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R=djsollen@google.com

Review URL: https://codereview.chromium.org/19787006

git-svn-id: http://skia.googlecode.com/svn/trunk@10239 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/skpdiff/SkCLImageDiffer.h b/experimental/skpdiff/SkCLImageDiffer.h
index 50cf389..032ee6f 100644
--- a/experimental/skpdiff/SkCLImageDiffer.h
+++ b/experimental/skpdiff/SkCLImageDiffer.h
@@ -8,7 +8,11 @@
 #ifndef SkCLImageDiffer_DEFINED
 #define SkCLImageDiffer_DEFINED
 
-#include <CL/cl.h>
+#if SK_BUILD_FOR_MAC
+#   include <OpenCL/cl.h>
+#else
+#   include <CL/cl.h>
+#endif
 #include "SkTDArray.h"
 
 #include "SkImageDiffer.h"