Fix Border collapsing with colpsan / rowspan cells

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
@@ skipping 262 matching lines @@
   LayoutUnit RowOffsetFromRepeatingHeader() const {
     return row_offset_from_repeating_header_;
   }
 
   // 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 first_span);
   void AppendEffectiveColumn(unsigned span);
   unsigned NumEffectiveColumns() const { return effective_columns_.size(); }
   unsigned SpanOfEffectiveColumn(unsigned effective_column_index) const {
     return effective_columns_[effective_column_index].span;
@@ skipping 79 matching lines @@
   ColAndColGroup ColElementAtAbsoluteColumn(
       unsigned absolute_column_index) const {
     // The common case is to not have col/colgroup elements, make that case
     // fast.
     if (!has_col_elements_)
       return ColAndColGroup();
     return SlowColElementAtAbsoluteColumn(absolute_column_index);
   }
   bool HasColElements() const { return has_col_elements_; }
 
+  static const unsigned npos = 0xFFFFFFFF;
+  unsigned ColElementToAbsoluteColumn(const LayoutTableCol*) const;
+
   bool NeedsSectionRecalc() const { return needs_section_recalc_; }
   void SetNeedsSectionRecalc() {
     if (DocumentBeingDestroyed())
       return;
     // For all we know, sections may have been deleted at this point. Don't
     // keep pointers dangling around.
     head_ = nullptr;
     foot_ = nullptr;
     first_body_ = nullptr;
 
@@ skipping 225 matching lines @@
   if (first_body_)
     return first_body_;
   return foot_;
 }
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTable, IsTable());
 
 }  // namespace blink
 
 #endif  // LayoutTable_h