Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart

Index: sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart b/sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart
index 568387b1de4a5ced3fa5376ca02d072595883628..b5194dd5296e1bcade0c257d7faeaf0aead4cf22 100644
--- a/sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/upgrade/hosted/upgrade_removed_constraints_test.dart
@@ -1,6 +1,12 @@
+// Copyright (c) 2012, 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("upgrades dependencies whose constraints have been removed", () {
@@ -14,20 +20,26 @@ main() {
       builder.serve("shared-dep", "1.0.0");
       builder.serve("shared-dep", "2.0.0");
     });
+
     d.appDir({
       "foo": "any",
       "bar": "any"
     }).create();
+
     pubUpgrade();
+
     d.packagesDir({
       "foo": "1.0.0",
       "bar": "1.0.0",
       "shared-dep": "1.0.0"
     }).validate();
+
     d.appDir({
       "foo": "any"
     }).create();
+
     pubUpgrade();
+
     d.packagesDir({
       "foo": "1.0.0",
       "bar": null,