Clean up forward declarations in Source/core/html

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 19 matching lines @@
 #include "platform/FileChooser.h"
 
 namespace blink {
 
 class AXObject;
 class DragData;
 class ExceptionState;
 class FileList;
 class HTMLDataListElement;
 class HTMLImageLoader;
-class HTMLOptionElement;
 class InputType;
 class InputTypeView;
 class KURL;
 class ListAttributeTargetObserver;
 class RadioButtonGroupScope;
 struct DateTimeChooserParameters;
 
 class HTMLInputElement : public HTMLTextFormControlElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
@@ skipping 323 matching lines @@
     // 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.
     OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
     OwnPtrWillBeMember<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 };
 
 } // namespace blink
 
 #endif // HTMLInputElement_h