Convert another batch of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/window_open/panel/test.js

Index: chrome/test/data/extensions/api_test/window_open/panel/test.js
===================================================================
--- chrome/test/data/extensions/api_test/window_open/panel/test.js	(revision 0)
+++ chrome/test/data/extensions/api_test/window_open/panel/test.js	(revision 0)
@@ -0,0 +1,13 @@
+// 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.
+
+chrome.test.runTests([
+  function openPanel() {
+    chrome.windows.create(
+        { 'url': 'about:blank', 'type': 'panel' },
+        chrome.test.callbackPass(function(win) {
+            chrome.test.assertEq('panel', win.type);
+        }));
+  }
+]);