Regenerate pub sources.

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

Index: sdk/lib/_internal/pub_generated/test/snapshot/upgrades_snapshot_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/snapshot/upgrades_snapshot_test.dart b/sdk/lib/_internal/pub_generated/test/snapshot/upgrades_snapshot_test.dart
index 0dda60355c14f6f862a5c759e084714f7684812d..bd8150f11b83dd42bf24f7a0fa4b4e2c409b5d47 100644
--- a/sdk/lib/_internal/pub_generated/test/snapshot/upgrades_snapshot_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/snapshot/upgrades_snapshot_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("upgrades a snapshot when its package is upgraded", () {
@@ -13,13 +20,17 @@ main() {
           contents: [
               d.dir("bin", [d.file("hello.dart", "void main() => print('hello!');")])]);
     });
+
     d.appDir({
       "foo": "any"
     }).create();
+
     pubGet(output: contains("Precompiled foo:hello."));
+
     d.dir(
         p.join(appPath, '.pub', 'bin', 'foo'),
         [d.matcherFile('hello.dart.snapshot', contains('hello!'))]).validate();
+
     servePackages((builder) {
       builder.serve(
           "foo",
@@ -27,10 +38,13 @@ main() {
           contents: [
               d.dir("bin", [d.file("hello.dart", "void main() => print('hello 2!');")])]);
     });
+
     pubUpgrade(output: contains("Precompiled foo:hello."));
+
     d.dir(
         p.join(appPath, '.pub', 'bin', 'foo'),
         [d.matcherFile('hello.dart.snapshot', contains('hello 2!'))]).validate();
+
     var process = pubRun(args: ['foo:hello']);
     process.stdout.expect("hello 2!");
     process.shouldExit();