Remove more dead code from core/ folder

Source/core/page/scrolling/ScrollingCoordinator.cpp

 /*
  * 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 848 matching lines @@
         return;
 
     m_shouldScrollOnMainThreadDirty = true;
 }
 
 bool ScrollingCoordinator::isForMainFrame(ScrollableArea* scrollableArea) const
 {
     return scrollableArea == m_page->mainFrame()->view();
 }
 
-GraphicsLayer* ScrollingCoordinator::scrollLayerForFrameView(FrameView* frameView)
-{
-    RenderView* renderView = frameView->frame().contentRenderer();
-    if (!renderView)
-        return 0;
-    return renderView->compositor()->scrollLayer();
-}
-
-GraphicsLayer* ScrollingCoordinator::counterScrollingLayerForFrameView(FrameView*)
-{
-    return 0;
-}
-
 void ScrollingCoordinator::frameViewRootLayerDidChange(FrameView* frameView)
 {
     ASSERT(isMainThread());
     ASSERT(m_page);
 
     if (!coordinatesScrollingForFrameView(frameView))
         return;
 
     notifyLayoutUpdated();
     updateHaveWheelEventHandlers();
@@ skipping 86 matching lines @@
     bool frameIsScrollable = frameView && frameView->isScrollable();
     if (frameIsScrollable != m_wasFrameScrollable)
         return true;
 
     if (WebLayer* scrollLayer = frameView ? toWebLayer(frameView->layerForScrolling()) : 0)
         return blink::WebSize(frameView->contentsSize()) != scrollLayer->bounds();
     return false;
 }
 
 } // namespace WebCore