Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart

Index: sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart b/sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart
index 27b592912326dad00d65d96283100de6daef9252..b8f3e9a4327a510f920aee16a9c87e4c059e98ee 100644
--- a/sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/serve/404_page_test.dart
@@ -1,28 +1,45 @@
+// 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 'package:scheduled_test/scheduled_test.dart';
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
+
 main() {
   initConfig();
   setUp(() {
     d.dir(appPath, [d.appPubspec()]).create();
   });
+
   integration("the 404 page describes the missing asset", () {
     pubServe();
+
     scheduleRequest("packages/foo/missing.txt").then((response) {
       expect(response.statusCode, equals(404));
+
+      // Should mention the asset that can't be found.
       expect(response.body, contains("foo"));
       expect(response.body, contains("missing.txt"));
     });
+
     endPubServe();
   });
+
   integration("the 404 page describes the error", () {
     pubServe();
+
     scheduleRequest("packages").then((response) {
       expect(response.statusCode, equals(404));
+
+      // Should mention the asset that can't be found.
       expect(response.body, contains('"/packages"'));
     });
+
     endPubServe();
   });
 }