Add CanvasProperty for drawCircle

Change-Id: Icbcc030f5033d2094e567d7c519b9d672f2aac1c
diff --git a/libs/hwui/DisplayList.h b/libs/hwui/DisplayList.h
index fe70d13..eaeb772 100644
--- a/libs/hwui/DisplayList.h
+++ b/libs/hwui/DisplayList.h
@@ -140,6 +140,14 @@
     void addChild(DrawDisplayListOp* childOp);
     const Vector<DrawDisplayListOp*>& children() { return mChildren; }
 
+    void refProperty(CanvasPropertyPrimitive* prop) {
+        mReferenceHolders.push(prop);
+    }
+
+    void refProperty(CanvasPropertyPaint* prop) {
+        mReferenceHolders.push(prop);
+    }
+
 private:
     Vector< sp<VirtualLightRefBase> > mReferenceHolders;