Add __STDC_LIMIT_MACROS to SkDraw.cpp.
diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index bbe99f5..7744b99 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -4,6 +4,7 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#define __STDC_LIMIT_MACROS
 
 #include "SkDraw.h"
 #include "SkBlitter.h"