Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart

Index: sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart b/sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart
index acbf482f2db9f6c9b62ea4312eeb9b3d957cb786..b19f060023847e070e443895478e36e1821a0f19 100644
--- a/sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/snapshot/doesnt_resnapshot_when_a_dependency_is_unchanged_test.dart
@@ -1,8 +1,15 @@
+// Copyright (c) 2014, 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 'package:path/path.dart' as p;
 import 'package:scheduled_test/scheduled_test.dart';
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
+
 main() {
   initConfig();
   integration(
@@ -16,11 +23,15 @@ main() {
               d.dir("bin", [d.file("hello.dart", "void main() => print('hello!');")])]);
       builder.serve("bar", "1.2.3");
     });
+
     d.appDir({
       "foo": "1.2.3"
     }).create();
+
     pubGet(output: contains("Precompiled foo:hello."));
+
     pubUpgrade(output: isNot(contains("Precompiled foo:hello.")));
+
     d.dir(
         p.join(appPath, '.pub', 'bin'),
         [