Clean up forward declarations in Source/core/html

Source/core/html/HTMLFormControlsCollection.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2014 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 14 matching lines @@
 #define HTMLFormControlsCollection_h
 
 #include "core/html/FormAssociatedElement.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/RadioNodeList.h"
 
 namespace blink {
 
 class HTMLImageElement;
-class QualifiedName;
 
 // This class is just a big hack to find form elements even in malformed HTML elements.
 // The famous <table><tr><form><td> problem.
 
 class HTMLFormControlsCollection FINAL : public HTMLCollection {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<HTMLFormControlsCollection> create(ContainerNode&, CollectionType);
 
     virtual ~HTMLFormControlsCollection();
@@ skipping 17 matching lines @@
     virtual void invalidateCache(Document* oldDocument = 0) const OVERRIDE;
 
     mutable RawPtrWillBeMember<HTMLElement> m_cachedElement;
     mutable unsigned m_cachedElementOffsetInArray;
 };
 DEFINE_TYPE_CASTS(HTMLFormControlsCollection, LiveNodeListBase, collection, collection->type() == FormControls, collection.type() == FormControls);
 
 } // namespace blink
 
 #endif // HTMLFormControlsCollection_h