Add manifest_version 2 to yet more extension tests.

chrome/test/data/extensions/uitest/window_open/newtab.js

Index: chrome/test/data/extensions/uitest/window_open/newtab.js
===================================================================
--- chrome/test/data/extensions/uitest/window_open/newtab.js	(revision 0)
+++ chrome/test/data/extensions/uitest/window_open/newtab.js	(revision 0)
@@ -0,0 +1,14 @@
+// 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.
+
+function testExtensionApi() {
+  try {
+    chrome.tabs.getAllInWindow(null, function() {
+      window.domAutomationController.send(
+          !chrome.extension.lastError);
+    });
+  } catch (e) {
+    window.domAutomationController.send(false);
+  }
+}