Revert 140571

Source/WebCore/page/scrolling/ScrollingTree.h

 /*
  * Copyright (C) 2012 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 61 matching lines @@
     // event must be sent again to the WebCore event handler.
     EventResult tryToHandleWheelEvent(const PlatformWheelEvent&);
     bool hasWheelEventHandlers() const { return m_hasWheelEventHandlers; }
 
     // Can be called from any thread. Will update the back forward state of the page, used for rubber-banding.
     void updateBackForwardState(bool canGoBack, bool canGoForward);
 
     // Must be called from the scrolling thread. Handles the wheel event.
     void handleWheelEvent(const PlatformWheelEvent&);
 
-    void setMainFrameIsRubberBanding(bool);
-    bool isRubberBandInProgress();
-
     void invalidate();
     void commitNewTreeState(PassOwnPtr<ScrollingStateTree>);
 
     void setMainFramePinState(bool pinnedToTheLeft, bool pinnedToTheRight);
 
     void updateMainFrameScrollPosition(const IntPoint& scrollPosition, SetOrSyncScrollingLayerPosition = SyncScrollingLayerPosition);
     IntPoint mainFrameScrollPosition();
 
 #if PLATFORM(MAC) || (PLATFORM(CHROMIUM) && OS(DARWIN))
     void handleWheelEventPhase(PlatformWheelEventPhase);
 #endif
 
     bool canGoBack();
     bool canGoForward();
 
     bool willWheelEventStartSwipeGesture(const PlatformWheelEvent&);
 
     void setScrollingPerformanceLoggingEnabled(bool flag);
     bool scrollingPerformanceLoggingEnabled();
 
-    ScrollingTreeScrollingNode* rootNode() const { return m_rootNode.get(); }
-
 private:
     explicit ScrollingTree(ScrollingCoordinator*);
 
     void removeDestroyedNodes(ScrollingStateTree*);
     void updateTreeFromStateNode(ScrollingStateNode*);
 
     RefPtr<ScrollingCoordinator> m_scrollingCoordinator;
     OwnPtr<ScrollingTreeScrollingNode> m_rootNode;
 
     typedef HashMap<ScrollingNodeID, ScrollingTreeNode*> ScrollingTreeNodeMap;
     ScrollingTreeNodeMap m_nodeMap;
 
     Mutex m_mutex;
     Region m_nonFastScrollableRegion;
     IntPoint m_mainFrameScrollPosition;
     bool m_hasWheelEventHandlers;
 
     Mutex m_swipeStateMutex;
     bool m_canGoBack;
     bool m_canGoForward;
     bool m_mainFramePinnedToTheLeft;
     bool m_mainFramePinnedToTheRight;
-    bool m_mainFrameIsRubberBanding;
 
     bool m_scrollingPerformanceLoggingEnabled;
     
     bool m_isHandlingProgrammaticScroll;
 
 #if PLATFORM(MAC)
     RetainPtr<CALayer> m_debugInfoLayer;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(THREADED_SCROLLING)
 
 #endif // ScrollingTree_h