Implement SetWrapperReferenceTo idl attribute within traceWrappers for svg elements

third_party/WebKit/Source/core/svg/SVGPointListTearOff.h

Index: third_party/WebKit/Source/core/svg/SVGPointListTearOff.h
diff --git a/third_party/WebKit/Source/core/svg/SVGPointListTearOff.h b/third_party/WebKit/Source/core/svg/SVGPointListTearOff.h
index 1803d3e9987c36ac5ebc5e8bad8c6981548f7968..c115a8b55b2a4914b897168eca7086eac7fba0d4 100644
--- a/third_party/WebKit/Source/core/svg/SVGPointListTearOff.h
+++ b/third_party/WebKit/Source/core/svg/SVGPointListTearOff.h
@@ -46,6 +46,11 @@ public:
         return new SVGPointListTearOff(target, contextElement, propertyIsAnimVal, attributeName);
     }
 
+    DEFINE_INLINE_VIRTUAL_TRACE_WRAPPERS()
+    {
+        visitor->traceWrappers(contextElement());
+    }
+
 private:
     SVGPointListTearOff(SVGPointList* target, SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = QualifiedName::null())
         : SVGListPropertyTearOffHelper<SVGPointListTearOff, SVGPointList>(target, contextElement, propertyIsAnimVal, attributeName) { }