Fix table background painting

third_party/WebKit/Source/core/layout/LayoutTable.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, 2010 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 233 matching lines @@
     LayoutTableSection* header() const { return m_head; }
     LayoutTableSection* footer() const { return m_foot; }
     LayoutTableSection* firstBody() const { return m_firstBody; }
 
     // This function returns 0 if the table has no section.
     LayoutTableSection* topSection() const;
     LayoutTableSection* bottomSection() const;
 
     // This function returns 0 if the table has no non-empty sections.
     LayoutTableSection* topNonEmptySection() const;
+    LayoutTableSection* bottomNonEmptySection() const;
 
     unsigned lastEffectiveColumnIndex() const { return numEffectiveColumns() - 1; }
 
     void splitEffectiveColumn(unsigned index, unsigned firstSpan);
     void appendEffectiveColumn(unsigned span);
     unsigned numEffectiveColumns() const { return m_effectiveColumns.size(); }
     unsigned spanOfEffectiveColumn(unsigned effectiveColumnIndex) const { return m_effectiveColumns[effectiveColumnIndex].span; }
 
     unsigned absoluteColumnToEffectiveColumn(unsigned absoluteColumnIndex) const
     {
@@ skipping 64 matching lines @@
             return col ? col : colgroup;
         }
     };
     ColAndColGroup colElementAtAbsoluteColumn(unsigned absoluteColumnIndex) const
     {
         // The common case is to not have col/colgroup elements, make that case fast.
         if (!m_hasColElements)
             return ColAndColGroup();
         return slowColElementAtAbsoluteColumn(absoluteColumnIndex);
     }
+    static const unsigned npos = 0xFFFFFFFF;
+
+    unsigned colElementToAbsoluteColumn(const LayoutTableCol *) const;
 
     bool needsSectionRecalc() const { return m_needsSectionRecalc; }
     void setNeedsSectionRecalc()
     {
         if (documentBeingDestroyed())
             return;
         m_needsSectionRecalc = true;
         setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::TableChanged);
     }
 
@@ skipping 166 matching lines @@
     if (m_firstBody)
         return m_firstBody;
     return m_foot;
 }
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTable, isTable());
 
 } // namespace blink
 
 #endif // LayoutTable_h