Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart

Index: sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart b/sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart
index 76de12914bd5fee6059178d5259b6e5da7756e40..bc40b99008906f130cf56f22a033cbc12875b623 100644
--- a/sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/get/git/check_out_branch_test.dart
@@ -1,17 +1,26 @@
+// 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('checks out a package at a specific branch from Git', () {
     ensureGit();
+
     var repo =
         d.git('foo.git', [d.libDir('foo', 'foo 1'), d.libPubspec('foo', '1.0.0')]);
     repo.create();
     repo.runGit(["branch", "old"]);
+
     d.git(
         'foo.git',
         [d.libDir('foo', 'foo 2'), d.libPubspec('foo', '1.0.0')]).commit();
+
     d.appDir({
       "foo": {
         "git": {
@@ -20,7 +29,9 @@ main() {
         }
       }
     }).create();
+
     pubGet();
+
     d.dir(
         packagesPath,
         [d.dir('foo', [d.file('foo.dart', 'main() => "foo 1";')])]).validate();