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

remoting/webapp/plugin_settings.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.
 
 // Contains all the settings that may need massaging by the build script.
 // Keeping all that centralized here allows us to use symlinks for the other
 // files making for a faster compile/run cycle when only modifying HTML/JS.
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /**
  * @type {string} The MIME type of the Host plugin.
  */
 remoting.PLUGIN_MIMETYPE = 'HOST_PLUGIN_MIMETYPE';
 
 /**
  * @type {string} The OAuth2 redirect URL.
  * @private
  */
 remoting.OAuth2.prototype.REDIRECT_URI_ = 'OAUTH2_REDIRECT_URL';
+
+// Constants for parameters used in retrieving the OAuth2 credentials.
+/** @private */
+remoting.OAuth2.prototype.CLIENT_ID_ = 'API_CLIENT_ID';
+/** @private */
+remoting.OAuth2.prototype.CLIENT_SECRET_ = 'API_CLIENT_SECRET';