HashTraits<RefPtr<P> >::PeekType should be raw pointer for better performance

Source/core/html/HTMLFormElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 645 matching lines @@
                 hasInvalidControls = true;
         }
     }
     return hasInvalidControls;
 }
 
 HTMLFormControlElement* HTMLFormElement::elementForAlias(const AtomicString& alias)
 {
     if (alias.isEmpty() || !m_elementAliases)
         return 0;
-    return m_elementAliases->get(alias.impl()).get();
+    return m_elementAliases->get(alias.impl());
 }
 
 void HTMLFormElement::addElementAlias(HTMLFormControlElement* element, const AtomicString& alias)
 {
     if (alias.isEmpty())
         return;
     if (!m_elementAliases)
         m_elementAliases = adoptPtr(new AliasMap);
     m_elementAliases->set(alias.impl(), element);
 }
@@ skipping 25 matching lines @@
     document()->formController()->restoreControlStateIn(*this);
 }
 
 void HTMLFormElement::copyNonAttributePropertiesFromElement(const Element& source)
 {
     m_wasDemoted = static_cast<const HTMLFormElement&>(source).m_wasDemoted;
     HTMLElement::copyNonAttributePropertiesFromElement(source);
 }
 
 } // namespace