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

chrome/test/data/extensions/api_test/content_scripts/css_l10n/background.js

 // Copyright (c) 2011 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 firstEnter = true;
 
 chrome.test.getConfig(function(config) {
   chrome.test.log('Creating tab...');
 
-  var URL = 'http://localhost:PORT/files/extensions/test_file_with_body.html';
+  var URL = 'http://localhost:PORT/extensions/test_file_with_body.html';
   var TEST_FILE_URL = URL.replace(/PORT/, config.testServer.port);
 
   chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) {
     if (changeInfo.status != 'complete')
       return;
     if (!firstEnter)
       return;
     firstEnter = false;
 
     // We need to test two different paths, because the message bundles used
@@ skipping 44 matching lines @@
         script_file.file = 'test_paragraph_style.js';
         chrome.tabs.executeScript(tabId,script_file);
       });
     }
 
     ]);
   });
 
   chrome.tabs.create({ url: TEST_FILE_URL });
 });