Remove CSS_SHADERS compile-time flag.

Source/WebCore/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 42 matching lines @@
 #include "ScrollingCoordinator.h"
 #include "Settings.h"
 #include "StyleResolver.h"
 #include "TiledBacking.h"
 #include "WebCoreMemoryInstrumentation.h"
 #include <wtf/CurrentTime.h>
 #include <wtf/text/StringBuilder.h>
 
 #if ENABLE(CSS_FILTERS)
 #include "FilterEffectRenderer.h"
-#if ENABLE(CSS_SHADERS)
 #include "CustomFilterOperation.h"
 #endif
-#endif
 
 #include "GraphicsContext3D.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 static bool hasBoxDecorationsOrBackgroundImage(const RenderStyle*);
@@ skipping 1995 matching lines @@
     info.addMember(m_childContainmentLayer, "childContainmentLayer");
     info.addMember(m_maskLayer, "maskLayer");
     info.addMember(m_layerForHorizontalScrollbar, "layerForHorizontalScrollbar");
     info.addMember(m_layerForVerticalScrollbar, "layerForVerticalScrollbar");
     info.addMember(m_layerForScrollCorner, "layerForScrollCorner");
     info.addMember(m_scrollingLayer, "scrollingLayer");
     info.addMember(m_scrollingContentsLayer, "scrollingContentsLayer");
 }
 
 } // namespace WebCore