Remove the CSS_COMPOSITING define, the CSS blending and compositing

WebCore/rendering/RenderLayerBacking.cpp

Index: WebCore/rendering/RenderLayerBacking.cpp
===================================================================
--- WebCore/rendering/RenderLayerBacking.cpp	(revision 148420)
+++ WebCore/rendering/RenderLayerBacking.cpp	(working copy)
@@ -207,9 +207,7 @@
 #if ENABLE(CSS_FILTERS)
     updateFilters(renderer()->style());
 #endif
-#if ENABLE(CSS_COMPOSITING)
     updateLayerBlendMode(renderer()->style());
-#endif
 }
 
 void RenderLayerBacking::destroyGraphicsLayers()
@@ -272,11 +270,9 @@
 }
 #endif
 
-#if ENABLE(CSS_COMPOSITING)
 void RenderLayerBacking::updateLayerBlendMode(const RenderStyle*)
 {
 }
-#endif
 
 static bool hasNonZeroTransformOrigin(const RenderObject* renderer)
 {
@@ -491,9 +487,7 @@
     if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyOpacity))
         updateOpacity(renderer()->style());
 
-#if ENABLE(CSS_COMPOSITING)
     updateLayerBlendMode(renderer()->style());
-#endif
 
     bool isSimpleContainer = isSimpleContainerCompositingLayer();
     
@@ -1553,11 +1547,9 @@
     compositor()->repaintInCompositedAncestor(m_owningLayer, compositedBounds());
 }
 
-#if ENABLE(CSS_COMPOSITING)
 void RenderLayerBacking::setBlendMode(BlendMode)
 {
 }
-#endif
 
 void RenderLayerBacking::setContentsNeedDisplay()
 {