Row with only spanning cells have a height of 0.

Source/core/rendering/RenderTableSection.h

Index: Source/core/rendering/RenderTableSection.h
diff --git a/Source/core/rendering/RenderTableSection.h b/Source/core/rendering/RenderTableSection.h
index 2707d74ce1dbf91b934b00f5ef67a322d7db2266..9666a26775640d48437a15267c0f99b99fcf5efc 100644
--- a/Source/core/rendering/RenderTableSection.h
+++ b/Source/core/rendering/RenderTableSection.h
@@ -129,12 +129,14 @@ public:
         SpanningRowsHeight()
             : totalRowsHeight(0)
             , spanningCellHeightIgnoringBorderSpacing(0)
+            , rowsCountWithOnlySpanningCells(0)
         {
         }
 
         Vector<int> rowHeight;
         int totalRowsHeight;
         int spanningCellHeightIgnoringBorderSpacing;
+        int rowsCountWithOnlySpanningCells;

[Julien - ping for review, 2013/09/09 21:32:55]

Do we need to keep track of the count or just whether we have one?

[a.suchit, 2013/09/10 13:48:00]

just whether we have one. Changed it to bool type.

     };
 
     const BorderValue& borderAdjoiningTableStart() const
@@ -241,6 +243,10 @@ private:
 
     void ensureRows(unsigned);
 
+    unsigned hasRowOnlySpanningCells(unsigned);
+    unsigned calcRowHeightHavingOnlySpanningCells(unsigned);
+    void updateRowsHeightHavingOnlySpanningCells(RenderTableCell*, struct SpanningRowsHeight&);
+
     void populateSpanningRowsHeightFromCell(RenderTableCell*, struct SpanningRowsHeight&);
     void distributeExtraRowSpanHeightToPercentRows(RenderTableCell*, int, int&, Vector<int>&);
     void distributeExtraRowSpanHeightToAutoRows(RenderTableCell*, int, int&, Vector<int>&);