test rename overhaul: step 8 - language tests

tests/language/default_factory3_test.dart

 // Copyright (c) 2011, 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.
 
 
 interface A<T extends Foo> default _AImpl<T extends Foo> {
   const A();
 }
 
 class Moo extends Foo {}
 
 class Foo extends Bar {}
 
 class Bar {}
 
 class _AImpl<T extends Foo> implements A<T> {
    factory _AImpl(){}
 }
 
 main() {
   var result = new A<Moo>();
 }