Remove usesCompositedScrolling

sky/engine/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. 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>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 2134 matching lines @@
     for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
         child->invalidatePaintForBlockSelectionGaps();
 
     if (m_blockSelectionGapsBounds.isEmpty())
         return;
 
     LayoutRect rect = m_blockSelectionGapsBounds;
     if (renderer()->hasOverflowClip()) {
         RenderBox* box = renderBox();
         rect.move(-box->scrolledContentOffset());
-        if (!scrollableArea()->usesCompositedScrolling())
-            rect.intersect(box->overflowClipRect(LayoutPoint()));
+        rect.intersect(box->overflowClipRect(LayoutPoint()));
     }
     if (renderer()->hasClip())
         rect.intersect(toRenderBox(renderer())->clipRect(LayoutPoint()));
     if (!rect.isEmpty())
         renderer()->invalidatePaintRectangle(rect);
 }
 
 IntRect RenderLayer::blockSelectionGapsBounds() const
 {
     if (!renderer()->isRenderBlock())
@@ skipping 610 matching lines @@
     }
 }
 
 void showLayerTree(const blink::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif