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

Source/core/platform/graphics/filters/custom/CustomFilterMeshGenerator.h

 /*
  * 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 12 matching lines @@
  * 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.
  */
 
 #ifndef CustomFilterMeshGenerator_h
 #define CustomFilterMeshGenerator_h
 
-#if USE(3D_GRAPHICS)
-
 #include "core/platform/graphics/FloatRect.h"
 #include "core/platform/graphics/filters/custom/CustomFilterConstants.h"
 #include "core/platform/graphics/filters/custom/CustomFilterOperation.h"
 
 namespace WebCore {
 
 class CustomFilterMeshGenerator {
 public:
     // Lines and columns are the values passed in CSS. The result is vertex mesh that has 'rows' numbers of rows
     // and 'columns' number of columns with a total of 'rows + 1' * 'columns + 1' vertices.
@@ skipping 68 matching lines @@
     CustomFilterMeshType m_meshType;
     IntSize m_points;
     IntSize m_tiles;
     FloatSize m_tileSizeInPixels;
     FloatSize m_tileSizeInDeviceSpace;
     FloatRect m_meshBox;
 };
 
 } // namespace WebCore
 
-#endif // USE(3D_GRAPHICS)
-
 #endif // CustomFilterMeshGenerator_h