override new virtual onDrawDRRect in util canvas subclasses

src/utils/SkProxyCanvas.cpp

Index: src/utils/SkProxyCanvas.cpp
diff --git a/src/utils/SkProxyCanvas.cpp b/src/utils/SkProxyCanvas.cpp
index f530313b162d2e92146d07a01d4eb411a7a32ca7..245e0a69695d5c5d73569e87478ba315dca7cfa7 100644
--- a/src/utils/SkProxyCanvas.cpp
+++ b/src/utils/SkProxyCanvas.cpp
@@ -95,6 +95,11 @@ void SkProxyCanvas::drawRRect(const SkRRect& rrect, const SkPaint& paint) {
     fProxy->drawRRect(rrect, paint);
 }
 
+void SkProxyCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner,
+                                 const SkPaint& paint) {
+    fProxy->drawDRRect(outer, inner, paint);
+}
+
 void SkProxyCanvas::drawPath(const SkPath& path, const SkPaint& paint) {
     fProxy->drawPath(path, paint);
 }