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

sdk/lib/_internal/pub_generated/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart

Index: sdk/lib/_internal/pub_generated/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
diff --git a/sdk/lib/_internal/pub/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart b/sdk/lib/_internal/pub_generated/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
similarity index 74%
copy from sdk/lib/_internal/pub/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
copy to sdk/lib/_internal/pub_generated/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
index 25ca1ca28938775a88275f405a8ed662cf272e6f..f613ebc392896325d8bad712f94bcaa457fbcce0 100644
--- a/sdk/lib/_internal/pub/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/oauth2/with_a_server_rejected_refresh_token_authenticates_again_test.dart
@@ -16,15 +16,18 @@ import 'utils.dart';
 main() {
   initConfig();
   // Regression test for issue 8849.
-  integration('with a server-rejected refresh token, authenticates again and '
-      'saves credentials.json', () {
+  integration(
+      'with a server-rejected refresh token, authenticates again and '
+          'saves credentials.json',
+      () {
     d.validPackage.create();
 
     var server = new ScheduledServer();
-    d.credentialsFile(server, 'access token',
+    d.credentialsFile(
+        server,
+        'access token',
         refreshToken: 'bad refresh token',
-        expiration: new DateTime.now().subtract(new Duration(hours: 1)))
-        .create();
+        expiration: new DateTime.now().subtract(new Duration(hours: 1))).create();
 
     var pub = startPublish(server);
 
@@ -32,9 +35,11 @@ main() {
 
     server.handle('POST', '/token', (request) {
       return drainStream(request.read()).then((_) {
-        return new shelf.Response(400,
-            body: JSON.encode({"error": "invalid_request"}),
-            headers: {'content-type': 'application/json'});
+        return new shelf.Response(400, body: JSON.encode({
+          "error": "invalid_request"
+        }), headers: {
+          'content-type': 'application/json'
+        });
       });
     });
 
@@ -42,7 +47,8 @@ main() {
     authorizePub(pub, server, 'new access token');
 
     server.handle('GET', '/api/packages/versions/new', (request) {
-      expect(request.headers,
+      expect(
+          request.headers,
           containsPair('authorization', 'Bearer new access token'));
 
       return new shelf.Response(200);
@@ -50,4 +56,4 @@ main() {
 
     pub.kill();
   });
-}
+}