Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGLength.h

Index: Source/core/svg/SVGLength.h
diff --git a/Source/core/svg/SVGLength.h b/Source/core/svg/SVGLength.h
index d518b83709dce5719dfab7f7ffeb5c438ddf857f..b7986d34dc16c64c27c43008ced8a2c3ad994e5d 100644
--- a/Source/core/svg/SVGLength.h
+++ b/Source/core/svg/SVGLength.h
@@ -44,13 +44,13 @@ class SVGLength final : public SVGPropertyBase {
 public:
     typedef SVGLengthTearOff TearOffType;
 
-    static PassRefPtr<SVGLength> create(SVGLengthMode mode = LengthModeOther)
+    static PassRefPtrWillBeRawPtr<SVGLength> create(SVGLengthMode mode = LengthModeOther)
     {
-        return adoptRef(new SVGLength(mode));
+        return adoptRefWillBeNoop(new SVGLength(mode));
     }
 
-    PassRefPtr<SVGLength> clone() const;
-    virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
+    PassRefPtrWillBeRawPtr<SVGLength> clone() const;
+    virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> cloneForAnimation(const String&) const override;
 
     SVGLengthType unitType() const { return static_cast<SVGLengthType>(m_unitType); }
     void setUnitType(SVGLengthType);
@@ -90,15 +90,15 @@ public:
         return !m_valueInSpecifiedUnits;
     }
 
-    static PassRefPtr<SVGLength> fromCSSPrimitiveValue(CSSPrimitiveValue*);
-    static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> toCSSPrimitiveValue(PassRefPtr<SVGLength>);
+    static PassRefPtrWillBeRawPtr<SVGLength> fromCSSPrimitiveValue(CSSPrimitiveValue*);
+    static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> toCSSPrimitiveValue(PassRefPtrWillBeRawPtr<SVGLength>);
     static SVGLengthMode lengthModeForAnimatedLengthAttribute(const QualifiedName&);
 
-    PassRefPtr<SVGLength> blend(PassRefPtr<SVGLength> from, float progress) const;
+    PassRefPtrWillBeRawPtr<SVGLength> blend(PassRefPtrWillBeRawPtr<SVGLength> from, float progress) const;
 
     virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) override;
-    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) override;
-    virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement) override;
+    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> from, PassRefPtrWillBeRawPtr<SVGPropertyBase> to, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) override;
+    virtual float calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement* contextElement) override;
 
     static AnimatedPropertyType classType() { return AnimatedLength; }
 
@@ -111,9 +111,9 @@ private:
     unsigned m_unitType : 4;
 };
 
-inline PassRefPtr<SVGLength> toSVGLength(PassRefPtr<SVGPropertyBase> passBase)
+inline PassRefPtrWillBeRawPtr<SVGLength> toSVGLength(PassRefPtrWillBeRawPtr<SVGPropertyBase> passBase)
 {
-    RefPtr<SVGPropertyBase> base = passBase;
+    RefPtrWillBeRawPtr<SVGPropertyBase> base = passBase;
     ASSERT(base->type() == SVGLength::classType());
     return static_pointer_cast<SVGLength>(base.release());
 }