Revert 138209

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 11 matching lines @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollingCoordinator_h
 #define ScrollingCoordinator_h
 
 #include "IntRect.h"
 #include "LayoutRect.h"
 #include "PlatformWheelEvent.h"
+#include "RenderObject.h"
 #include "ScrollTypes.h"
 #include "Timer.h"
 #include <wtf/Forward.h>
 
 #if ENABLE(THREADED_SCROLLING)
 #include <wtf/HashMap.h>
 #include <wtf/ThreadSafeRefCounted.h>
 #include <wtf/Threading.h>
 #endif
 
 #if PLATFORM(MAC)
 #include <wtf/RetainPtr.h>
 #endif
 
 namespace WebCore {
 
 typedef unsigned MainThreadScrollingReasons;
 typedef uint64_t ScrollingNodeID;
 
 enum ScrollingNodeType { ScrollingNode, FixedNode };
 
+class Document;
 class Frame;
 class FrameView;
 class GraphicsLayer;
 class Page;
 class Region;
 class ScrollableArea;
 class ViewportConstraints;
 
 #if ENABLE(THREADED_SCROLLING)
 class ScrollingTree;
@@ skipping 79 matching lines @@
     MainThreadScrollingReasons mainThreadScrollingReasons() const;
     bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThreadScrollingReasons() != 0; }
 
     // These virtual functions are currently unique to Chromium's WebLayer approach. Their meaningful
     // implementations are in ScrollingCoordinatorChromium.
     virtual void frameViewHorizontalScrollbarLayerDidChange(FrameView*, GraphicsLayer*) { }
     virtual void frameViewVerticalScrollbarLayerDidChange(FrameView*, GraphicsLayer*) { }
     virtual void scrollableAreaScrollLayerDidChange(ScrollableArea*, GraphicsLayer*) { }
     virtual void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool) { }
     virtual void setLayerIsFixedToContainerLayer(GraphicsLayer*, bool) { }
+    virtual void touchEventTargetRectsDidChange(const Document*) { }
+
+#if ENABLE(TOUCH_EVENT_TRACKING)
+    void computeAbsoluteTouchEventTargetRects(const Document*, Vector<IntRect>&);
+#endif
 
     static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons);
     String mainThreadScrollingReasonsAsText() const;
 
 protected:
     explicit ScrollingCoordinator(Page*);
 
     Region computeNonFastScrollableRegion(Frame*, const IntPoint& frameLocation);
     unsigned computeCurrentWheelEventHandlerCount();
     GraphicsLayer* scrollLayerForFrameView(FrameView*);
@@ skipping 13 matching lines @@
     IntPoint m_scheduledUpdateScrollPosition;
     bool m_scheduledUpdateIsProgrammaticScroll;
     SetOrSyncScrollingLayerPosition m_scheduledScrollingLayerPositionAction;
 
     bool m_forceMainThreadScrollLayerPositionUpdates;
 };
 
 } // namespace WebCore
 
 #endif // ScrollingCoordinator_h