Fix LayoutBox::topLeftLocation for table rows and table cells

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

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2013 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
@@ skipping 270 matching lines @@
     CollapsedBorderValue afterBorder;
   };
   const CollapsedBorderValues* collapsedBorderValues() const {
     return m_collapsedBorderValues.get();
   }
 
   LayoutRect debugRect() const override;
 
   void adjustChildDebugRect(LayoutRect&) const override;
 
+  // A table cell's location is relative to its containing section.
+  LayoutBox* locationContainer() const override { return section(); }
+
  protected:
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
   void computePreferredLogicalWidths() override;
 
   void addLayerHitTestRects(LayerHitTestRects&,
                             const PaintLayer* currentCompositedLayer,
                             const LayoutPoint& layerOffset,
                             const LayoutRect& containerRect) const override;
 
  private:
@@ skipping 105 matching lines @@
   return toLayoutTableCell(firstChild());
 }
 
 inline LayoutTableCell* LayoutTableRow::lastCell() const {
   return toLayoutTableCell(lastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableCell_h