The Texans made some roster moves today that could help them as they approach the second half of the season.A The team today activated cornerback Dunta Robinson and put running back Chris Taylor on season-ending injured reserve. Robinson has been out since November, when a collision with a teammate tore the anterior cruciate ligament in his right knee and ripped his hamstring off the bone. He returned to practice Wednesday and could play Sunday against the Lions. Taylor has been out with a deep thigh bruise.