replace OVERRIDE and FINAL with override and final in athena/

athena/screen/screen_accelerator_handler.h

 // Copyright 2014 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.
 
 #include "athena/input/public/accelerator_manager.h"
 
 #include "base/macros.h"
 
 namespace aura {
 class Window;
 }
 
 namespace athena {
 
 // Handles screen related accelerators.
 class ScreenAcceleratorHandler : public AcceleratorHandler {
  public:
   explicit ScreenAcceleratorHandler(aura::Window* root_window);
 
  private:
   virtual ~ScreenAcceleratorHandler();
 
   // AcceleratorHandler:
-  virtual bool IsCommandEnabled(int command_id) const OVERRIDE;
+  virtual bool IsCommandEnabled(int command_id) const override;
   virtual bool OnAcceleratorFired(int command_id,
-                                  const ui::Accelerator& accelerator) OVERRIDE;
+                                  const ui::Accelerator& accelerator) override;
 
   aura::Window* root_window_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenAcceleratorHandler);
 };
 
 }  // namespace athena