The Chromium and Google Chrome builds of the chromoting webapp use different

remoting/webapp/oauth2.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
  * OAuth2 class that handles retrieval/storage of an OAuth2 token.
  *
  * Uses a content script to trampoline the OAuth redirect page back into the
  * extension context.  This works around the lack of native support for
@@ skipping 16 matching lines @@
 // Constants representing keys used for storing persistent state.
 /** @private */
 remoting.OAuth2.prototype.KEY_REFRESH_TOKEN_ = 'oauth2-refresh-token';
 /** @private */
 remoting.OAuth2.prototype.KEY_ACCESS_TOKEN_ = 'oauth2-access-token';
 /** @private */
 remoting.OAuth2.prototype.KEY_EMAIL_ = 'remoting-email';
 
 // Constants for parameters used in retrieving the OAuth2 credentials.
 /** @private */
-remoting.OAuth2.prototype.CLIENT_ID_ =
-      '440925447803-2pi3v45bff6tp1rde2f7q6lgbor3o5uj.' +
-      'apps.googleusercontent.com';
-/** @private */
-remoting.OAuth2.prototype.CLIENT_SECRET_ = 'W2ieEsG-R1gIA4MMurGrgMc_';
-/** @private */
 remoting.OAuth2.prototype.SCOPE_ =
       'https://www.googleapis.com/auth/chromoting ' +
       'https://www.googleapis.com/auth/googletalk ' +
       'https://www.googleapis.com/auth/userinfo#email';
 /** @private */
 remoting.OAuth2.prototype.OAUTH2_TOKEN_ENDPOINT_ =
     'https://accounts.google.com/o/oauth2/token';
 
 /** @return {boolean} True if the app is already authenticated. */
 remoting.OAuth2.prototype.isAuthenticated = function() {
@@ skipping 283 matching lines @@
  * @return {?string} The email address, if it has been cached by a previous call
  *     to getEmail, otherwise null.
  */
 remoting.OAuth2.prototype.getCachedEmail = function() {
   var value = window.localStorage.getItem(this.KEY_EMAIL_);
   if (typeof value == 'string') {
     return value;
   }
   return null;
 };