Remove "2" suffixes from options2 code.

chrome/browser/ui/webui/options2/chromeos/language_chewing_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_LANGUAGE_CHEWING_HANDLER2_H_
-#define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_LANGUAGE_CHEWING_HANDLER2_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "chrome/browser/ui/webui/options2/options_ui2.h"
-
-namespace base {
-class DictionaryValue;
-}
-
-namespace chromeos {
-namespace options2 {
-
-// Chewing options page UI handler.
-class LanguageChewingHandler : public ::options2::OptionsPageUIHandler {
- public:
-  LanguageChewingHandler();
-  virtual ~LanguageChewingHandler();
-
-  // OptionsPageUIHandler implementation.
-  virtual void GetLocalizedValues(
-      base::DictionaryValue* localized_strings) OVERRIDE;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(LanguageChewingHandler);
-};
-
-}  // namespace options2
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CHROMEOS_LANGUAGE_CHEWING_HANDLER2_H_