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

chrome/test/data/extensions/api_test/tabs/on_replaced/test_onreplaced.js

 // Copyright (c) 2012 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.
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     chrome.tabs.create({"url": "about:blank"}, function(tab) {
       chrome.test.runTests([
           function onReplacedEvent() {
             var tabId = tab.id;
 
             var onReplaceListener = function(new_tab_id, old_tab_id) {
               chrome.test.assertTrue(tabId != new_tab_id);
               chrome.test.assertEq(tabId, old_tab_id);
               chrome.tabs.onReplaced.removeListener(onReplaceListener);
               chrome.test.succeed();
             };
             chrome.tabs.onReplaced.addListener(onReplaceListener);
 
             var URL_TARGET =
-                "http://127.0.0.1:PORT/files/prerender/prerender_page.html"
+                "http://127.0.0.1:PORT/prerender/prerender_page.html"
                     .replace(/PORT/g, config.testServer.port);
             chrome.tabs.update({
               url: URL_TARGET
             });
 
             chrome.test.notifyPass();
           }
       ]);
     });
   });
 };