Replace RenderArena with PartitionAlloc.

Source/core/html/RangeInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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 236 matching lines @@
 
     Document* document = element()->document();
     RefPtr<HTMLDivElement> track = HTMLDivElement::create(document);
     track->setPseudo(AtomicString("-webkit-slider-runnable-track", AtomicString::ConstructFromLiteral));
     track->appendChild(SliderThumbElement::create(document), IGNORE_EXCEPTION);
     RefPtr<HTMLElement> container = SliderContainerElement::create(document);
     container->appendChild(track.release(), IGNORE_EXCEPTION);
     element()->userAgentShadowRoot()->appendChild(container.release(), IGNORE_EXCEPTION);
 }
 
-RenderObject* RangeInputType::createRenderer(RenderArena* arena, RenderStyle*) const
+RenderObject* RangeInputType::createRenderer(RenderStyle*) const
 {
-    return new (arena) RenderSlider(element());
+    return new RenderSlider(element());
 }
 
 Decimal RangeInputType::parseToNumber(const String& src, const Decimal& defaultValue) const
 {
     return parseToDecimalForNumberType(src, defaultValue);
 }
 
 String RangeInputType::serialize(const Decimal& value) const
 {
     if (!value.isFinite())
@@ skipping 120 matching lines @@
             right = middle;
     }
     const Decimal closestLeft = middle ? m_tickMarkValues[middle - 1] : Decimal::infinity(Decimal::Negative);
     const Decimal closestRight = middle != m_tickMarkValues.size() ? m_tickMarkValues[middle] : Decimal::infinity(Decimal::Positive);
     if (closestRight - value < value - closestLeft)
         return closestRight;
     return closestLeft;
 }
 
 } // namespace WebCore