replace OVERRIDE and FINAL with override and final in athena/

athena/system/background_controller.cc

 // 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/system/background_controller.h"
 
 #include "athena/system/public/system_ui.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/canvas.h"
@@ skipping 11 matching lines @@
     AddChildView(system_info_view_);
   }
   virtual ~BackgroundView() {}
 
   void SetImage(const gfx::ImageSkia& image) {
     image_ = image;
     SchedulePaint();
   }
 
   // views::View:
-  virtual void Layout() OVERRIDE {
+  virtual void Layout() override {
     system_info_view_->SetBounds(
         0, 0, width(), system_info_view_->GetPreferredSize().height());
   }
 
-  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
+  virtual void OnPaint(gfx::Canvas* canvas) override {
     canvas->DrawImageInt(image_,
                          0,
                          0,
                          image_.width(),
                          image_.height(),
                          0,
                          0,
                          width(),
                          height(),
                          true);
@@ skipping 23 matching lines @@
   // background_widget is owned by the container and will be deleted
   // when the container is deleted.
 }
 
 void BackgroundController::SetImage(const gfx::ImageSkia& image) {
   // TODO(oshima): implement cross fede animation.
   background_view_->SetImage(image);
 }
 
 }  // namespace athena