Replace RenderArena with PartitionAlloc

Source/core/html/shadow/SliderThumbElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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.
@@ skipping 203 matching lines @@
 {
     // Since the code to calculate position is in the RenderSliderThumb layout
     // path, we don't actually update the value here. Instead, we poke at the
     // renderer directly to trigger layout.
     if (renderer())
         renderer()->setNeedsLayout(true);
 }
 
 RenderObject* SliderThumbElement::createRenderer(RenderStyle*)
 {
-    return new (document()->renderArena()) RenderSliderThumb(this);
+    return new RenderSliderThumb(this);
 }
 
 bool SliderThumbElement::isDisabledFormControl() const
 {
     return hostInput() && hostInput()->isDisabledFormControl();
 }
 
 bool SliderThumbElement::matchesReadOnlyPseudoClass() const
 {
     return hostInput()->matchesReadOnlyPseudoClass();
@@ skipping 207 matching lines @@
 {
 }
 
 PassRefPtr<SliderContainerElement> SliderContainerElement::create(Document* document)
 {
     return adoptRef(new SliderContainerElement(document));
 }
 
 RenderObject* SliderContainerElement::createRenderer(RenderStyle*)
 {
-    return new (document()->renderArena()) RenderSliderContainer(this);
+    return new RenderSliderContainer(this);
 }
 
 const AtomicString& SliderContainerElement::shadowPseudoId() const
 {
     DEFINE_STATIC_LOCAL(const AtomicString, mediaSliderContainer, ("-webkit-media-slider-container", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(const AtomicString, sliderContainer, ("-webkit-slider-container", AtomicString::ConstructFromLiteral));
 
     if (!shadowHost()->hasTagName(inputTag))
         return sliderContainer;
 
     RenderStyle* sliderStyle = toHTMLInputElement(shadowHost())->renderer()->style();
     switch (sliderStyle->appearance()) {
     case MediaSliderPart:
     case MediaSliderThumbPart:
     case MediaVolumeSliderPart:
     case MediaVolumeSliderThumbPart:
     case MediaFullScreenVolumeSliderPart:
     case MediaFullScreenVolumeSliderThumbPart:
         return mediaSliderContainer;
     default:
         return sliderContainer;
     }
 }
 
 }