Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathConsumer.h

 /*
  * Copyright (C) 2002, 2003 The Karbon Developers
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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.
  *
  * 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 SVGPathConsumer_h
 #define SVGPathConsumer_h
 
 #include "platform/geometry/FloatPoint.h"
+#include "platform/heap/Handle.h"
 #include "wtf/FastAllocBase.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 enum PathCoordinateMode {
     AbsoluteCoordinates,
     RelativeCoordinates
 };
 
 enum PathParsingMode {
     NormalizedParsing,
     UnalteredParsing
 };
 
-class SVGPathConsumer {
-    WTF_MAKE_NONCOPYABLE(SVGPathConsumer); WTF_MAKE_FAST_ALLOCATED;
+class SVGPathConsumer : public NoBaseWillBeGarbageCollectedFinalized<SVGPathConsumer> {
+    WTF_MAKE_NONCOPYABLE(SVGPathConsumer); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     SVGPathConsumer() { }
+    virtual ~SVGPathConsumer() { }
+    virtual void trace(Visitor*) { }
+
     virtual void incrementPathSegmentCount() = 0;
     virtual bool continueConsuming() = 0;
     virtual void cleanup() = 0;
 
     // Used in UnalteredParsing/NormalizedParsing modes.
     virtual void moveTo(const FloatPoint&, bool closed, PathCoordinateMode) = 0;
     virtual void lineTo(const FloatPoint&, PathCoordinateMode) = 0;
     virtual void curveToCubic(const FloatPoint&, const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
     virtual void closePath() = 0;
 
     // Only used in UnalteredParsing mode.
     virtual void lineToHorizontal(float, PathCoordinateMode) = 0;
     virtual void lineToVertical(float, PathCoordinateMode) = 0;
     virtual void curveToCubicSmooth(const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
     virtual void curveToQuadratic(const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
     virtual void curveToQuadraticSmooth(const FloatPoint&, PathCoordinateMode) = 0;
     virtual void arcTo(float, float, float, bool largeArcFlag, bool sweepFlag, const FloatPoint&, PathCoordinateMode) = 0;
-
-protected:
-    virtual ~SVGPathConsumer() { }
 };
 
 } // namespace blink
 
 #endif // SVGPathConsumer_h