Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGFilterPrimitiveStandardAttributes.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef SVGFilterPrimitiveStandardAttributes_h
 #define SVGFilterPrimitiveStandardAttributes_h
 
 #include "core/svg/SVGAnimatedLength.h"
 #include "core/svg/SVGAnimatedString.h"
 #include "core/svg/SVGElement.h"
+#include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Filter;
 class FilterEffect;
 class SVGFilterBuilder;
 
 class SVGFilterPrimitiveStandardAttributes : public SVGElement {
     // No DEFINE_WRAPPERTYPEINFO() here because a) this class is never
     // instantiated, and b) we don't generate corresponding V8T.h or V8T.cpp.
     // The subclasses must write DEFINE_WRAPPERTYPEINFO().
 public:
     void setStandardAttributes(FilterEffect*) const;
 
-    virtual PassRefPtr<FilterEffect> build(SVGFilterBuilder*, Filter* filter) = 0;
+    virtual PassRefPtrWillBeRawPtr<FilterEffect> build(SVGFilterBuilder*, Filter*) = 0;
     // Returns true, if the new value is different from the old one.
     virtual bool setFilterEffectAttribute(FilterEffect*, const QualifiedName&);
 
     // JS API
     SVGAnimatedLength* x() const { return m_x.get(); }
     SVGAnimatedLength* y() const { return m_y.get(); }
     SVGAnimatedLength* width() const { return m_width.get(); }
     SVGAnimatedLength* height() const { return m_height.get(); }
     SVGAnimatedString* result() const { return m_result.get(); }
 
+    virtual void trace(Visitor*) override;
+
 protected:
     SVGFilterPrimitiveStandardAttributes(const QualifiedName&, Document&);
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
     virtual void svgAttributeChanged(const QualifiedName&) override;
     virtual void childrenChanged(const ChildrenChange&) override;
 
     void invalidate();
     void primitiveAttributeChanged(const QualifiedName&);
 
 private:
     virtual bool isFilterEffect() const override final { return true; }
 
     virtual RenderObject* createRenderer(RenderStyle*) override final;
     virtual bool rendererIsNeeded(const RenderStyle&) override final;
 
-    RefPtr<SVGAnimatedLength> m_x;
-    RefPtr<SVGAnimatedLength> m_y;
-    RefPtr<SVGAnimatedLength> m_width;
-    RefPtr<SVGAnimatedLength> m_height;
-    RefPtr<SVGAnimatedString> m_result;
+    RefPtrWillBeMember<SVGAnimatedLength> m_x;
+    RefPtrWillBeMember<SVGAnimatedLength> m_y;
+    RefPtrWillBeMember<SVGAnimatedLength> m_width;
+    RefPtrWillBeMember<SVGAnimatedLength> m_height;
+    RefPtrWillBeMember<SVGAnimatedString> m_result;
 };
 
 void invalidateFilterPrimitiveParent(SVGElement*);
 
 } // namespace blink
 
 #endif // SVGFilterPrimitiveStandardAttributes_h