Regenerate pub sources.

sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart

Index: sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart b/sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart
index cd9173e7a4bbb57c86a3598c0ea645cc5053ff39..ef8fd723aa2ec4edca2fddbc023516d1ca468339 100644
--- a/sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/build/allows_arbitrary_modes_test.dart
@@ -1,6 +1,12 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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';
+
 const TRANSFORMER = """
 import 'dart:async';
 
@@ -20,6 +26,7 @@ class ModeTransformer extends Transformer {
   }
 }
 """;
+
 main() {
   initConfig();
   withBarbackVersions("any", () {
@@ -30,8 +37,11 @@ main() {
         }),
             d.dir("lib", [d.dir("src", [d.file("transformer.dart", TRANSFORMER)])]),
             d.dir("web", [d.file("foo.txt", "foo")])]).create();
+
       createLockFile('myapp', pkg: ['barback']);
+
       schedulePub(args: ["build", "--mode", "depeche"]);
+
       d.dir(
           appPath,
           [d.dir('build', [d.dir('web', [d.file('foo.out', 'depeche')])])]).validate();