Clean up forward declarations in Source/core/html

Source/core/html/forms/FormController.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010, 2011, 2012 Google 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 13 matching lines @@
 
 #include "core/html/forms/RadioButtonGroupScope.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicStringHash.h"
 
 namespace blink {
 
-class FormAssociatedElement;
 class FormKeyGenerator;
 class HTMLFormControlElementWithState;
 class HTMLFormElement;
 class SavedFormState;
 
 class FormControlState {
 public:
     FormControlState() : m_type(TypeSkip) { }
     explicit FormControlState(const String& value) : m_type(TypeRestore) { m_values.append(value); }
     static FormControlState deserialize(const Vector<String>& stateVector, size_t& index);
@@ skipping 74 matching lines @@
     static void formStatesFromStateVector(const Vector<String>&, SavedFormStateMap&);
 
     RadioButtonGroupScope m_radioButtonGroupScope;
     RefPtrWillBeMember<DocumentState> m_documentState;
     SavedFormStateMap m_savedFormStateMap;
     OwnPtrWillBeMember<FormKeyGenerator> m_formKeyGenerator;
 };
 
 } // namespace blink
 #endif