Replace RenderArena with PartitionAlloc.

Source/core/html/HTMLProgressElement.cpp

Index: Source/core/html/HTMLProgressElement.cpp
diff --git a/Source/core/html/HTMLProgressElement.cpp b/Source/core/html/HTMLProgressElement.cpp
index 17e78906f25101090b88ba51af49df7a0b13013c..575c61acee0e7c93a73595449fb273a213df8ca2 100644
--- a/Source/core/html/HTMLProgressElement.cpp
+++ b/Source/core/html/HTMLProgressElement.cpp
@@ -57,12 +57,12 @@ PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(const QualifiedName&
     return progress.release();
 }
 
-RenderObject* HTMLProgressElement::createRenderer(RenderArena* arena, RenderStyle* style)
+RenderObject* HTMLProgressElement::createRenderer(RenderStyle* style)
 {
     if (!style->hasAppearance() || hasAuthorShadowRoot())
         return RenderObject::createObject(this, style);
 
-    return new (arena) RenderProgress(this);
+    return new RenderProgress(this);
 }
 
 bool HTMLProgressElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const