Standardize usage of virtual/override/final specifiers.

ash/wm/session_state_animator_impl.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_SESSION_STATE_ANIMATOR_IMPL_H_
 #define ASH_WM_SESSION_STATE_ANIMATOR_IMPL_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/session_state_animator.h"
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
     // the analysis is fairly ad-hoc).
     bool RootWindowIsAnimated(SessionStateAnimator::AnimationType type) const;
 
    private:
     SessionStateAnimatorImpl* animator_;  // not owned
 
     DISALLOW_COPY_AND_ASSIGN(TestApi);
   };
 
   SessionStateAnimatorImpl();
-  virtual ~SessionStateAnimatorImpl();
+  ~SessionStateAnimatorImpl() override;
 
   // Fills |containers| with the containers included in |container_mask|.
   static void GetContainers(int container_mask,
                             aura::Window::Windows* containers);
 
   // ash::SessionStateAnimator:
-  virtual void StartAnimation(int container_mask,
-                              AnimationType type,
-                              AnimationSpeed speed) override;
-  virtual void StartAnimationWithCallback(
-      int container_mask,
-      AnimationType type,
-      AnimationSpeed speed,
-      base::Closure callback) override;
-  virtual AnimationSequence* BeginAnimationSequence(
-      base::Closure callback) override;
-  virtual bool IsBackgroundHidden() const override;
-  virtual void ShowBackground() override;
-  virtual void HideBackground() override;
+  void StartAnimation(int container_mask,
+                      AnimationType type,
+                      AnimationSpeed speed) override;
+  void StartAnimationWithCallback(int container_mask,
+                                  AnimationType type,
+                                  AnimationSpeed speed,
+                                  base::Closure callback) override;
+  AnimationSequence* BeginAnimationSequence(base::Closure callback) override;
+  bool IsBackgroundHidden() const override;
+  void ShowBackground() override;
+  void HideBackground() override;
 
  private:
   class AnimationSequence;
   friend class AnimationSequence;
 
   virtual void StartAnimationInSequence(int container_mask,
       AnimationType type,
       AnimationSpeed speed,
       AnimationSequence* observer);
 
   // Apply animation |type| to window |window| with |speed| and add |observer|
   // if it is not NULL to the last animation sequence.
   void RunAnimationForWindow(aura::Window* window,
                              SessionStateAnimator::AnimationType type,
                              SessionStateAnimator::AnimationSpeed speed,
                              ui::LayerAnimationObserver* observer);
 
   DISALLOW_COPY_AND_ASSIGN(SessionStateAnimatorImpl);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_SESSION_STATE_ANIMATOR_IMPL_H_