ServiceWorker: support Response.{status,statusText,headers} [chromium] (1/3)

content/test/data/service_worker/sync.js

 // Copyright 2014 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.
 
 var code = 404;
 
 this.onfetch = function(event) {
     response = new Response({
-        statusCode: code,
-        statusText: 'OK',
-        method: 'GET',
-        headers: {
-            'Content-Language': 'fi',
-            'Content-Type': 'text/html; charset=UTF-8'
-        }
+        status: code,
+        statusText: 'OK'
     });
 
     event.respondWith(new Promise(function(r) {
         setTimeout(function() { r(response); }, 5);
     }));
 };
 
 this.onsync = function(event) {
     code = 200;
-};
+};