Oilpan: Avoid declaring a destructor for garbage collected ListHashSet.

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 56 matching lines @@
 }
 
 inline void FormControlState::append(const String& value)
 {
     m_type = TypeRestore;
     m_values.append(value);
 }
 
 typedef HashMap<AtomicString, OwnPtr<SavedFormState> > SavedFormStateMap;
 
-class DocumentState : public RefCountedWillBeGarbageCollectedFinalized<DocumentState> {
+class DocumentState FINAL : public RefCountedWillBeGarbageCollected<DocumentState> {
+    DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(DocumentState);
 public:
     static PassRefPtrWillBeRawPtr<DocumentState> create();
-    ~DocumentState();
     void trace(Visitor*);
 
     void addControl(HTMLFormControlElementWithState*);
     void removeControl(HTMLFormControlElementWithState*);
     Vector<String> toStateVector();
 
 private:
     typedef WillBeHeapListHashSet<RefPtrWillBeMember<HTMLFormControlElementWithState>, 64> FormElementListHashSet;
     FormElementListHashSet m_formControls;
 };
 
-class FormController : public NoBaseWillBeGarbageCollectedFinalized<FormController> {
+class FormController FINAL : public NoBaseWillBeGarbageCollectedFinalized<FormController> {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<FormController> create()
     {
         return adoptPtrWillBeNoop(new FormController);
     }
     ~FormController();
     void trace(Visitor*);
 
     RadioButtonGroupScope& radioButtonGroupScope() { return m_radioButtonGroupScope; }
@@ skipping 16 matching lines @@
     static void formStatesFromStateVector(const Vector<String>&, SavedFormStateMap&);
 
     RadioButtonGroupScope m_radioButtonGroupScope;
     RefPtrWillBeMember<DocumentState> m_documentState;
     SavedFormStateMap m_savedFormStateMap;
     OwnPtr<FormKeyGenerator> m_formKeyGenerator;
 };
 
 } // namespace WebCore
 #endif