Clean up ancestorScrollingLayer

Source/core/rendering/RenderLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 210 matching lines @@
 
     RenderLayer* enclosingOverflowClipLayer(IncludeSelfOrNot = IncludeSelf) const;
 
     bool isRepaintContainer() const;
     // Enclosing compositing layer; if includeSelf is true, may return this.
     RenderLayer* enclosingCompositingLayer(IncludeSelfOrNot = IncludeSelf) const;
     RenderLayer* enclosingCompositingLayerForRepaint(IncludeSelfOrNot = IncludeSelf) const;
     // Ancestor compositing layer, excluding this.
     RenderLayer* ancestorCompositingLayer() const { return enclosingCompositingLayer(ExcludeSelf); }
 
-    // Ancestor composited scrolling layer at or above our containing block.
-    RenderLayer* ancestorCompositedScrollingLayer() const;
-
     // Ancestor scrolling layer at or above our containing block.
     RenderLayer* ancestorScrollingLayer() const;
 
     RenderLayer* enclosingFilterLayer(IncludeSelfOrNot = IncludeSelf) const;
     bool hasAncestorWithFilterOutsets() const;
 
     bool canUseConvertToLayerCoords() const
     {
         // These RenderObjects have an impact on their layers without the renderers knowing about it.
         return !renderer()->hasColumns() && !renderer()->hasTransform() && !renderer()->isSVGRoot();
@@ skipping 480 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const WebCore::RenderLayer*);
 void showLayerTree(const WebCore::RenderObject*);
 #endif
 
 #endif // RenderLayer_h