Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/app_remoting/js/window_activation_menu.js

 // Copyright 2014 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.
 
 /**
  * @fileoverview
  * Class to update the application's context menu to include host-side windows
  * and to notify the host when one of these menu items is selected.
  */
 
@@ skipping 48 matching lines @@
  * @return {string}
  * @private
  */
 remoting.WindowActivationMenu.prototype.makeMenuId_ = function(windowId) {
   return 'window-' + windowId;
 };
 
 /**
  * Handle a click on the application's context menu.
  *
- * @param {OnClickData} info
+ * @param {OnClickData=} info
  * @private
  */
 remoting.WindowActivationMenu.prototype.onContextMenu_ = function(info) {
   /** @type {Array.<string>} */
   var components = info.menuItemId.split('-');
   if (components.length == 2 &&
       this.makeMenuId_(parseInt(components[1], 10)) == info.menuItemId) {
     remoting.clientSession.sendClientMessage(
         'activateWindow',
         JSON.stringify({ id: parseInt(components[1], 0) }));
     if (chrome.app.window.current().isMinimized()) {
       chrome.app.window.current().restore();
     }
   }
 };