Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart

Index: sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart b/sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart
index 40e8a8433335f918cb0fca809649f47ec1a0e365..034f902e6e610a8c2f14d97bb33ebe54036e698c 100644
--- a/sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/upgrade/report/does_not_show_newer_versions_for_locked_packages_test.dart
@@ -1,6 +1,12 @@
+// Copyright (c) 2013, 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 pub_tests;
+
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
+
 main() {
   initConfig();
   integration(
@@ -15,15 +21,22 @@ main() {
       builder.serve("upgraded", "2.0.0");
       builder.serve("upgraded", "3.0.0-dev");
     });
+
+    // Constraint everything to the first version.
     d.appDir({
       "not_upgraded": "1.0.0",
       "upgraded": "1.0.0"
     }).create();
+
     pubGet();
+
+    // Loosen the constraints.
     d.appDir({
       "not_upgraded": "any",
       "upgraded": "any"
     }).create();
+
+    // Only upgrade "upgraded".
     pubUpgrade(args: ["upgraded"], output: new RegExp(r"""
 Resolving dependencies\.\.\..*
   not_upgraded 1\.0\.0