replace OVERRIDE and FINAL with override and final in ash/

ash/system/tray/tray_popup_header_button.h

 // Copyright 2013 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 ASH_SYSTEM_TRAY_TRAY_POPUP_HEADER_BUTTON_H_
 #define ASH_SYSTEM_TRAY_TRAY_POPUP_HEADER_BUTTON_H_
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 10 matching lines @@
   TrayPopupHeaderButton(views::ButtonListener* listener,
                         int enabled_resource_id,
                         int disabled_resource_id,
                         int enabled_resource_id_hover,
                         int disabled_resource_id_hover,
                         int accessible_name_id);
   virtual ~TrayPopupHeaderButton();
 
  private:
   // Overridden from views::View:
-  virtual const char* GetClassName() const OVERRIDE;
-  virtual gfx::Size GetPreferredSize() const OVERRIDE;
-  virtual void OnPaintBorder(gfx::Canvas* canvas) OVERRIDE;
+  virtual const char* GetClassName() const override;
+  virtual gfx::Size GetPreferredSize() const override;
+  virtual void OnPaintBorder(gfx::Canvas* canvas) override;
 
   // Overridden from views::CustomButton:
-  virtual void StateChanged() OVERRIDE;
+  virtual void StateChanged() override;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPopupHeaderButton);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_POPUP_HEADER_BUTTON_H_