[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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef LayoutQuote_h
 #define LayoutQuote_h
 
 #include "core/layout/LayoutInline.h"
 #include "core/style/QuotesData.h"
 
 namespace blink {
 
-class Document;
 class LayoutTextFragment;
+class PseudoElement;
 
 // LayoutQuote is the layout object associated with generated quotes
 // ("content: open-quote | close-quote | no-open-quote | no-close-quote").
 // http://www.w3.org/TR/CSS2/generate.html#quotes-insert
 //
 // This object is generated thus always anonymous.
 //
 // For performance reasons, LayoutQuotes form a doubly-linked list. See |m_next|
 // and |m_previous| below.
 class LayoutQuote final : public LayoutInline {
  public:
-  LayoutQuote(Document*, const QuoteType);
+  LayoutQuote(PseudoElement&, const QuoteType);
   ~LayoutQuote() override;
   void attachQuote();
 
   const char* name() const override { return "LayoutQuote"; }
 
  private:
   void detachQuote();
 
   void willBeDestroyed() override;
   bool isOfType(LayoutObjectType type) const override {
@@ skipping 27 matching lines @@
   LayoutQuote* m_next;
   LayoutQuote* m_previous;
 
   // 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;
 
+  // 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.
+  //
+  // Livedness is the same as m_node, so this is safe.

[rune, 2017/03/13 10:36:00]

"Lifetime is the same as for LayoutObject::m_node"

+  UntracedMember<PseudoElement> m_owningPseudo;
+
   // Cached text for this quote.
   String m_text;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutQuote, isQuote());
 
 }  // namespace blink
 
 #endif  // LayoutQuote_h