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

sdk/lib/_internal/pub_generated/test/transformer/dart2js_transformer_before_another_transformer_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/dart2js_transformer_before_another_transformer_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/dart2js_transformer_before_another_transformer_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/dart2js_transformer_before_another_transformer_test.dart
similarity index 67%
copy from sdk/lib/_internal/pub/test/transformer/dart2js_transformer_before_another_transformer_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/dart2js_transformer_before_another_transformer_test.dart
index 30bb3744faba8fb3393041c88128590dc7e6d411..5be8957e92961cb9e03f238ab412fedb6e7a3485 100644
--- a/sdk/lib/_internal/pub/test/transformer/dart2js_transformer_before_another_transformer_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/dart2js_transformer_before_another_transformer_test.dart
@@ -13,21 +13,12 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("runs a dart2js transformer before a local transformer", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
-          "transformers": [
-            r"$dart2js",
-            "myapp/src/transformer"
-          ]
+          "transformers": [r"$dart2js", "myapp/src/transformer"]
         }),
-        d.dir("lib", [d.dir("src", [
-          d.file("transformer.dart", REWRITE_TRANSFORMER)
-        ])]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
+            d.dir("lib", [d.dir("src", [d.file("transformer.dart", REWRITE_TRANSFORMER)])]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);