Use scheduled_test for Pub tests.

utils/tests/pub/install/path/shared_dependency_symlink_test.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// 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.
+// BSD-style license that can be found in the LICENSE d.file.
 
 import 'dart:io';
 
 import '../../../../../pkg/pathos/lib/path.dart' as path;
 
+import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   // new File().fullPathSync() does not resolve through NTFS junction points,
   // so this feature does not work on Windows.
   if (Platform.operatingSystem == "windows") return;
 
   initConfig();
   integration("shared dependency with symlink", () {
-    dir("shared", [
-      libDir("shared"),
-      libPubspec("shared", "0.0.1")
-    ]).scheduleCreate();
+    d.dir("shared", [
+      d.libDir("shared"),
+      d.libPubspec("shared", "0.0.1")
+    ]).create();
 
-    dir("foo", [
-      libDir("foo"),
-      libPubspec("foo", "0.0.1", deps: [
+    d.dir("foo", [
+      d.libDir("foo"),
+      d.libPubspec("foo", "0.0.1", deps: [
         {"path": "../shared"}
       ])
-    ]).scheduleCreate();
+    ]).create();
 
-    dir("bar", [
-      libDir("bar"),
-      libPubspec("bar", "0.0.1", deps: [
+    d.dir("bar", [
+      d.libDir("bar"),
+      d.libPubspec("bar", "0.0.1", deps: [
         {"path": "../link/shared"}
       ])
-    ]).scheduleCreate();
+    ]).create();
 
-    dir(appPath, [
-      pubspec({
+    d.dir(appPath, [
+      d.pubspec({
         "name": "myapp",
         "dependencies": {
           "foo": {"path": "../foo"},
           "bar": {"path": "../bar"}
         }
       })
-    ]).scheduleCreate();
+    ]).create();
 
-    dir("link").scheduleCreate();
+    d.dir("link").create();
     scheduleSymlink("shared", path.join("link", "shared"));
 
     schedulePub(args: ["install"],
         output: new RegExp(r"Dependencies installed!$"));
 
-    dir(packagesPath, [
-      dir("foo", [file("foo.dart", 'main() => "foo";')]),
-      dir("bar", [file("bar.dart", 'main() => "bar";')]),
-      dir("shared", [file("shared.dart", 'main() => "shared";')])
-    ]).scheduleValidate();
+    d.dir(packagesPath, [
+      d.dir("foo", [d.file("foo.dart", 'main() => "foo";')]),
+      d.dir("bar", [d.file("bar.dart", 'main() => "bar";')]),
+      d.dir("shared", [d.file("shared.dart", 'main() => "shared";')])
+    ]).validate();
   });
 }