Remove AtomicStringImpl.

Source/core/html/HTMLFormElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 139 matching lines @@
     unsigned formElementIndex(FormAssociatedElement*);
 
     // Returns true if the submission should proceed.
     bool validateInteractively(Event*);
 
     // Validates each of the controls, and stores controls of which 'invalid'
     // event was not canceled to the specified vector. Returns true if there
     // are any invalid controls in this form.
     bool checkInvalidControlsAndCollectUnhandled(Vector<RefPtr<FormAssociatedElement> >*, HTMLFormControlElement::CheckValidityDispatchEvents = HTMLFormControlElement::CheckValidityDispatchEventsAllowed);
 
-    typedef HashMap<RefPtr<AtomicStringImpl>, RefPtr<Node> > AliasMap;
+    typedef HashMap<AtomicString, RefPtr<Node> > AliasMap;
 
     FormSubmission::Attributes m_attributes;
     OwnPtr<AliasMap> m_elementAliases;
 
     CheckedRadioButtons m_checkedRadioButtons;
 
     unsigned m_associatedElementsBeforeIndex;
     unsigned m_associatedElementsAfterIndex;
     Vector<FormAssociatedElement*> m_associatedElements;
     Vector<HTMLImageElement*> m_imageElements;
@@ skipping 14 matching lines @@
 
 inline HTMLFormElement* toHTMLFormElement(Node* node)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::formTag));
     return static_cast<HTMLFormElement*>(node);
 }
 
 } // namespace WebCore
 
 #endif // HTMLFormElement_h