Chief Justice John Roberts and his colleagues on the Supreme Court get a quick start in the new year. They are scheduled on Jan. 10 to hear arguments in two class-action cases, Sears v. Butler and Whirlpool v. Glazer. Both concern Whirlpool clothes washers sold by Sears, and both come to the high court from lower circuits that essentially thumbed their noses at the nation’s most senior justices.