Remove the CSS_COMPOSITING define, the CSS blending and compositing

WebCore/rendering/RenderLayer.h

Index: WebCore/rendering/RenderLayer.h
===================================================================
--- WebCore/rendering/RenderLayer.h	(revision 148420)
+++ WebCore/rendering/RenderLayer.h	(working copy)
@@ -471,9 +471,7 @@
 
     void updateTransform();
     
-#if ENABLE(CSS_COMPOSITING)
     void updateBlendMode();
-#endif
 
     const LayoutSize& paintOffset() const { return m_paintOffset; }
 
@@ -734,11 +732,7 @@
     bool hasFilter() const { return false; }
 #endif
 
-#if ENABLE(CSS_COMPOSITING)
     bool hasBlendMode() const { return renderer()->hasBlendMode(); }
-#else
-    bool hasBlendMode() const { return false; }
-#endif
 
     // Overloaded new operator. Derived classes must override operator new
     // in order to allocate out of the RenderArena.
@@ -1187,9 +1181,7 @@
     bool m_hasFilterInfo : 1;
 #endif
 
-#if ENABLE(CSS_COMPOSITING)
     BlendMode m_blendMode;
-#endif
 
     RenderLayerModelObject* m_renderer;