Allow the background page to get an OAuth token for apps v1.

remoting/remoting_webapp_files.gypi

 # 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.
 
 {
   'variables': {
     'remoting_webapp_info_files': [
       'resources/chromoting16.webp',
       'resources/chromoting48.webp',
       'resources/chromoting128.webp',
@@ skipping 195 matching lines @@
       'webapp/crd/js/background.js',
       'webapp/crd/js/client_session.js',
       'webapp/crd/js/error.js',
       'webapp/crd/js/host_installer.js',
       'webapp/crd/js/host_session.js',
       'webapp/crd/js/it2me_helpee_channel.js',
       'webapp/crd/js/it2me_helper_channel.js',
       'webapp/crd/js/it2me_host_facade.js',
       'webapp/crd/js/it2me_service.js',
       'webapp/crd/js/l10n.js',
+      'webapp/crd/js/oauth2.js',
+      'webapp/crd/js/oauth2_api.js',
       'webapp/crd/js/plugin_settings.js',
       'webapp/crd/js/typecheck.js',
+      'webapp/crd/js/xhr.js',
     ],
 
     # The JavaScript files required by wcs_sandbox.html.
     'remoting_webapp_wcs_sandbox_html_js_files': [
       '<@(remoting_webapp_js_wcs_sandbox_files)',
       'webapp/crd/js/error.js',
       'webapp/crd/js/plugin_settings.js',
     ],
 
     # All the JavaScript files required by the webapp.
@@ skipping 81 matching lines @@
       'webapp/crd/html/dialog_token_refresh_failed.html',
       'webapp/crd/html/toolbar.html',
       'webapp/crd/html/ui_header.html',
       'webapp/crd/html/ui_it2me.html',
       'webapp/crd/html/ui_me2me.html',
       'webapp/crd/html/window_frame.html',
     ],
 
   },
 }