Move another set of extension tests to manifest_version 2

chrome/test/data/extensions/api_test/tabs/incognito_disabled/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.
+
+chrome.test.runTests([
+  function createIncognitoWindow() {
+    chrome.windows.create({ url: "about:blank", incognito: true },
+                          function(window) {
+      chrome.test.assertEq(window, undefined);
+      chrome.test.notifyPass();
+    });
+  }
+]);