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

sdk/lib/_internal/pub_generated/test/transformer/a_transformer_rejects_its_config_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/a_transformer_rejects_its_config_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/a_transformer_rejects_its_config_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/a_transformer_rejects_its_config_test.dart
similarity index 53%
copy from sdk/lib/_internal/pub/test/transformer/a_transformer_rejects_its_config_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/a_transformer_rejects_its_config_test.dart
index caa0c95be8af829030039542c4c5b043d000405a..0ee0f1f501625426add38577c698c10ed561884f 100644
--- a/sdk/lib/_internal/pub/test/transformer/a_transformer_rejects_its_config_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/a_transformer_rejects_its_config_test.dart
@@ -29,23 +29,28 @@ main() {
   initConfig();
 
   withBarbackVersions("any", () {
-     integration("a transformer can reject is configuration", () {
-       d.dir(appPath, [
-         d.pubspec({
-           "name": "myapp",
-           "transformers": [{"myapp/src/transformer": {'foo': 'bar'}}]
-         }),
-         d.dir("lib", [d.dir("src", [
-           d.file("transformer.dart", REJECT_CONFIG_TRANSFORMER)
-         ])])
-       ]).create();
-
-       createLockFile('myapp', pkg: ['barback']);
-
-       var pub = startPubServe();
-       pub.stderr.expect(endsWith('Error loading transformer: I hate these '
-           'settings!'));
-       pub.shouldExit(1);
-     });
+    integration("a transformer can reject is configuration", () {
+      d.dir(appPath, [d.pubspec({
+          "name": "myapp",
+          "transformers": [{
+              "myapp/src/transformer": {
+                'foo': 'bar'
+              }
+            }]
+        }),
+            d.dir(
+                "lib",
+                [
+                    d.dir(
+                        "src",
+                        [d.file("transformer.dart", REJECT_CONFIG_TRANSFORMER)])])]).create();
+
+      createLockFile('myapp', pkg: ['barback']);
+
+      var pub = startPubServe();
+      pub.stderr.expect(
+          endsWith('Error loading transformer: I hate these ' 'settings!'));
+      pub.shouldExit(1);
+    });
   });
-}
+}