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

remoting/webapp/toolbar.js

 // Copyright (c) 2012 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 client tool-bar.
  */
 
 'use strict';
@@ skipping 34 matching lines @@
   /**
    * @type {remoting.OptionsMenu}
    * @private
    */
   this.optionsMenu_ = new remoting.OptionsMenu(
       document.getElementById('send-ctrl-alt-del'),
       document.getElementById('send-print-screen'),
       document.getElementById('screen-resize-to-client'),
       document.getElementById('screen-shrink-to-fit'),
       document.getElementById('new-connection'),
-      document.getElementById('toggle-full-screen'));
+      document.getElementById('toggle-full-screen'),
+      null);
 
   window.addEventListener('mousemove', remoting.Toolbar.onMouseMove, false);
   window.addEventListener('resize', this.center.bind(this), false);
 
   registerEventListener('toolbar-disconnect', 'click', remoting.disconnect);
   registerEventListener('toolbar-stub', 'click',
       function() { remoting.toolbar.toggle(); });
 
   // Prevent the preview canceling if the user is interacting with the tool-bar.
   /** @type {remoting.Toolbar} */
@@ skipping 91 matching lines @@
   }
 };
 
 /** @type {remoting.Toolbar} */
 remoting.toolbar = null;
 
 /** @private */
 remoting.Toolbar.STUB_EXTENDED_CLASS_ = 'toolbar-stub-extended';
 /** @private */
 remoting.Toolbar.VISIBLE_CLASS_ = 'toolbar-visible';