Fix table background painting

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 a5d51fba85b594f567bca8ec50a642912a4c7f21..76995b392726a1bb3d406eeba8b614f98a1a4941 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTable.h
+++ b/third_party/WebKit/Source/core/layout/LayoutTable.h
@@ -251,6 +251,7 @@ public:
 
     // This function returns 0 if the table has no non-empty sections.
     LayoutTableSection* topNonEmptySection() const;
+    LayoutTableSection* bottomNonEmptySection() const;
 
     unsigned lastEffectiveColumnIndex() const { return numEffectiveColumns() - 1; }
 
@@ -335,6 +336,9 @@ public:
             return ColAndColGroup();
         return slowColElementAtAbsoluteColumn(absoluteColumnIndex);
     }
+    static const unsigned npos = 0xFFFFFFFF;
+
+    unsigned colElementToAbsoluteColumn(const LayoutTableCol *) const;
 
     bool needsSectionRecalc() const { return m_needsSectionRecalc; }
     void setNeedsSectionRecalc()