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

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

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. 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.
@@ skipping 11 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/GraphicsContext3D.h"
 #include "core/platform/graphics/filters/custom/CustomFilterMesh.h"
 #include "core/platform/graphics/filters/custom/CustomFilterMeshGenerator.h"
 
 namespace WebCore {
 
 CustomFilterMesh::CustomFilterMesh(GraphicsContext3D* context, unsigned columns, unsigned rows,
     const FloatRect& meshBox, CustomFilterMeshType meshType)
     : m_context(context)
     , m_verticesBufferObject(0)
@@ skipping 17 matching lines @@
 }
 
 CustomFilterMesh::~CustomFilterMesh()
 {
     m_context->makeContextCurrent();
     m_context->deleteBuffer(m_verticesBufferObject);
     m_context->deleteBuffer(m_elementsBufferObject);
 }
 
 } // namespace WebCore
-
-#endif // USE(3D_GRAPHICS)
-