Move another block of extension tests to manifest_version 2.

chrome/test/data/extensions/api_test/executescript/file_after_close/test.html

-<script>
-var server = 'http://b.com:PORT';
-var relativePath = '/files/extensions/api_test/executescript/file_after_close/';
-var extensionPage = chrome.extension.getURL('extension_page.html');
-var webPage1 = server + relativePath + 'web_page1.html';
-var webPage2 = server + relativePath + 'web_page2.html';
-var extensionPageOpened = false;
-
-var listener = function(tabId, changeInfo, tab) {
-  if (changeInfo.status != 'complete')
-    return;
-
-  // web_page1 loaded, open extension page to inject script
-  if (!extensionPageOpened && tab.url == webPage1) {
-    chrome.tabs.create({ url: extensionPage });
-    extensionPageOpened = true;
-    return;
-  }
-
-  if (tab.url == webPage2) {
-    console.log('webPage1 navigated to webPage1. Yeah!');
-    chrome.tabs.onUpdated.removeListener(listener);
-    chrome.test.notifyPass();
-  }
-};
-
-chrome.tabs.onUpdated.addListener(listener);
-chrome.test.getConfig(function(config) {
-  webPage1 = webPage1.replace(/PORT/, config.testServer.port);
-  webPage2 = webPage2.replace(/PORT/, config.testServer.port);
-  chrome.tabs.create({ url: webPage1 });
-});
-
-</script>
+<!--
+ * 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.
+-->
+<script src="test.js"></script>