Fix Border collapsing with colpsan / rowspan cells

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

Index: third_party/WebKit/Source/core/layout/LayoutTable.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutTable.h b/third_party/WebKit/Source/core/layout/LayoutTable.h
index 7d0ffa078a7cbd2a620cd2a3d3a513cbc42e709f..e4de4ee2fa755015d78f80d75e769ade94414a04 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTable.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTable.h
@@ -280,6 +280,7 @@ class CORE_EXPORT LayoutTable final : public LayoutBlock {
 
   // This function returns 0 if the table has no non-empty sections.
   LayoutTableSection* TopNonEmptySection() const;
+  LayoutTableSection* BottomNonEmptySection() const;
 
   unsigned LastEffectiveColumnIndex() const {
     return NumEffectiveColumns() - 1;
@@ -379,6 +380,9 @@ class CORE_EXPORT LayoutTable final : public LayoutBlock {
   }
   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())