Remove "2" suffixes from options2 code.

chrome/browser/ui/webui/options2/options_ui2_browsertest.h

-// Copyright (c) 2012 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.
-
-#ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS2_OPTIONS_UI2_BROWSERTEST_H_
-#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_OPTIONS_UI2_BROWSERTEST_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "chrome/test/base/in_process_browser_test.h"
-
-namespace options2 {
-
-class OptionsBrowserTest : public InProcessBrowserTest {
- public:
-  OptionsBrowserTest();
-
-  // Navigate to the settings tab and block until complete.
-  void NavigateToSettings();
-
-  // Check navbar's existence.
-  void VerifyNavbar();
-
-  // Verify that the page title is correct.
-  // The only guarantee we can make about the title of a settings tab is that
-  // it should contain IDS_SETTINGS_TITLE somewhere.
-  void VerifyTitle();
-};
-
-}  // namespace options2
-
-#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_OPTIONS_UI2_BROWSERTEST_H_