List marker pseudo elements.

Source/core/layout/LayoutListItem.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Apple 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.
  *
@@ skipping 42 matching lines @@
 
     const String& markerText() const;
 
     void updateListMarkerNumbers();
 
     static void updateItemValuesForOrderedList(const HTMLOListElement*);
     static unsigned itemCountForOrderedList(const HTMLOListElement*);
 
     bool isEmpty() const;
 
+    void setMarker(LayoutListMarker* marker) { m_marker = marker; }
+    LayoutListMarker* marker() const { return m_marker; }
+
     virtual const char* name() const override { return "LayoutListItem"; }
 
 private:
     virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectListItem || LayoutBlockFlow::isOfType(type); }
 
     virtual void willBeDestroyed() override;
 
     virtual void insertedIntoTree() override;
     virtual void willBeRemovedFromTree() override;
 
+    virtual void subtreeDidChange() override;
+
     virtual void paint(const PaintInfo&, const LayoutPoint&) override;
 
     virtual void layout() override;
 
     // Returns true if we re-attached and updated the location of the marker.
     bool updateMarkerLocation();
     void updateMarkerLocationAndInvalidateWidth();
 
-    void positionListMarker();
+    void positionListMarker(LayoutListMarker*);
 
     virtual void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
     virtual void addOverflowFromChildren() override;
 
     inline int calcValue() const;
     void updateValueNow() const;
     void explicitValueChanged();
 
     int m_explicitValue;
-    LayoutListMarker* m_marker;
+    LayoutListMarker* m_marker; // Not owned when using listMarkerPseudoElements.
     mutable int m_value;
 
     bool m_hasExplicitValue : 1;
     mutable bool m_isValueUpToDate : 1;
     bool m_notInList : 1;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutListItem, isListItem());
 
 } // namespace blink
 
 #endif // LayoutListItem_h