[Chromoting] Add ability to enable/disable GDrive support per-app in gyp.

remoting/webapp/crd/js/crd_main.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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /**
@@ skipping 182 matching lines @@
     document.getElementById('browser-test-continue-init').addEventListener(
         'click', remoting.startDesktopRemoting, false);
     document.getElementById('browser-test-deferred-init').hidden = false;
   } else {
     remoting.startDesktopRemoting();
   }
 }
 
 
 remoting.startDesktopRemoting = function() {
-  remoting.app = new remoting.Application();
+  remoting.app = new remoting.Application(remoting.app_features);
   var desktop_remoting = new remoting.DesktopRemoting(remoting.app);
   remoting.app.start();
 };
 
 window.addEventListener('load', remoting.startDesktopRemotingForTesting, false);