Standardize usage of virtual/override/final specifiers.

ash/wm/gestures/long_press_affordance_handler.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 ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_
 #define ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_
 
 #include "base/timer/timer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/animation/linear_animation.h"
@@ skipping 13 matching lines @@
 // on a TAP_DOWN gesture. The animation sequence consists of two parts:
 // The first part is a grow animation that starts at semi-long-press and
 // completes on a long-press gesture. The affordance animates to full size
 // during grow animation.
 // The second part is a shrink animation that start after grow and shrinks the
 // affordance out of view.
 class LongPressAffordanceHandler : public gfx::LinearAnimation,
                                    public aura::WindowObserver {
  public:
   LongPressAffordanceHandler();
-  virtual ~LongPressAffordanceHandler();
+  ~LongPressAffordanceHandler() override;
 
   // Displays or removes long press affordance according to the |event|.
   void ProcessEvent(aura::Window* target, ui::GestureEvent* event);
 
  private:
   friend class ash::test::SystemGestureEventFilterTest;
 
   class LongPressAffordanceView;
 
   enum LongPressAnimationType {
     NONE,
     GROW_ANIMATION,
     SHRINK_ANIMATION,
   };
 
   void StartAnimation();
   void StopAffordance();
   void SetTapDownTarget(aura::Window* target);
 
   // Overridden from gfx::LinearAnimation.
-  virtual void AnimateToState(double state) override;
-  virtual void AnimationStopped() override;
+  void AnimateToState(double state) override;
+  void AnimationStopped() override;
 
   // Overridden from aura::WindowObserver.
-  virtual void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowDestroying(aura::Window* window) override;
 
   scoped_ptr<LongPressAffordanceView> view_;
   gfx::Point tap_down_location_;
   base::OneShotTimer<LongPressAffordanceHandler> timer_;
   aura::Window* tap_down_target_;
   LongPressAnimationType current_animation_type_;
 
   DISALLOW_COPY_AND_ASSIGN(LongPressAffordanceHandler);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_