Tribune Publishing, owner of the Los Angeles Times and other newspapers, said Thursday it won the bankruptcy auction for The Orange County Register and The Press-Enterprise in the face of a looming antitrust fight. After a marathon, contentious auction that started Wednesday morning and went deep into the evening, Tribune said its $56 million cash bid was the winner over Digital First Media, publisher of the Los Angeles Daily News and Long Beach-Press-Telegram, and an investor group headed by Rich Mirman, CEO of Freedom Communications, owner of the Register and Press-Enterprise.