Updated XHR API so call sites are more descriptive.

remoting/webapp/crd/js/dns_blackhole_checker.js

 // Copyright 2015 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 || {};
 
 (function() {
@@ skipping 67 matching lines @@
  * @param {string} username
  * @param {string} authToken
  */
 remoting.DnsBlackholeChecker.prototype.connect = function(server,
                                                           username,
                                                           authToken) {
   base.debug.assert(this.onStateChangedCallback_ != null);
 
   this.signalStrategy_.connect(server, username, authToken);
 
-  this.xhr_ =
-      remoting.xhr.get(remoting.DnsBlackholeChecker.URL_TO_REQUEST_,
-                       this.onHttpRequestDone_.bind(this));
+  this.xhr_ = remoting.xhr.start({
+    method: 'GET',
+    url: remoting.DnsBlackholeChecker.URL_TO_REQUEST_,
+    onDone: this.onHttpRequestDone_.bind(this)
+  });
 };
 
 remoting.DnsBlackholeChecker.prototype.getState = function() {
   return this.state_;
 };
 
 remoting.DnsBlackholeChecker.prototype.getError = function() {
   if (this.blackholeState_ == BlackholeState.BLOCKED) {
     return remoting.Error.NOT_AUTHORIZED;
   }
@@ skipping 77 matching lines @@
  * @private
  */
 remoting.DnsBlackholeChecker.prototype.setState_ = function(newState) {
   if (this.state_ != newState) {
     this.state_ = newState;
     this.onStateChangedCallback_(this.state_);
   }
 };
 
 }());