sync: Buffer Protocol Events for about:sync page

chrome/browser/resources/sync_internals/chrome_sync.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // require cr.js
 // require cr/event_target.js
 // require cr/util.js
 
 cr.define('chrome.sync', function() {
   'use strict';
@@ skipping 65 matching lines @@
    * @param {string} name The name of the event type.
    * @param {!Object} details A collection of event-specific details.
    */
   var dispatchEvent = function(name, details) {
     var e = new Event(name);
     e.details = details;
     chrome.sync.events.dispatchEvent(e);
   };
 
   /**
+   * Registers to receive a stream of events through
+   * chrome.sync.dispatchEvent().
+   */
+  var registerForEvents = function() {
+    chrome.send('registerForEvents');
+  };
+
+  /**
    * Asks the browser to refresh our snapshot of sync state.  Should result
    * in an onAboutInfoUpdated event being emitted.
    */
   var requestUpdatedAboutInfo = function() {
     chrome.send('requestUpdatedAboutInfo');
   };
 
   /**
    * Asks the browser to send us the list of registered types.  Should result
    * in an onReceivedListOfTypes event being emitted.
    */
   var requestListOfTypes = function() {
     chrome.send('requestListOfTypes');
   };
 
   return {
     makeTimer: makeTimer,
     dispatchEvent: dispatchEvent,
     events: new cr.EventTarget(),
 
+    registerForEvents: registerForEvents,
     requestUpdatedAboutInfo: requestUpdatedAboutInfo,
     requestListOfTypes: requestListOfTypes,
   };
 });