Bob Chesney had them before hello. As the new UCLA football coach walked onto the court Saturday afternoon during a timeout in the Bruins’ basketball game against Indiana, the Pauley Pavilion crowd rose to serenade him with cheers. What he said made the decibel level soar. “I want you to support this team, understand what we’re building,” Chesney said, “and understand that we’re about to win a Big Ten championship.” As the fans roared, loving what they were hearing, Chesney looked around and