Changed identity API to use promises instead of callbacks.

remoting/webapp/crd/js/client_session.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
  * Class handling creation and teardown of a remoting client session.
  *
  * The ClientSession class controls lifetime of the client plugin
  * object and provides the plugin with the functionality it needs to
@@ skipping 1563 matching lines @@
   /** @type {remoting.ClientSession} */
   var that = this;
 
   /** @param {string} token */
   var sendToken = function(token) {
     remoting.clientSession.sendClientMessage('accessToken', token);
   };
   /** @param {remoting.Error} error */
   var sendError = function(error) {
     console.log('Failed to refresh access token: ' + error);
-  }
-  remoting.identity.callWithNewToken(sendToken, sendError);
+  };
+  remoting.identity.getNewToken().
+      then(sendToken).
+      catch(remoting.Error.handler(sendError));
   window.setTimeout(this.sendGoogleDriveAccessToken_.bind(this),
                     remoting.ACCESS_TOKEN_RESEND_INTERVAL_MS);
 };
 
 /**
  * @return {{width: number, height: number}} The height of the window's client
  *     area. This differs between apps v1 and apps v2 due to the custom window
  *     borders used by the latter.
  * @private
  */
@@ skipping 114 matching lines @@
  * @param {Object} message The parsed extension message data.
  * @return {boolean} True if the message was recognized, false otherwise.
  */
 remoting.ClientSession.prototype.handleExtensionMessage =
     function(type, message) {
   if (this.videoFrameRecorder_) {
     return this.videoFrameRecorder_.handleMessage(type, message);
   }
   return false;
 }