Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/base/js/application.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
  * Interface abstracting the Application functionality.
  */
 
 'use strict';
@@ skipping 96 matching lines @@
 };
 
 /**
  * Called when an extension message needs to be handled.
  *
  * @param {string} type The type of the extension message.
  * @param {string} data The payload of the extension message.
  * @return {boolean} Return true if the extension message was recognized.
  */
 remoting.Application.prototype.onExtensionMessage = function(type, data) {
-  var message = /** @type {Object} */base.jsonParseSafe(data);
+  var message = /** @type {Object} */ (base.jsonParseSafe(data));
   if (typeof message != 'object') {
     return false;
   }
 
   // Give the delegate a chance to handle this extension message first.
   if (this.delegate_.handleExtensionMessage(type, message)) {
     return true;
   }
 
   if (remoting.clientSession) {
@@ skipping 106 matching lines @@
  * Called when an error needs to be displayed to the user.
  *
  * @param {remoting.Error} errorTag The error to be localized and displayed.
  * @return {void} Nothing.
  */
 remoting.Application.Delegate.prototype.handleError = function(errorTag) {};
 
 
 /** @type {remoting.Application} */
 remoting.app = null;