Port SkBlurImage opts to SkOpts.

src/opts/SkOpts_neon.cpp

Index: src/opts/SkOpts_neon.cpp
diff --git a/src/opts/SkOpts_neon.cpp b/src/opts/SkOpts_neon.cpp
index 775cdd4bbcea601a6ddacad61bcd0b29fc1c741e..f06898d3ec7891f28cb7f296049ec0328008aee6 100644
--- a/src/opts/SkOpts_neon.cpp
+++ b/src/opts/SkOpts_neon.cpp
@@ -7,6 +7,8 @@
 
 #include "SkFloatingPoint.h"
 #include "SkOpts.h"
+#define SK_OPTS_NS neon
+#include "SkBlurImage_opts.h"
 #include "SkXfermode_opts.h"
 
 namespace neon {  // This helps identify methods from this file when debugging / profiling.
@@ -71,5 +73,10 @@ namespace SkOpts {
         memset16        = neon::memset16;
         memset32        = neon::memset32;
         create_xfermode = SkCreate4pxXfermode;
+
+        static const auto x = neon::kX, y = neon::kY;
+        box_blur_xx = neon::box_blur<x,x>;
+        box_blur_xy = neon::box_blur<x,y>;
+        box_blur_yx = neon::box_blur<y,x>;
     }
 }