Remove 3D_RENDERING define from Blink

Source/WTF/wtf/FeatureDefines.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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
@@ skipping 46 matching lines @@
 #endif
 #endif
 
 /* ENABLE macro defaults for WebCore */
 /* Do not use PLATFORM() tests in this section ! */
 
 #if !defined(ENABLE_3D_PLUGIN)
 #define ENABLE_3D_PLUGIN 0
 #endif
 
-#if !defined(ENABLE_3D_RENDERING)
-#define ENABLE_3D_RENDERING 0
-#endif
-
 #if !defined(ENABLE_8BIT_TEXTRUN)
 #define ENABLE_8BIT_TEXTRUN 0
 #endif
 
 #if !defined(ENABLE_ACCELERATED_2D_CANVAS)
 #define ENABLE_ACCELERATED_2D_CANVAS 0
 #endif
 
 #if !defined(ENABLE_ACCELERATED_OVERFLOW_SCROLLING)
 #define ENABLE_ACCELERATED_OVERFLOW_SCROLLING 0
@@ skipping 365 matching lines @@
 
 #if ENABLE(SVG_FONTS) && !ENABLE(SVG)
 #error "ENABLE(SVG_FONTS) requires ENABLE(SVG)"
 #endif
 
 #if ENABLE(VIDEO_TRACK) && !ENABLE(VIDEO)
 #error "ENABLE(VIDEO_TRACK) requires ENABLE(VIDEO)"
 #endif
 
 #endif /* WTF_FeatureDefines_h */