jsm"],
   ["TabCrashHandler", "resource:///modules/ContentCrashHandlers.jsm"],
   ["Task", "resource://gre/modules/Task.jsm"],
-  ["UITour", "resource:///modules/UITour.jsm"],
   ["URLBarZoom", "resource:///modules/URLBarZoom.jsm"],
   ["UserAgentOverrides", "resource://gre/modules/UserAgentOverrides.jsm"],
   ["WebChannel", "resource://gre/modules/WebChannel.jsm"],
@@ -2847,12 +2846,3 @@ var E10SAccessibilityCheck = {
 
 var components = [BrowserGlue, ContentPermissionPrompt];
 this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);
-
-
-// Listen for UITour messages.
-// Do it here instead of the UITour module itself so that the UITour module is lazy loaded
-// when the first message is received.
-var globalMM = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
-globalMM.addMessageListener("UITour:onPageEvent", function(aMessage) {
-  UITour.onPageEvent(aMessage, aMessage.data);
-});
diff --git a/browser/components/uitour/UITour-lib.js b/browser/components/uitour/UITour-lib.js
deleted file mode 100644
index 7fe8201857..0000000000
--- a/browser/components/uitour/UITour-lib.js
+++ /dev/null
@@ -1,331 +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/. */
-
-// create namespace
-if (typeof Mozilla == 'undefined') {
-  var Mozilla = {};
-}
-
-(function($) {
-  'use strict';
-
-  // create namespace
-  if (typeof Mozilla.UITour == 'undefined') {
-    Mozilla.UITour = {};
-  }
-
-  var themeIntervalId = null;
-  function _stopCyclingThemes() {
-    if (themeIntervalId) {
-      clearInterval(themeIntervalId);
-      themeIntervalId = null;
-    }
-  }
-
-  function _sendEvent(action, data) {
-    var event = new CustomEvent('mozUITour', {
-      bubbles: true,
-      detail: {
-	action: action,
-	data: data || {}
-      }
-    });
-
-    document.dispatchEvent(event);
-  }
-
-  function _generateCallbackID() {
-    return Math.random().toString(36).replace(/[^a-z]+/g, '');
-  }
-
-  function _waitForCallback(callback) {
-    var id = _generateCallbackID();
-
-    function listener(event) {
-      if (typeof event.detail != 'object')
-	return;
-      if (event.detail.callbackID != id)
-	return;
-
-      document.removeEventListener('mozUITourResponse', listener);
-      callback(event.detail.data);
-    }
-    document.addEventListener('mozUITourResponse', listener);
-
-    return id;
-  }
-
-  var notificationListener = null;
-  function _notificationListener(event) {
-    if (typeof event.detail != 'object')
-      return;
-    if (typeof notificationListener != 'function')
-      return;
-
-    notificationListener(event.detail.event, event.detail.params);
-  }
-
-  Mozilla.UITour.DEFAULT_THEME_CYCLE_DELAY = 10 * 1000;
-
-  Mozilla.UITour.CONFIGNAME_SYNC = 'sync';
-  Mozilla.UITour.CONFIGNAME_AVAILABLETARGETS = 'availableTargets';
-
-  Mozilla.UITour.ping = function(callback) {
-    var data = {};
-    if (callback) {
-      data.callbackID = _waitForCallback(callback);
-    }
-    _sendEvent('ping', data);
-  };
-
-  Mozilla.UITour.observe = function(listener, callback) {
-    notificationListener = listener;
-
-    if (listener) {
-      document.addEventListener('mozUITourNotification',
-                                _notificationListener);
-      Mozilla.UITour.ping(callback);
-    } else {
-      document.removeEventListener('mozUITourNotification',
-                                   _notificationListener);
-    }
-  };
-
-  Mozilla.UITour.registerPageID = function(pageID) {
-    _sendEvent('registerPageID', {
-      pageID: pageID
-    });
-  };
-
-  Mozilla.UITour.showHeartbeat = function(message, thankyouMessage, flowId, engagementURL,
-					  learnMoreLabel, learnMoreURL, options) {
-    var args = {
-      message: message,
-      thankyouMessage: thankyouMessage,
-      flowId: flowId,
-      engagementURL: engagementURL,
-      learnMoreLabel: learnMoreLabel,
-      learnMoreURL: learnMoreURL,
-    };
-
-    if (options) {
-      for (var option in options) {
-	if (!options.hasOwnProperty(option)) {
-	  continue;
-	}
-	args[option] = options[option];
-      }
-    }
-
-    _sendEvent('showHeartbeat', args);
-  };
-
-  Mozilla.UITour.showHighlight = function(target, effect) {
-    _sendEvent('showHighlight', {
-      target: target,
-      effect: effect
-    });
-  };
-
-  Mozilla.UITour.hideHighlight = function() {
-    _sendEvent('hideHighlight');
-  };
-
-  Mozilla.UITour.showInfo = function(target, title, text, icon, buttons, options) {
-    var buttonData = [];
-    if (Array.isArray(buttons)) {
-      for (var i = 0; i < buttons.length; i++) {
-	buttonData.push({
-	  label: buttons[i].label,
-	  icon: buttons[i].icon,
-	  style: buttons[i].style,
-	  callbackID: _waitForCallback(buttons[i].callback)
-	});
-      }
-    }
-
-    var closeButtonCallbackID, targetCallbackID;
-    if (options && options.closeButtonCallback)
-      closeButtonCallbackID = _waitForCallback(options.closeButtonCallback);
-    if (options && options.targetCallback)
-      targetCallbackID = _waitForCallback(options.targetCallback);
-
-    _sendEvent('showInfo', {
-      target: target,
-      title: title,
-      text: text,
-      icon: icon,
-      buttons: buttonData,
-      closeButtonCallbackID: closeButtonCallbackID,
-      targetCallbackID: targetCallbackID
-    });
-  };
-
-  Mozilla.UITour.hideInfo = function() {
-    _sendEvent('hideInfo');
-  };
-
-  Mozilla.UITour.previewTheme = function(theme) {
-    _stopCyclingThemes();
-
-    _sendEvent('previewTheme', {
-      theme: JSON.stringify(theme)
-    });
-  };
-
-  Mozilla.UITour.resetTheme = function() {
-    _stopCyclingThemes();
-
-    _sendEvent('resetTheme');
-  };
-
-  Mozilla.UITour.cycleThemes = function(themes, delay, callback) {
-    _stopCyclingThemes();
-
-    if (!delay) {
-      delay = Mozilla.UITour.DEFAULT_THEME_CYCLE_DELAY;
-    }
-
-    function nextTheme() {
-      var theme = themes.shift();
-      themes.push(theme);
-
-      _sendEvent('previewTheme', {
-	theme: JSON.stringify(theme),
-	state: true
-      });
-
-      callback(theme);
-    }
-
-    themeIntervalId = setInterval(nextTheme, delay);
-    nextTheme();
-  };
-
-  Mozilla.UITour.showMenu = function(name, callback) {
-    var showCallbackID;
-    if (callback)
-      showCallbackID = _waitForCallback(callback);
-
-    _sendEvent('showMenu', {
-      name: name,
-      showCallbackID: showCallbackID,
-    });
-  };
-
-  Mozilla.UITour.hideMenu = function(name) {
-    _sendEvent('hideMenu', {
-      name: name
-    });
-  };
-
-  Mozilla.UITour.showNewTab = function() {
-    _sendEvent('showNewTab');
-  };
-
-  Mozilla.UITour.getConfiguration = function(configName, callback) {
-    _sendEvent('getConfiguration', {
-      callbackID: _waitForCallback(callback),
-      configuration: configName,
-    });
-  };
-
-  Mozilla.UITour.setConfiguration = function(configName, configValue) {
-    _sendEvent('setConfiguration', {
-      configuration: configName,
-      value: configValue,
-    });
-  };
-
-  /**
-   * Request the browser open the Firefox Accounts page.
-   *
-   * @param {Object} extraURLCampaignParams - An object containing additional
-   * paramaters for the URL opened by the browser for reasons of promotional
-   * campaign tracking. Each attribute of the object must have a name that
-   * is a string, begins with "utm_" and contains only only alphanumeric
-   * characters, dashes or underscores. The values may be any string and will
-   * automatically be encoded.
-   */
-  Mozilla.UITour.showFirefoxAccounts = function(extraURLCampaignParams) {
-    _sendEvent('showFirefoxAccounts', {
-      extraURLCampaignParams: JSON.stringify(extraURLCampaignParams),
-    });
-  };
-
-  Mozilla.UITour.resetFirefox = function() {
-    _sendEvent('resetFirefox');
-  };
-
-  Mozilla.UITour.addNavBarWidget= function(name, callback) {
-    _sendEvent('addNavBarWidget', {
-      name: name,
-      callbackID: _waitForCallback(callback),
-    });
-  };
-
-  Mozilla.UITour.setDefaultSearchEngine = function(identifier) {
-    _sendEvent('setDefaultSearchEngine', {
-      identifier: identifier,
-    });
-  };
-
-  Mozilla.UITour.setTreatmentTag = function(name, value) {
-    _sendEvent('setTreatmentTag', {
-      name: name,
-      value: value
-    });
-  };
-
-  Mozilla.UITour.getTreatmentTag = function(name, callback) {
-    _sendEvent('getTreatmentTag', {
-      name: name,
-      callbackID: _waitForCallback(callback)
-    });
-  };
-
-  Mozilla.UITour.setSearchTerm = function(term) {
-    _sendEvent('setSearchTerm', {
-      term: term
-    });
-  };
-
-  Mozilla.UITour.openSearchPanel = function(callback) {
-    _sendEvent('openSearchPanel', {
-      callbackID: _waitForCallback(callback)
-    });
-  };
-
-  Mozilla.UITour.forceShowReaderIcon = function() {
-    _sendEvent('forceShowReaderIcon');
-  };
-
-  Mozilla.UITour.toggleReaderMode = function() {
-    _sendEvent('toggleReaderMode');
-  };
-
-  Mozilla.UITour.openPreferences = function(pane) {
-    _sendEvent('openPreferences', {
-      pane: pane
-    });
-  };
-
-  /**
-   * Closes the tab where this code is running. As usual, if the tab is in the
-   * foreground, the tab that was displayed before is selected.
-   *
-   * The last tab in the current window will never be closed, in which case
-   * this call will have no effect. The calling code is expected to take an
-   * action after a small timeout in order to handle this case, for example by
-   * displaying a goodbye message or a button to restart the tour.
-   */
-  Mozilla.UITour.closeTab = function() {
-    _sendEvent('closeTab');
-  };
-})();
-
-// Make this library Require-able.
-if (typeof module !== 'undefined' && module.exports) {
-  module.exports = Mozilla.UITour;
-}
diff --git a/browser/components/uitour/UITour.jsm b/browser/components/uitour/UITour.jsm
deleted file mode 100644
index b927159630..0000000000
--- a/browser/components/uitour/UITour.jsm
+++ /dev/null
@@ -1,2111 +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 = ["UITour"];
-
-const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
-
-Cu.import("resource://gre/modules/AppConstants.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Preferences.jsm");
-Cu.import("resource://gre/modules/Promise.jsm");
-Cu.import("resource:///modules/RecentWindow.jsm");
-Cu.import("resource://gre/modules/Task.jsm");
-Cu.import("resource://gre/modules/TelemetryController.jsm");
-Cu.import("resource://gre/modules/Timer.jsm");
-
-Cu.importGlobalProperties(["URL"]);
-
-XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeManager",
-  "resource://gre/modules/LightweightThemeManager.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "ResetProfile",
-  "resource://gre/modules/ResetProfile.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
-  "resource:///modules/CustomizableUI.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
-  "resource://gre/modules/UITelemetry.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "BrowserUITelemetry",
-  "resource:///modules/BrowserUITelemetry.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
-  "resource://gre/modules/PrivateBrowsingUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "ReaderMode",
-  "resource://gre/modules/ReaderMode.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "ReaderParent",
-  "resource:///modules/ReaderParent.jsm");
-
-// See LOG_LEVELS in Console.jsm. Common examples: "All", "Info", "Warn", & "Error".
-const PREF_LOG_LEVEL      = "browser.uitour.loglevel";
-const PREF_SEENPAGEIDS    = "browser.uitour.seenPageIDs";
-const PREF_READERVIEW_TRIGGER = "browser.uitour.readerViewTrigger";
-const PREF_SURVEY_DURATION = "browser.uitour.surveyDuration";
-
-const BACKGROUND_PAGE_ACTIONS_ALLOWED = new Set([
-  "forceShowReaderIcon",
-  "getConfiguration",
-  "getTreatmentTag",
-  "hideHighlight",
-  "hideInfo",
-  "hideMenu",
-  "ping",
-  "registerPageID",
-  "setConfiguration",
-  "setTreatmentTag",
-]);
-const MAX_BUTTONS         = 4;
-
-const BUCKET_NAME         = "UITour";
-const BUCKET_TIMESTEPS    = [
-  1 * 60 * 1000, // Until 1 minute after tab is closed/inactive.
-  3 * 60 * 1000, // Until 3 minutes after tab is closed/inactive.
-  10 * 60 * 1000, // Until 10 minutes after tab is closed/inactive.
-  60 * 60 * 1000, // Until 1 hour after tab is closed/inactive.
-];
-
-// Time after which seen Page IDs expire.
-const SEENPAGEID_EXPIRY  = 8 * 7 * 24 * 60 * 60 * 1000; // 8 weeks.
-
-// Prefix for any target matching a search engine.
-const TARGET_SEARCHENGINE_PREFIX = "searchEngine-";
-
-// Create a new instance of the ConsoleAPI so we can control the maxLogLevel with a pref.
-XPCOMUtils.defineLazyGetter(this, "log", () => {
-  let ConsoleAPI = Cu.import("resource://gre/modules/Console.jsm", {}).ConsoleAPI;
-  let consoleOptions = {
-    maxLogLevelPref: PREF_LOG_LEVEL,
-    prefix: "UITour",
-  };
-  return new ConsoleAPI(consoleOptions);
-});
-
-this.UITour = {
-  url: null,
-  seenPageIDs: null,
-  // This map is not persisted and is used for
-  // building the content source of a potential tour.
-  pageIDsForSession: new Map(),
-  pageIDSourceBrowsers: new WeakMap(),
-  /* Map from browser chrome windows to a Set of <browser>s in which a tour is open (both visible and hidden) */
-  tourBrowsersByWindow: new WeakMap(),
-  appMenuOpenForAnnotation: new Set(),
-  availableTargetsCache: new WeakMap(),
-  clearAvailableTargetsCache() {
-    this.availableTargetsCache = new WeakMap();
-  },
-
-  _annotationPanelMutationObservers: new WeakMap(),
-
-  highlightEffects: ["random", "wobble", "zoom", "color"],
-  targets: new Map([
-    ["accountStatus", {
-      query: (aDocument) => {
-        // If the user is logged in, use the avatar element.
-        let fxAFooter = aDocument.getElementById("PanelUI-footer-fxa");
-        if (fxAFooter.getAttribute("fxastatus")) {
-          return aDocument.getElementById("PanelUI-fxa-avatar");
-        }
-
-        // Otherwise use the sync setup icon.
-        let statusButton = aDocument.getElementById("PanelUI-fxa-label");
-        return aDocument.getAnonymousElementByAttribute(statusButton,
-                                                        "class",
-                                                        "toolbarbutton-icon");
-      },
-      // This is a fake widgetName starting with the "PanelUI-" prefix so we know
-      // to automatically open the appMenu when annotating this target.
-      widgetName: "PanelUI-fxa-label",
-    }],
-    ["addons",      {query: "#add-ons-button"}],
-    ["appMenu",     {
-      addTargetListener: (aDocument, aCallback) => {
-        let panelPopup = aDocument.getElementById("PanelUI-popup");
-        panelPopup.addEventListener("popupshown", aCallback);
-      },
-      query: "#PanelUI-button",
-      removeTargetListener: (aDocument, aCallback) => {
-        let panelPopup = aDocument.getElementById("PanelUI-popup");
-        panelPopup.removeEventListener("popupshown", aCallback);
-      },
-    }],
-    ["backForward", {
-      query: "#back-button",
-      widgetName: "urlbar-container",
-    }],
-    ["bookmarks",   {query: "#bookmarks-menu-button"}],
-    ["controlCenter-trackingUnblock", controlCenterTrackingToggleTarget(true)],
-    ["controlCenter-trackingBlock", controlCenterTrackingToggleTarget(false)],
-    ["customize",   {
-      query: (aDocument) => {
-        let customizeButton = aDocument.getElementById("PanelUI-customize");
-        return aDocument.getAnonymousElementByAttribute(customizeButton,
-                                                        "class",
-                                                        "toolbarbutton-icon");
-      },
-      widgetName: "PanelUI-customize",
-    }],
-    ["devtools",    {query: "#developer-button"}],
-    ["help",        {query: "#PanelUI-help"}],
-    ["home",        {query: "#home-button"}],
-    ["forget", {
-      allowAdd: true,
-      query: "#panic-button",
-      widgetName: "panic-button",
-    }],
-    ["pocket", {
-      allowAdd: true,
-      query: "#pocket-button",
-      widgetName: "pocket-button",
-    }],
-    ["privateWindow",  {query: "#privatebrowsing-button"}],
-    ["quit",        {query: "#PanelUI-quit"}],
-    ["readerMode-urlBar", {query: "#reader-mode-button"}],
-    ["search",      {
-      infoPanelOffsetX: 18,
-      infoPanelPosition: "after_start",
-      query: "#searchbar",
-      widgetName: "search-container",
-    }],
-    ["searchIcon", {
-      query: (aDocument) => {
-        let searchbar = aDocument.getElementById("searchbar");
-        return aDocument.getAnonymousElementByAttribute(searchbar,
-                                                        "anonid",
-                                                        "searchbar-search-button");
-      },
-      widgetName: "search-container",
-    }],
-    ["searchPrefsLink", {
-      query: (aDocument) => {
-        let element = null;
-        let popup = aDocument.getElementById("PopupSearchAutoComplete");
-        if (popup.state != "open")
-          return null;
-        element = aDocument.getAnonymousElementByAttribute(popup,
-                                                           "anonid",
-                                                           "search-settings");
-        if (!element || !UITour.isElementVisible(element)) {
-          return null;
-        }
-        return element;
-      },
-    }],
-    ["selectedTabIcon", {
-      query: (aDocument) => {
-        let selectedtab = aDocument.defaultView.gBrowser.selectedTab;
-        let element = aDocument.getAnonymousElementByAttribute(selectedtab,
-                                                               "anonid",
-                                                               "tab-icon-image");
-        if (!element || !UITour.isElementVisible(element)) {
-          return null;
-        }
-        return element;
-      },
-    }],
-    ["trackingProtection", {
-      query: "#tracking-protection-icon",
-    }],
-    ["urlbar",      {
-      query: "#urlbar",
-      widgetName: "urlbar-container",
-    }],
-    ["webide",      {query: "#webide-button"}],
-  ]),
-
-  init: function() {
-    log.debug("Initializing UITour");
-    // Lazy getter is initialized here so it can be replicated any time
-    // in a test.
-    delete this.seenPageIDs;
-    Object.defineProperty(this, "seenPageIDs", {
-      get: this.restoreSeenPageIDs.bind(this),
-      configurable: true,
-    });
-
-    delete this.url;
-    XPCOMUtils.defineLazyGetter(this, "url", function () {
-      return Services.urlFormatter.formatURLPref("browser.uitour.url");
-    });
-
-    // Clear the availableTargetsCache on widget changes.
-    let listenerMethods = [
-      "onWidgetAdded",
-      "onWidgetMoved",
-      "onWidgetRemoved",
-      "onWidgetReset",
-      "onAreaReset",
-    ];
-    CustomizableUI.addListener(listenerMethods.reduce((listener, method) => {
-      listener[method] = () => this.clearAvailableTargetsCache();
-      return listener;
-    }, {}));
-  },
-
-  restoreSeenPageIDs: function() {
-    delete this.seenPageIDs;
-
-    if (UITelemetry.enabled) {
-      let dateThreshold = Date.now() - SEENPAGEID_EXPIRY;
-
-      try {
-        let data = Services.prefs.getCharPref(PREF_SEENPAGEIDS);
-        data = new Map(JSON.parse(data));
-
-        for (let [pageID, details] of data) {
-
-          if (typeof pageID != "string" ||
-              typeof details != "object" ||
-              typeof details.lastSeen != "number" ||
-              details.lastSeen < dateThreshold) {
-
-            data.delete(pageID);
-          }
-        }
-
-        this.seenPageIDs = data;
-      } catch (e) {}
-    }
-
-    if (!this.seenPageIDs)
-      this.seenPageIDs = new Map();
-
-    this.persistSeenIDs();
-
-    return this.seenPageIDs;
-  },
-
-  addSeenPageID: function(aPageID) {
-    if (!UITelemetry.enabled)
-      return;
-
-    this.seenPageIDs.set(aPageID, {
-      lastSeen: Date.now(),
-    });
-
-    this.persistSeenIDs();
-  },
-
-  persistSeenIDs: function() {
-    if (this.seenPageIDs.size === 0) {
-      Services.prefs.clearUserPref(PREF_SEENPAGEIDS);
-      return;
-    }
-
-    Services.prefs.setCharPref(PREF_SEENPAGEIDS,
-                               JSON.stringify([...this.seenPageIDs]));
-  },
-
-  get _readerViewTriggerRegEx() {
-    delete this._readerViewTriggerRegEx;
-    let readerViewUITourTrigger = Services.prefs.getCharPref(PREF_READERVIEW_TRIGGER);
-    return this._readerViewTriggerRegEx = new RegExp(readerViewUITourTrigger, "i");
-  },
-
-  onLocationChange: function(aLocation) {
-    // The ReaderView tour page is expected to run in Reader View,
-    // which disables JavaScript on the page. To get around that, we
-    // automatically start a pre-defined tour on page load (for hysterical
-    // raisins the ReaderView tour is known as "readinglist")
-    let originalUrl = ReaderMode.getOriginalUrl(aLocation);
-    if (this._readerViewTriggerRegEx.test(originalUrl)) {
-      this.startSubTour("readinglist");
-    }
-  },
-
-  onPageEvent: function(aMessage, aEvent) {
-    let browser = aMessage.target;
-    let window = browser.ownerGlobal;
-
-    // Does the window have tabs? We need to make sure since windowless browsers do
-    // not have tabs.
-    if (!window.gBrowser) {
-      // When using windowless browsers we don't have a valid |window|. If that's the case,
-      // use the most recent window as a target for UITour functions (see Bug 1111022).
-      window = Services.wm.getMostRecentWindow("navigator:browser");
-    }
-
-    let messageManager = browser.messageManager;
-
-    log.debug("onPageEvent:", aEvent.detail, aMessage);
-
-    if (typeof aEvent.detail != "object") {
-      log.warn("Malformed event - detail not an object");
-      return false;
-    }
-
-    let action = aEvent.detail.action;
-    if (typeof action != "string" || !action) {
-      log.warn("Action not defined");
-      return false;
-    }
-
-    let data = aEvent.detail.data;
-    if (typeof data != "object") {
-      log.warn("Malformed event - data not an object");
-      return false;
-    }
-
-    if ((aEvent.pageVisibilityState == "hidden" ||
-         aEvent.pageVisibilityState == "unloaded") &&
-        !BACKGROUND_PAGE_ACTIONS_ALLOWED.has(action)) {
-      log.warn("Ignoring disallowed action from a hidden page:", action);
-      return false;
-    }
-
-    switch (action) {
-      case "registerPageID": {
-        if (typeof data.pageID != "string") {
-          log.warn("registerPageID: pageID must be a string");
-          break;
-        }
-
-        this.pageIDsForSession.set(data.pageID, {lastSeen: Date.now()});
-
-        // The rest is only relevant if Telemetry is enabled.
-        if (!UITelemetry.enabled) {
-          log.debug("registerPageID: Telemetry disabled, not doing anything");
-          break;
-        }
-
-        // We don't want to allow BrowserUITelemetry.BUCKET_SEPARATOR in the
-        // pageID, as it could make parsing the telemetry bucket name difficult.
-        if (data.pageID.includes(BrowserUITelemetry.BUCKET_SEPARATOR)) {
-          log.warn("registerPageID: Invalid page ID specified");
-          break;
-        }
-
-        this.addSeenPageID(data.pageID);
-        this.pageIDSourceBrowsers.set(browser, data.pageID);
-        this.setTelemetryBucket(data.pageID);
-
-        break;
-      }
-
-      case "showHeartbeat": {
-        // Validate the input parameters.
-        if (typeof data.message !== "string" || data.message === "") {
-          log.error("showHeartbeat: Invalid message specified.");
-          return false;
-        }
-
-        if (typeof data.thankyouMessage !== "string" || data.thankyouMessage === "") {
-          log.error("showHeartbeat: Invalid thank you message specified.");
-          return false;
-        }
-
-        if (typeof data.flowId !== "string" || data.flowId === "") {
-          log.error("showHeartbeat: Invalid flowId specified.");
-          return false;
-        }
-
-        if (data.engagementButtonLabel && typeof data.engagementButtonLabel != "string") {
-          log.error("showHeartbeat: Invalid engagementButtonLabel specified");
-          return false;
-        }
-
-        let heartbeatWindow = window;
-        if (data.privateWindowsOnly && !PrivateBrowsingUtils.isWindowPrivate(heartbeatWindow)) {
-          heartbeatWindow = RecentWindow.getMostRecentBrowserWindow({ private: true });
-          if (!heartbeatWindow) {
-            log.debug("showHeartbeat: No private window found");
-            return false;
-          }
-        }
-
-        // Finally show the Heartbeat UI.
-        this.showHeartbeat(heartbeatWindow, data);
-        break;
-      }
-
-      case "showHighlight": {
-        let targetPromise = this.getTarget(window, data.target);
-        targetPromise.then(target => {
-          if (!target.node) {
-            log.error("UITour: Target could not be resolved: " + data.target);
-            return;
-          }
-          let effect = undefined;
-          if (this.highlightEffects.indexOf(data.effect) !== -1) {
-            effect = data.effect;
-          }
-          this.showHighlight(window, target, effect);
-        }).catch(log.error);
-        break;
-      }
-
-      case "hideHighlight": {
-        this.hideHighlight(window);
-        break;
-      }
-
-      case "showInfo": {
-        let targetPromise = this.getTarget(window, data.target, true);
-        targetPromise.then(target => {
-          if (!target.node) {
-            log.error("UITour: Target could not be resolved: " + data.target);
-            return;
-          }
-
-          let iconURL = null;
-          if (typeof data.icon == "string")
-            iconURL = this.resolveURL(browser, data.icon);
-
-          let buttons = [];
-          if (Array.isArray(data.buttons) && data.buttons.length > 0) {
-            for (let buttonData of data.buttons) {
-              if (typeof buttonData == "object" &&
-                  typeof buttonData.label == "string" &&
-                  typeof buttonData.callbackID == "string") {
-                let callback = buttonData.callbackID;
-                let button = {
-                  label: buttonData.label,
-                  callback: event => {
-                    this.sendPageCallback(messageManager, callback);
-                  },
-                };
-
-                if (typeof buttonData.icon == "string")
-                  button.iconURL = this.resolveURL(browser, buttonData.icon);
-
-                if (typeof buttonData.style == "string")
-                  button.style = buttonData.style;
-
-                buttons.push(button);
-
-                if (buttons.length == MAX_BUTTONS) {
-                  log.warn("showInfo: Reached limit of allowed number of buttons");
-                  break;
-                }
-              }
-            }
-          }
-
-          let infoOptions = {};
-          if (typeof data.closeButtonCallbackID == "string") {
-            infoOptions.closeButtonCallback = () => {
-              this.sendPageCallback(messageManager, data.closeButtonCallbackID);
-            };
-          }
-          if (typeof data.targetCallbackID == "string") {
-            infoOptions.targetCallback = details => {
-              this.sendPageCallback(messageManager, data.targetCallbackID, details);
-            };
-          }
-
-          this.showInfo(window, target, data.title, data.text, iconURL, buttons, infoOptions);
-        }).catch(log.error);
-        break;
-      }
-
-      case "hideInfo": {
-        this.hideInfo(window);
-        break;
-      }
-
-      case "previewTheme": {
-        this.previewTheme(data.theme);
-        break;
-      }
-
-      case "resetTheme": {
-        this.resetTheme();
-        break;
-      }
-
-      case "showMenu": {
-        this.showMenu(window, data.name, () => {
-          if (typeof data.showCallbackID == "string")
-            this.sendPageCallback(messageManager, data.showCallbackID);
-        });
-        break;
-      }
-
-      case "hideMenu": {
-        this.hideMenu(window, data.name);
-        break;
-      }
-
-      case "showNewTab": {
-        this.showNewTab(window, browser);
-        break;
-      }
-
-      case "getConfiguration": {
-        if (typeof data.configuration != "string") {
-          log.warn("getConfiguration: No configuration option specified");
-          return false;
-        }
-
-        this.getConfiguration(messageManager, window, data.configuration, data.callbackID);
-        break;
-      }
-
-      case "setConfiguration": {
-        if (typeof data.configuration != "string") {
-          log.warn("setConfiguration: No configuration option specified");
-          return false;
-        }
-
-        this.setConfiguration(window, data.configuration, data.value);
-        break;
-      }
-
-      case "openPreferences": {
-        if (typeof data.pane != "string" && typeof data.pane != "undefined") {
-          log.warn("openPreferences: Invalid pane specified");
-          return false;
-        }
-
-        window.openPreferences(data.pane);
-        break;
-      }
-
-      case "showFirefoxAccounts": {
-        // 'signup' is the only action that makes sense currently, so we don't
-        // accept arbitrary actions just to be safe...
-        let p = new URLSearchParams("action=signup&entrypoint=uitour");
-        // Call our helper to validate extraURLCampaignParams and populate URLSearchParams
-        if (!this._populateCampaignParams(p, data.extraURLCampaignParams)) {
-          log.warn("showFirefoxAccounts: invalid campaign args specified");
-          return false;
-        }
-
-        // We want to replace the current tab.
-        browser.loadURI("about:accounts?" + p.toString());
-        break;
-      }
-
-      case "resetFirefox": {
-        // Open a reset profile dialog window.
-        if (ResetProfile.resetSupported()) {
-          ResetProfile.openConfirmationDialog(window);
-        }
-        break;
-      }
-
-      case "addNavBarWidget": {
-        // Add a widget to the toolbar
-        let targetPromise = this.getTarget(window, data.name);
-        targetPromise.then(target => {
-          this.addNavBarWidget(target, messageManager, data.callbackID);
-        }).catch(log.error);
-        break;
-      }
-
-      case "setDefaultSearchEngine": {
-        let enginePromise = this.selectSearchEngine(data.identifier);
-        enginePromise.catch(Cu.reportError);
-        break;
-      }
-
-      case "setTreatmentTag": {
-        let name = data.name;
-        let value = data.value;
-        let string = Cc["@mozilla.org/supports-string;1"].createInstance(Ci.nsISupportsString);
-        string.data = value;
-        Services.prefs.setComplexValue("browser.uitour.treatment." + name,
-                                       Ci.nsISupportsString, string);
-        // The notification is only meant to be used in tests.
-        UITourHealthReport.recordTreatmentTag(name, value)
-                          .then(() => this.notify("TreatmentTag:TelemetrySent"));
-        break;
-      }
-
-      case "getTreatmentTag": {
-        let name = data.name;
-        let value;
-        try {
-          value = Services.prefs.getComplexValue("browser.uitour.treatment." + name,
-                                                 Ci.nsISupportsString).data;
-        } catch (ex) {}
-        this.sendPageCallback(messageManager, data.callbackID, { value: value });
-        break;
-      }
-
-      case "setSearchTerm": {
-        let targetPromise = this.getTarget(window, "search");
-        targetPromise.then(target => {
-          let searchbar = target.node;
-          searchbar.value = data.term;
-          searchbar.updateGoButtonVisibility();
-        });
-        break;
-      }
-
-      case "openSearchPanel": {
-        let targetPromise = this.getTarget(window, "search");
-        targetPromise.then(target => {
-          let searchbar = target.node;
-
-          if (searchbar.textbox.open) {
-            this.sendPageCallback(messageManager, data.callbackID);
-          } else {
-            let onPopupShown = () => {
-              searchbar.textbox.popup.removeEventListener("popupshown", onPopupShown);
-              this.sendPageCallback(messageManager, data.callbackID);
-            };
-
-            searchbar.textbox.popup.addEventListener("popupshown", onPopupShown);
-            searchbar.openSuggestionsPanel();
-          }
-        }).then(null, Cu.reportError);
-        break;
-      }
-
-      case "ping": {
-        if (typeof data.callbackID == "string")
-          this.sendPageCallback(messageManager, data.callbackID);
-        break;
-      }
-
-      case "forceShowReaderIcon": {
-        ReaderParent.forceShowReaderIcon(browser);
-        break;
-      }
-
-      case "toggleReaderMode": {
-        let targetPromise = this.getTarget(window, "readerMode-urlBar");
-        targetPromise.then(target => {
-          ReaderParent.toggleReaderMode({target: target.node});
-        });
-        break;
-      }
-
-      case "closeTab": {
-        // Find the <tabbrowser> element of the <browser> for which the event
-        // was generated originally. If the browser where the UI tour is loaded
-        // is windowless, just ignore the request to close the tab. The request
-        // is also ignored if this is the only tab in the window.
-        let tabBrowser = browser.ownerGlobal.gBrowser;
-        if (tabBrowser && tabBrowser.browsers.length > 1) {
-          tabBrowser.removeTab(tabBrowser.getTabForBrowser(browser));
-        }
-        break;
-      }
-    }
-
-    this.initForBrowser(browser, window);
-
-    return true;
-  },
-
-  initForBrowser(aBrowser, window) {
-    let gBrowser = window.gBrowser;
-
-    if (gBrowser) {
-        gBrowser.tabContainer.addEventListener("TabSelect", this);
-    }
-
-    if (!this.tourBrowsersByWindow.has(window)) {
-      this.tourBrowsersByWindow.set(window, new Set());
-    }
-    this.tourBrowsersByWindow.get(window).add(aBrowser);
-
-    Services.obs.addObserver(this, "message-manager-close", false);
-
-    window.addEventListener("SSWindowClosing", this);
-  },
-
-  handleEvent: function(aEvent) {
-    log.debug("handleEvent: type =", aEvent.type, "event =", aEvent);
-    switch (aEvent.type) {
-      case "TabSelect": {
-        let window = aEvent.target.ownerGlobal;
-
-        // Teardown the browser of the tab we just switched away from.
-        if (aEvent.detail && aEvent.detail.previousTab) {
-          let previousTab = aEvent.detail.previousTab;
-          let openTourWindows = this.tourBrowsersByWindow.get(window);
-          if (openTourWindows.has(previousTab.linkedBrowser)) {
-            this.teardownTourForBrowser(window, previousTab.linkedBrowser, false);
-          }
-        }
-
-        break;
-      }
-
-      case "SSWindowClosing": {
-        let window = aEvent.target;
-        this.teardownTourForWindow(window);
-        break;
-      }
-    }
-  },
-
-  observe: function(aSubject, aTopic, aData) {
-    log.debug("observe: aTopic =", aTopic);
-    switch (aTopic) {
-      // The browser message manager is disconnected when the <browser> is
-      // destroyed and we want to teardown at that point.
-      case "message-manager-close": {
-        let winEnum = Services.wm.getEnumerator("navigator:browser");
-        while (winEnum.hasMoreElements()) {
-          let window = winEnum.getNext();
-          if (window.closed)
-            continue;
-
-          let tourBrowsers = this.tourBrowsersByWindow.get(window);
-          if (!tourBrowsers)
-            continue;
-
-          for (let browser of tourBrowsers) {
-            let messageManager = browser.messageManager;
-            if (aSubject != messageManager) {
-              continue;
-            }
-
-            this.teardownTourForBrowser(window, browser, true);
-            return;
-          }
-        }
-        break;
-      }
-    }
-  },
-
-  // Given a string that is a JSONified represenation of an object with
-  // additional utm_* URL params that should be appended, validate and append
-  // them to the passed URLSearchParams object. Returns true if the params
-  // were validated and appended, and false if the request should be ignored.
-  _populateCampaignParams: function(urlSearchParams, extraURLCampaignParams) {
-    // We are extra paranoid about what params we allow to be appended.
-    if (typeof extraURLCampaignParams == "undefined") {
-      // no params, so it's all good.
-      return true;
-    }
-    if (typeof extraURLCampaignParams != "string") {
-      log.warn("_populateCampaignParams: extraURLCampaignParams is not a string");
-      return false;
-    }
-    let campaignParams;
-    try {
-      if (extraURLCampaignParams) {
-        campaignParams = JSON.parse(extraURLCampaignParams);
-        if (typeof campaignParams != "object") {
-          log.warn("_populateCampaignParams: extraURLCampaignParams is not a stringified object");
-          return false;
-        }
-      }
-    } catch (ex) {
-      log.warn("_populateCampaignParams: extraURLCampaignParams is not a JSON object");
-      return false;
-    }
-    if (campaignParams) {
-      // The regex that the name of each param must match - there's no
-      // character restriction on the value - they will be escaped as necessary.
-      let reSimpleString = /^[-_a-zA-Z0-9]*$/;
-      for (let name in campaignParams) {
-        let value = campaignParams[name];
-        if (typeof name != "string" || typeof value != "string" ||
-            !name.startsWith("utm_") ||
-            value.length == 0 ||
-            !reSimpleString.test(name)) {
-          log.warn("_populateCampaignParams: invalid campaign param specified");
-          return false;
-        }
-        urlSearchParams.append(name, value);
-      }
-    }
-    return true;
-  },
-
-  setTelemetryBucket: function(aPageID) {
-    let bucket = BUCKET_NAME + BrowserUITelemetry.BUCKET_SEPARATOR + aPageID;
-    BrowserUITelemetry.setBucket(bucket);
-  },
-
-  setExpiringTelemetryBucket: function(aPageID, aType) {
-    let bucket = BUCKET_NAME + BrowserUITelemetry.BUCKET_SEPARATOR + aPageID +
-                 BrowserUITelemetry.BUCKET_SEPARATOR + aType;
-
-    BrowserUITelemetry.setExpiringBucket(bucket,
-                                         BUCKET_TIMESTEPS);
-  },
-
-  // This is registered with UITelemetry by BrowserUITelemetry, so that UITour
-  // can remain lazy-loaded on-demand.
-  getTelemetry: function() {
-    return {
-      seenPageIDs: [...this.seenPageIDs.keys()],
-    };
-  },
-
-  /**
-   * Tear down a tour from a tab e.g. upon switching/closing tabs.
-   */
-  teardownTourForBrowser: function(aWindow, aBrowser, aTourPageClosing = false) {
-    log.debug("teardownTourForBrowser: aBrowser = ", aBrowser, aTourPageClosing);
-
-    if (this.pageIDSourceBrowsers.has(aBrowser)) {
-      let pageID = this.pageIDSourceBrowsers.get(aBrowser);
-      this.setExpiringTelemetryBucket(pageID, aTourPageClosing ? "closed" : "inactive");
-    }
-
-    let openTourBrowsers = this.tourBrowsersByWindow.get(aWindow);
-    if (aTourPageClosing && openTourBrowsers) {
-      openTourBrowsers.delete(aBrowser);
-    }
-
-    this.hideHighlight(aWindow);
-    this.hideInfo(aWindow);
-    // Ensure the menu panel is hidden before calling recreatePopup so popup events occur.
-    this.hideMenu(aWindow, "appMenu");
-    this.hideMenu(aWindow, "controlCenter");
-
-    // Clean up panel listeners after calling hideMenu above.
-    aWindow.PanelUI.panel.removeEventListener("popuphiding", this.hideAppMenuAnnotations);
-    aWindow.PanelUI.panel.removeEventListener("ViewShowing", this.hideAppMenuAnnotations);
-    aWindow.PanelUI.panel.removeEventListener("popuphidden", this.onPanelHidden);
-    let controlCenterPanel = aWindow.gIdentityHandler._identityPopup;
-    controlCenterPanel.removeEventListener("popuphidden", this.onPanelHidden);
-    controlCenterPanel.removeEventListener("popuphiding", this.hideControlCenterAnnotations);
-
-    this.resetTheme();
-
-    // If there are no more tour tabs left in the window, teardown the tour for the whole window.
-    if (!openTourBrowsers || openTourBrowsers.size == 0) {
-      this.teardownTourForWindow(aWindow);
-    }
-  },
-
-  /**
-   * Tear down all tours for a ChromeWindow.
-   */
-  teardownTourForWindow: function(aWindow) {
-    log.debug("teardownTourForWindow");
-    aWindow.gBrowser.tabContainer.removeEventListener("TabSelect", this);
-    aWindow.removeEventListener("SSWindowClosing", this);
-
-    let openTourBrowsers = this.tourBrowsersByWindow.get(aWindow);
-    if (openTourBrowsers) {
-      for (let browser of openTourBrowsers) {
-        if (this.pageIDSourceBrowsers.has(browser)) {
-          let pageID = this.pageIDSourceBrowsers.get(browser);
-          this.setExpiringTelemetryBucket(pageID, "closed");
-        }
-      }
-    }
-
-    this.tourBrowsersByWindow.delete(aWindow);
-  },
-
-  // This function is copied to UITourListener.
-  isSafeScheme: function(aURI) {
-    let allowedSchemes = new Set(["https", "about"]);
-    if (!Services.prefs.getBoolPref("browser.uitour.requireSecure"))
-      allowedSchemes.add("http");
-
-    if (!allowedSchemes.has(aURI.scheme)) {
-      log.error("Unsafe scheme:", aURI.scheme);
-      return false;
-    }
-
-    return true;
-  },
-
-  resolveURL: function(aBrowser, aURL) {
-    try {
-      let uri = Services.io.newURI(aURL, null, aBrowser.currentURI);
-
-      if (!this.isSafeScheme(uri))
-        return null;
-
-      return uri.spec;
-    } catch (e) {}
-
-    return null;
-  },
-
-  sendPageCallback: function(aMessageManager, aCallbackID, aData = {}) {
-    let detail = {data: aData, callbackID: aCallbackID};
-    log.debug("sendPageCallback", detail);
-    aMessageManager.sendAsyncMessage("UITour:SendPageCallback", detail);
-  },
-
-  isElementVisible: function(aElement) {
-    let targetStyle = aElement.ownerGlobal.getComputedStyle(aElement);
-    return !aElement.ownerDocument.hidden &&
-             targetStyle.display != "none" &&
-             targetStyle.visibility == "visible";
-  },
-
-  getTarget: function(aWindow, aTargetName, aSticky = false) {
-    log.debug("getTarget:", aTargetName);
-    let deferred = Promise.defer();
-    if (typeof aTargetName != "string" || !aTargetName) {
-      log.warn("getTarget: Invalid target name specified");
-      deferred.reject("Invalid target name specified");
-      return deferred.promise;
-    }
-
-    let targetObject = this.targets.get(aTargetName);
-    if (!targetObject) {
-      log.warn("getTarget: The specified target name is not in the allowed set");
-      deferred.reject("The specified target name is not in the allowed set");
-      return deferred.promise;
-    }
-
-    let targetQuery = targetObject.query;
-    aWindow.PanelUI.ensureReady().then(() => {
-      let node;
-      if (typeof targetQuery == "function") {
-        try {
-          node = targetQuery(aWindow.document);
-        } catch (ex) {
-          log.warn("getTarget: Error running target query:", ex);
-          node = null;
-        }
-      } else {
-        node = aWindow.document.querySelector(targetQuery);
-      }
-
-      deferred.resolve({
-        addTargetListener: targetObject.addTargetListener,
-        infoPanelOffsetX: targetObject.infoPanelOffsetX,
-        infoPanelOffsetY: targetObject.infoPanelOffsetY,
-        infoPanelPosition: targetObject.infoPanelPosition,
-        node: node,
-        removeTargetListener: targetObject.removeTargetListener,
-        targetName: aTargetName,
-        widgetName: targetObject.widgetName,
-        allowAdd: targetObject.allowAdd,
-      });
-    }).catch(log.error);
-    return deferred.promise;
-  },
-
-  targetIsInAppMenu: function(aTarget) {
-    let placement = CustomizableUI.getPlacementOfWidget(aTarget.widgetName || aTarget.node.id);
-    if (placement && placement.area == CustomizableUI.AREA_PANEL) {
-      return true;
-    }
-
-    let targetElement = aTarget.node;
-    // Use the widget for filtering if it exists since the target may be the icon inside.
-    if (aTarget.widgetName) {
-      targetElement = aTarget.node.ownerDocument.getElementById(aTarget.widgetName);
-    }
-
-    // Handle the non-customizable buttons at the bottom of the menu which aren't proper widgets.
-    return targetElement.id.startsWith("PanelUI-")
-             && targetElement.id != "PanelUI-button";
-  },
-
-  /**
-   * Called before opening or after closing a highlight or info panel to see if
-   * we need to open or close the appMenu to see the annotation's anchor.
-   */
-  _setAppMenuStateForAnnotation: function(aWindow, aAnnotationType, aShouldOpenForHighlight, aCallback = null) {
-    log.debug("_setAppMenuStateForAnnotation:", aAnnotationType);
-    log.debug("_setAppMenuStateForAnnotation: Menu is expected to be:", aShouldOpenForHighlight ? "open" : "closed");
-
-    // If the panel is in the desired state, we're done.
-    let panelIsOpen = aWindow.PanelUI.panel.state != "closed";
-    if (aShouldOpenForHighlight == panelIsOpen) {
-      log.debug("_setAppMenuStateForAnnotation: Panel already in expected state");
-      if (aCallback)
-        aCallback();
-      return;
-    }
-
-    // Don't close the menu if it wasn't opened by us (e.g. via showmenu instead).
-    if (!aShouldOpenForHighlight && !this.appMenuOpenForAnnotation.has(aAnnotationType)) {
-      log.debug("_setAppMenuStateForAnnotation: Menu not opened by us, not closing");
-      if (aCallback)
-        aCallback();
-      return;
-    }
-
-    if (aShouldOpenForHighlight) {
-      this.appMenuOpenForAnnotation.add(aAnnotationType);
-    } else {
-      this.appMenuOpenForAnnotation.delete(aAnnotationType);
-    }
-
-    // Actually show or hide the menu
-    if (this.appMenuOpenForAnnotation.size) {
-      log.debug("_setAppMenuStateForAnnotation: Opening the menu");
-      this.showMenu(aWindow, "appMenu", aCallback);
-    } else {
-      log.debug("_setAppMenuStateForAnnotation: Closing the menu");
-      this.hideMenu(aWindow, "appMenu");
-      if (aCallback)
-        aCallback();
-    }
-
-  },
-
-  previewTheme: function(aTheme) {
-    let origin = Services.prefs.getCharPref("browser.uitour.themeOrigin");
-    let data = LightweightThemeManager.parseTheme(aTheme, origin);
-    if (data)
-      LightweightThemeManager.previewTheme(data);
-  },
-
-  resetTheme: function() {
-    LightweightThemeManager.resetPreview();
-  },
-
-  /**
-   * Show the Heartbeat UI to request user feedback. This function reports back to the
-   * caller using |notify|. The notification event name reflects the current status the UI
-   * is in (either "Heartbeat:NotificationOffered", "Heartbeat:NotificationClosed",
-   * "Heartbeat:LearnMore", "Heartbeat:Engaged", "Heartbeat:Voted",
-   * "Heartbeat:SurveyExpired" or "Heartbeat:WindowClosed").
-   * When a "Heartbeat:Voted" event is notified
-   * the data payload contains a |score| field which holds the rating picked by the user.
-   * Please note that input parameters are already validated by the caller.
-   *
-   * @param aChromeWindow
-   *        The chrome window that the heartbeat notification is displayed in.
-   * @param {Object} aOptions Options object.
-   * @param {String} aOptions.message
-   *        The message, or question, to display on the notification.
-   * @param {String} aOptions.thankyouMessage
-   *        The thank you message to display after user votes.
-   * @param {String} aOptions.flowId
-   *        An identifier for this rating flow. Please note that this is only used to
-   *        identify the notification box.
-   * @param {String} [aOptions.engagementButtonLabel=null]
-   *        The text of the engagement button to use instad of stars. If this is null
-   *        or invalid, rating stars are used.
-   * @param {String} [aOptions.engagementURL=null]
-   *        The engagement URL to open in a new tab once user has engaged. If this is null
-   *        or invalid, no new tab is opened.
-   * @param {String} [aOptions.learnMoreLabel=null]
-   *        The label of the learn more link. No link will be shown if this is null.
-   * @param {String} [aOptions.learnMoreURL=null]
-   *        The learn more URL to open when clicking on the learn more link. No learn more
-   *        will be shown if this is an invalid URL.
-   * @param {boolean} [aOptions.privateWindowsOnly=false]
-   *        Whether the heartbeat UI should only be targeted at a private window (if one exists).
-   *        No notifications should be fired when this is true.
-   * @param {String} [aOptions.surveyId]
-   *        An ID for the survey, reflected in the Telemetry ping.
-   * @param {Number} [aOptions.surveyVersion]
-   *        Survey's version number, reflected in the Telemetry ping.
-   * @param {boolean} [aOptions.testing]
-   *        Whether this is a test survey, reflected in the Telemetry ping.
-   */
-  showHeartbeat(aChromeWindow, aOptions) {
-    // Initialize survey state
-    let pingSent = false;
-    let surveyResults = {};
-    let surveyEndTimer = null;
-
-    /**
-     * Accumulates survey events and submits to Telemetry after the survey ends.
-     *
-     * @param {String} aEventName
-     *        Heartbeat event name
-     * @param {Object} aParams
-     *        Additional parameters and their values
-     */
-    let maybeNotifyHeartbeat = (aEventName, aParams = {}) => {
-      // Return if event occurred after the ping was sent
-      if (pingSent) {
-        log.warn("maybeNotifyHeartbeat: event occurred after ping sent:", aEventName, aParams);
-        return;
-      }
-
-      // No Telemetry from private-window-only Heartbeats
-      if (aOptions.privateWindowsOnly) {
-        return;
-      }
-
-      let ts = Date.now();
-      let sendPing = false;
-      switch (aEventName) {
-        case "Heartbeat:NotificationOffered":
-          surveyResults.flowId = aOptions.flowId;
-          surveyResults.offeredTS = ts;
-          break;
-        case "Heartbeat:LearnMore":
-          // record only the first click
-          if (!surveyResults.learnMoreTS) {
-            surveyResults.learnMoreTS = ts;
-          }
-          break;
-        case "Heartbeat:Engaged":
-          surveyResults.engagedTS = ts;
-          break;
-        case "Heartbeat:Voted":
-          surveyResults.votedTS = ts;
-          surveyResults.score = aParams.score;
-          break;
-        case "Heartbeat:SurveyExpired":
-          surveyResults.expiredTS = ts;
-          break;
-        case "Heartbeat:NotificationClosed":
-          // this is the final event in most surveys
-          surveyResults.closedTS = ts;
-          sendPing = true;
-          break;
-        case "Heartbeat:WindowClosed":
-          surveyResults.windowClosedTS = ts;
-          sendPing = true;
-          break;
-        default:
-          log.error("maybeNotifyHeartbeat: unrecognized event:", aEventName);
-          break;
-      }
-
-      aParams.timestamp = ts;
-      aParams.flowId = aOptions.flowId;
-      this.notify(aEventName, aParams);
-
-      if (!sendPing) {
-        return;
-      }
-
-      // Send the ping to Telemetry
-      let payload = Object.assign({}, surveyResults);
-      payload.version = 1;
-      for (let meta of ["surveyId", "surveyVersion", "testing"]) {
-        if (aOptions.hasOwnProperty(meta)) {
-          payload[meta] = aOptions[meta];
-        }
-      }
-
-      log.debug("Sending payload to Telemetry: aEventName:", aEventName,
-                "payload:", payload);
-
-      TelemetryController.submitExternalPing("heartbeat", payload, {
-        addClientId: true,
-        addEnvironment: true,
-      });
-
-      // only for testing
-      this.notify("Heartbeat:TelemetrySent", payload);
-
-      // Survey is complete, clear out the expiry timer & survey configuration
-      if (surveyEndTimer) {
-        clearTimeout(surveyEndTimer);
-        surveyEndTimer = null;
-      }
-
-      pingSent = true;
-      surveyResults = {};
-    };
-
-    let nb = aChromeWindow.document.getElementById("high-priority-global-notificationbox");
-    let buttons = null;
-
-    if (aOptions.engagementButtonLabel) {
-      buttons = [{
-        label: aOptions.engagementButtonLabel,
-        callback: () => {
-          // Let the consumer know user engaged.
-          maybeNotifyHeartbeat("Heartbeat:Engaged");
-
-          userEngaged(new Map([
-            ["type", "button"],
-            ["flowid", aOptions.flowId]
-          ]));
-
-          // Return true so that the notification bar doesn't close itself since
-          // we have a thank you message to show.
-          return true;
-        },
-      }];
-    }
-
-    let defaultIcon = "chrome://browser/skin/heartbeat-icon.svg";
-    let iconURL = defaultIcon;
-    try {
-      // Take the optional icon URL if specified
-      if (aOptions.iconURL) {
-        iconURL = new URL(aOptions.iconURL);
-        // For now, only allow chrome URIs.
-        if (iconURL.protocol != "chrome:") {
-          iconURL = defaultIcon;
-          throw new Error("Invalid protocol");
-        }
-      }
-    } catch (error) {
-      log.error("showHeartbeat: Invalid icon URL specified.");
-    }
-
-    // Create the notification. Prefix its ID to decrease the chances of collisions.
-    let notice = nb.appendNotification(aOptions.message, "heartbeat-" + aOptions.flowId,
-                                       iconURL,
-                                       nb.PRIORITY_INFO_HIGH, buttons,
-                                       (aEventType) => {
-                                         if (aEventType != "removed") {
-                                           return;
-                                         }
-                                         // Let the consumer know the notification bar was closed.
-                                         // This also happens after voting.
-                                         maybeNotifyHeartbeat("Heartbeat:NotificationClosed");
-                                       });
-
-    // Get the elements we need to style.
-    let messageImage =
-      aChromeWindow.document.getAnonymousElementByAttribute(notice, "anonid", "messageImage");
-    let messageText =
-      aChromeWindow.document.getAnonymousElementByAttribute(notice, "anonid", "messageText");
-
-    function userEngaged(aEngagementParams) {
-      // Make the heartbeat icon pulse twice.
-      notice.label = aOptions.thankyouMessage;
-      messageImage.classList.remove("pulse-onshow");
-      messageImage.classList.add("pulse-twice");
-
-      // Remove all the children of the notice (rating container
-      // and the flex).
-      while (notice.firstChild) {
-        notice.removeChild(notice.firstChild);
-      }
-
-      // Make sure that we have a valid URL. If we haven't, do not open the engagement page.
-      let engagementURL = null;
-      try {
-        engagementURL = new URL(aOptions.engagementURL);
-      } catch (error) {
-        log.error("showHeartbeat: Invalid URL specified.");
-      }
-
-      // Just open the engagement tab if we have a valid engagement URL.
-      if (engagementURL) {
-        for (let [param, value] of aEngagementParams) {
-          engagementURL.searchParams.append(param, value);
-        }
-
-        // Open the engagement URL in a new tab.
-        aChromeWindow.gBrowser.selectedTab =
-          aChromeWindow.gBrowser.addTab(engagementURL.toString(), {
-            owner: aChromeWindow.gBrowser.selectedTab,
-            relatedToCurrent: true
-          });
-      }
-
-      // Remove the notification bar after 3 seconds.
-      aChromeWindow.setTimeout(() => {
-        nb.removeNotification(notice);
-      }, 3000);
-    }
-
-    // Create the fragment holding the rating UI.
-    let frag = aChromeWindow.document.createDocumentFragment();
-
-    // Build the Heartbeat star rating.
-    const numStars = aOptions.engagementButtonLabel ? 0 : 5;
-    let ratingContainer = aChromeWindow.document.createElement("hbox");
-    ratingContainer.id = "star-rating-container";
-
-    for (let i = 0; i < numStars; i++) {
-      // Create a star rating element.
-      let ratingElement = aChromeWindow.document.createElement("toolbarbutton");
-
-      // Style it.
-      let starIndex = numStars - i;
-      ratingElement.className = "plain star-x";
-      ratingElement.id = "star" + starIndex;
-      ratingElement.setAttribute("data-score", starIndex);
-
-      // Add the click handler.
-      ratingElement.addEventListener("click", function (evt) {
-        let rating = Number(evt.target.getAttribute("data-score"), 10);
-
-        // Let the consumer know user voted.
-        maybeNotifyHeartbeat("Heartbeat:Voted", { score: rating });
-
-        // Append the score data to the engagement URL.
-        userEngaged(new Map([
-          ["type", "stars"],
-          ["score", rating],
-          ["flowid", aOptions.flowId]
-        ]));
-      }.bind(this));
-
-      // Add it to the container.
-      ratingContainer.appendChild(ratingElement);
-    }
-
-    frag.appendChild(ratingContainer);
-
-    // Make sure the stars are not pushed to the right by the spacer.
-    let rightSpacer = aChromeWindow.document.createElement("spacer");
-    rightSpacer.flex = 20;
-    frag.appendChild(rightSpacer);
-
-    messageText.flex = 0; // Collapse the space before the stars.
-    let leftSpacer = messageText.nextSibling;
-    leftSpacer.flex = 0;
-
-    // Make sure that we have a valid learn more URL.
-    let learnMoreURL = null;
-    try {
-      learnMoreURL = new URL(aOptions.learnMoreURL);
-    } catch (error) {
-      log.error("showHeartbeat: Invalid learnMore URL specified.");
-    }
-
-    // Add the learn more link.
-    if (aOptions.learnMoreLabel && learnMoreURL) {
-      let learnMore = aChromeWindow.document.createElement("label");
-      learnMore.className = "text-link";
-      learnMore.href = learnMoreURL.toString();
-      learnMore.setAttribute("value", aOptions.learnMoreLabel);
-      learnMore.addEventListener("click", () => maybeNotifyHeartbeat("Heartbeat:LearnMore"));
-      frag.appendChild(learnMore);
-    }
-
-    // Append the fragment and apply the styling.
-    notice.appendChild(frag);
-    notice.classList.add("heartbeat");
-    messageImage.classList.add("heartbeat", "pulse-onshow");
-    messageText.classList.add("heartbeat");
-
-    // Let the consumer know the notification was shown.
-    maybeNotifyHeartbeat("Heartbeat:NotificationOffered");
-
-    // End the survey if the user quits, closes the window, or
-    // hasn't responded before expiration.
-    if (!aOptions.privateWindowsOnly) {
-      function handleWindowClosed(aTopic) {
-        maybeNotifyHeartbeat("Heartbeat:WindowClosed");
-        aChromeWindow.removeEventListener("SSWindowClosing", handleWindowClosed);
-      }
-      aChromeWindow.addEventListener("SSWindowClosing", handleWindowClosed);
-
-      let surveyDuration = Services.prefs.getIntPref(PREF_SURVEY_DURATION) * 1000;
-      surveyEndTimer = setTimeout(() => {
-        maybeNotifyHeartbeat("Heartbeat:SurveyExpired");
-        nb.removeNotification(notice);
-      }, surveyDuration);
-    }
-  },
-
-  /**
-   * The node to which a highlight or notification(-popup) is anchored is sometimes
-   * obscured because it may be inside an overflow menu. This function should figure
-   * that out and offer the overflow chevron as an alternative.
-   *
-   * @param {Node} aAnchor The element that's supposed to be the anchor
-   * @type {Node}
-   */
-  _correctAnchor: function(aAnchor) {
-    // If the target is in the overflow panel, just return the overflow button.
-    if (aAnchor.getAttribute("overflowedItem")) {
-      let doc = aAnchor.ownerDocument;
-      let placement = CustomizableUI.getPlacementOfWidget(aAnchor.id);
-      let areaNode = doc.getElementById(placement.area);
-      return areaNode.overflowable._chevron;
-    }
-
-    return aAnchor;
-  },
-
-  /**
-   * @param aChromeWindow The chrome window that the highlight is in. Necessary since some targets
-   *                      are in a sub-frame so the defaultView is not the same as the chrome
-   *                      window.
-   * @param aTarget    The element to highlight.
-   * @param aEffect    (optional) The effect to use from UITour.highlightEffects or "none".
-   * @see UITour.highlightEffects
-   */
-  showHighlight: function(aChromeWindow, aTarget, aEffect = "none") {
-    function showHighlightPanel() {
-      let highlighter = aChromeWindow.document.getElementById("UITourHighlight");
-
-      let effect = aEffect;
-      if (effect == "random") {
-        // Exclude "random" from the randomly selected effects.
-        let randomEffect = 1 + Math.floor(Math.random() * (this.highlightEffects.length - 1));
-        if (randomEffect == this.highlightEffects.length)
-          randomEffect--; // On the order of 1 in 2^62 chance of this happening.
-        effect = this.highlightEffects[randomEffect];
-      }
-      // Toggle the effect attribute to "none" and flush layout before setting it so the effect plays.
-      highlighter.setAttribute("active", "none");
-      aChromeWindow.getComputedStyle(highlighter).animationName;
-      highlighter.setAttribute("active", effect);
-      highlighter.parentElement.setAttribute("targetName", aTarget.targetName);
-      highlighter.parentElement.hidden = false;
-
-      let highlightAnchor = this._correctAnchor(aTarget.node);
-      let targetRect = highlightAnchor.getBoundingClientRect();
-      let highlightHeight = targetRect.height;
-      let highlightWidth = targetRect.width;
-      let minDimension = Math.min(highlightHeight, highlightWidth);
-      let maxDimension = Math.max(highlightHeight, highlightWidth);
-
-      // If the dimensions are within 200% of each other (to include the bookmarks button),
-      // make the highlight a circle with the largest dimension as the diameter.
-      if (maxDimension / minDimension <= 3.0) {
-        highlightHeight = highlightWidth = maxDimension;
-        highlighter.style.borderRadius = "100%";
-      } else {
-        highlighter.style.borderRadius = "";
-      }
-
-      highlighter.style.height = highlightHeight + "px";
-      highlighter.style.width = highlightWidth + "px";
-
-      // Close a previous highlight so we can relocate the panel.
-      if (highlighter.parentElement.state == "showing" || highlighter.parentElement.state == "open") {
-        log.debug("showHighlight: Closing previous highlight first");
-        highlighter.parentElement.hidePopup();
-      }
-      /* The "overlap" position anchors from the top-left but we want to centre highlights at their
-         minimum size. */
-      let highlightWindow = aChromeWindow;
-      let containerStyle = highlightWindow.getComputedStyle(highlighter.parentElement);
-      let paddingTopPx = 0 - parseFloat(containerStyle.paddingTop);
-      let paddingLeftPx = 0 - parseFloat(containerStyle.paddingLeft);
-      let highlightStyle = highlightWindow.getComputedStyle(highlighter);
-      let highlightHeightWithMin = Math.max(highlightHeight, parseFloat(highlightStyle.minHeight));
-      let highlightWidthWithMin = Math.max(highlightWidth, parseFloat(highlightStyle.minWidth));
-      let offsetX = paddingTopPx
-                      - (Math.max(0, highlightWidthWithMin - targetRect.width) / 2);
-      let offsetY = paddingLeftPx
-                      - (Math.max(0, highlightHeightWithMin - targetRect.height) / 2);
-      this._addAnnotationPanelMutationObserver(highlighter.parentElement);
-      highlighter.parentElement.openPopup(highlightAnchor, "overlap", offsetX, offsetY);
-    }
-
-    // Prevent showing a panel at an undefined position.
-    if (!this.isElementVisible(aTarget.node)) {
-      log.warn("showHighlight: Not showing a highlight since the target isn't visible", aTarget);
-      return;
-    }
-
-    this._setAppMenuStateForAnnotation(aChromeWindow, "highlight",
-                                       this.targetIsInAppMenu(aTarget),
-                                       showHighlightPanel.bind(this));
-  },
-
-  hideHighlight: function(aWindow) {
-    let highlighter = aWindow.document.getElementById("UITourHighlight");
-    this._removeAnnotationPanelMutationObserver(highlighter.parentElement);
-    highlighter.parentElement.hidePopup();
-    highlighter.removeAttribute("active");
-
-    this._setAppMenuStateForAnnotation(aWindow, "highlight", false);
-  },
-
-  /**
-   * Show an info panel.
-   *
-   * @param {ChromeWindow} aChromeWindow
-   * @param {Node}     aAnchor
-   * @param {String}   [aTitle=""]
-   * @param {String}   [aDescription=""]
-   * @param {String}   [aIconURL=""]
-   * @param {Object[]} [aButtons=[]]
-   * @param {Object}   [aOptions={}]
-   * @param {String}   [aOptions.closeButtonCallback]
-   * @param {String}   [aOptions.targetCallback]
-   */
-  showInfo(aChromeWindow, aAnchor, aTitle = "", aDescription = "",
-           aIconURL = "", aButtons = [], aOptions = {}) {
-    function showInfoPanel(aAnchorEl) {
-      aAnchorEl.focus();
-
-      let document = aChromeWindow.document;
-      let tooltip = document.getElementById("UITourTooltip");
-      let tooltipTitle = document.getElementById("UITourTooltipTitle");
-      let tooltipDesc = document.getElementById("UITourTooltipDescription");
-      let tooltipIcon = document.getElementById("UITourTooltipIcon");
-      let tooltipButtons = document.getElementById("UITourTooltipButtons");
-
-      if (tooltip.state == "showing" || tooltip.state == "open") {
-        tooltip.hidePopup();
-      }
-
-      tooltipTitle.textContent = aTitle || "";
-      tooltipDesc.textContent = aDescription || "";
-      tooltipIcon.src = aIconURL || "";
-      tooltipIcon.hidden = !aIconURL;
-
-      while (tooltipButtons.firstChild)
-        tooltipButtons.firstChild.remove();
-
-      for (let button of aButtons) {
-        let isButton = button.style != "text";
-        let el = document.createElement(isButton ? "button" : "label");
-        el.setAttribute(isButton ? "label" : "value", button.label);
-
-        if (isButton) {
-          if (button.iconURL)
-            el.setAttribute("image", button.iconURL);
-
-          if (button.style == "link")
-            el.setAttribute("class", "button-link");
-
-          if (button.style == "primary")
-            el.setAttribute("class", "button-primary");
-
-          // Don't close the popup or call the callback for style=text as they
-          // aren't links/buttons.
-          let callback = button.callback;
-          el.addEventListener("command", event => {
-            tooltip.hidePopup();
-            callback(event);
-          });
-        }
-
-        tooltipButtons.appendChild(el);
-      }
-
-      tooltipButtons.hidden = !aButtons.length;
-
-      let tooltipClose = document.getElementById("UITourTooltipClose");
-      let closeButtonCallback = (event) => {
-        this.hideInfo(document.defaultView);
-        if (aOptions && aOptions.closeButtonCallback) {
-          aOptions.closeButtonCallback();
-        }
-      };
-      tooltipClose.addEventListener("command", closeButtonCallback);
-
-      let targetCallback = (event) => {
-        let details = {
-          target: aAnchor.targetName,
-          type: event.type,
-        };
-        aOptions.targetCallback(details);
-      };
-      if (aOptions.targetCallback && aAnchor.addTargetListener) {
-        aAnchor.addTargetListener(document, targetCallback);
-      }
-
-      tooltip.addEventListener("popuphiding", function tooltipHiding(event) {
-        tooltip.removeEventListener("popuphiding", tooltipHiding);
-        tooltipClose.removeEventListener("command", closeButtonCallback);
-        if (aOptions.targetCallback && aAnchor.removeTargetListener) {
-          aAnchor.removeTargetListener(document, targetCallback);
-        }
-      });
-
-      tooltip.setAttribute("targetName", aAnchor.targetName);
-      tooltip.hidden = false;
-      let alignment = "bottomcenter topright";
-      if (aAnchor.infoPanelPosition) {
-        alignment = aAnchor.infoPanelPosition;
-      }
-
-      let { infoPanelOffsetX: xOffset, infoPanelOffsetY: yOffset } = aAnchor;
-
-      this._addAnnotationPanelMutationObserver(tooltip);
-      tooltip.openPopup(aAnchorEl, alignment, xOffset || 0, yOffset || 0);
-      if (tooltip.state == "closed") {
-        document.defaultView.addEventListener("endmodalstate", function endModalStateHandler() {
-          document.defaultView.removeEventListener("endmodalstate", endModalStateHandler);
-          tooltip.openPopup(aAnchorEl, alignment);
-        }, false);
-      }
-    }
-
-    // Prevent showing a panel at an undefined position.
-    if (!this.isElementVisible(aAnchor.node)) {
-      log.warn("showInfo: Not showing since the target isn't visible", aAnchor);
-      return;
-    }
-
-    this._setAppMenuStateForAnnotation(aChromeWindow, "info",
-                                       this.targetIsInAppMenu(aAnchor),
-                                       showInfoPanel.bind(this, this._correctAnchor(aAnchor.node)));
-  },
-
-  isInfoOnTarget(aChromeWindow, aTargetName) {
-    let document = aChromeWindow.document;
-    let tooltip = document.getElementById("UITourTooltip");
-    return tooltip.getAttribute("targetName") == aTargetName && tooltip.state != "closed";
-  },
-
-  hideInfo: function(aWindow) {
-    let document = aWindow.document;
-
-    let tooltip = document.getElementById("UITourTooltip");
-    this._removeAnnotationPanelMutationObserver(tooltip);
-    tooltip.hidePopup();
-    this._setAppMenuStateForAnnotation(aWindow, "info", false);
-
-    let tooltipButtons = document.getElementById("UITourTooltipButtons");
-    while (tooltipButtons.firstChild)
-      tooltipButtons.firstChild.remove();
-  },
-
-  showMenu: function(aWindow, aMenuName, aOpenCallback = null) {
-    log.debug("showMenu:", aMenuName);
-    function openMenuButton(aMenuBtn) {
-      if (!aMenuBtn || !aMenuBtn.boxObject || aMenuBtn.open) {
-        if (aOpenCallback)
-          aOpenCallback();
-        return;
-      }
-      if (aOpenCallback)
-        aMenuBtn.addEventListener("popupshown", onPopupShown);
-      aMenuBtn.boxObject.openMenu(true);
-    }
-    function onPopupShown(event) {
-      this.removeEventListener("popupshown", onPopupShown);
-      aOpenCallback(event);
-    }
-
-    if (aMenuName == "appMenu") {
-      aWindow.PanelUI.panel.setAttribute("noautohide", "true");
-      // If the popup is already opened, don't recreate the widget as it may cause a flicker.
-      if (aWindow.PanelUI.panel.state != "open") {
-        this.recreatePopup(aWindow.PanelUI.panel);
-      }
-      aWindow.PanelUI.panel.addEventListener("popuphiding", this.hideAppMenuAnnotations);
-      aWindow.PanelUI.panel.addEventListener("ViewShowing", this.hideAppMenuAnnotations);
-      aWindow.PanelUI.panel.addEventListener("popuphidden", this.onPanelHidden);
-      if (aOpenCallback) {
-        aWindow.PanelUI.panel.addEventListener("popupshown", onPopupShown);
-      }
-      aWindow.PanelUI.show();
-    } else if (aMenuName == "bookmarks") {
-      let menuBtn = aWindow.document.getElementById("bookmarks-menu-button");
-      openMenuButton(menuBtn);
-    } else if (aMenuName == "controlCenter") {
-      let popup = aWindow.gIdentityHandler._identityPopup;
-
-      // Add the listener even if the panel is already open since it will still
-      // only get registered once even if it was UITour that opened it.
-      popup.addEventListener("popuphiding", this.hideControlCenterAnnotations);
-      popup.addEventListener("popuphidden", this.onPanelHidden);
-
-      popup.setAttribute("noautohide", true);
-      this.clearAvailableTargetsCache();
-
-      if (popup.state == "open") {
-        if (aOpenCallback) {
-          aOpenCallback();
-        }
-        return;
-      }
-
-      this.recreatePopup(popup);
-
-      // Open the control center
-      if (aOpenCallback) {
-        popup.addEventListener("popupshown", onPopupShown);
-      }
-      aWindow.document.getElementById("identity-box").click();
-    } else if (aMenuName == "pocket") {
-      this.getTarget(aWindow, "pocket").then(Task.async(function* onPocketTarget(target) {
-        let widgetGroupWrapper = CustomizableUI.getWidget(target.widgetName);
-        if (widgetGroupWrapper.type != "view" || !widgetGroupWrapper.viewId) {
-          log.error("Can't open the pocket menu without a view");
-          return;
-        }
-        let placement = CustomizableUI.getPlacementOfWidget(target.widgetName);
-        if (!placement || !placement.area) {
-          log.error("Can't open the pocket menu without a placement");
-          return;
-        }
-
-        if (placement.area == CustomizableUI.AREA_PANEL) {
-          // Open the appMenu and wait for it if it's not already opened or showing a subview.
-          yield new Promise((resolve, reject) => {
-            if (aWindow.PanelUI.panel.state != "closed") {
-              if (aWindow.PanelUI.multiView.showingSubView) {
-                reject("A subview is already showing");
-                return;
-              }
-
-              resolve();
-              return;
-            }
-
-            aWindow.PanelUI.panel.addEventListener("popupshown", function onShown() {
-              aWindow.PanelUI.panel.removeEventListener("popupshown", onShown);
-              resolve();
-            });
-
-            aWindow.PanelUI.show();
-          });
-        }
-
-        let widgetWrapper = widgetGroupWrapper.forWindow(aWindow);
-        aWindow.PanelUI.showSubView(widgetGroupWrapper.viewId,
-                                    widgetWrapper.anchor,
-                                    placement.area);
-      })).catch(log.error);
-    }
-  },
-
-  hideMenu: function(aWindow, aMenuName) {
-    log.debug("hideMenu:", aMenuName);
-    function closeMenuButton(aMenuBtn) {
-      if (aMenuBtn && aMenuBtn.boxObject)
-        aMenuBtn.boxObject.openMenu(false);
-    }
-
-    if (aMenuName == "appMenu") {
-      aWindow.PanelUI.hide();
-    } else if (aMenuName == "bookmarks") {
-      let menuBtn = aWindow.document.getElementById("bookmarks-menu-button");
-      closeMenuButton(menuBtn);
-    } else if (aMenuName == "controlCenter") {
-      let panel = aWindow.gIdentityHandler._identityPopup;
-      panel.hidePopup();
-    }
-  },
-
-  showNewTab: function(aWindow, aBrowser) {
-    aWindow.openLinkIn("about:newtab", "current", {targetBrowser: aBrowser});
-  },
-
-  hideAnnotationsForPanel: function(aEvent, aTargetPositionCallback) {
-    let win = aEvent.target.ownerGlobal;
-    let annotationElements = new Map([
-      // [annotationElement (panel), method to hide the annotation]
-      [win.document.getElementById("UITourHighlightContainer"), UITour.hideHighlight.bind(UITour)],
-      [win.document.getElementById("UITourTooltip"), UITour.hideInfo.bind(UITour)],
-    ]);
-    annotationElements.forEach((hideMethod, annotationElement) => {
-      if (annotationElement.state != "closed") {
-        let targetName = annotationElement.getAttribute("targetName");
-        UITour.getTarget(win, targetName).then((aTarget) => {
-          // Since getTarget is async, we need to make sure that the target hasn't
-          // changed since it may have just moved to somewhere outside of the app menu.
-          if (annotationElement.getAttribute("targetName") != aTarget.targetName ||
-              annotationElement.state == "closed" ||
-              !aTargetPositionCallback(aTarget)) {
-            return;
-          }
-          hideMethod(win);
-        }).catch(log.error);
-      }
-    });
-    UITour.appMenuOpenForAnnotation.clear();
-  },
-
-  hideAppMenuAnnotations: function(aEvent) {
-    UITour.hideAnnotationsForPanel(aEvent, UITour.targetIsInAppMenu);
-  },
-
-  hideControlCenterAnnotations(aEvent) {
-    UITour.hideAnnotationsForPanel(aEvent, (aTarget) => {
-      return aTarget.targetName.startsWith("controlCenter-");
-    });
-  },
-
-  onPanelHidden: function(aEvent) {
-    aEvent.target.removeAttribute("noautohide");
-    UITour.recreatePopup(aEvent.target);
-    UITour.clearAvailableTargetsCache();
-  },
-
-  recreatePopup: function(aPanel) {
-    // After changing popup attributes that relate to how the native widget is created
-    // (e.g. @noautohide) we need to re-create the frame/widget for it to take effect.
-    if (aPanel.hidden) {
-      // If the panel is already hidden, we don't need to recreate it but flush
-      // in case someone just hid it.
-      aPanel.clientWidth; // flush
-      return;
-    }
-    aPanel.hidden = true;
-    aPanel.clientWidth; // flush
-    aPanel.hidden = false;
-  },
-
-  getConfiguration: function(aMessageManager, aWindow, aConfiguration, aCallbackID) {
-    switch (aConfiguration) {
-      case "appinfo":
-        let props = ["defaultUpdateChannel", "version"];
-        let appinfo = {};
-        props.forEach(property => appinfo[property] = Services.appinfo[property]);
-
-        // Identifier of the partner repack, as stored in preference "distribution.id"
-        // and included in Firefox and other update pings. Note this is not the same as
-        // Services.appinfo.distributionID (value of MOZ_DISTRIBUTION_ID is set at build time).
-        let distribution = "default";
-        try {
-          distribution = Services.prefs.getDefaultBranch("distribution.").getCharPref("id");
-        } catch (e) {}
-        appinfo["distribution"] = distribution;
-
-        let isDefaultBrowser = null;
-        try {
-          let shell = aWindow.getShellService();
-          if (shell) {
-            isDefaultBrowser = shell.isDefaultBrowser(false);
-          }
-        } catch (e) {}
-        appinfo["defaultBrowser"] = isDefaultBrowser;
-
-        let canSetDefaultBrowserInBackground = true;
-        if (AppConstants.isPlatformAndVersionAtLeast("win", "6.2") ||
-            AppConstants.isPlatformAndVersionAtLeast("macosx", "10.10")) {
-          canSetDefaultBrowserInBackground = false;
-        } else if (AppConstants.platform == "linux") {
-          // The ShellService may not exist on some versions of Linux.
-          try {
-            aWindow.getShellService();
-          } catch (e) {
-            canSetDefaultBrowserInBackground = null;
-          }
-        }
-
-        appinfo["canSetDefaultBrowserInBackground"] =
-          canSetDefaultBrowserInBackground;
-
-        this.sendPageCallback(aMessageManager, aCallbackID, appinfo);
-        break;
-      case "availableTargets":
-        this.getAvailableTargets(aMessageManager, aWindow, aCallbackID);
-        break;
-      case "search":
-      case "selectedSearchEngine":
-        Services.search.init(rv => {
-          let data;
-          if (Components.isSuccessCode(rv)) {
-            let engines = Services.search.getVisibleEngines();
-            data = {
-              searchEngineIdentifier: Services.search.defaultEngine.identifier,
-              engines: engines.filter((engine) => engine.identifier)
-                              .map((engine) => TARGET_SEARCHENGINE_PREFIX + engine.identifier)
-            };
-          } else {
-            data = {engines: [], searchEngineIdentifier: ""};
-          }
-          this.sendPageCallback(aMessageManager, aCallbackID, data);
-        });
-        break;
-      case "sync":
-        this.sendPageCallback(aMessageManager, aCallbackID, {
-          setup: Services.prefs.prefHasUserValue("services.sync.username"),
-          desktopDevices: Preferences.get("services.sync.clients.devices.desktop", 0),
-          mobileDevices: Preferences.get("services.sync.clients.devices.mobile", 0),
-          totalDevices: Preferences.get("services.sync.numClients", 0),
-        });
-        break;
-      case "canReset":
-        this.sendPageCallback(aMessageManager, aCallbackID, ResetProfile.resetSupported());
-        break;
-      default:
-        log.error("getConfiguration: Unknown configuration requested: " + aConfiguration);
-        break;
-    }
-  },
-
-  setConfiguration: function(aWindow, aConfiguration, aValue) {
-    switch (aConfiguration) {
-      case "defaultBrowser":
-        // Ignore aValue in this case because the default browser can only
-        // be set, not unset.
-        try {
-          let shell = aWindow.getShellService();
-          if (shell) {
-            shell.setDefaultBrowser(true, false);
-          }
-        } catch (e) {}
-        break;
-      default:
-        log.error("setConfiguration: Unknown configuration requested: " + aConfiguration);
-        break;
-    }
-  },
-
-  getAvailableTargets: function(aMessageManager, aChromeWindow, aCallbackID) {
-    Task.spawn(function*() {
-      let window = aChromeWindow;
-      let data = this.availableTargetsCache.get(window);
-      if (data) {
-        log.debug("getAvailableTargets: Using cached targets list", data.targets.join(","));
-        this.sendPageCallback(aMessageManager, aCallbackID, data);
-        return;
-      }
-
-      let promises = [];
-      for (let targetName of this.targets.keys()) {
-        promises.push(this.getTarget(window, targetName));
-      }
-      let targetObjects = yield Promise.all(promises);
-
-      let targetNames = [];
-      for (let targetObject of targetObjects) {
-        if (targetObject.node)
-          targetNames.push(targetObject.targetName);
-      }
-
-      data = {
-        targets: targetNames,
-      };
-      this.availableTargetsCache.set(window, data);
-      this.sendPageCallback(aMessageManager, aCallbackID, data);
-    }.bind(this)).catch(err => {
-      log.error(err);
-      this.sendPageCallback(aMessageManager, aCallbackID, {
-        targets: [],
-      });
-    });
-  },
-
-  startSubTour: function (aFeature) {
-    if (aFeature != "string") {
-      log.error("startSubTour: No feature option specified");
-      return;
-    }
-
-    if (aFeature == "readinglist") {
-      ReaderParent.showReaderModeInfoPanel(browser);
-    } else {
-      log.error("startSubTour: Unknown feature option specified");
-      return;
-    }
-  },
-
-  addNavBarWidget: function (aTarget, aMessageManager, aCallbackID) {
-    if (aTarget.node) {
-      log.error("addNavBarWidget: can't add a widget already present:", aTarget);
-      return;
-    }
-    if (!aTarget.allowAdd) {
-      log.error("addNavBarWidget: not allowed to add this widget:", aTarget);
-      return;
-    }
-    if (!aTarget.widgetName) {
-      log.error("addNavBarWidget: can't add a widget without a widgetName property:", aTarget);
-      return;
-    }
-
-    CustomizableUI.addWidgetToArea(aTarget.widgetName, CustomizableUI.AREA_NAVBAR);
-    this.sendPageCallback(aMessageManager, aCallbackID);
-  },
-
-  _addAnnotationPanelMutationObserver: function(aPanelEl) {
-    if (AppConstants.platform == "linux") {
-      let observer = this._annotationPanelMutationObservers.get(aPanelEl);
-      if (observer) {
-        return;
-      }
-      let win = aPanelEl.ownerGlobal;
-      observer = new win.MutationObserver(this._annotationMutationCallback);
-      this._annotationPanelMutationObservers.set(aPanelEl, observer);
-      let observerOptions = {
-        attributeFilter: ["height", "width"],
-        attributes: true,
-      };
-      observer.observe(aPanelEl, observerOptions);
-    }
-  },
-
-  _removeAnnotationPanelMutationObserver: function(aPanelEl) {
-    if (AppConstants.platform == "linux") {
-      let observer = this._annotationPanelMutationObservers.get(aPanelEl);
-      if (observer) {
-        observer.disconnect();
-        this._annotationPanelMutationObservers.delete(aPanelEl);
-      }
-    }
-  },
-
-/**
- * Workaround for Ubuntu panel craziness in bug 970788 where incorrect sizes get passed to
- * nsXULPopupManager::PopupResized and lead to incorrect width and height attributes getting
- * set on the panel.
- */
-  _annotationMutationCallback: function(aMutations) {
-    for (let mutation of aMutations) {
-      // Remove both attributes at once and ignore remaining mutations to be proccessed.
-      mutation.target.removeAttribute("width");
-      mutation.target.removeAttribute("height");
-      return;
-    }
-  },
-
-  selectSearchEngine(aID) {
-    return new Promise((resolve, reject) => {
-      Services.search.init((rv) => {
-        if (!Components.isSuccessCode(rv)) {
-          reject("selectSearchEngine: search service init failed: " + rv);
-          return;
-        }
-
-        let engines = Services.search.getVisibleEngines();
-        for (let engine of engines) {
-          if (engine.identifier == aID) {
-            Services.search.defaultEngine = engine;
-            resolve();
-            return;
-          }
-        }
-        reject("selectSearchEngine could not find engine with given ID");
-        return;
-      });
-    });
-  },
-
-  notify(eventName, params) {
-    let winEnum = Services.wm.getEnumerator("navigator:browser");
-    while (winEnum.hasMoreElements()) {
-      let window = winEnum.getNext();
-      if (window.closed)
-        continue;
-
-      let openTourBrowsers = this.tourBrowsersByWindow.get(window);
-      if (!openTourBrowsers)
-        continue;
-
-      for (let browser of openTourBrowsers) {
-        let messageManager = browser.messageManager;
-        if (!messageManager) {
-          log.error("notify: Trying to notify a browser without a messageManager", browser);
-          continue;
-        }
-        let detail = {
-          event: eventName,
-          params: params,
-        };
-        messageManager.sendAsyncMessage("UITour:SendPageNotification", detail);
-      }
-    }
-  },
-};
-
-function controlCenterTrackingToggleTarget(aUnblock) {
-  return {
-    infoPanelPosition: "rightcenter topleft",
-    query(aDocument) {
-      let popup = aDocument.defaultView.gIdentityHandler._identityPopup;
-      if (popup.state != "open") {
-        return null;
-      }
-      let buttonId = null;
-      if (aUnblock) {
-        if (PrivateBrowsingUtils.isWindowPrivate(aDocument.defaultView)) {
-          buttonId = "tracking-action-unblock-private";
-        } else {
-          buttonId = "tracking-action-unblock";
-        }
-      } else {
-        buttonId = "tracking-action-block";
-      }
-      let element = aDocument.getElementById(buttonId);
-      return UITour.isElementVisible(element) ? element : null;
-    },
-  };
-}
-
-this.UITour.init();
-
-/**
- * UITour Health Report
- */
-/**
- * Public API to be called by the UITour code
- */
-const UITourHealthReport = {
-  recordTreatmentTag: function(tag, value) {
-    return TelemetryController.submitExternalPing("uitour-tag",
-      {
-        version: 1,
-        tagName: tag,
-        tagValue: value,
-      },
-      {
-        addClientId: true,
-        addEnvironment: true,
-      });
-  }
-};
diff --git a/browser/components/uitour/content-UITour.js b/browser/components/uitour/content-UITour.js
deleted file mode 100644
index c33d687e8b..0000000000
--- a/browser/components/uitour/content-UITour.js
+++ /dev/null
@@ -1,103 +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, results: Cr} = Components;
-
-const PREF_TEST_WHITELIST = "browser.uitour.testingOrigins";
-const UITOUR_PERMISSION   = "uitour";
-
-var UITourListener = {
-  handleEvent: function (event) {
-    if (!Services.prefs.getBoolPref("browser.uitour.enabled")) {
-      return;
-    }
-    if (!this.ensureTrustedOrigin()) {
-      return;
-    }
-    addMessageListener("UITour:SendPageCallback", this);
-    addMessageListener("UITour:SendPageNotification", this);
-    sendAsyncMessage("UITour:onPageEvent", {
-      detail: event.detail,
-      type: event.type,
-      pageVisibilityState: content.document.visibilityState,
-    });
-  },
-
-  isTestingOrigin: function(aURI) {
-    if (Services.prefs.getPrefType(PREF_TEST_WHITELIST) != Services.prefs.PREF_STRING) {
-      return false;
-    }
-
-    // Add any testing origins (comma-seperated) to the whitelist for the session.
-    for (let origin of Services.prefs.getCharPref(PREF_TEST_WHITELIST).split(",")) {
-      try {
-        let testingURI = Services.io.newURI(origin, null, null);
-        if (aURI.prePath == testingURI.prePath) {
-          return true;
-        }
-      } catch (ex) {
-        Cu.reportError(ex);
-      }
-    }
-    return false;
-  },
-
-  // This function is copied from UITour.jsm.
-  isSafeScheme: function(aURI) {
-    let allowedSchemes = new Set(["https", "about"]);
-    if (!Services.prefs.getBoolPref("browser.uitour.requireSecure"))
-      allowedSchemes.add("http");
-
-    if (!allowedSchemes.has(aURI.scheme))
-      return false;
-
-    return true;
-  },
-
-  ensureTrustedOrigin: function() {
-    if (content.top != content)
-      return false;
-
-    let uri = content.document.documentURIObject;
-
-    if (uri.schemeIs("chrome"))
-      return true;
-
-    if (!this.isSafeScheme(uri))
-      return false;
-
-    let permission = Services.perms.testPermission(uri, UITOUR_PERMISSION);
-    if (permission == Services.perms.ALLOW_ACTION)
-      return true;
-
-    return this.isTestingOrigin(uri);
-  },
-
-  receiveMessage: function(aMessage) {
-    switch (aMessage.name) {
-      case "UITour:SendPageCallback":
-        this.sendPageEvent("Response", aMessage.data);
-        break;
-      case "UITour:SendPageNotification":
-        this.sendPageEvent("Notification", aMessage.data);
-        break;
-      }
-  },
-
-  sendPageEvent: function (type, detail) {
-    if (!this.ensureTrustedOrigin()) {
-      return;
-    }
-
-    let doc = content.document;
-    let eventName = "mozUITour" + type;
-    let event = new doc.defaultView.CustomEvent(eventName, {
-      bubbles: true,
-      detail: Cu.cloneInto(detail, doc.defaultView)
-    });
-    doc.dispatchEvent(event);
-  }
-};
-
-addEventListener("mozUITour", UITourListener, false, true);
diff --git a/browser/components/uitour/jar.mn b/browser/components/uitour/jar.mn
deleted file mode 100644
index 966a69c966..0000000000
--- a/browser/components/uitour/jar.mn
+++ /dev/null
@@ -1,6 +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.jar:
-       content/browser/content-UITour.js
diff --git a/browser/components/uitour/moz.build b/browser/components/uitour/moz.build
deleted file mode 100644
index c8b1450b99..0000000000
--- a/browser/components/uitour/moz.build
+++ /dev/null
@@ -1,9 +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/.
-
-EXTRA_JS_MODULES += [
-    'UITour.jsm',
-]
-
-JAR_MANIFESTS += ['jar.mn']
diff --git a/browser/locales/en-US/chrome/browser/baseMenuOverlay.dtd b/browser/locales/en-US/chrome/browser/baseMenuOverlay.dtd
index de92ad3aab..1079c3cef3 100644
--- a/browser/locales/en-US/chrome/browser/baseMenuOverlay.dtd
+++ b/browser/locales/en-US/chrome/browser/baseMenuOverlay.dtd
@@ -37,9 +37,6 @@
 <!ENTITY helpFeedbackPage.label      "Submit Feedback…">
 <!ENTITY helpFeedbackPage.accesskey  "S">
 
-<!ENTITY helpShowTour2.label            "&brandShorterName; Tour">
-<!ENTITY helpShowTour2.accesskey        "o">
-
 <!ENTITY preferencesCmdMac.label        "Preferences…">
 <!ENTITY preferencesCmdMac.commandkey   ",">
 
diff --git a/browser/locales/en-US/chrome/browser/browser.dtd b/browser/locales/en-US/chrome/browser/browser.dtd
index 1045977e87..0b2e41612f 100644
--- a/browser/locales/en-US/chrome/browser/browser.dtd
+++ b/browser/locales/en-US/chrome/browser/browser.dtd
@@ -828,8 +828,6 @@ you can use these alternative items. Otherwise, their values should be empty.  -
      a CSS length value. -->
 <!ENTITY pluginNotification.width "28em">
 
-<!ENTITY uiTour.infoPanel.close "Close">
-
 <!ENTITY appMenuSidebars.label         "Sidebars">
 
 <!-- LOCALIZATION NOTE: (panicButton.view.mainTimeframeDesc, panicButton.view.5min, panicButton.view.2hr, panicButton.view.day):
diff --git a/browser/locales/en-US/chrome/browser/browser.properties b/browser/locales/en-US/chrome/browser/browser.properties
index f514efb86a..aa74af511a 100644
--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -606,13 +606,6 @@ flashHang.message = %S changed some Adobe Flash settings to improve performance.
 flashHang.helpButton.label = Learn More…
 flashHang.helpButton.accesskey = L
 
-# LOCALIZATION NOTE(customizeTips.tip0): %1$S will be replaced with the text defined
-# in customizeTips.tip0.hint, %2$S will be replaced with brandShortName, %3$S will
-# be replaced with a hyperlink containing the text defined in customizeTips.tip0.learnMore.
-customizeTips.tip0 = %1$S: You can customize %2$S to work the way you do. Simply drag any of the above to the menu or toolbar. %3$S about customizing %2$S.
-customizeTips.tip0.hint = Hint
-customizeTips.tip0.learnMore = Learn more
-
 # LOCALIZATION NOTE (customizeMode.tabTitle): %S is brandShortName
 customizeMode.tabTitle = Customize %S
 
diff --git a/browser/modules/BrowserUITelemetry.jsm b/browser/modules/BrowserUITelemetry.jsm
index 2ad319f1a4..2b7cc8c204 100644
--- a/browser/modules/BrowserUITelemetry.jsm
+++ b/browser/modules/BrowserUITelemetry.jsm
@@ -17,8 +17,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
   "resource:///modules/RecentWindow.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "CustomizableUI",
   "resource:///modules/CustomizableUI.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "UITour",
-  "resource:///modules/UITour.jsm");
 XPCOMUtils.defineLazyGetter(this, "Timer", function() {
   let timer = {};
   Cu.import("resource://gre/modules/Timer.jsm", timer);
@@ -174,11 +172,6 @@ this.BrowserUITelemetry = {
                                          this.getToolbarMeasures.bind(this));
     UITelemetry.addSimpleMeasureFunction("contextmenu",
                                          this.getContextMenuInfo.bind(this));
-    // Ensure that UITour.jsm remains lazy-loaded, yet always registers its
-    // simple measure function with UITelemetry.
-    UITelemetry.addSimpleMeasureFunction("UITour",
-                                         () => UITour.getTelemetry());
-
     UITelemetry.addSimpleMeasureFunction("syncstate",
                                          this.getSyncState.bind(this));
 
diff --git a/browser/modules/SelfSupportBackend.jsm b/browser/modules/SelfSupportBackend.jsm
index 3a3f8cb8bd..961a2af0ac 100644
--- a/browser/modules/SelfSupportBackend.jsm
+++ b/browser/modules/SelfSupportBackend.jsm
@@ -25,8 +25,6 @@ const PREF_ENABLED = "browser.selfsupport.enabled";
 const PREF_URL = "browser.selfsupport.url";
 // Unified Telemetry status.
 const PREF_TELEMETRY_UNIFIED = "toolkit.telemetry.unified";
-// UITour status.
-const PREF_UITOUR_ENABLED = "browser.uitour.enabled";
 
 // Controls the interval at which the self support page tries to reload in case of
 // errors.
@@ -44,8 +42,6 @@ const PREF_LOG_DUMP = PREF_BRANCH_LOG + "dump";
 const HTML_NS = "http://www.w3.org/1999/xhtml";
 const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
 
-const UITOUR_FRAME_SCRIPT = "chrome://browser/content/content-UITour.js";
-
 // Whether the FHR/Telemetry unification features are enabled.
 // Changing this pref requires a restart.
 const IS_UNIFIED_TELEMETRY = Preferences.get(PREF_TELEMETRY_UNIFIED, false);
@@ -90,8 +86,7 @@ var SelfSupportBackendInternal = {
     }
 
     // Make sure UITour is enabled.
-    let uiTourEnabled = Preferences.get(PREF_UITOUR_ENABLED, false);
-    if (!uiTourEnabled) {
+    if (true) {
       this._log.config("init - Disabling SelfSupport because UITour is disabled.");
       return;
     }
@@ -253,9 +248,6 @@ var SelfSupportBackendInternal = {
 
     // Create the hidden browser.
     this._makeHiddenBrowser(url).then(() => {
-      // Load UITour frame script.
-      this._browser.messageManager.loadFrameScript(UITOUR_FRAME_SCRIPT, true);
-
       // We need to watch for load errors as well and, in case, try to reload
       // the self support page.
       const webFlags = Ci.nsIWebProgress.NOTIFY_STATE_WINDOW |
diff --git a/browser/themes/linux/browser.css b/browser/themes/linux/browser.css
index 3e6b81512d..534d148340 100644
--- a/browser/themes/linux/browser.css
+++ b/browser/themes/linux/browser.css
@@ -1543,11 +1543,6 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton:not(:h
   border-left: 3px solid transparent;
 }
 
-/* The :hover:active style from toolkit doesn't seem to work in this panel so just use :active. */
-.customization-tipPanel-closeBox > .close-icon:active {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 48, 16, 32);
-}
-
 /* End customization mode */
 
 
@@ -1556,40 +1551,6 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton:not(:h
   width: 40px;
 }
 
-%include ../shared/UITour.inc.css
-
-#UITourHighlight {
-  /* Below are some fixes for people without an X compositor on Linux.
-     This is why we can't have nice things: */
-  /* Animations don't repaint properly without an X compositor. */
-  animation-name: none !important;
-  /* Opacity rounds to 0 or 1 on Linux without an X compositor so make the
-     background be transparent in that case by having all alpha values < 0.5 */
-  background-image: radial-gradient(50% 100%, rgba(0,149,220,0.3) 50%, rgba(0,149,220,0.49) 100%);
-  /* The highlight isn't anti-aliased without an X compositor so make it thicker.
-     Make it a darker color since we don't have the box-shadow in this case. */
-  border: 4px solid rgb(0,149,220);
-}
-
-#UITourTooltipDescription {
-  font-size: 1.05rem;
-}
-
-#UITourTooltipClose {
-  margin-inline-end: -4px;
-  height: 16px;
-  width: 16px;
-}
-
-/**
- * Override the --arrowpanel-padding so the background extends
- * to the sides and bottom of the panel.
- */
-#UITourTooltipButtons {
-  margin-left: -10px;
-  margin-bottom: -10px;
-}
-
 %include ../shared/contextmenu.inc.css
 
 #context-navigation > .menuitem-iconic > .menu-iconic-left {
diff --git a/browser/themes/osx/browser.css b/browser/themes/osx/browser.css
index 5a83c74b2a..b8d567a598 100644
--- a/browser/themes/osx/browser.css
+++ b/browser/themes/osx/browser.css
@@ -3192,24 +3192,6 @@ menulist.translate-infobar-element > .menulist-dropmarker {
 }
 
 @media (min-resolution: 2dppx) {
-  .customization-tipPanel-infoBox {
-    background-image: url(chrome://browser/skin/customizableui/info-icon-customizeTip@2x.png);
-    background-size: 25px 25px;
-  }
-
-  .customization-tipPanel-contentImage {
-    list-style-image: url(chrome://browser/skin/customizableui/customize-illustration@2x.png);
-  }
-
-  .customization-tipPanel-contentImage:-moz-locale-dir(rtl) {
-    list-style-image: url(chrome://browser/skin/customizableui/customize-illustration-rtl@2x.png);
-  }
-
-  #customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="left"],
-  #customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="right"] {
-    list-style-image: url("chrome://browser/skin/customizableui/panelarrow-customizeTip@2x.png");
-  }
-
   .customization-lwtheme-menu-theme[defaulttheme] {
     list-style-image: url(chrome://browser/skin/theme-switcher-icon@2x.png);
   }
@@ -3279,24 +3261,6 @@ menulist.translate-infobar-element > .menulist-dropmarker {
   -moz-box-ordinal-group: 0;
 }
 
-%include ../shared/UITour.inc.css
-
-#UITourTooltipDescription {
-  font-size: 1.18rem;
-  line-height: 2rem;
-}
-
-#UITourTooltipClose {
-  margin-inline-end: -10px;
-  margin-top: -14px;
-}
-
-@media (min-resolution: 2dppx) {
-  #UITourTooltipClose > .toolbarbutton-icon {
-    width: 16px;
-  }
-}
-
 %include ../shared/contextmenu.inc.css
 
 #context-navigation > .menuitem-iconic {
diff --git a/browser/themes/shared/UITour.inc.css b/browser/themes/shared/UITour.inc.css
deleted file mode 100644
index bc89ade76f..0000000000
--- a/browser/themes/shared/UITour.inc.css
+++ /dev/null
@@ -1,293 +0,0 @@
-%if 0
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-%endif
-
-/* UI Tour */
-
-#UITourHighlightContainer {
-  -moz-appearance: none;
-  -moz-window-shadow: none;
-  border: none;
-  background-color: transparent;
-  /* This is a buffer to compensate for the movement in the "wobble" effect,
-     and for the box-shadow of #UITourHighlight. */
-  padding: 4px;
-}
-
-#UITourHighlight {
-  background-image: radial-gradient(50% 100%, rgba(0,149,220,0.4) 50%, rgba(0,149,220,0.6) 100%);
-  border-radius: 40px;
-  border: 1px solid white;
-  /* The box-shadow opacity needs to be < 0.5 so it doesn't appear at 100% opacity
-     on Linux without an X compositor where opacity is either 0 or 1. */
-  box-shadow: 0 0 3px 0 rgba(0,0,0,0.49);
-  min-height: 32px;
-  min-width: 32px;
-}
-
-#UITourTooltipBody {
-  -moz-box-align: start;
-}
-
-#UITourTooltipTitleContainer {
-  -moz-box-align: start;
-  margin-bottom: 10px;
-}
-
-#UITourTooltipIcon {
-  width: 48px;
-  height: 48px;
-  margin-inline-end: 10px;
-}
-
-#UITourTooltipTitle,
-#UITourTooltipDescription {
-  max-width: 20rem;
-}
-
-#UITourTooltipTitle {
-  font-size: 1.45rem;
-  font-weight: bold;
-  margin: 0;
-}
-
-#UITourTooltipDescription {
-  margin-inline-start: 0;
-  margin-inline-end: 0;
-  font-size: 1.15rem;
-  line-height: 1.8rem;
-  margin-bottom: 0; /* Override global.css */
-}
-
-#UITourTooltipClose {
-  position: relative;
-  -moz-appearance: none;
-  border: none;
-  background-color: transparent;
-  min-width: 0;
-  margin-inline-start: 4px;
-  margin-top: -2px;
-}
-
-#UITourTooltipClose > .toolbarbutton-text {
-  display: none;
-}
-
-#UITourTooltipButtons {
-  -moz-box-pack: end;
-  background-color: hsla(210,4%,10%,.07);
-  border-top: 1px solid hsla(210,4%,10%,.14);
-  margin: 10px -16px -16px;
-  padding: 16px;
-}
-
-#UITourTooltipButtons > label,
-#UITourTooltipButtons > button {
-  margin: 0 15px;
-}
-
-#UITourTooltipButtons > label:first-child,
-#UITourTooltipButtons > button:first-child {
-  margin-inline-start: 0;
-}
-
-#UITourTooltipButtons > label:last-child,
-#UITourTooltipButtons > button:last-child {
-  margin-inline-end: 0;
-}
-
-#UITourTooltipButtons > button[image] > .button-box > .button-icon {
-  width: 16px;
-  height: 16px;
-  margin-inline-end: 5px;
-}
-
-#UITourTooltipButtons > label,
-#UITourTooltipButtons > button .button-text {
-  font-size: 1.15rem;
-}
-
-#UITourTooltipButtons > button:not(.button-link) {
-  -moz-appearance: none;
-  background-color: rgb(251,251,251);
-  border-radius: 3px;
-  border: 1px solid;
-  border-color: rgb(192,192,192);
-  color: rgb(71,71,71);
-  padding: 4px 30px;
-  transition-property: background-color, border-color;
-  transition-duration: 150ms;
-}
-
-#UITourTooltipButtons > button:not(.button-link):not(:active):hover {
-  background-color: hsla(210,4%,10%,.15);
-  border-color: hsla(210,4%,10%,.15);
-  box-shadow: 0 1px 0 0 hsla(210,4%,10%,.05) inset;
-}
-
-#UITourTooltipButtons > label,
-#UITourTooltipButtons > button.button-link {
-  -moz-appearance: none;
-  background: transparent;
-  border: none;
-  box-shadow: none;
-  color: rgba(0,0,0,0.35);
-  padding-left: 10px;
-  padding-right: 10px;
-}
-
-#UITourTooltipButtons > button.button-link:hover {
-  color: black;
-}
-
-/* The primary button gets the same color as the customize button. */
-#UITourTooltipButtons > button.button-primary {
-  background-color: rgb(116,191,67);
-  color: white;
-  padding-left: 30px;
-  padding-right: 30px;
-}
-
-#UITourTooltipButtons > button.button-primary:not(:active):hover {
-  background-color: rgb(105,173,61);
-}
-
-/* Notification overrides for Heartbeat UI */
-
-notification.heartbeat {
-%ifdef XP_MACOSX
-  background-image: linear-gradient(-179deg, #FBFBFB 0%, #EBEBEB 100%);
-%else
-  background-color: #F1F1F1;
-%endif
-  border-bottom: 1px solid #C1C1C1;
-  height: 40px;
-}
-
-/* In themes/osx/global/notification.css the close icon is inverted because notifications
-   on OSX are usually dark. Heartbeat is light, so override that behaviour. */
-
-%ifdef XP_MACOSX
-notification.heartbeat[type="info"] .close-icon:not(:hover) {
-  -moz-image-region: rect(0, 16px, 16px, 0px) !important;
-}
-@media (min-resolution: 2dppx) {
-  notification.heartbeat[type="info"] .close-icon:not(:hover) {
-    -moz-image-region: rect(0, 32px, 32px, 0px) !important;
-  }
-}
-%endif
-
-@keyframes pulse-onshow {
- 0% {
-   opacity: 0;
-   transform: scale(1.0);
- }
- 25% {
-   opacity: 1;
-   transform: scale(1.1);
- }
- 50% {
-   transform: scale(1.0);
- }
- 75% {
-   transform: scale(1.1);
- }
- 100% {
-   transform: scale(1.0);
- }
-}
-
-@keyframes pulse-twice {
- 0% {
-   transform: scale(1.1);
- }
- 50% {
-   transform: scale(0.8);
- }
- 100% {
-   transform: scale(1);
- }
-}
-
-.messageText.heartbeat {
-  color: #333333;
-  text-shadow: none;
-  margin-inline-start: 0px;
-  /* The !important is required to override OSX default style. */
-  margin-inline-end: 12px !important;
-}
-
-.messageImage.heartbeat {
-  width: 24px;
-  height: 24px;
-  margin-inline-start: 8px;
-  margin-inline-end: 8px;
-}
-
-.messageImage.heartbeat.pulse-onshow {
-  animation-name: pulse-onshow;
-  animation-duration: 1.5s;
-  animation-iteration-count: 1;
-  animation-timing-function: cubic-bezier(.7,1.8,.9,1.1);
-}
-
-.messageImage.heartbeat.pulse-twice {
-  animation-name: pulse-twice;
-  animation-duration: 1s;
-  animation-iteration-count: 2;
-  animation-timing-function: linear;
-}
-
-/* Learn More link styles */
-.heartbeat > .text-link {
-  color: #0095DD;
-  margin-inline-start: 0px;
-}
-
-.heartbeat > .text-link:hover {
-  color: #008ACB;
-  text-decoration: none;
-}
-
-.heartbeat > .text-link:hover:active {
-  color: #006B9D;
-}
-
-/* Heartbeat UI Rating Star Classes */
-.heartbeat > #star-rating-container {
-  display: -moz-box;
-  margin-bottom: 4px;
-}
-
-.heartbeat > #star-rating-container > #star5 {
-  -moz-box-ordinal-group: 5;
-}
-
-.heartbeat > #star-rating-container > #star4 {
-  -moz-box-ordinal-group: 4;
-}
-
-.heartbeat > #star-rating-container > #star3 {
-  -moz-box-ordinal-group: 3;
-}
-
-.heartbeat > #star-rating-container > #star2 {
-  -moz-box-ordinal-group: 2;
-}
-
-.heartbeat > #star-rating-container > .star-x  {
-  background: url("chrome://browser/skin/heartbeat-star-off.svg");
-  cursor: pointer;
-  /* Overrides the margin-inline-end for all platforms defined in the .plain class */
-  margin-inline-end: 4px !important;
-  width: 16px;
-  height: 16px;
-}
-
-.heartbeat > #star-rating-container > .star-x:hover,
-.heartbeat > #star-rating-container > .star-x:hover ~ .star-x {
-  background: url("chrome://browser/skin/heartbeat-star-lit.svg");
-}
diff --git a/browser/themes/shared/customizableui/customizeMode.inc.css b/browser/themes/shared/customizableui/customizeMode.inc.css
index 48681d9f3c..d99933388e 100644
--- a/browser/themes/shared/customizableui/customizeMode.inc.css
+++ b/browser/themes/shared/customizableui/customizeMode.inc.css
@@ -457,5 +457,3 @@ toolbarpaletteitem[place="toolbar"]:not([mousedown="true"]):-moz-focusring {
 .customization-lwtheme-menu-footeritem:first-child {
   border-inline-end: 1px solid var(--panel-separator-color);
 }
-
-%include customizeTip.inc.css
diff --git a/browser/themes/shared/customizableui/customizeTip.inc.css b/browser/themes/shared/customizableui/customizeTip.inc.css
deleted file mode 100644
index 26c6ee1ea0..0000000000
--- a/browser/themes/shared/customizableui/customizeTip.inc.css
+++ /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/. */
-
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-  margin: 0;
-  min-width: 400px;
-  max-width: 1000px;
-  min-height: 200px;
-  border-radius: 3px;
-  background-image: linear-gradient(90deg, #a0dfff 0%, #ceeeff 100%);
-  border: 0px solid rgba(0,148,221,.5);
-  box-shadow: 0 1px 5px 0 rgba(0,0,0,.5), inset 0 1px 1px 0 #fff;
-  color: rgb(51,51,51);
-}
-
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowcontent:-moz-locale-dir(rtl) {
-  background-image: linear-gradient(90deg, #ceeeff 0%, #a0dfff 100%);
-}
-
-.customization-tipPanel-infoBox {
-  margin: 20px 25px 25px;
-  width: 25px;
-  background-image: url(chrome://browser/skin/customizableui/info-icon-customizeTip.png);
-  background-repeat: no-repeat;
-}
-
-.customization-tipPanel-content {
-  margin: 25px 0;
-  font-size: 12px;
-  line-height: 18px;
-}
-
-.customization-tipPanel-em {
-  margin: 0;
-  font-weight: bold;
-}
-
-.customization-tipPanel-contentImage {
-  margin-top: 25px;
-  list-style-image: url(chrome://browser/skin/customizableui/customize-illustration.png);
-  min-width: 300px;
-  max-width: 300px;
-  min-height: 190px;
-  max-height: 190px;
-  display: -moz-box;
-}
-
-.customization-tipPanel-contentImage:-moz-locale-dir(rtl) {
-  list-style-image: url(chrome://browser/skin/customizableui/customize-illustration-rtl.png);
-}
-
-.customization-tipPanel-link {
-  -moz-appearance: none;
-  background: transparent;
-  border: none;
-  box-shadow: none;
-  color: rgb(25,82,171);
-  margin: 0;
-  cursor: pointer;
-}
-
-.customization-tipPanel-link > .button-box > .button-text {
-  margin: 0 !important;
-}
-
-.customization-tipPanel-closeBox > .close-icon {
-  -moz-appearance: none;
-  border: 0;
-  margin-inline-end: -25px;
-}
-
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="left"],
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="right"] {
-  list-style-image: url("chrome://browser/skin/customizableui/panelarrow-customizeTip.png");
-}
diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index 547bbf12a9..343a8e2b34 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -2431,14 +2431,6 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
   border-bottom: 1px solid @toolbarShadowColor@;
 }
 
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="left"] {
-  margin-right: -2px;
-}
-
-#customization-tipPanel > .panel-arrowcontainer > .panel-arrowbox > .panel-arrow[side="right"] {
-  margin-left: -2px;
-}
-
 /* End customization mode */
 
 /* Private browsing indicators */
@@ -2542,18 +2534,6 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
 
 /* End private browsing indicators */
 
-%include ../shared/UITour.inc.css
-
-#UITourTooltipButtons {
-  /**
-   * Override the --arrowpanel-padding so the background extends
-   * to the sides and bottom of the panel.
-   */
-  margin-left: -10px;
-  margin-right: -10px;
-  margin-bottom: -10px;
-}
-
 %include ../shared/contextmenu.inc.css
 
 #context-navigation {
diff --git a/testing/profiles/prefs_general.js b/testing/profiles/prefs_general.js
index d30ae89f5d..515828d298 100644
--- a/testing/profiles/prefs_general.js
+++ b/testing/profiles/prefs_general.js
@@ -297,10 +297,6 @@ user_pref("browser.aboutHomeSnippets.updateUrl", "nonexistent://test");
 user_pref("browser.newtabpage.directory.source", 'data:application/json,{"testing":1}');
 user_pref("browser.newtabpage.directory.ping", "");
 
-// Ensure UITour won't hit the network
-user_pref("browser.uitour.pinnedTabUrl", "http://%(server)s/uitour-dummy/pinnedTab");
-user_pref("browser.uitour.url", "http://%(server)s/uitour-dummy/tour");
-
 // Tell the search service we are running in the US.  This also has the desired
 // side-effect of preventing our geoip lookup.
 user_pref("browser.search.isUS", true);