Table rows are incorrectly collapsed in case of hidden cells and rowspans.

Source/core/rendering/RenderTableSection.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, 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
@@ skipping 111 matching lines @@
         Length logicalHeight;
     };
 
     struct SpanningRowsHeight {
         WTF_MAKE_NONCOPYABLE(SpanningRowsHeight);
 
     public:
         SpanningRowsHeight()
             : totalRowsHeight(0)
             , spanningCellHeightIgnoringBorderSpacing(0)
-            , rowWithOnlySpanningCells(false)
+            , isAnyRowWithOnlySpanningCells(false)
         {
         }
 
         Vector<int> rowHeight;
         int totalRowsHeight;
         int spanningCellHeightIgnoringBorderSpacing;
-        bool rowWithOnlySpanningCells;
+        bool isAnyRowWithOnlySpanningCells;
     };
 
     const BorderValue& borderAdjoiningTableStart() const
     {
         if (hasSameDirectionAs(table()))
             return style()->borderStart();
 
         return style()->borderEnd();
     }
 
@@ skipping 156 matching lines @@
     // This map holds the collapsed border values for cells with collapsed borders.
     // It is held at RenderTableSection level to spare memory consumption by table cells.
     HashMap<pair<const RenderTableCell*, int>, CollapsedBorderValue > m_cellsCollapsedBorders;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTableSection, isTableSection());
 
 } // namespace WebCore
 
 #endif // RenderTableSection_h