Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathBlender.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010, 2011. 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
@@ skipping 10 matching lines @@
 #include "core/svg/SVGPathBlender.h"
 
 #include "core/svg/SVGPathSeg.h"
 #include "core/svg/SVGPathSource.h"
 #include "platform/animation/AnimationUtilities.h"
 #include "wtf/TemporaryChange.h"
 
 namespace blink {
 
 SVGPathBlender::SVGPathBlender()
-    : m_fromSource(0)
-    , m_toSource(0)
-    , m_consumer(0)
+    : m_fromSource(nullptr)
+    , m_toSource(nullptr)
+    , m_consumer(nullptr)
     , m_progress(0)
     , m_addTypesCount(0)
     , m_isInFirstHalfOfAnimation(false)
 {
 }
 
+void SVGPathBlender::trace(Visitor* visitor)
+{
+    visitor->trace(m_fromSource);
+    visitor->trace(m_toSource);
+    visitor->trace(m_consumer);
+}
+
 // Helper functions
 static inline FloatPoint blendFloatPoint(const FloatPoint& a, const FloatPoint& b, float progress)
 {
     return FloatPoint(blend(a.x(), b.x(), progress), blend(a.y(), b.y(), progress));
 }
 
 float SVGPathBlender::blendAnimatedDimensonalFloat(float from, float to, FloatBlendMode blendMode)
 {
     if (m_addTypesCount) {
         ASSERT(m_fromMode == m_toMode);
@@ skipping 342 matching lines @@
     return true;
 }
 
 void SVGPathBlender::cleanup()
 {
     ASSERT(m_toSource);
     ASSERT(m_fromSource);
     ASSERT(m_consumer);
 
     m_consumer->cleanup();
-    m_toSource = 0;
-    m_fromSource = 0;
-    m_consumer = 0;
+    m_toSource = nullptr;
+    m_fromSource = nullptr;
+    m_consumer = nullptr;
     m_fromCurrentPoint = FloatPoint();
     m_toCurrentPoint = FloatPoint();
 }
 
 }