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

sdk/lib/_internal/pub_generated/test/global/binstubs/outdated_snapshot_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 'dart:io';
 
 import 'package:path/path.dart' as p;
 import 'package:scheduled_test/scheduled_process.dart';
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../../../lib/src/io.dart';
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 import 'utils.dart';
 
 main() {
   initConfig();
   integration("a binstub runs 'pub global run' for an outdated snapshot", () {
     servePackages((builder) {
       builder.serve("foo", "1.0.0", pubspec: {
         "executables": {
           "foo-script": "script"
         }
-      }, contents: [
-        d.dir("bin", [
-          d.file("script.dart", "main(args) => print('ok \$args');")
-        ])
-      ]);
+      },
+          contents: [
+              d.dir("bin", [d.file("script.dart", "main(args) => print('ok \$args');")])]);
     });
 
     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 process = new ScheduledProcess.start(
         p.join(sandboxDir, cachePath, "bin", binStubName("foo-script")),
         ["arg1", "arg2"],
         environment: getEnvironment());
 
     process.stderr.expect(startsWith("Wrong script snapshot version"));
     process.stdout.expect(consumeThrough("ok [arg1, arg2]"));
     process.shouldExit();
 
-    d.dir(cachePath, [
-      d.dir('global_packages/foo/bin', [
-        d.binaryMatcherFile('script.dart.snapshot', isNot(equals(
-            readBinaryFile(testAssetPath('out-of-date.snapshot')))))
-      ])
-    ]).validate();
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                'global_packages/foo/bin',
+                [
+                    d.binaryMatcherFile(
+                        'script.dart.snapshot',
+                        isNot(
+                            equals(readBinaryFile(testAssetPath('out-of-date.snapshot')))))])]).validate();
   });
 }