Revert 140571

Source/WebCore/page/scrolling/ScrollingCoordinator.h

 /*
  * Copyright (C) 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 108 matching lines @@
     virtual void commitTreeStateIfNeeded() { }
     virtual bool requestScrollPositionUpdate(FrameView*, const IntPoint&) { return false; }
     virtual bool handleWheelEvent(FrameView*, const PlatformWheelEvent&) { return true; }
     virtual ScrollingNodeID attachToStateTree(ScrollingNodeType, ScrollingNodeID newNodeID, ScrollingNodeID /*parentID*/) { return newNodeID; }
     virtual void detachFromStateTree(ScrollingNodeID) { }
     virtual void clearStateTree() { }
     virtual void updateViewportConstrainedNode(ScrollingNodeID, const ViewportConstraints&, GraphicsLayer*) { }
     virtual void updateScrollingNode(ScrollingNodeID, GraphicsLayer* /*scrollLayer*/, GraphicsLayer* /*counterScrollingLayer*/) { }
     virtual void syncChildPositions(const LayoutRect&) { }
     virtual String scrollingStateTreeAsText() const;
-    virtual bool isRubberBandInProgress() const { return false; }
 
     // Generated a unique id for scroll layers.
     ScrollingNodeID uniqueScrollLayerID();
 
     // Dispatched by the scrolling tree whenever the main frame scroll position changes.
     void scheduleUpdateMainFrameScrollPosition(const IntPoint&, bool programmaticScroll, SetOrSyncScrollingLayerPosition);
     void updateMainFrameScrollPosition(const IntPoint&, bool programmaticScroll, SetOrSyncScrollingLayerPosition);
 
     enum MainThreadScrollingReasonFlags {
         ForcedOnMainThread = 1 << 0,
@@ skipping 46 matching lines @@
     IntPoint m_scheduledUpdateScrollPosition;
     bool m_scheduledUpdateIsProgrammaticScroll;
     SetOrSyncScrollingLayerPosition m_scheduledScrollingLayerPositionAction;
 
     bool m_forceMainThreadScrollLayerPositionUpdates;
 };
 
 } // namespace WebCore
 
 #endif // ScrollingCoordinator_h