1 files changed, 2 insertions, 0 deletions
diff --git a/include/effects/SkArithmeticMode.h b/include/effects/SkArithmeticMode.h
index dc5493f774..9de332caef 100644
--- a/include/effects/SkArithmeticMode.h
+++ b/include/effects/SkArithmeticMode.h
@@ -25,6 +25,8 @@ public:
     static SkXfermode* Create(SkScalar k1, SkScalar k2,
                               SkScalar k3, SkScalar k4);
 
+    SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP();
+
 private:
     typedef SkXfermode INHERITED;
 };