[AppRemoting] Break out AppRemoting shared module (re-land).

remoting/webapp/app_remoting/js/application_context_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 representing the application's context menu.
  */
 
 'use strict';
@@ skipping 85 matching lines @@
       };
 
       /** @type {remoting.ApplicationContextMenu} */
       var that = this;
 
       /** @param {chrome.app.window.AppWindow} consentWindow */
       var onCreate = function(consentWindow) {
         var onLoad = function() {
           var message = {
             method: 'init',
+            appId: remoting.app.getApplicationId(),
             hostId: that.hostId_,
             connectionStats: JSON.stringify(that.stats_.mostRecent()),
             sessionId: that.clientSession_.getLogger().getSessionId()
           };
           consentWindow.contentWindow.postMessage(message, '*');
         };
         consentWindow.contentWindow.addEventListener('load', onLoad, false);
       };
       chrome.app.window.create(
           'feedback_consent.html', windowAttributes, onCreate);
       break;
 
     case remoting.ApplicationContextMenu.kShowStatsId:
       this.stats_.show(info.checked);
       break;
   }
 };
 
 
 /** @type {string} */
 remoting.ApplicationContextMenu.kSendFeedbackId = 'send-feedback';
 
 /** @type {string} */
 remoting.ApplicationContextMenu.kShowStatsId = 'show-stats';