The SL and Bangladesh looks to be heading into another draw as SL are still batting and have only lost 6 wickets in two days of play. If they can get to say 550+ then they could try and bowl Bangladesh out twice without batting again but it doesn't look like this pitch is offering much to the bowlers so SL might also have a hard time trying to bowl Bangladesh out twice.
It is a smart move by the Sri Lankan cricket board to create flat wickets so that none of the bowlers will get any undue advantage and they might be afraid of the Bangladesh spinners who could extract the pitch if that favors the spinners and knowing those they might have gone with a flat pitch that will not assist anyone and so is the reason we are seeing a run fest in the last match as well as this match and closing in to another boring draw.