Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGAnimatedNumberOptionalNumber.h

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SVGAnimatedNumberOptionalNumber_h
 #define SVGAnimatedNumberOptionalNumber_h
 
 #include "core/svg/SVGAnimatedNumber.h"
 #include "core/svg/SVGNumberOptionalNumber.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 // SVG Spec: http://www.w3.org/TR/SVG11/types.html <number-optional-number>
 // Unlike other SVGAnimated* class, this class is not exposed to Javascript directly,
 // while DOM attribute and SMIL animations operate on this class.
 // From Javascript, the two SVGAnimatedNumbers |firstNumber| and |secondNumber| are used.
 // For example, see SVGFEDropShadowElement::stdDeviation{X,Y}()
 class SVGAnimatedNumberOptionalNumber : public SVGAnimatedPropertyCommon<SVGNumberOptionalNumber> {
 public:
-    static PassRefPtr<SVGAnimatedNumberOptionalNumber> create(SVGElement* contextElement, const QualifiedName& attributeName, float initialFirstValue = 0, float initialSecondValue = 0)
+    static PassRefPtrWillBeRawPtr<SVGAnimatedNumberOptionalNumber> create(SVGElement* contextElement, const QualifiedName& attributeName, float initialFirstValue = 0, float initialSecondValue = 0)
     {
-        return adoptRef(new SVGAnimatedNumberOptionalNumber(contextElement, attributeName, initialFirstValue, initialSecondValue));
+        return adoptRefWillBeNoop(new SVGAnimatedNumberOptionalNumber(contextElement, attributeName, initialFirstValue, initialSecondValue));
     }
 
-    virtual void setAnimatedValue(PassRefPtr<SVGPropertyBase>) override;
+    virtual void setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>) override;
     virtual bool needsSynchronizeAttribute() override;
     virtual void animationEnded() override;
 
     SVGAnimatedNumber* firstNumber() { return m_firstNumber.get(); }
     SVGAnimatedNumber* secondNumber() { return m_secondNumber.get(); }
 
+    virtual void trace(Visitor*) override;
+
 protected:
     SVGAnimatedNumberOptionalNumber(SVGElement* contextElement, const QualifiedName& attributeName, float initialFirstValue, float initialSecondValue);
 
-    RefPtr<SVGAnimatedNumber> m_firstNumber;
-    RefPtr<SVGAnimatedNumber> m_secondNumber;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_firstNumber;
+    RefPtrWillBeMember<SVGAnimatedNumber> m_secondNumber;
 };
 
 } // namespace blink
 
 #endif // SVGAnimatedNumberOptionalNumber_h