Set needsPaintPhaseDescendantBlockBackgrounds if a table has collapsed borders

third_party/WebKit/Source/core/paint/PaintInfo.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 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 55 matching lines @@
         : context(newContext)
         , phase(copyOtherFieldsFrom.phase)
         , m_cullRect(copyOtherFieldsFrom.m_cullRect)
         , m_paintContainer(copyOtherFieldsFrom.m_paintContainer)
         , m_paintFlags(copyOtherFieldsFrom.m_paintFlags)
         , m_globalPaintFlags(copyOtherFieldsFrom.m_globalPaintFlags)
     { }
 
     // Creates a PaintInfo for painting descendants. See comments about the paint phases
     // in PaintPhase.h for details.
-    // TODO(wangxianzhu): Actually use this method.
     PaintInfo forDescendants() const
     {
         PaintInfo result(*this);
         if (phase == PaintPhaseDescendantOutlinesOnly)
             result.phase = PaintPhaseOutline;
         else if (phase == PaintPhaseDescendantBlockBackgroundsOnly)
             result.phase = PaintPhaseBlockBackground;
         return result;
     }
 
@@ skipping 28 matching lines @@
     const GlobalPaintFlags m_globalPaintFlags;
 
     // TODO(chrishtr): temporary while we implement CullRect everywhere.
     friend class SVGPaintContext;
     friend class SVGShapePainter;
 };
 
 } // namespace blink
 
 #endif // PaintInfo_h