Add missing include in SkBlurImage optimization

src/opts/SkBlurImage_opts_SSE2.cpp

Index: src/opts/SkBlurImage_opts_SSE2.cpp
diff --git a/src/opts/SkBlurImage_opts_SSE2.cpp b/src/opts/SkBlurImage_opts_SSE2.cpp
index 373e91fef13f4ac06cb873902e820ca65a294d25..ba05fb93ecdf49d574af57018fd18cb5b335f475 100644
--- a/src/opts/SkBlurImage_opts_SSE2.cpp
+++ b/src/opts/SkBlurImage_opts_SSE2.cpp
@@ -10,6 +10,9 @@
 #include "SkBlurImage_opts_SSE2.h"
 #include "SkColorPriv.h"
 #include "SkRect.h"
+#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
+#include <smmintrin.h>

[f(malita), 2014/05/20 22:05:01]

This appears to be causing errors on Chromium's Mac builders:
http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Mac/bu...

Any idea what's going on?

[henrik.smiding, 2014/05/21 09:00:37]

The only way I can see this happening is if __SSE4_2__ is set, but not
__SSE4_1__. Are you setting __SSE4_2__ manually or via -msse4? When you set
-msse4 gcc will set all 'lower' SSE-level defines as well. This is what Skia's
SSE-level detection is counting on.

+#endif
 
 namespace {
 enum BlurDirection {