Format all tests.

tests/lib/mirrors/library_metatarget_test_annotations_lib.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 the combined use of metatargets and library tags.
 
 library annotations;
 
 class UsedOnlyOnLibrary {
   const UsedOnlyOnLibrary();
 }
+
 const usedOnlyOnLibrary = const UsedOnlyOnLibrary();
 
 class Reflectable {
   const Reflectable();
 }
+
 const Reflectable reflectable = const Reflectable();