Replace RenderArena with PartitionAlloc.

Source/core/html/shadow/PickerIndicatorElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 46 matching lines @@
     element->setAttribute(idAttr, ShadowElementNames::pickerIndicator());
     return element.release();
 }
 
 PickerIndicatorElement::~PickerIndicatorElement()
 {
     closePopup();
     ASSERT(!m_chooser);
 }
 
-RenderObject* PickerIndicatorElement::createRenderer(RenderArena* arena, RenderStyle*)
+RenderObject* PickerIndicatorElement::createRenderer(RenderStyle*)
 {
-    return new (arena) RenderDetailsMarker(this);
+    return new RenderDetailsMarker(this);
 }
 
 void PickerIndicatorElement::defaultEventHandler(Event* event)
 {
     if (!renderer())
         return;
     if (!m_pickerIndicatorOwner || m_pickerIndicatorOwner->isPickerIndicatorOwnerDisabledOrReadOnly())
         return;
 
     if (event->type() == eventNames().clickEvent) {
@@ skipping 53 matching lines @@
 }
 
 bool PickerIndicatorElement::isPickerIndicatorElement() const
 {
     return true;
 }
 
 }
 
 #endif