Add explicit destructors to DOM classes containing smart pointers to incomplete types

Source/core/html/HTMLOptionElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility, Inc.  All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 38 matching lines @@
 
 HTMLOptionElement::HTMLOptionElement(Document& document)
     : HTMLElement(optionTag, document)
     , m_disabled(false)
     , m_isSelected(false)
 {
     setHasCustomStyleCallbacks();
     ScriptWrappable::init(this);
 }
 
+HTMLOptionElement::~HTMLOptionElement()
+{
+}
+
 PassRefPtrWillBeRawPtr<HTMLOptionElement> HTMLOptionElement::create(Document& document)
 {
     RefPtrWillBeRawPtr<HTMLOptionElement> option = adoptRefWillBeNoop(new HTMLOptionElement(document));
     option->ensureUserAgentShadowRoot();
     return option.release();
 }
 
 PassRefPtrWillBeRawPtr<HTMLOptionElement> HTMLOptionElement::createForJSConstructor(Document& document, const String& data, const AtomicString& value,
     bool defaultSelected, bool selected, ExceptionState& exceptionState)
 {
@@ skipping 316 matching lines @@
 
 bool HTMLOptionElement::spatialNavigationFocused() const
 {
     HTMLSelectElement* select = ownerSelectElement();
     if (!select || !select->focused())
         return false;
     return select->spatialNavigationFocusedOption() == this;
 }
 
 } // namespace blink