[Chromoting] The webapp revokes OAuth refresh tokens when they will no longer be used.

remoting/webapp/host_controller.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.
 
 'use strict';
 
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
 /** @constructor */
@@ skipping 138 matching lines @@
   /** @param {string} privateKey
    *  @param {XMLHttpRequest} xhr */
   function onRegistered(privateKey, xhr) {
     var success = (xhr.status == 200);
 
     if (success) {
       var hostSecretHash =
           'hmac:' + that.plugin_.getPinHash(newHostId, hostPin);
       var hostConfig = JSON.stringify({
           xmpp_login: remoting.oauth2.getCachedEmail(),
-          oauth_refresh_token: remoting.oauth2.getRefreshToken(),
+          oauth_refresh_token: remoting.oauth2.exportRefreshToken(),
           host_id: newHostId,
           host_name: hostName,
           host_secret_hash: hostSecretHash,
           private_key: privateKey
       });
       /** @param {remoting.HostController.AsyncResult} result */
       var onStartDaemon = function(result) {
         onStarted(callback, result, hostName);
       };
       that.plugin_.startDaemon(hostConfig, onStartDaemon);
@@ skipping 138 matching lines @@
   if (hostId && typeof(hostId) == 'string') {
     this.setHost(hostList.getHostForId(/** @type{string} */(hostId)));
   } else {
     this.setHost(null);
   }
   onDone();
 };
 
 /** @type {remoting.HostController} */
 remoting.hostController = null;