Revert of Add SkRasterPipeline blitter.

src/core/SkCoreBlitters.h

 /*
  * Copyright 2006 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 SkCoreBlitters_DEFINED
 #define SkCoreBlitters_DEFINED
 
 #include "SkBitmapProcShader.h"
 #include "SkBlitter.h"
 #include "SkBlitRow.h"
 #include "SkShader.h"
 #include "SkSmallAllocator.h"
-#include <memory>
 
 class SkRasterBlitter : public SkBlitter {
 public:
     SkRasterBlitter(const SkPixmap& device) : fDevice(device) {}
 
 protected:
     const SkPixmap fDevice;
 
 private:
     typedef SkBlitter INHERITED;
@@ skipping 177 matching lines @@
        calling the filter, so the blitter can always ignore the colorfilter obj
 
     These pre-conditions must be handled by the caller, in our case
     SkBlitter::Choose(...)
  */
 
 SkBlitter* SkBlitter_ChooseD565(const SkPixmap& device, const SkPaint& paint,
                                 SkShader::Context* shaderContext,
                                 SkTBlitterAllocator* allocator);
 
-
-// Returns nullptr if no SkRasterPipeline blitter can be constructed for this paint.
-std::unique_ptr<SkBlitter> SkCreateRasterPipelineBlitter(const SkPixmap&, const SkPaint&);
-
 #endif