Regenerate pub sources.

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

Index: sdk/lib/_internal/pub_generated/test/upgrade/report/shows_newer_available_versions_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/upgrade/report/shows_newer_available_versions_test.dart b/sdk/lib/_internal/pub_generated/test/upgrade/report/shows_newer_available_versions_test.dart
index c68442ed65ee2dd89a908e9d440eeff0ab061eea..99364476537ca6b6876d4d14f1924f4c9ea9cc3c 100644
--- a/sdk/lib/_internal/pub_generated/test/upgrade/report/shows_newer_available_versions_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/upgrade/report/shows_newer_available_versions_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("shows how many newer versions are available", () {
@@ -21,6 +27,8 @@ main() {
       builder.serve("one_newer_stable", "1.0.0");
       builder.serve("one_newer_stable", "1.0.1");
     });
+
+    // Constraint everything to the first version.
     d.appDir({
       "multiple_newer": "1.0.0",
       "multiple_newer_stable": "1.0.0",
@@ -29,6 +37,8 @@ main() {
       "one_newer_unstable": "1.0.0",
       "one_newer_stable": "1.0.0"
     }).create();
+
+    // Upgrade everything.
     pubUpgrade(output: new RegExp(r"""
 Resolving dependencies\.\.\..*
 . multiple_newer 1\.0\.0 \(1\.0\.1 available\)