Invalidate DisplayItemClient when selection state changes

Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 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
@@ skipping 897 matching lines @@
         SelectionNone, // The object is not selected.
         SelectionStart, // The object either contains the start of a selection run or is the start of a run
         SelectionInside, // The object is fully encompassed by a selection run
         SelectionEnd, // The object either contains the end of a selection run or is the end of a run
         SelectionBoth // The object contains an entire run or is the sole selected object in that run
     };
 
     // The current selection state for an object.  For blocks, the state refers to the state of the leaf
     // descendants (as described above in the SelectionState enum declaration).
     SelectionState selectionState() const { return m_bitfields.selectionState(); }
-    virtual void setSelectionState(SelectionState state) { m_bitfields.setSelectionState(state); }
+    virtual void setSelectionState(SelectionState);
     inline void setSelectionStateIfNeeded(SelectionState);
     bool canUpdateSelectionOnRootLineBoxes() const;
 
     // A single rectangle that encompasses all of the selected objects within this object.  Used to determine the tightest
     // possible bounding box for the selection. The rect returned is in the coordinate space of the paint invalidation container's backing.
     virtual LayoutRect selectionRectForPaintInvalidation(const LayoutBoxModelObject* /*paintInvalidationContainer*/) const { return LayoutRect(); }
 
     // View coordinates means the coordinate space of |view()|.
     LayoutRect selectionRectInViewCoordinates() const;
 
@@ skipping 724 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h