Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGNumberTearOff.h

Index: Source/core/svg/SVGNumberTearOff.h
diff --git a/Source/core/svg/SVGNumberTearOff.h b/Source/core/svg/SVGNumberTearOff.h
index b70e52233f18d3362db1a091177839e43d8af4cb..5f7b6ab58b435003c58bd14d9a229b11dd6c34e8 100644
--- a/Source/core/svg/SVGNumberTearOff.h
+++ b/Source/core/svg/SVGNumberTearOff.h
@@ -40,16 +40,16 @@ namespace blink {
 class SVGNumberTearOff : public SVGPropertyTearOff<SVGNumber>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtr<SVGNumberTearOff> create(PassRefPtr<SVGNumber> target, SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = QualifiedName::null())
+    static PassRefPtrWillBeRawPtr<SVGNumberTearOff> create(PassRefPtrWillBeRawPtr<SVGNumber> target, SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = QualifiedName::null())
     {
-        return adoptRef(new SVGNumberTearOff(target, contextElement, propertyIsAnimVal, attributeName));
+        return adoptRefWillBeNoop(new SVGNumberTearOff(target, contextElement, propertyIsAnimVal, attributeName));
     }
 
     void setValue(float, ExceptionState&);
     float value() { return target()->value(); }
 
 protected:
-    SVGNumberTearOff(PassRefPtr<SVGNumber>, SVGElement* contextElement, PropertyIsAnimValType, const QualifiedName& attributeName = QualifiedName::null());
+    SVGNumberTearOff(PassRefPtrWillBeRawPtr<SVGNumber>, SVGElement* contextElement, PropertyIsAnimValType, const QualifiedName& attributeName = QualifiedName::null());
 };
 
 } // namespace blink