Updated XHR API so call sites are more descriptive.

remoting/webapp/crd/js/session_connector_impl.js

Index: remoting/webapp/crd/js/session_connector_impl.js
diff --git a/remoting/webapp/crd/js/session_connector_impl.js b/remoting/webapp/crd/js/session_connector_impl.js
index fecad39c3ef14fd11421bc78d165f8ca0596e8fb..d8225120d0e7a6d4fee66c6b7689fa18aff4431f 100644
--- a/remoting/webapp/crd/js/session_connector_impl.js
+++ b/remoting/webapp/crd/js/session_connector_impl.js
@@ -468,12 +468,13 @@ remoting.SessionConnectorImpl.prototype.onSignalingState_ = function(state) {
 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
+  });
 };
 
 /**