Set ComputedStyle on Node and use that in buildOwnLayout()

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

 /*
  * 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, 2008, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * 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
@@ skipping 101 matching lines @@
     if (isHTMLSelectElement(*insertionPoint)) {
         if (!parentNode())
             toHTMLSelectElement(insertionPoint)->optGroupInsertedOrRemoved(*this);
     }
     HTMLElement::removedFrom(insertionPoint);
 }
 
 void HTMLOptGroupElement::updateNonComputedStyle()
 {
     m_style = originalStyleForLayoutObject();
-    if (layoutObject()) {
+    if (hasLayoutObject()) {
         if (HTMLSelectElement* select = ownerSelectElement())
             select->updateListOnLayoutObject();
     }
 }
 
 ComputedStyle* HTMLOptGroupElement::nonLayoutObjectComputedStyle() const
 {
     return m_style.get();
 }
 
@@ skipping 60 matching lines @@
     label.setTextContent(labelText);
     label.setAttribute(aria_labelAttr, AtomicString(labelText));
 }
 
 HTMLDivElement& HTMLOptGroupElement::optGroupLabelElement() const
 {
     return *toHTMLDivElement(userAgentShadowRoot()->getElementById(ShadowElementNames::optGroupLabel()));
 }
 
 } // namespace blink