Mac: Delete now-dead elastic overscroll code

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 12 matching lines @@
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollAnimatorMac_h
 #define ScrollAnimatorMac_h
 
 #include "platform/Timer.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/geometry/FloatSize.h"
 #include "platform/geometry/IntRect.h"
-#include "platform/mac/ScrollElasticityController.h"
 #include "platform/scroll/ScrollAnimator.h"
 #include "wtf/RetainPtr.h"
 
 OBJC_CLASS WebScrollAnimationHelperDelegate;
 OBJC_CLASS WebScrollbarPainterControllerDelegate;
 OBJC_CLASS WebScrollbarPainterDelegate;
 
 typedef id ScrollbarPainterController;
 
-#if !USE(RUBBER_BANDING)
-class ScrollElasticityControllerClient { };
-#endif
-
 namespace blink {
 
 class Scrollbar;
 
-class PLATFORM_EXPORT ScrollAnimatorMac : public ScrollAnimator, private ScrollElasticityControllerClient {
+class PLATFORM_EXPORT ScrollAnimatorMac : public ScrollAnimator {
 
 public:
     ScrollAnimatorMac(ScrollableArea*);
     virtual ~ScrollAnimatorMac();
 
     void immediateScrollToPointForScrollAnimation(const FloatPoint& newPosition);
     bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
 
     void updateScrollerStyle();
 
@@ skipping 19 matching lines @@
     void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
     Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
 
     void sendContentAreaScrolledTimerFired(Timer<ScrollAnimatorMac>*);
     Timer<ScrollAnimatorMac> m_sendContentAreaScrolledTimer;
     FloatSize m_contentAreaScrolledTimerScrollDelta;
 
     virtual ScrollResultOneDimensional scroll(ScrollbarOrientation, ScrollGranularity, float step, float delta) override;
     virtual void scrollToOffsetWithoutAnimation(const FloatPoint&) override;
 
-#if USE(RUBBER_BANDING)
-    virtual ScrollResult handleWheelEvent(const PlatformWheelEvent&) override;
-#endif
-
     virtual void handleWheelEventPhase(PlatformWheelEventPhase) override;
 
     virtual void cancelAnimations() override;
     virtual 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;
@@ skipping 15 matching lines @@
     virtual void willRemoveHorizontalScrollbar(Scrollbar*) override;
 
     virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*) override;
 
     virtual void notifyContentAreaScrolled(const FloatSize& delta) override;
 
     FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
 
     void immediateScrollTo(const FloatPoint&);
 
-    virtual bool isRubberBandInProgress() const override;
-
-#if USE(RUBBER_BANDING)
-    /// ScrollElasticityControllerClient member functions.
-    virtual IntSize stretchAmount() override;
-    virtual bool allowsHorizontalStretching() override;
-    virtual bool allowsVerticalStretching() override;
-    virtual bool pinnedInDirection(const FloatSize&) override;
-    virtual bool canScrollHorizontally() override;
-    virtual bool canScrollVertically() override;
-    virtual IntPoint absoluteScrollPosition() override;
-    virtual void immediateScrollByWithoutContentEdgeConstraints(const FloatSize&) override;
-    virtual void immediateScrollBy(const FloatSize&) override;
-    virtual void startSnapRubberbandTimer() override;
-    virtual void stopSnapRubberbandTimer() override;
-    virtual void adjustScrollPositionToBoundsIfNecessary() override;
-
-    bool pinnedInDirection(float deltaX, float deltaY);
-    void snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*);
-
-    ScrollElasticityController m_scrollElasticityController;
-    Timer<ScrollAnimatorMac> m_snapRubberBandTimer;
-#endif
-
     bool m_haveScrolledSincePageLoad;
     bool m_needsScrollerStyleUpdate;
     IntRect m_visibleScrollerThumbRect;
 };
 
 } // namespace blink
 
 #endif // ScrollAnimatorMac_h