Regenerate pub sources.

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

+// Copyright (c) 2013, 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.
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
+
 main() {
   initConfig();
+
   integration("preserves .htaccess as a special case", () {
     d.dir(
         appPath,
         [
             d.appPubspec(),
             d.dir(
                 'web',
                 [d.file('.htaccess', 'fblthp'), d.file('.hidden', 'asdfgh')])]).create();
+
     schedulePub(
         args: ["build"],
         output: new RegExp(r'Built \d+ files? to "build".'));
+
     d.dir(
         appPath,
         [
             d.dir(
                 'build',
                 [
                     d.dir(
                         'web',
                         [d.file('.htaccess', 'fblthp'), d.nothing('.hidden')])])]).validate();
   });
 }