pkg/docgen: test fixes

pkg/docgen/test/multi_library_test.dart

Index: pkg/docgen/test/multi_library_test.dart
diff --git a/pkg/docgen/test/multi_library_test.dart b/pkg/docgen/test/multi_library_test.dart
index b0c4eaca79c1cf906a243b45f7695c9e9eea9fdc..bf5e551bed6f35a01d01f4d42f8ca85e996c60ca 100644
--- a/pkg/docgen/test/multi_library_test.dart
+++ b/pkg/docgen/test/multi_library_test.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2014, 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.
+
 library single_library_test;
 
 import 'package:path/path.dart' as p;