Standardize usage of virtual/override/final specifiers.

ui/app_list/views/pulsing_block_view.h

 // Copyright (c) 2012 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 UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_
 #define UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/timer/timer.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace app_list {
 
 // PulsingBlockView shows a pulsing white block via layer animation.
 class PulsingBlockView : public views::View {
  public:
   // Constructs a PulsingBlockView of |size|. If |start_delay| is true,
   // starts the pulsing animation after a random delay.
   PulsingBlockView(const gfx::Size& size, bool start_delay);
-  virtual ~PulsingBlockView();
+  ~PulsingBlockView() override;
 
  private:
   void OnStartDelayTimer();
 
   // views::View overrides:
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
   base::OneShotTimer<PulsingBlockView> start_delay_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(PulsingBlockView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_PULSING_BLOCK_VIEW_H_