[Chromoting] Remove extra comma after last element in JS dict.

remoting/webapp/app_remoting/js/app_remoting.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.
 
 /**
  * @fileoverview
  * This class implements the functionality that is specific to application
  * remoting ("AppRemoting" or AR).
  */
 
@@ skipping 172 matching lines @@
       }
     }
   };
 
   /** @param {string} token */
   var getAppHost = function(token) {
     remoting.xhr.start({
       method: 'POST',
       url: that.runApplicationUrl(),
       onDone: parseAppHostResponse,
-      oauthToken: token,
+      oauthToken: token
     });
   };
 
   /** @param {remoting.Error} error */
   var onError = function(error) {
     that.handleError(error);
   };
 
   remoting.LoadingWindow.show();
 
@@ skipping 142 matching lines @@
  * @param {remoting.Error} errorTag The error to be localized and displayed.
  * @return {void} Nothing.
  */
 remoting.AppRemoting.prototype.handleError = function(errorTag) {
   console.error('Connection failed: ' + errorTag);
   remoting.LoadingWindow.close();
   remoting.MessageWindow.showErrorMessage(
       chrome.i18n.getMessage(/*i18n-content*/'CONNECTION_FAILED'),
       chrome.i18n.getMessage(/** @type {string} */ (errorTag)));
 };