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

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

Index: sdk/lib/_internal/pub_generated/test/validator/directory_test.dart
diff --git a/sdk/lib/_internal/pub/test/validator/directory_test.dart b/sdk/lib/_internal/pub_generated/test/validator/directory_test.dart
similarity index 75%
copy from sdk/lib/_internal/pub/test/validator/directory_test.dart
copy to sdk/lib/_internal/pub_generated/test/validator/directory_test.dart
index 02571acd7751252124ba444c768f7add95bdc6bd..fcfdb11cb3e8db5292e7186b55b3e045c9c545cf 100644
--- a/sdk/lib/_internal/pub/test/validator/directory_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/validator/directory_test.dart
@@ -12,7 +12,7 @@ import '../test_pub.dart';
 import 'utils.dart';
 
 Validator directory(Entrypoint entrypoint) =>
-  new DirectoryValidator(entrypoint);
+    new DirectoryValidator(entrypoint);
 
 main() {
   initConfig();
@@ -23,20 +23,24 @@ main() {
     integration('looks normal', () => expectNoValidationError(directory));
 
     integration('has a nested directory named "tools"', () {
-      d.dir(appPath, [
-        d.dir("foo", [d.dir("tools")])
-      ]).create();
+      d.dir(appPath, [d.dir("foo", [d.dir("tools")])]).create();
       expectNoValidationError(directory);
     });
   });
 
-  group('should consider a package invalid if it has a top-level directory '
-      'named', () {
+  group(
+      'should consider a package invalid if it has a top-level directory ' 'named',
+      () {
     setUp(d.validPackage.create);
 
     var names = [
-      "benchmarks", "docs", "examples", "sample", "samples", "tests", "tools"
-    ];
+        "benchmarks",
+        "docs",
+        "examples",
+        "sample",
+        "samples",
+        "tests",
+        "tools"];
 
     for (var name in names) {
       integration('"$name"', () {