Revert "Use native async/await support in pub."

sdk/lib/_internal/pub_generated/test/serve/gets_first_if_dependency_version_changed_test.dart

 // 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';
 import 'utils.dart';
 
 main() {
   initConfig();
-  integration("gets first if a dependency's version doesn't match the one in "
-      "the lock file", () {
-    d.dir("foo", [
-      d.libPubspec("foo", "0.0.1"),
-      d.libDir("foo")
-    ]).create();
+  integration(
+      "gets first if a dependency's version doesn't match the one in "
+          "the lock file",
+      () {
+    d.dir("foo", [d.libPubspec("foo", "0.0.1"), d.libDir("foo")]).create();
 
     d.appDir({
       "foo": {
         "path": "../foo",
         "version": "0.0.1"
       }
     }).create();
 
     pubGet();
 
     // Change the version in the pubspec and package.
     d.appDir({
       "foo": {
         "path": "../foo",
         "version": "0.0.2"
       }
     }).create();
 
-    d.dir("foo", [
-      d.libPubspec("foo", "0.0.2"),
-      d.libDir("foo")
-    ]).create();
+    d.dir("foo", [d.libPubspec("foo", "0.0.2"), d.libDir("foo")]).create();
 
     pubServe(shouldGetFirst: true);
     requestShouldSucceed("packages/foo/foo.dart", 'main() => "foo";');
     endPubServe();
   });
 }