replace OVERRIDE and FINAL with override and final in ash/

ash/system/tray/throbber_view.h

 // Copyright (c) 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_THROBBER_VIEW_H_
 #define ASH_SYSTEM_TRAY_THROBBER_VIEW_H_
 
 #include "ui/gfx/size.h"
 #include "ui/views/controls/throbber.h"
 #include "ui/views/view.h"
 
 namespace ash {
 
 // A SmoothedThrobber with tooltip.
 class SystemTrayThrobber : public views::SmoothedThrobber {
  public:
   SystemTrayThrobber(int frame_delay_ms);
   virtual ~SystemTrayThrobber();
 
   void SetTooltipText(const base::string16& tooltip_text);
 
   // Overriden from views::View.
   virtual bool GetTooltipText(
-        const gfx::Point& p, base::string16* tooltip) const OVERRIDE;
+        const gfx::Point& p, base::string16* tooltip) const override;
 
  private:
   // The current tooltip text.
   base::string16 tooltip_text_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayThrobber);
 };
 
 // A View containing a SystemTrayThrobber with animation for starting/stopping.
 class ThrobberView : public views::View {
  public:
   ThrobberView();
   virtual ~ThrobberView();
 
   void Start();
   void Stop();
   void SetTooltipText(const base::string16& tooltip_text);
 
   // Overriden from views::View.
-  virtual gfx::Size GetPreferredSize() const OVERRIDE;
-  virtual void Layout() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const override;
+  virtual void Layout() override;
   virtual bool GetTooltipText(
-      const gfx::Point& p, base::string16* tooltip) const OVERRIDE;
+      const gfx::Point& p, base::string16* tooltip) const override;
 
  private:
   // Schedules animation for starting/stopping throbber.
   void ScheduleAnimation(bool start_throbber);
 
   SystemTrayThrobber* throbber_;
 
   // The current tooltip text.
   base::string16 tooltip_text_;
 
   DISALLOW_COPY_AND_ASSIGN(ThrobberView);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_THROBBER_VIEW_H_