Fix virtual/override/final usage in Source/platform/.

Source/platform/mac/ScrollAnimatorMac.h

 /*
  * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 29 matching lines @@
 typedef id ScrollbarPainterController;
 
 namespace blink {
 
 class Scrollbar;
 
 class PLATFORM_EXPORT ScrollAnimatorMac : public ScrollAnimator {
 
 public:
     ScrollAnimatorMac(ScrollableArea*);
-    virtual ~ScrollAnimatorMac();
+    ~ScrollAnimatorMac() override;
 
     void immediateScrollToPointForScrollAnimation(const FloatPoint& newPosition);
     bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
 
     void updateScrollerStyle();
 
     bool scrollbarPaintTimerIsActive() const;
     void startScrollbarPaintTimer();
     void stopScrollbarPaintTimer();
 
@@ skipping 12 matching lines @@
     RetainPtr<WebScrollbarPainterDelegate> m_horizontalScrollbarPainterDelegate;
     RetainPtr<WebScrollbarPainterDelegate> m_verticalScrollbarPainterDelegate;
 
     void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
     Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
 
     void sendContentAreaScrolledTimerFired(Timer<ScrollAnimatorMac>*);
     Timer<ScrollAnimatorMac> m_sendContentAreaScrolledTimer;
     FloatSize m_contentAreaScrolledTimerScrollDelta;
 
-    virtual ScrollResultOneDimensional userScroll(ScrollbarOrientation, ScrollGranularity, float step, float delta) override;
-    virtual void scrollToOffsetWithoutAnimation(const FloatPoint&) override;
+    ScrollResultOneDimensional userScroll(ScrollbarOrientation, ScrollGranularity, float step, float delta) override;
+    void scrollToOffsetWithoutAnimation(const FloatPoint&) override;
 
-    virtual void handleWheelEventPhase(PlatformWheelEventPhase) override;
+    void handleWheelEventPhase(PlatformWheelEventPhase) override;
 
-    virtual void cancelAnimations() override;
-    virtual void setIsActive() override;
+    void cancelAnimations() override;
+    void setIsActive() override;
 
-    virtual void contentAreaWillPaint() const override;
-    virtual void mouseEnteredContentArea() const override;
-    virtual void mouseExitedContentArea() const override;
-    virtual void mouseMovedInContentArea() const override;
-    virtual void mouseEnteredScrollbar(Scrollbar*) const override;
-    virtual void mouseExitedScrollbar(Scrollbar*) const override;
-    virtual void willStartLiveResize() override;
-    virtual void contentsResized() const override;
-    virtual void willEndLiveResize() override;
-    virtual void contentAreaDidShow() const override;
-    virtual void contentAreaDidHide() const override;
+    void contentAreaWillPaint() const override;
+    void mouseEnteredContentArea() const override;
+    void mouseExitedContentArea() const override;
+    void mouseMovedInContentArea() const override;
+    void mouseEnteredScrollbar(Scrollbar*) const override;
+    void mouseExitedScrollbar(Scrollbar*) const override;
+    void willStartLiveResize() override;
+    void contentsResized() const override;
+    void willEndLiveResize() override;
+    void contentAreaDidShow() const override;
+    void contentAreaDidHide() const override;
     void didBeginScrollGesture() const;
     void didEndScrollGesture() const;
     void mayBeginScrollGesture() const;
 
-    virtual void finishCurrentScrollAnimations() override;
+    void finishCurrentScrollAnimations() override;
 
-    virtual void didAddVerticalScrollbar(Scrollbar*) override;
-    virtual void willRemoveVerticalScrollbar(Scrollbar*) override;
-    virtual void didAddHorizontalScrollbar(Scrollbar*) override;
-    virtual void willRemoveHorizontalScrollbar(Scrollbar*) override;
+    void didAddVerticalScrollbar(Scrollbar*) override;
+    void willRemoveVerticalScrollbar(Scrollbar*) override;
+    void didAddHorizontalScrollbar(Scrollbar*) override;
+    void willRemoveHorizontalScrollbar(Scrollbar*) override;
 
-    virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) override;
+    bool shouldScrollbarParticipateInHitTesting(Scrollbar*) override;
 
-    virtual void notifyContentAreaScrolled(const FloatSize& delta) override;
+    void notifyContentAreaScrolled(const FloatSize& delta) override;
 
     FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
 
     void immediateScrollTo(const FloatPoint&);
 
     bool m_haveScrolledSincePageLoad;
     bool m_needsScrollerStyleUpdate;
     IntRect m_visibleScrollerThumbRect;
 };
 
 } // namespace blink
 
 #endif // ScrollAnimatorMac_h