Replace RenderArena with PartitionAlloc.

Source/core/svg/SVGGElement.cpp

Index: Source/core/svg/SVGGElement.cpp
diff --git a/Source/core/svg/SVGGElement.cpp b/Source/core/svg/SVGGElement.cpp
index 14558c020ed7d5d084b149224a9ea6a3c8856662..420a77d383db465bd25bf61b043ed1356cae55cc 100644
--- a/Source/core/svg/SVGGElement.cpp
+++ b/Source/core/svg/SVGGElement.cpp
@@ -96,16 +96,16 @@ void SVGGElement::svgAttributeChanged(const QualifiedName& attrName)
         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
 }
 
-RenderObject* SVGGElement::createRenderer(RenderArena* arena, RenderStyle* style)
+RenderObject* SVGGElement::createRenderer(RenderStyle* style)
 {
     // SVG 1.1 testsuite explicitely uses constructs like <g display="none"><linearGradient>
     // We still have to create renderers for the <g> & <linearGradient> element, though the
     // subtree may be hidden - we only want the resource renderers to exist so they can be
     // referenced from somewhere else.
     if (style->display() == NONE)
-        return new (arena) RenderSVGHiddenContainer(this);
+        return new RenderSVGHiddenContainer(this);
 
-    return new (arena) RenderSVGTransformableContainer(this);
+    return new RenderSVGTransformableContainer(this);
 }
 
 bool SVGGElement::rendererIsNeeded(const NodeRenderingContext&)