Sk4px blit mask.

src/opts/SkOpts_neon.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkOpts.h"
 
 #define SK_OPTS_NS neon
+#include "SkBlitMask_opts.h"
 #include "SkBlurImageFilter_opts.h"
 #include "SkFloatingPoint_opts.h"
 #include "SkMorphologyImageFilter_opts.h"
 #include "SkTextureCompressor_opts.h"
 #include "SkUtils_opts.h"
 #include "SkXfermode_opts.h"
 
 namespace SkOpts {
     void Init_neon() {
         rsqrt           = neon::rsqrt;
         memset16        = neon::memset16;
         memset32        = neon::memset32;
         create_xfermode = SkCreate4pxXfermode;
 
         box_blur_xx = neon::box_blur_xx;
         box_blur_xy = neon::box_blur_xy;
         box_blur_yx = neon::box_blur_yx;
 
         dilate_x = neon::dilate_x;
         dilate_y = neon::dilate_y;
          erode_x = neon::erode_x;
          erode_y = neon::erode_y;
 
         texture_compressor    = neon::texture_compressor;
         fill_block_dimensions = neon::fill_block_dimensions;
+
+        blit_mask_d32_a8 = neon::blit_mask_d32_a8;
     }
 }