Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/message_bubble.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_CHROMEOS_LOGIN_MESSAGE_BUBBLE_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MESSAGE_BUBBLE_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 69 matching lines @@
 #if !defined(TOUCH_UI) && defined(TOOLKIT_USES_GTK)
   virtual gboolean OnButtonPress(GtkWidget* widget,
                                  GdkEventButton* event) OVERRIDE;
 #endif
 
  protected:
   virtual ~MessageBubble();
 
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
-                             const views::Event& event);
+                             const views::Event& event) OVERRIDE;
 
   // Overridden from views::LinkListener:
   virtual void LinkClicked(views::Link* source, int event_flags) OVERRIDE;
 
 #if !defined(TOUCH_UI) && defined(TOOLKIT_USES_GTK)
   // Overridden from NativeWidgetGtk.
   virtual void OnActiveChanged() OVERRIDE;
   virtual void SetMouseCapture() OVERRIDE;
 #endif
 
@@ skipping 13 matching lines @@
   std::vector<views::Link*> help_links_;
   MessageBubbleDelegate* message_delegate_;
   bool grab_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageBubble);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MESSAGE_BUBBLE_H_