[css-display] Support display: contents pseudo-elements.

third_party/WebKit/Source/core/layout/LayoutQuote.h

 /*
  * Copyright (C) 2011 Nokia Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 65 matching lines @@
   int m_depth;
 
   // The next and previous LayoutQuote in layout tree order.
   // LayoutQuotes are linked together by this doubly-linked list.
   // Those are used to compute |m_depth| in an efficient manner.
   LayoutQuote* m_next;
   LayoutQuote* m_previous;
 
   // The pseudo-element that owns us.
   //
+  // TODO(ecobos@igalia.com): This is also in m_node, should we make that
+  // protected instead of private? Seems easy to misuse.
+  //
   // Lifetime is the same as LayoutObject::m_node, so this is safe.
   UntracedMember<PseudoElement> m_owningPseudo;
 
   // This tracks whether this LayoutQuote was inserted into the layout tree
   // and its position in the linked list is correct (m_next and m_previous).
   // It's used for both performance (avoid unneeded tree walks to find the
   // previous and next quotes) and conformance (|m_depth| relies on an
   // up-to-date linked list positions).
   bool m_attached;
 
   // Cached text for this quote.
   String m_text;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutQuote, isQuote());
 
 }  // namespace blink
 
 #endif  // LayoutQuote_h