Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathParser.cpp

 /*
  * 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
@@ skipping 15 matching lines @@
 
 #include "core/svg/SVGPathSource.h"
 #include "platform/transforms/AffineTransform.h"
 #include "wtf/MathExtras.h"
 
 static const float gOneOverThree = 1 / 3.f;
 
 namespace blink {
 
 SVGPathParser::SVGPathParser()
-    : m_consumer(0)
+    : m_source(nullptr)
+    , m_consumer(nullptr)
 {
 }
 
+void SVGPathParser::trace(Visitor* visitor)
+{
+    visitor->trace(m_source);
+    visitor->trace(m_consumer);
+}
+
 void SVGPathParser::parseClosePathSegment()
 {
     // Reset m_currentPoint for the next path.
     if (m_pathParsingMode == NormalizedParsing)
         m_currentPoint = m_subPathPoint;
     m_closePath = true;
     m_consumer->closePath();
 }
 
 bool SVGPathParser::parseMoveToSegment()
@@ skipping 345 matching lines @@
 
     return false;
 }
 
 void SVGPathParser::cleanup()
 {
     ASSERT(m_source);
     ASSERT(m_consumer);
 
     m_consumer->cleanup();
-    m_source = 0;
-    m_consumer = 0;
+    m_source = nullptr;
+    m_consumer = nullptr;
 }
 
 // This works by converting the SVG arc to "simple" beziers.
 // Partly adapted from Niko's code in kdelibs/kdecore/svgicons.
 // See also SVG implementation notes: http://www.w3.org/TR/SVG/implnote.html#ArcConversionEndpointToCenter
 bool SVGPathParser::decomposeArcToCubic(float angle, float rx, float ry, FloatPoint& point1, FloatPoint& point2, bool largeArcFlag, bool sweepFlag)
 {
     FloatSize midPointDistance = point1 - point2;
     midPointDistance.scale(0.5f);
 
@@ skipping 69 matching lines @@
         point2 = targetPoint;
         point2.move(t * sinEndTheta, -t * cosEndTheta);
 
         m_consumer->curveToCubic(pointTransform.mapPoint(point1), pointTransform.mapPoint(point2),
                                  pointTransform.mapPoint(targetPoint), AbsoluteCoordinates);
     }
     return true;
 }
 
 }