Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGFitToViewBox.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Samsung Electronics. All rights reserved.
  *
  * 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.
  *
@@ skipping 17 matching lines @@
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/transforms/AffineTransform.h"
 #include "wtf/text/StringImpl.h"
 
 namespace blink {
 
 class SVGAnimatedViewBoxRect : public SVGAnimatedRect {
 public:
-    static PassRefPtr<SVGAnimatedRect> create(SVGElement* contextElement)
+    static PassRefPtrWillBeRawPtr<SVGAnimatedRect> create(SVGElement* contextElement)
     {
-        return adoptRef(new SVGAnimatedViewBoxRect(contextElement));
+        return adoptRefWillBeNoop(new SVGAnimatedViewBoxRect(contextElement));
     }
 
     void setBaseValueAsString(const String&, SVGParsingError&) override;
 
 protected:
     SVGAnimatedViewBoxRect(SVGElement* contextElement)
         : SVGAnimatedRect(contextElement, SVGNames::viewBoxAttr)
     {
     }
 };
@@ skipping 19 matching lines @@
     : m_viewBox(SVGAnimatedViewBoxRect::create(element))
     , m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(element, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create()))
 {
     ASSERT(element);
     if (propertyMapPolicy == PropertyMapPolicyAdd) {
         element->addToPropertyMap(m_viewBox);
         element->addToPropertyMap(m_preserveAspectRatio);
     }
 }
 
-AffineTransform SVGFitToViewBox::viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtr<SVGPreserveAspectRatio> preserveAspectRatio, float viewWidth, float viewHeight)
+void SVGFitToViewBox::trace(Visitor* visitor)
+{
+    visitor->trace(m_viewBox);
+    visitor->trace(m_preserveAspectRatio);
+}
+
+AffineTransform SVGFitToViewBox::viewBoxToViewTransform(const FloatRect& viewBoxRect, PassRefPtrWillBeRawPtr<SVGPreserveAspectRatio> preserveAspectRatio, float viewWidth, float viewHeight)
 {
     if (!viewBoxRect.width() || !viewBoxRect.height() || !viewWidth || !viewHeight)
         return AffineTransform();
 
     return preserveAspectRatio->getCTM(viewBoxRect.x(), viewBoxRect.y(), viewBoxRect.width(), viewBoxRect.height(), viewWidth, viewHeight);
 }
 
 bool SVGFitToViewBox::isKnownAttribute(const QualifiedName& attrName)
 {
     return attrName == SVGNames::viewBoxAttr || attrName == SVGNames::preserveAspectRatioAttr;
 }
 
 void SVGFitToViewBox::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
 {
     supportedAttributes.add(SVGNames::viewBoxAttr);
     supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
 }
 
 void SVGFitToViewBox::updateViewBox(const FloatRect& rect)
 {
     ASSERT(m_viewBox);
     m_viewBox->baseValue()->setValue(rect);
 }
 
 }