Add OVERRIDE to chrome/browser/ui/gtk/.

chrome/browser/ui/gtk/infobars/translate_message_infobar_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_INFOBARS_TRANSLATE_MESSAGE_INFOBAR_GTK_H_
 #define CHROME_BROWSER_UI_GTK_INFOBARS_TRANSLATE_MESSAGE_INFOBAR_GTK_H_
 #pragma once
 
+#include "base/compiler_specific.h"
 #include "chrome/browser/ui/gtk/infobars/translate_infobar_base_gtk.h"
 
 class TranslateInfoBarDelegate;
 
 class TranslateMessageInfoBar : public TranslateInfoBarBase {
  public:
   TranslateMessageInfoBar(InfoBarTabHelper* owner,
                           TranslateInfoBarDelegate* delegate);
   virtual ~TranslateMessageInfoBar();
 
   // Overridden from TranslateInfoBarBase:
-  virtual void Init();
+  virtual void Init() OVERRIDE;
 
  private:
   CHROMEGTK_CALLBACK_0(TranslateMessageInfoBar, void, OnButtonPressed);
 
   DISALLOW_COPY_AND_ASSIGN(TranslateMessageInfoBar);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_INFOBARS_TRANSLATE_MESSAGE_INFOBAR_GTK_H_