Remove USE(3D_GRAPHICS) as it is always turned on.

Source/core/platform/graphics/filters/custom/FECustomFilter.cpp

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2013 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:
  *
  * 1. Redistributions of source code must retain the above
@@ skipping 13 matching lines @@
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include "config.h"
 
-#if USE(3D_GRAPHICS)
 #include "core/platform/graphics/filters/custom/FECustomFilter.h"
 
 #include "core/platform/graphics/Extensions3D.h"
 #include "core/platform/graphics/GraphicsContext3D.h"
 #include "core/platform/graphics/filters/custom/CustomFilterRenderer.h"
 #include "core/platform/graphics/filters/custom/CustomFilterValidatedProgram.h"
 #include "core/platform/text/TextStream.h"
 #include "core/rendering/RenderTreeAsText.h"
 
 #include <wtf/Uint8ClampedArray.h>
@@ skipping 318 matching lines @@
 {
     writeIndent(ts, indent);
     ts << "[feCustomFilter";
     FilterEffect::externalRepresentation(ts);
     ts << "]\n";
     inputEffect(0)->externalRepresentation(ts, indent + 1);
     return ts;
 }
 
 } // namespace WebCore
-
-#endif // USE(3D_GRAPHICS)