Use scheduled_test for Pub tests.

utils/tests/pub/install/git/check_out_with_trailing_slash_test.dart

 // 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 'dart:io';
 
-import '../../../../../pkg/unittest/lib/unittest.dart';
+import '../../../../../pkg/scheduled_test/lib/scheduled_test.dart';
+
+import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   group("(regression)", () {
     integration('checks out a package from Git with a trailing slash', () {
       ensureGit();
 
-      git('foo.git', [
-        libDir('foo'),
-        libPubspec('foo', '1.0.0')
-      ]).scheduleCreate();
+      d.git('foo.git', [
+        d.libDir('foo'),
+        d.libPubspec('foo', '1.0.0')
+      ]).create();
 
-      appDir([{"git": "../foo.git/"}]).scheduleCreate();
+      d.appDir([{"git": "../foo.git/"}]).create();
 
       schedulePub(args: ['install'],
           output: new RegExp(r"Dependencies installed!$"));
 
-      dir(cachePath, [
-        dir('git', [
-          dir('cache', [gitPackageRepoCacheDir('foo')]),
-          gitPackageRevisionCacheDir('foo')
+      d.dir(cachePath, [
+        d.dir('git', [
+          d.dir('cache', [d.gitPackageRepoCacheDir('foo')]),
+          d.gitPackageRevisionCacheDir('foo')
         ])
-      ]).scheduleValidate();
+      ]).validate();
 
-      dir(packagesPath, [
-        dir('foo', [
-          file('foo.dart', 'main() => "foo";')
+      d.dir(packagesPath, [
+        d.dir('foo', [
+          d.file('foo.dart', 'main() => "foo";')
         ])
-      ]).scheduleValidate();
+      ]).validate();
     });
   });
 }