Format all tests.

tests/language/abstract_object_method_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.
 
 import "package:expect/expect.dart";
 
 class A {
   noSuchMethod(_) {
     Expect.fail('Should not reach here');
   }
 }
 
 class B extends A {
   operator ==(other);
 }
 
-class C extends B {
-}
+class C extends B {}
 
 var a = [new C()];
 
 main() {
   C c = a[0];
   a.add(c);
   Expect.isTrue(c == a[1]);
 }