Bug 1381853 - lazy load browser-sync.js into the browser window, r=mconley.

browser/base/content/browser-sync.js

@@ -2,6 +2,9 @@
  * 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/. */
 
+// This file is loaded into the browser window scope.
+/* eslint-env mozilla/browser-window */
+
 Cu.import("resource://services-sync/UIState.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "EnsureFxAccountsWebChannel",

browser/base/content/browser.js

@@ -132,6 +132,8 @@ XPCOMUtils.defineLazyScriptGetter(this, ["SocialUI",
                                          "SocialShare",
                                          "SocialActivationListener"],
                                   "chrome://browser/content/browser-social.js");
+XPCOMUtils.defineLazyScriptGetter(this, "gSync",
+                                  "chrome://browser/content/browser-sync.js");
 
 
 // lazy service getters
@@ -1966,7 +1968,9 @@ if (AppConstants.platform == "macosx") {
     gPrivateBrowsingUI.init();
 
     // initialize the sync UI
-    gSync.init();
+    requestIdleCallback(() => {
+      gSync.init();
+    }, {timeout: 1000 * 5});
 
     if (AppConstants.E10S_TESTING_ONLY) {
       gRemoteTabsUI.init();

browser/base/content/global-scripts.inc

@@ -16,7 +16,6 @@
 <script type="application/javascript" src="chrome://browser/content/browser-places.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-plugins.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-sidebar.js"/>
-<script type="application/javascript" src="chrome://browser/content/browser-sync.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-tabsintitlebar.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-thumbnails.js"/>
 <script type="application/javascript" src="chrome://browser/content/browser-trackingprotection.js"/>

browser/base/content/test/sync/head.js

@@ -1,6 +1,8 @@
 /* global sinon */
 Services.scriptloader.loadSubScript("resource://testing-common/sinon-2.3.2.js");
 
+Cu.import("resource://services-sync/UIState.jsm", this);
+
 registerCleanupFunction(function() {
   delete window.sinon;
 });

browser/base/content/test/urlbar/browser_page_action_menu.js

@@ -7,6 +7,8 @@ registerCleanupFunction(function() {
   delete window.sinon;
 });
 
+Cu.import("resource://services-sync/UIState.jsm");
+
 const mockRemoteClients = [
   { id: "0", name: "foo", type: "mobile" },
   { id: "1", name: "bar", type: "desktop" },

browser/base/content/web-panels.xul

@@ -23,7 +23,6 @@
   <script type="application/javascript" src="chrome://global/content/contentAreaUtils.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser-places.js"/>
-  <script type="application/javascript" src="chrome://browser/content/browser-sync.js"/>
   <script type="application/javascript" src="chrome://browser/content/nsContextMenu.js"/>
   <script type="application/javascript" src="chrome://browser/content/web-panels.js"/>
 

browser/base/content/webext-panels.xul

@@ -24,7 +24,6 @@
   <script type="application/javascript" src="chrome://global/content/contentAreaUtils.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser.js"/>
   <script type="application/javascript" src="chrome://browser/content/browser-places.js"/>
-  <script type="application/javascript" src="chrome://browser/content/browser-sync.js"/>
   <script type="application/javascript" src="chrome://browser/content/nsContextMenu.js"/>
   <script type="application/javascript" src="chrome://browser/content/webext-panels.js"/>
 

browser/components/uitour/test/browser_fxa.js

@@ -5,6 +5,8 @@
 
 var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
 
+Cu.import("resource://services-sync/UIState.jsm");
+
 XPCOMUtils.defineLazyModuleGetter(this, "fxAccounts",
                                   "resource://gre/modules/FxAccounts.jsm");