Change rendering code to use RenderObject::resolveColor

Source/core/rendering/RenderLayerBacking.cpp

 /*
  * Copyright (C) 2009, 2010, 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 1074 matching lines @@
 {
     return hasBoxDecorations(style) || style->hasBackgroundImage();
 }
 
 Color RenderLayerBacking::rendererBackgroundColor() const
 {
     RenderObject* backgroundRenderer = renderer();
     if (backgroundRenderer->isRoot())
         backgroundRenderer = backgroundRenderer->rendererForRootBackground();
 
-    return backgroundRenderer->style()->visitedDependentColor(CSSPropertyBackgroundColor);
+    return backgroundRenderer->resolveColor(CSSPropertyBackgroundColor);
 }
 
 void RenderLayerBacking::updateBackgroundColor(bool isSimpleContainer)
 {
     Color backgroundColor = rendererBackgroundColor();
     if (isSimpleContainer) {
         m_graphicsLayer->setContentsToSolidColor(backgroundColor);
         m_graphicsLayer->setBackgroundColor(Color());
     } else {
         // An unset (invalid) color will remove the solid color.
@@ skipping 760 matching lines @@
     if (m_layerForVerticalScrollbar)
         backingMemory += m_layerForVerticalScrollbar->backingStoreMemoryEstimate();
 
     if (m_layerForScrollCorner)
         backingMemory += m_layerForScrollCorner->backingStoreMemoryEstimate();
     
     return backingMemory;
 }
 
 } // namespace WebCore