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

sdk/lib/_internal/pub_generated/test/dart2js/compiles_imported_generated_file_test.dart

Index: sdk/lib/_internal/pub_generated/test/dart2js/compiles_imported_generated_file_test.dart
diff --git a/sdk/lib/_internal/pub/test/dart2js/compiles_imported_generated_file_test.dart b/sdk/lib/_internal/pub_generated/test/dart2js/compiles_imported_generated_file_test.dart
similarity index 76%
copy from sdk/lib/_internal/pub/test/dart2js/compiles_imported_generated_file_test.dart
copy to sdk/lib/_internal/pub_generated/test/dart2js/compiles_imported_generated_file_test.dart
index 3b76645aa3265fedca00d04225d7a6465d41df24..d86c91ce66fc5cdea8a5c4458b5a93e0fab80428 100644
--- a/sdk/lib/_internal/pub/test/dart2js/compiles_imported_generated_file_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/dart2js/compiles_imported_generated_file_test.dart
@@ -12,26 +12,19 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("compiles a Dart file that imports a generated file to JS", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "version": "0.0.1",
           "transformers": ["myapp/transformer"]
         }),
-        d.dir("lib", [
-          d.file("transformer.dart", dartTransformer("munge"))
-        ]),
-        d.dir("web", [
-          d.file("main.dart", """
+            d.dir("lib", [d.file("transformer.dart", dartTransformer("munge"))]),
+            d.dir("web", [d.file("main.dart", """
 import "other.dart";
 void main() => print(TOKEN);
-"""),
-          d.file("other.dart", """
+"""), d.file("other.dart", """
 library other;
 const TOKEN = "before";
-""")
-        ])
-      ]).create();
+""")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);