Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathSegArcAbs.h

Index: Source/core/svg/SVGPathSegArcAbs.h
diff --git a/Source/core/svg/SVGPathSegArcAbs.h b/Source/core/svg/SVGPathSegArcAbs.h
index cb6bbd6f8a4d9d9dd7d2174abe9947aedb33d95d..6d68132545b18ecd1f4ead50d1d736c2077754b8 100644
--- a/Source/core/svg/SVGPathSegArcAbs.h
+++ b/Source/core/svg/SVGPathSegArcAbs.h
@@ -29,9 +29,9 @@ namespace blink {
 class SVGPathSegArcAbs final : public SVGPathSegArc {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtr<SVGPathSegArcAbs> create(SVGPathElement* element, float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)
+    static PassRefPtrWillBeRawPtr<SVGPathSegArcAbs> create(SVGPathElement* element, float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)
     {
-        return adoptRef(new SVGPathSegArcAbs(element, x, y, r1, r2, angle, largeArcFlag, sweepFlag));
+        return adoptRefWillBeNoop(new SVGPathSegArcAbs(element, x, y, r1, r2, angle, largeArcFlag, sweepFlag));
     }
 
 private: