Convert another batch of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/window_open/close_panels_on_uninstall/background.html

Index: chrome/test/data/extensions/api_test/window_open/close_panels_on_uninstall/background.html
===================================================================
--- chrome/test/data/extensions/api_test/window_open/close_panels_on_uninstall/background.html	(revision 112565)
+++ chrome/test/data/extensions/api_test/window_open/close_panels_on_uninstall/background.html	(working copy)
@@ -1,14 +1,6 @@
-<script>
-
-// Open a panel, popup and tab to non-extension content.
-chrome.windows.create({url: "about:blank", type: "panel"});
-window.open("about:blank",
-    "content_popup_non_extension", "height=200,width=200");
-window.open("about:blank", "", "");
-
-// Open a panel, popup and tab to extension content.
-chrome.windows.create({url: "content_panel.html", type: "panel"});
-chrome.windows.create({url: "content_popup.html", type: "popup"});
-chrome.tabs.create({url: "content_tab.html"});
-
-</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="background.js"></script>