Re-land "Format all multitests"

tests/language/least_upper_bound_expansive_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Test least upper bound through type checking of conditionals.
 
 class N<T> {
   T get n => null;
 }
 
@@ skipping 80 matching lines @@
     // Is least upper bound N<N<...>> ?
     (z ? a : b).n.n; //# 11: static type warning
     // Is least upper bound N<C2<...>> ?
     (z ? a : b).n.c2; //# 12: static type warning
   }
 }
 
 void main() {
   testC1(false, null, null);
   testC2(false, null, null);
-}
+}