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 450 matching lines @@
 /**
  * Continue an IT2Me connection once an access token has been obtained.
  *
  * @param {string} token An OAuth2 access token.
  * @return {void} Nothing.
  * @private
  */
 remoting.SessionConnectorImpl.prototype.connectIT2MeWithToken_ =
     function(token) {
   // Resolve the host id to get the host JID.
-  this.pendingXhr_ = remoting.xhr.get(
-      remoting.settings.DIRECTORY_API_BASE_URL + '/support-hosts/' +
-          encodeURIComponent(this.hostId_),
-      this.onIT2MeHostInfo_.bind(this),
-      '',
-      { 'Authorization': 'OAuth ' + token });
+  this.pendingXhr_ = remoting.xhr.start({
+    method: 'GET',
+    url: remoting.settings.DIRECTORY_API_BASE_URL + '/support-hosts/' +
+        encodeURIComponent(this.hostId_),
+    onDone: this.onIT2MeHostInfo_.bind(this),
+    oauthToken: token
+  });
 };
 
 /**
  * Continue an IT2Me connection once the host JID has been looked up.
  *
  * @param {XMLHttpRequest} xhr The server response to the support-hosts query.
  * @return {void} Nothing.
  * @private
  */
 remoting.SessionConnectorImpl.prototype.onIT2MeHostInfo_ = function(xhr) {
@@ skipping 168 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);
 };