Call insertedInto or removedFrom before childrenChanged

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 330 matching lines @@
         if (m_isSelected)
             select->optionSelectionStateChanged(this, true);
         select->scrollToSelection();
     }
 
     return HTMLElement::insertedInto(insertionPoint);
 }
 
 void HTMLOptionElement::removedFrom(ContainerNode* insertionPoint)
 {
-    if (HTMLSelectElement* select = Traversal<HTMLSelectElement>::firstAncestorOrSelf(*insertionPoint))
+    if (HTMLSelectElement* select = Traversal<HTMLSelectElement>::firstAncestorOrSelf(*insertionPoint)) {
+        select->setRecalcListItems();
         select->optionRemoved(*this);
+    }
     HTMLElement::removedFrom(insertionPoint);
 }
 
 String HTMLOptionElement::collectOptionInnerText() const
 {
     StringBuilder text;
     for (Node* node = firstChild(); node; ) {
         if (node->isTextNode())
             text.append(node->nodeValue());
         // Text nodes inside script elements are not part of the option text.
@@ skipping 26 matching lines @@
 
 bool HTMLOptionElement::spatialNavigationFocused() const
 {
     HTMLSelectElement* select = ownerSelectElement();
     if (!select || !select->focused())
         return false;
     return select->spatialNavigationFocusedOption() == this;
 }
 
 } // namespace blink