This bug is about using the direction of table section and table row same as the table to simplify code. This is not necessarily about broken functionality thought there might be. This bug is different from  bug 727173  which is about that the direction of table section and table row should not affect order of cells.

If we fix this bug, we'll always use the same logical directions (before, after, start, end) in LayoutTable, LayoutTableCol, LayoutTableSection, LayoutTableRow.