Remove the CSS_COMPOSITING define, the CSS blending and compositing

bindings/v8/RuntimeEnabledFeatures.h

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
 #endif
 
 #if ENABLE(CSS_REGIONS)
     static void setCSSRegionsEnabled(bool isEnabled) { isCSSRegionsEnabled = isEnabled; }
     static bool cssRegionsEnabled() { return isCSSRegionsEnabled; }
 #else
     static void setCSSRegionsEnabled(bool) { }
     static bool cssRegionsEnabled() { return false; }
 #endif
 
-#if ENABLE(CSS_COMPOSITING)
     static void setCSSCompositingEnabled(bool isEnabled) { isCSSCompositingEnabled = isEnabled; }
     static bool cssCompositingEnabled() { return isCSSCompositingEnabled; }
-#else
-    static void setCSSCompositingEnabled(bool) { }
-    static bool cssCompositingEnabled() { return false; }
-#endif
 
 #if ENABLE(FONT_LOAD_EVENTS)
     static void setFontLoadEventsEnabled(bool isEnabled) { isFontLoadEventsEnabled = isEnabled; }
     static bool fontLoadEventsEnabled() { return isFontLoadEventsEnabled; }
 #else
     static void setFontLoadEventsEnabled(bool) { }
     static bool fontLoadEventsEnabled() { return false; }
 #endif
 
     // Mozilla version
@@ skipping 236 matching lines @@
 
 #if USE(WEBP)
     static bool isWebPInAcceptHeaderEnabled;
 #endif
 
 };
 
 } // namespace WebCore
 
 #endif // RuntimeEnabledFeatures_h