How confident are the Warriors in their scouting department? They firmly believe that they will draft a player with the No. 28 pick in Thursday's NBA draft — a spot often used on prospects who spend most of their careers overseas — who can contribute immediately. With its highest pick since it took Harrison Barnes seventh overall in 2012, Golden State will probably take a rotation-ready wing. Now, with three days until the draft, The Chronicle is looking at whom the top online mock drafts project the Warriors to select at No. 28: ESPN Insider, Kevin Pelton　 28. Gary Trent, Jr.