GTTF: convert some tests in chrome to use EmbeddedTestServer patch nr 1

chrome/test/data/extensions/api_test/app_process/test.html

 <script>
 // Copyright (c) 2010 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 origin = "http://localhost:1337/files/extensions/api_test/app_process/";
+var origin = "http://localhost:1337/extensions/api_test/app_process/";
 var url1 = origin + "path1/empty.html";
 var url2 = origin + "path2/empty.html";
 var url3 = origin + "path3/empty.html";
 
 // Create 3 tabs. The first 2 should be grouped into the same app process.
 chrome.tabs.create({url: url1}, function() {
   chrome.tabs.create({url: url2}, function() {
     chrome.tabs.create({url: url3}, function() {
       chrome.test.notifyPass();
     });
   });
 });
 
 function testWindowOpen() {
   window.open(url1);
   window.open(url2);
   window.open(url3);
 }
 </script>