They made for successful but jealous partners, a pair of outsize talents and egos whose relationship crumbled more than a decade ago in a series of public spats. But as Rudolph W. Giuliani runs for president, he appears to be mending fences with William J. Bratton, his former police commissioner in New York and now the police chief of Los Angeles. On a campaign swing through Los Angeles on Monday, Mr. Giuliani met privately with Mr. Bratton, according to aides to both men. “The last time the two met was in 1996 in New York,” Lt. Paul Vernon, a Los...