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

sdk/lib/_internal/pub_generated/test/validator/pubspec_field_test.dart

 // Copyright (c) 2013, 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_test.dart';
 
 import '../../lib/src/entrypoint.dart';
 import '../../lib/src/validator.dart';
 import '../../lib/src/validator/pubspec_field.dart';
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
 
 Validator pubspecField(Entrypoint entrypoint) =>
-  new PubspecFieldValidator(entrypoint);
+    new PubspecFieldValidator(entrypoint);
 
 main() {
   initConfig();
 
   group('should consider a package valid if it', () {
     setUp(d.validPackage.create);
 
     integration('looks normal', () => expectNoValidationError(pubspecField));
 
     integration('has "authors" instead of "author"', () {
@@ skipping 92 matching lines @@
       pkg["author"] = "Natalie Weizenbaum";
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationWarning(pubspecField);
     });
 
     integration('has one of several authors without an email', () {
       var pkg = packageMap("test_pkg", "1.0.0");
       pkg.remove("author");
       pkg["authors"] = [
-        "Bob Nystrom <rnystrom@google.com>",
-        "Natalie Weizenbaum",
-        "John Messerly <jmesserly@google.com>"
-      ];
+          "Bob Nystrom <rnystrom@google.com>",
+          "Natalie Weizenbaum",
+          "John Messerly <jmesserly@google.com>"];
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationWarning(pubspecField);
     });
 
     integration('has a single author without a name', () {
       var pkg = packageMap("test_pkg", "1.0.0");
       pkg["author"] = "<nweiz@google.com>";
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationWarning(pubspecField);
     });
 
     integration('has one of several authors without a name', () {
       var pkg = packageMap("test_pkg", "1.0.0");
       pkg.remove("author");
       pkg["authors"] = [
-        "Bob Nystrom <rnystrom@google.com>",
-        "<nweiz@google.com>",
-        "John Messerly <jmesserly@google.com>"
-      ];
+          "Bob Nystrom <rnystrom@google.com>",
+          "<nweiz@google.com>",
+          "John Messerly <jmesserly@google.com>"];
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationWarning(pubspecField);
     });
 
     integration('has a non-HTTP homepage URL', () {
       var pkg = packageMap("test_pkg", "1.0.0");
       pkg["homepage"] = "file:///foo/bar";
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationError(pubspecField);
     });
 
     integration('has a non-HTTP documentation URL', () {
       var pkg = packageMap("test_pkg", "1.0.0");
       pkg["documentation"] = "file:///foo/bar";
       d.dir(appPath, [d.pubspec(pkg)]).create();
 
       expectValidationError(pubspecField);
     });
   });
 }