Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/app_remoting/js/app_remoting.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
  * This class implements the functionality that is specific to application
  * remoting ("AppRemoting" or AR).
  */
 
@@ skipping 222 matching lines @@
   function ping() {
     var message = { timestamp: new Date().getTime() };
     clientSession.sendClientMessage('pingRequest', JSON.stringify(message));
   };
   ping();
   var timerId = window.setInterval(ping, 10 * 1000);
 
   // Cancel the ping when the connection closes.
   clientSession.addEventListener(
       remoting.ClientSession.Events.stateChanged,
-      /** @param {remoting.ClientSession.StateEvent} state */
+      /** @param {remoting.ClientSession.StateEvent=} state */
       function(state) {
         if (state.current === remoting.ClientSession.State.CLOSED ||
             state.current === remoting.ClientSession.State.FAILED) {
           window.clearInterval(timerId);
         }
       });
 };
 
 /**
  * Called when the current session has been disconnected.
@@ skipping 93 matching lines @@
   remoting.MessageWindow.showErrorMessage(
       chrome.i18n.getMessage(/**i18n-content*/'CONNECTION_FAILED'),
       chrome.i18n.getMessage(/** @type {string} */ (errorTag)));
 };
 
 /** @return {string} */
 remoting.AppRemoting.prototype.runApplicationUrl = function() {
   return remoting.settings.APP_REMOTING_API_BASE_URL + '/applications/' +
       remoting.settings.getAppRemotingApplicationId() + '/run';
 };