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

sdk/lib/_internal/pub_generated/test/global/run/recompiles_if_sdk_is_out_of_date_test.dart

 // Copyright (c) 2014, 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 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   initConfig();
   integration('recompiles a script if the SDK version is out-of-date', () {
     servePackages((builder) {
-      builder.serve("foo", "1.0.0", contents: [
-        d.dir("bin", [
-          d.file("script.dart", "main(args) => print('ok');")
-        ])
-      ]);
+      builder.serve(
+          "foo",
+          "1.0.0",
+          contents: [
+              d.dir("bin", [d.file("script.dart", "main(args) => print('ok');")])]);
     });
 
     schedulePub(args: ["global", "activate", "foo"]);
 
-    d.dir(cachePath, [
-      d.dir('global_packages', [
-        d.dir('foo', [
-          d.dir('bin', [d.outOfDateSnapshot('script.dart.snapshot')])
-        ])
-      ])
-    ]).create();
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                'global_packages',
+                [
+                    d.dir(
+                        'foo',
+                        [d.dir('bin', [d.outOfDateSnapshot('script.dart.snapshot')])])])]).create();
 
     var pub = pubRun(global: true, args: ["foo:script"]);
     // In the real world this would just print "hello!", but since we collect
     // all output we see the precompilation messages as well.
     pub.stdout.expect("Precompiling executables...");
     pub.stdout.expect(consumeThrough("ok"));
     pub.shouldExit();
 
-    d.dir(cachePath, [
-      d.dir('global_packages', [
-        d.dir('foo', [
-          d.dir('bin', [
-            d.matcherFile('script.dart.snapshot', contains('ok'))
-          ])
-        ])
-      ])
-    ]).validate();
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                'global_packages',
+                [
+                    d.dir(
+                        'foo',
+                        [
+                            d.dir(
+                                'bin',
+                                [d.matcherFile('script.dart.snapshot', contains('ok'))])])])]).validate();
   });
 }