Cleanup patch to move all of SkImageFilterUtils into SkImageFilter.

include/core/SkImageFilterUtils.h

-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkImageFilterUtils_DEFINED
-#define SkImageFilterUtils_DEFINED
-
-#if SK_SUPPORT_GPU
-
-#include "SkImageFilter.h"
-
-class SkBitmap;
-class GrTexture;
-class SkImageFilter;
-
-class SK_API SkImageFilterUtils {
-public:
-    /**
-     * Wrap the given texture in a texture-backed SkBitmap.
-     */
-    static bool WrapTexture(GrTexture* texture, int width, int height, SkBitmap* result);
-
-    /**
-     * Recursively evaluate the given filter on the GPU.  If filter is NULL,
-     * this function returns src.  If the filter has no GPU implementation, it
-     * will be processed in software and uploaded to the GPU.
-     */
-    static bool GetInputResultGPU(const SkImageFilter* filter, SkImageFilter::Proxy* proxy,
-                                  const SkBitmap& src, const SkMatrix& ctm, SkBitmap* result,
-                                  SkIPoint* offset);
-};
-
-#endif
-
-#endif