Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart
index 71ef93536bd3d063aedc70b044f16c7c724dab53..9388b094db8309876ebd8fc5146cb89e617acd52 100644
--- a/sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/fails_to_load_a_non_existent_transform_test.dart
@@ -1,7 +1,13 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
+
 main() {
   initConfig();
   withBarbackVersions("any", () {
@@ -10,6 +16,7 @@ main() {
           "name": "myapp",
           "transformers": ["myapp/transform"]
         })]).create();
+
       var pub = startPubServe();
       pub.stderr.expect(
           'Transformer library "package:myapp/transform.dart" not found.');