Sk4px blit mask.

src/opts/SkBlitRow_opts_SSE2.h

 /*
  * Copyright 2009 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 SkBlitRow_opts_SSE2_DEFINED
 #define SkBlitRow_opts_SSE2_DEFINED
 
 #include "SkBlitRow.h"
 
 void S32_Blend_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst,
                               const SkPMColor* SK_RESTRICT src,
                               int count, U8CPU alpha);
 
 void S32A_Opaque_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst,
                                 const SkPMColor* SK_RESTRICT src,
                                 int count, U8CPU alpha);
 
 void S32A_Blend_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst,
                                const SkPMColor* SK_RESTRICT src,
                                int count, U8CPU alpha);
 
 void Color32A_D565_SSE2(uint16_t dst[], SkPMColor src, int count, int x,
                         int y);
 
-void SkARGB32_A8_BlitMask_SSE2(void* device, size_t dstRB, const void* mask,
-                               size_t maskRB, SkColor color,
-                               int width, int height);
-
 void SkBlitLCD16Row_SSE2(SkPMColor dst[], const uint16_t src[],
                          SkColor color, int width, SkPMColor);
 void SkBlitLCD16OpaqueRow_SSE2(SkPMColor dst[], const uint16_t src[],
                                SkColor color, int width, SkPMColor opaqueDst);
 
 void S32_D565_Opaque_SSE2(uint16_t* SK_RESTRICT dst,
                           const SkPMColor* SK_RESTRICT src, int count,
                           U8CPU alpha, int /*x*/, int /*y*/);
 void S32A_D565_Opaque_SSE2(uint16_t* SK_RESTRICT dst,
                            const SkPMColor* SK_RESTRICT src,
                            int count, U8CPU alpha, int /*x*/, int /*y*/);
 void S32_D565_Opaque_Dither_SSE2(uint16_t* SK_RESTRICT dst,
                                  const SkPMColor* SK_RESTRICT src,
                                  int count, U8CPU alpha, int x, int y);
 void S32A_D565_Opaque_Dither_SSE2(uint16_t* SK_RESTRICT dst,
                                   const SkPMColor* SK_RESTRICT src,
                                   int count, U8CPU alpha, int x, int y);
 #endif