Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/app_remoting/js/keyboard_layouts_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 managing the host's available keyboard layouts, allowing the user to
  * select one that matches the local layout, or auto-selecting based on the
  * current locale.
  */
@@ skipping 148 matching lines @@
  * @return {string}
  * @private
  */
 remoting.KeyboardLayoutsMenu.prototype.makeMenuId_ = function(layout) {
   return 'layout@' + layout;
 };
 
 /**
  * Handle a click on the application's context menu.
  *
- * @param {OnClickData} info
+ * @param {OnClickData=} info
  * @private
  */
 remoting.KeyboardLayoutsMenu.prototype.onContextMenu_ = function(info) {
   /** @type {Array.<string>} */
   var components = info.menuItemId.split('@');
   if (components.length == 2 &&
       this.makeMenuId_(components[1]) == info.menuItemId) {
     this.setLayout_(true, components[1]);
   }
 };
 
 /**
  * @type {string}
  * @private
  */
 remoting.KeyboardLayoutsMenu.KEY_ = 'preferred-keyboard-layout';