Updated XHR API so call sites are more descriptive.

remoting/webapp/crd/js/session_connector_impl.js

 // Copyright 2013 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
  * Connect set-up state machine for Me2Me and IT2Me
  */
 
 'use strict';
@@ skipping 92 matching lines @@
 
   /** @private {remoting.ClientPlugin} */
   this.plugin_ = null;
 
   /** @private {remoting.ClientSession} */
   this.clientSession_ = null;
 
   /** @private {remoting.DesktopConnectedView} */
   this.connectedView_ = null;
 
-  /** @private {XMLHttpRequest} */
+  /** @private {remoting.Xhr} */
   this.pendingXhr_ = null;
 
   /** @private {remoting.CredentialsProvider} */
   this.credentialsProvider_ = null;
 };
 
 /**
  * Initiate a Me2Me connection.
  *
  * This doesn't report host-offline errors because the connection will
@@ skipping 200 matching lines @@
   var pluginContainer = this.clientContainer_.querySelector(
       '.client-plugin-container');
 
   this.plugin_ = remoting.ClientPlugin.factory.createPlugin(
       pluginContainer, this.onExtensionMessage_, this.requiredCapabilities_);
 
   var that = this;
   this.host_.options.load().then(function(){
     that.plugin_.initialize(that.onPluginInitialized_.bind(that));
   });
+  this.pendingXhr_.then(this.onIT2MeHostInfo_.bind(this, hostId));
 };
 
 /**
  * @param {boolean} initialized
+ *     support-hosts query.
  * @private
  */
 remoting.SessionConnectorImpl.prototype.onPluginInitialized_ = function(
     initialized) {
   if (!initialized) {
     console.error('ERROR: remoting plugin not loaded');
     this.pluginError_(remoting.Error.MISSING_PLUGIN);
     return;
   }
 
@@ skipping 148 matching lines @@
  */
 remoting.DefaultSessionConnectorFactory.prototype.createConnector =
     function(clientContainer, onConnected, onError, onExtensionMessage,
              onConnectionFailed, requiredCapabilities, defaultRemapKeys) {
   return new remoting.SessionConnectorImpl(clientContainer, onConnected,
                                            onError, onExtensionMessage,
                                            onConnectionFailed,
                                            requiredCapabilities,
                                            defaultRemapKeys);
 };