Mac build fix.

TBR=robertphillips

Review URL: https://codereview.chromium.org/45963007

git-svn-id: http://skia.googlecode.com/svn/trunk/src@12039 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/opts/SkMorphology_opts_SSE2.cpp b/opts/SkMorphology_opts_SSE2.cpp
index 6314335..b58fced 100644
--- a/opts/SkMorphology_opts_SSE2.cpp
+++ b/opts/SkMorphology_opts_SSE2.cpp
@@ -7,6 +7,7 @@
 
 
 #include "SkColorPriv.h"
+#include "SkMorphology_opts_SSE2.h"
 
 #include <emmintrin.h>