Remove "2" suffixes from options2 code.

chrome/browser/ui/webui/options2/chromeos/stats_options_handler2.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_CHROMEOS_STATS_OPTIONS_HANDLER2_H_
-#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_STATS_OPTIONS_HANDLER2_H_
-#pragma once
-
-#include "base/compiler_specific.h"
-#include "chrome/browser/ui/webui/options2/options_ui2.h"
-
-namespace chromeos {
-namespace options2 {
-
-// ChromeOS handler for "Stats/crash reporting to Google" option of the Advanced
-// settings page. This handler does only ChromeOS-specific actions while default
-// code is in Chrome's AdvancedOptionsHandler
-// (chrome/browser/webui/advanced_options_handler.cc).
-class StatsOptionsHandler : public ::options2::OptionsPageUIHandler {
- public:
-  StatsOptionsHandler();
-
-  // OptionsPageUIHandler implementation.
-  virtual void GetLocalizedValues(
-      base::DictionaryValue* localized_strings) OVERRIDE;
-
-  // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() OVERRIDE;
-
- private:
-  void HandleMetricsReportingCheckbox(const base::ListValue* args);
-
-  DISALLOW_COPY_AND_ASSIGN(StatsOptionsHandler);
-};
-
-}  // namespace options2
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_STATS_OPTIONS_HANDLER2_H_