Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathSegClosePath.h

Index: Source/core/svg/SVGPathSegClosePath.h
diff --git a/Source/core/svg/SVGPathSegClosePath.h b/Source/core/svg/SVGPathSegClosePath.h
index 5c5052c39215666406e2586c6cc4b57319ea9596..12b1eb7afb462e2378e67f37884527575946a854 100644
--- a/Source/core/svg/SVGPathSegClosePath.h
+++ b/Source/core/svg/SVGPathSegClosePath.h
@@ -28,9 +28,9 @@ namespace blink {
 class SVGPathSegClosePath final : public SVGPathSegWithContext {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtr<SVGPathSegClosePath> create(SVGPathElement* element)
+    static PassRefPtrWillBeRawPtr<SVGPathSegClosePath> create(SVGPathElement* element)
     {
-        return adoptRef(new SVGPathSegClosePath(element));
+        return adoptRefWillBeNoop(new SVGPathSegClosePath(element));
     }
 
 private: