Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGFEOffsetElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 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,
@@ skipping 21 matching lines @@
     : SVGFilterPrimitiveStandardAttributes(SVGNames::feOffsetTag, document)
     , m_dx(SVGAnimatedNumber::create(this, SVGNames::dxAttr, SVGNumber::create()))
     , m_dy(SVGAnimatedNumber::create(this, SVGNames::dyAttr, SVGNumber::create()))
     , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
 {
     addToPropertyMap(m_dx);
     addToPropertyMap(m_dy);
     addToPropertyMap(m_in1);
 }
 
+void SVGFEOffsetElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_dx);
+    visitor->trace(m_dy);
+    visitor->trace(m_in1);
+    SVGFilterPrimitiveStandardAttributes::trace(visitor);
+}
+
 DEFINE_NODE_FACTORY(SVGFEOffsetElement)
 
 bool SVGFEOffsetElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
         supportedAttributes.add(SVGNames::inAttr);
         supportedAttributes.add(SVGNames::dxAttr);
         supportedAttributes.add(SVGNames::dyAttr);
     }
     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
 }
 
 void SVGFEOffsetElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     parseAttributeNew(name, value);
 }
 
 void SVGFEOffsetElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
         return;
     }
 
     SVGElement::InvalidationGuard invalidationGuard(this);
     invalidate();
 }
 
-PassRefPtr<FilterEffect> SVGFEOffsetElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
+PassRefPtrWillBeRawPtr<FilterEffect> SVGFEOffsetElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
 
     if (!input1)
         return nullptr;
 
-    RefPtr<FilterEffect> effect = FEOffset::create(filter, m_dx->currentValue()->value(), m_dy->currentValue()->value());
+    RefPtrWillBeRawPtr<FilterEffect> effect = FEOffset::create(filter, m_dx->currentValue()->value(), m_dy->currentValue()->value());
     effect->inputEffects().append(input1);
     return effect.release();
 }
 
 } // namespace blink