Format all tests.

tests/language_strong/methods_as_constants2_test.dart

 // Copyright (c) 2012, 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 that a function only used by compile-time constants is being
 // generated.
 
 import "package:expect/expect.dart";
 
 topLevelMethod() => 42;
 
 class A {
   final Function f;
   const A(this.f);
 }
+
 main() {
   Expect.equals(42, const A(topLevelMethod).f());
 }