By Dan Greenspan, The Associated Press LOS ANGELES — Justin Bieber got a taste of NHL hockey and the Staples Center glass Saturday, courtesy of NHL great Chris Pronger. Mark J. Terrill, The Associated PressSinger Justin Bieber, who is playing for Team Gretzky, is pushed into the glass by Chris Pronger of Team Lemieux during the first period of the NHL All-Star Celebrity Shootout at Staples Center, Saturday, Jan.