Changed identity API to use promises instead of callbacks.

remoting/webapp/crd/js/host_screen.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
  * Functions related to the 'host screen' for Chromoting.
  */
 
 /** @suppress {duplicate} */
@@ skipping 56 matching lines @@
   };
 
   tryInitializeFacade();
 };
 
 /**
  * @param {remoting.It2MeHostFacade} hostFacade An initialized It2MeHostFacade.
  */
 remoting.startHostUsingFacade_ = function(hostFacade) {
   console.log('Attempting to share...');
-  remoting.identity.callWithToken(
+  remoting.identity.getToken().then(
       remoting.tryShareWithToken_.bind(null, hostFacade),
-      remoting.showErrorMessage);
+      remoting.Error.handler(remoting.showErrorMessage));
 }
 
 /**
  * @param {remoting.It2MeHostFacade} hostFacade An initialized
  *     It2MeHostFacade.
  * @param {string} token The OAuth access token.
  * @private
  */
 remoting.tryShareWithToken_ = function(hostFacade, token) {
   lastShareWasCancelled_ = false;
@@ skipping 240 matching lines @@
 function onNatTraversalPolicyChanged_(enabled) {
   var natBox = document.getElementById('nat-box');
   if (enabled) {
     natBox.classList.add('traversal-enabled');
   } else {
     natBox.classList.remove('traversal-enabled');
   }
 }
 
 })();