Revert "Parts must start with 'part of'" and "Attempt to fix VM build"

dart/pkg/dartdoc/lib/mirrors_util.dart

Index: dart/pkg/dartdoc/lib/mirrors_util.dart
diff --git a/dart/pkg/dartdoc/lib/mirrors_util.dart b/dart/pkg/dartdoc/lib/mirrors_util.dart
index 705bcbadf5a46737fffc524b84618d643fe137f5..bbd6b49a4a4c4d348cdb6c5577ca43cf12073320 100644
--- a/dart/pkg/dartdoc/lib/mirrors_util.dart
+++ b/dart/pkg/dartdoc/lib/mirrors_util.dart
@@ -2,11 +2,11 @@
 // 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.
 
-library mirrors_util;
+#library('mirrors.util');
 
 // TODO(rnystrom): Use "package:" URL (#4968).
-import 'mirrors.dart';
-import '../../../lib/compiler/implementation/util/characters.dart';
+#import('mirrors.dart');
+#import('../../../lib/compiler/implementation/util/characters.dart');
 
 //------------------------------------------------------------------------------
 // Utility functions for using the Mirror API