Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/core/html/HTMLSelectElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 1967 matching lines @@
     if (AXObjectCache* cache = document().existingAXObjectCache())
         cache->didShowMenuListPopup(menuList);
 }
 
 void HTMLSelectElement::hidePopup()
 {
     if (m_popup)
         m_popup->hide();
 }
 
-PopupMenu* HTMLSelectElement::popup() const
-{
-    return m_popup.get();
-}
-
 void HTMLSelectElement::didRecalcStyle(StyleRecalcChange change)
 {
     HTMLFormControlElementWithState::didRecalcStyle(change);
     if (popupIsVisible())
         m_popup->updateFromElement();
 }
 
 void HTMLSelectElement::detach(const AttachContext& context)
 {
     HTMLFormControlElementWithState::detach(context);
     if (m_popup)
         m_popup->disconnectClient();
     m_popupIsVisible = false;
     m_popup = nullptr;
 }
 
 void HTMLSelectElement::resetTypeAheadSessionForTesting()
 {
     m_typeAhead.resetSession();
 }
 
 } // namespace blink