Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_test.dart

Index: sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_test.dart b/sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_test.dart
index acc2de646e13f0dcd9682b4c1e0cb1bd3df7eb83..5245f868ef15dfba867f2a4604886fbc188c6f72 100644
--- a/sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/dart2js/passes_along_environment_constants_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.
+
 import 'package:scheduled_test/scheduled_test.dart';
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
+
 main() {
   initConfig();
   integration("passes along environment constants", () {
@@ -21,6 +27,7 @@ void main() {
   }
 }
 """)])]).create();
+
     pubServe();
     requestShouldSucceed("main.dart.js", contains("hello"));
     endPubServe();