Format all tests.

tests/language_strong/regress_r24720_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.
 
 // Regression test for r24720.
 
 import 'package:expect/expect.dart';
 
 class A<T> {}
 
 class B extends A<int> {
   B() : this.foo();
   B.foo();
 }
 
 main() {
   Expect.isTrue(new B() is B);
   Expect.isTrue(new B() is A<int>);
   Expect.isFalse(new B() is A<String>);
-}
+}