Remove the CSS_COMPOSITING define, the CSS blending and compositing

WebCore/rendering/RenderLayerBacking.h

 /*
  * 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 159 matching lines @@
     GraphicsLayer* layerForScrollCorner() const { return m_layerForScrollCorner.get(); }
 
 #if ENABLE(CSS_FILTERS)
     void updateFilters(const RenderStyle*);
     bool canCompositeFilters() const { return m_canCompositeFilters; }
 #endif
 
     // Return an estimate of the backing store area (in pixels) allocated by this object's GraphicsLayers.
     double backingStoreMemoryEstimate() const;
 
-#if ENABLE(CSS_COMPOSITING)
     void setBlendMode(BlendMode);
-#endif
     void reportMemoryUsage(MemoryObjectInfo*) const;
 
 private:
     void createPrimaryGraphicsLayer();
     void destroyGraphicsLayers();
     
     PassOwnPtr<GraphicsLayer> createGraphicsLayer(const String&);
 
     RenderLayerModelObject* renderer() const { return m_owningLayer->renderer(); }
     RenderLayerCompositor* compositor() const { return m_owningLayer->compositor(); }
@@ skipping 18 matching lines @@
     GraphicsLayerPaintingPhase paintingPhaseForPrimaryLayer() const;
     
     IntSize contentOffsetInCompostingLayer() const;
     // Result is transform origin in pixels.
     FloatPoint3D computeTransformOrigin(const IntRect& borderBox) const;
     // Result is perspective origin in pixels.
     FloatPoint computePerspectiveOrigin(const IntRect& borderBox) const;
 
     void updateOpacity(const RenderStyle*);
     void updateTransform(const RenderStyle*);
-#if ENABLE(CSS_COMPOSITING)
     void updateLayerBlendMode(const RenderStyle*);
-#endif
     // Return the opacity value that this layer should use for compositing.
     float compositingOpacity(float rendererOpacity) const;
     
     bool isMainFrameRenderViewLayer() const;
     
     bool paintsBoxDecorations() const;
     bool paintsChildren() const;
 
     // Returns true if this compositing layer has no visible content.
     bool isSimpleContainerCompositingLayer() const;
@@ skipping 43 matching lines @@
     bool m_requiresOwnBackingStore;
 #if ENABLE(CSS_FILTERS)
     bool m_canCompositeFilters;
 #endif
     bool m_backgroundLayerPaintsFixedRootBackground;
 };
 
 } // namespace WebCore
 
 #endif // RenderLayerBacking_h