Format all tests.

tests/language/default_factory3_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.
 
 // Check possibly still unresolved upper bounds of default factory class.
 
-
 abstract class A<T extends Foo> {
   factory A() = _AImpl<T>;
 }
 
 class Moo extends Foo {}
 
 class Foo extends Bar {}
 
 class Bar {}
 
 class _AImpl<T extends Foo> implements A<T> {
-   factory _AImpl(){}
+  factory _AImpl() {}
 }
 
 main() {
   var result = new A<Moo>();
 }