Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart

Index: sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart b/sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart
index c15b8651a12d118e4424e4e93973ab1bd3f7402b..a42373726ddc0cfe084248013ff77b6f969b32c2 100644
--- a/sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/serve/watch_modified_file_test.dart
@@ -1,16 +1,25 @@
+// 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 'utils.dart';
+
 main() {
   initConfig();
   integration("watches modifications to files", () {
     d.dir(
         appPath,
         [d.appPubspec(), d.dir("web", [d.file("index.html", "before")])]).create();
+
     pubServe();
     requestShouldSucceed("index.html", "before");
+
     d.dir(appPath, [d.dir("web", [d.file("index.html", "after")])]).create();
+
     waitForBuildSuccess();
     requestShouldSucceed("index.html", "after");
     endPubServe();