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

sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart

Index: sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/supports_user_defined_declaring_transformers_test.dart b/sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart
similarity index 70%
copy from sdk/lib/_internal/pub/test/serve/supports_user_defined_declaring_transformers_test.dart
copy to sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart
index ccf5fa5db3394d2d32abe089f86a42a3651de856..f14da0d7c423713b76e5b999769b580a36105864 100644
--- a/sdk/lib/_internal/pub/test/serve/supports_user_defined_declaring_transformers_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/serve/supports_user_defined_declaring_transformers_test.dart
@@ -38,22 +38,18 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("supports a user-defined declaring transformer", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["myapp/src/lazy", "myapp/src/declaring"]
         }),
-        d.dir("lib", [d.dir("src", [
-          // Include a lazy transformer before the declaring transformer,
-          // because otherwise its behavior is indistinguishable from a normal
-          // transformer.
-          d.file("lazy.dart", LAZY_TRANSFORMER),
-          d.file("declaring.dart", DECLARING_TRANSFORMER)
-        ])]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
+            d.dir(
+                "lib",
+                [d.dir("src", [// Include a lazy transformer before the declaring transformer,
+            // because otherwise its behavior is indistinguishable from a normal
+            // transformer.
+            d.file("lazy.dart", LAZY_TRANSFORMER),
+                d.file("declaring.dart", DECLARING_TRANSFORMER)])]),
+                d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);
 
@@ -62,11 +58,10 @@ main() {
       server.stdout.expect('Build completed successfully');
 
       requestShouldSucceed("foo.final", "foo.out.final");
-      server.stdout.expect(emitsLines(
-          '[Info from LazyRewrite]:\n'
-          'Rewriting myapp|web/foo.txt.\n'
-          '[Info from DeclaringRewrite]:\n'
-          'Rewriting myapp|web/foo.out.'));
+      server.stdout.expect(
+          emitsLines(
+              '[Info from LazyRewrite]:\n' 'Rewriting myapp|web/foo.txt.\n'
+                  '[Info from DeclaringRewrite]:\n' 'Rewriting myapp|web/foo.out.'));
       endPubServe();
     });
   });