Port SkBlurImage opts to SkOpts.

src/opts/SkOpts_sse41.cpp

Index: src/opts/SkOpts_sse41.cpp
diff --git a/src/opts/SkOpts_sse41.cpp b/src/opts/SkOpts_sse41.cpp
index 72e56824637a58b13571cdf371bc31827cdf3bff..8e0500bcb5870ebf8488df7260322bd6c6ae30bb 100644
--- a/src/opts/SkOpts_sse41.cpp
+++ b/src/opts/SkOpts_sse41.cpp
@@ -6,9 +6,14 @@
  */
 
 #include "SkOpts.h"
+#define SK_OPTS_NS sse41
+#include "SkBlurImageFilter_opts.h"
 
 namespace SkOpts {
     void Init_sse41() {
-
+        static const auto x = sse41::kX, y = sse41::kY;
+        box_blur_xx = sse41::box_blur<x,x>;
+        box_blur_xy = sse41::box_blur<x,y>;
+        box_blur_yx = sse41::box_blur<y,x>;
     }
 }