Chromium roll (https://codereview.chromium.org/976353002)

ui/gfx/animation/animation.h

 // Copyright (c) 2011 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_GFX_ANIMATION_ANIMATION_H_
 #define UI_GFX_ANIMATION_ANIMATION_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
@@ skipping 64 matching lines @@
   // true the delegate is notified the animation was canceled, otherwise the
   // delegate is notified the animation stopped.
   virtual bool ShouldSendCanceledFromStop();
 
   AnimationContainer* container() { return container_.get(); }
   base::TimeTicks start_time() const { return start_time_; }
   AnimationDelegate* delegate() { return delegate_; }
 
   // AnimationContainer::Element overrides
   void SetStartTime(base::TimeTicks start_time) override;
-  virtual void Step(base::TimeTicks time_now) = 0;
+  void Step(base::TimeTicks time_now) override = 0;
   base::TimeDelta GetTimerInterval() const override;
 
  private:
   // Interval for the animation.
   const base::TimeDelta timer_interval_;
 
   // If true we're running.
   bool is_animating_;
 
   // Our delegate; may be null.
   AnimationDelegate* delegate_;
 
   // Container we're in. If non-null we're animating.
   scoped_refptr<AnimationContainer> container_;
 
   // Time we started at.
   base::TimeTicks start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(Animation);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_ANIMATION_ANIMATION_H_