Option Groups with display: none should not show the children option elements

Source/web/PopupListBox.cpp

 /*
  * Copyright (c) 2011, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 695 matching lines @@
             type = PopupItem::TypeSeparator;
         else if (m_popupClient->itemIsLabel(i))
             type = PopupItem::TypeGroup;
         else
             type = PopupItem::TypeOption;
         m_items.append(new PopupItem(m_popupClient->itemText(i), type));
         m_items[i]->enabled = isSelectableItem(i);
         PopupMenuStyle style = m_popupClient->itemStyle(i);
         m_items[i]->textDirection = style.textDirection();
         m_items[i]->hasTextDirectionOverride = style.hasTextDirectionOverride();
+        m_items[i]->displayNone = style.isDisplayNone();
     }
 
     m_selectedIndex = m_popupClient->selectedIndex();
     setOriginalIndex(m_selectedIndex);
 
     layout();
 }
 
 void PopupListBox::setMaxWidthAndLayout(int maxWidth)
 {
@@ skipping 98 matching lines @@
 {
     return numItems() && IntRect(0, 0, width(), height()).contains(point);
 }
 
 int PopupListBox::popupContentHeight() const
 {
     return height();
 }
 
 } // namespace blink