Oilpan: revert SVG GC mixin constructor workaround.

Source/core/svg/SVGGraphicsElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Google, Inc.
  *
  * 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.
  *
@@ skipping 16 matching lines @@
 #include "core/css/resolver/StyleResolver.h"
 #include "core/layout/svg/LayoutSVGPath.h"
 #include "core/layout/svg/SVGPathData.h"
 #include "core/svg/SVGElementRareData.h"
 #include "platform/transforms/AffineTransform.h"
 
 namespace blink {
 
 SVGGraphicsElement::SVGGraphicsElement(const QualifiedName& tagName, Document& document, ConstructionType constructionType)
     : SVGElement(tagName, document, constructionType)
+    , SVGTests(this)
     , m_transform(SVGAnimatedTransformList::create(this, SVGNames::transformAttr, SVGTransformList::create()))
 {
-    SVGTests::initialize(this);
-
     addToPropertyMap(m_transform);
 }
 
 SVGGraphicsElement::~SVGGraphicsElement()
 {
 }
 
 DEFINE_TRACE(SVGGraphicsElement)
 {
     visitor->trace(m_transform);
@@ skipping 217 matching lines @@
     return new LayoutSVGPath(this);
 }
 
 void SVGGraphicsElement::toClipPath(Path& path)
 {
     updatePathFromGraphicsElement(this, path);
     path.transform(calculateAnimatedLocalTransform());
 }
 
 }