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

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

Index: sdk/lib/_internal/pub_generated/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
diff --git a/sdk/lib/_internal/pub/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart b/sdk/lib/_internal/pub_generated/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
similarity index 76%
copy from sdk/lib/_internal/pub/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
copy to sdk/lib/_internal/pub_generated/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
index b67b147d0597cd83d260d1fe0f539c8cdbbead07..54dadb20130e2a6c73f262ea52f381280f2db438 100644
--- a/sdk/lib/_internal/pub/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/dart2js/does_not_compile_until_its_output_is_requested_test.dart
@@ -11,24 +11,20 @@ import '../serve/utils.dart';
 main() {
   initConfig();
   integration("does not compile until its output is requested", () {
-    d.dir(appPath, [
-      d.pubspec({
+    d.dir(appPath, [d.pubspec({
         "name": "myapp",
         "version": "0.0.1",
       }),
-      d.dir("web", [
-        d.file("syntax-error.dart", "syntax error")
-      ])
-    ]).create();
+          d.dir("web", [d.file("syntax-error.dart", "syntax error")])]).create();
 
     var server = pubServe();
     server.stdout.expect("Build completed successfully");
 
     // Once we request the output, it should start compiling and fail.
     requestShould404("syntax-error.dart.js");
-    server.stdout.expect(emitsLines(
-        "[Info from Dart2JS]:\n"
-        "Compiling myapp|web/syntax-error.dart..."));
+    server.stdout.expect(
+        emitsLines(
+            "[Info from Dart2JS]:\n" "Compiling myapp|web/syntax-error.dart..."));
     server.stdout.expect(consumeThrough("Build completed with 1 errors."));
     endPubServe();
   });