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

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

Index: sdk/lib/_internal/pub_generated/test/validator/size_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/validator/size_test.dart b/sdk/lib/_internal/pub_generated/test/validator/size_test.dart
deleted file mode 100644
index 15a4b06561baeb32bcf7ca55f08c0e46abca6d73..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/validator/size_test.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-// 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 'dart:async';
-import 'dart:math' as math;
-
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../lib/src/validator/size.dart';
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-Function size(int size) {
-  return (entrypoint) => new SizeValidator(entrypoint, new Future.value(size));
-}
-
-main() {
-  initConfig();
-
-  setUp(d.validPackage.create);
-
-  integration('should consider a package valid if it is <= 10 MB', () {
-    expectNoValidationError(size(100));
-    expectNoValidationError(size(10 * math.pow(2, 20)));
-  });
-
-  integration('should consider a package invalid if it is more than 10 MB', () {
-    expectValidationError(size(10 * math.pow(2, 20) + 1));
-  });
-}