Replace elementHasLegalLinkAttribute() helper with virtual function

Source/core/html/HTMLInputElement.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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. 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
@@ skipping 320 matching lines @@
 
     virtual bool canBeSuccessfulSubmitButton() const OVERRIDE FINAL;
 
     virtual void resetImpl() OVERRIDE FINAL;
     virtual bool supportsAutofocus() const OVERRIDE FINAL;
 
     virtual void* preDispatchEventHandler(Event*) OVERRIDE FINAL;
     virtual void postDispatchEventHandler(Event*, void* dataFromPreDispatch) OVERRIDE FINAL;
 
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE FINAL;
+    virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE FINAL;
     virtual bool isInRange() const OVERRIDE FINAL;
     virtual bool isOutOfRange() const OVERRIDE FINAL;
 
     bool isTextType() const;
     bool tooLong(const String&, NeedsToCheckDirtyFlag) const;
 
     virtual bool supportsPlaceholder() const OVERRIDE FINAL;
     virtual void updatePlaceholderText() OVERRIDE FINAL;
     virtual bool isEmptyValue() const OVERRIDE FINAL { return innerTextValue().isEmpty(); }
     virtual bool isEmptySuggestedValue() const OVERRIDE FINAL { return suggestedValue().isEmpty(); }
@@ skipping 44 matching lines @@
     RefPtr<InputTypeView> m_inputTypeView;
     // The ImageLoader must be owned by this element because the loader code assumes
     // that it lives as long as its owning element lives. If we move the loader into
     // the ImageInput object we may delete the loader while this element lives on.
     OwnPtr<HTMLImageLoader> m_imageLoader;
     OwnPtr<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 };
 
 } //namespace
 #endif