Replace RenderArena with PartitionAlloc.

Source/core/svg/SVGAElement.cpp

Index: Source/core/svg/SVGAElement.cpp
diff --git a/Source/core/svg/SVGAElement.cpp b/Source/core/svg/SVGAElement.cpp
index 450320f4434647b90b0f97a48215e3d29ca20bb2..42262f5c4b6b115475b1ac6dbc02997ef83a1fc8 100644
--- a/Source/core/svg/SVGAElement.cpp
+++ b/Source/core/svg/SVGAElement.cpp
@@ -147,12 +147,12 @@ void SVGAElement::svgAttributeChanged(const QualifiedName& attrName)
     }
 }
 
-RenderObject* SVGAElement::createRenderer(RenderArena* arena, RenderStyle*)
+RenderObject* SVGAElement::createRenderer(RenderStyle*)
 {
     if (parentNode() && parentNode()->isSVGElement() && toSVGElement(parentNode())->isTextContent())
-        return new (arena) RenderSVGInline(this);
+        return new RenderSVGInline(this);
 
-    return new (arena) RenderSVGTransformableContainer(this);
+    return new RenderSVGTransformableContainer(this);
 }
 
 void SVGAElement::defaultEventHandler(Event* event)