Add a Record button to the web-app if the host supports video recording.

remoting/webapp/window_frame.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
  * Apps v2 custom title bar implementation
  */
 
 'use strict';
@@ skipping 29 matching lines @@
   /**
    * @type {remoting.OptionsMenu}
    * @private
    */
   this.optionsMenu_ = new remoting.OptionsMenu(
       titleBar.querySelector('.menu-send-ctrl-alt-del'),
       titleBar.querySelector('.menu-send-print-screen'),
       titleBar.querySelector('.menu-resize-to-client'),
       titleBar.querySelector('.menu-shrink-to-fit'),
       titleBar.querySelector('.menu-new-connection'),
-      null);
+      null,
+      titleBar.querySelector('.menu-start-stop-recording'));
 
   /**
    * @type {HTMLElement}
    * @private
    */
   this.title_ = /** @type {HTMLElement} */
       (titleBar.querySelector('.window-title'));
   base.debug.assert(this.title_ != null);
 
   /**
@@ skipping 180 matching lines @@
   var hidePreview = function() {
     target.classList.remove('preview');
   };
   target.classList.add('preview');
   window.setTimeout(hidePreview, kPreviewTimeoutMs);
 };
 
 
 /** @type {remoting.WindowFrame} */
 remoting.windowFrame = null;