Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGMatrixTearOff.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 SVGMatrixTearOff_h
 #define SVGMatrixTearOff_h
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "platform/heap/Handle.h"
 #include "platform/transforms/AffineTransform.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
 class SVGTransformTearOff;
 
 // SVGMatrixTearOff wraps a AffineTransform for Javascript.
 // Its instance can either hold a static value, or this can be teared off from |SVGTransform.matrix|.
 // This does not derive from SVGPropertyTearOff, as its instances are never tied to an animated property nor an XML attribute.
-class SVGMatrixTearOff final : public RefCounted<SVGMatrixTearOff>, public ScriptWrappable {
+class SVGMatrixTearOff final : public RefCountedWillBeGarbageCollectedFinalized<SVGMatrixTearOff>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtr<SVGMatrixTearOff> create(const AffineTransform& value)
+    static PassRefPtrWillBeRawPtr<SVGMatrixTearOff> create(const AffineTransform& value)
     {
-        return adoptRef(new SVGMatrixTearOff(value));
+        return adoptRefWillBeNoop(new SVGMatrixTearOff(value));
     }
 
-    static PassRefPtr<SVGMatrixTearOff> create(SVGTransformTearOff* target)
+    static PassRefPtrWillBeRawPtr<SVGMatrixTearOff> create(SVGTransformTearOff* target)
     {
-        return adoptRef(new SVGMatrixTearOff(target));
+        return adoptRefWillBeNoop(new SVGMatrixTearOff(target));
     }
 
     ~SVGMatrixTearOff();
 
     double a() { return value().a(); }
     double b() { return value().b(); }
     double c() { return value().c(); }
     double d() { return value().d(); }
     double e() { return value().e(); }
     double f() { return value().f(); }
 
     void setA(double, ExceptionState&);
     void setB(double, ExceptionState&);
     void setC(double, ExceptionState&);
     void setD(double, ExceptionState&);
     void setE(double, ExceptionState&);
     void setF(double, ExceptionState&);
 
-    PassRefPtr<SVGMatrixTearOff> translate(double tx, double ty);
-    PassRefPtr<SVGMatrixTearOff> scale(double);
-    PassRefPtr<SVGMatrixTearOff> scaleNonUniform(double sx, double sy);
-    PassRefPtr<SVGMatrixTearOff> rotate(double);
-    PassRefPtr<SVGMatrixTearOff> flipX();
-    PassRefPtr<SVGMatrixTearOff> flipY();
-    PassRefPtr<SVGMatrixTearOff> skewX(double);
-    PassRefPtr<SVGMatrixTearOff> skewY(double);
-    PassRefPtr<SVGMatrixTearOff> multiply(PassRefPtr<SVGMatrixTearOff>);
-    PassRefPtr<SVGMatrixTearOff> inverse(ExceptionState&);
-    PassRefPtr<SVGMatrixTearOff> rotateFromVector(double x, double y, ExceptionState&);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> translate(double tx, double ty);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> scale(double);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> scaleNonUniform(double sx, double sy);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> rotate(double);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> flipX();
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> flipY();
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> skewX(double);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> skewY(double);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> multiply(PassRefPtrWillBeRawPtr<SVGMatrixTearOff>);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> inverse(ExceptionState&);
+    PassRefPtrWillBeRawPtr<SVGMatrixTearOff> rotateFromVector(double x, double y, ExceptionState&);
 
     SVGTransformTearOff* contextTransform() { return m_contextTransform; }
 
     const AffineTransform& value() const;
 
+    virtual void trace(Visitor*);
+
 private:
-    SVGMatrixTearOff(const AffineTransform&);
-    SVGMatrixTearOff(SVGTransformTearOff*);
+    explicit SVGMatrixTearOff(const AffineTransform&);
+    explicit SVGMatrixTearOff(SVGTransformTearOff*);
 
     AffineTransform* mutableValue();
     void commitChange();
 
     AffineTransform m_staticValue;
 
-    // FIXME: oilpan: This is raw-ptr to avoid reference cycles. Should be Member in oilpan.
-    SVGTransformTearOff* m_contextTransform;
+    RawPtrWillBeMember<SVGTransformTearOff> m_contextTransform;
 };
 
 } // namespace blink
 
 #endif // SVGMatrixTearOff_h