Make sure getAttribute() / setAttribute() callers use AtomicStrings

Source/core/html/HTMLFormControlElement.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 28 matching lines @@
 // HTMLFormControlElement is the default implementation of FormAssociatedElement,
 // and form-associated element implementations should use HTMLFormControlElement
 // unless there is a special reason.
 class HTMLFormControlElement : public LabelableElement, public FormAssociatedElement {
 public:
     virtual ~HTMLFormControlElement();
 
     HTMLFormElement* form() const { return FormAssociatedElement::form(); }
 
     String formEnctype() const;
-    void setFormEnctype(const String&);
+    void setFormEnctype(const AtomicString&);
     String formMethod() const;
-    void setFormMethod(const String&);
+    void setFormMethod(const AtomicString&);
     bool formNoValidate() const;
 
     void ancestorDisabledStateWasChanged();
 
     void reset();
 
     virtual bool formControlValueMatchesRenderer() const { return m_valueMatchesRenderer; }
     virtual void setFormControlValueMatchesRenderer(bool b) { m_valueMatchesRenderer = b; }
 
     virtual bool wasChangedSinceLastFormControlChangeEvent() const;
@@ skipping 146 matching lines @@
 
 inline const HTMLFormControlElement& toHTMLFormControlElement(const FormAssociatedElement& control)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(control.isFormControlElement());
     return static_cast<const HTMLFormControlElement&>(control);
 }
 
 } // namespace
 
 #endif