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

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

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS d.file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library pub_tests;
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import '../serve/utils.dart';
 
@@ skipping 11 matching lines @@
       // should ever have their code transformed by foo/second.
       //
       // The myapp package also has a reference to foo/first. This reference has
       // a different configuration than foo's, which means that if it's loaded
       // in a separate isolate, it will be loaded after all of foo's
       // transformers have run. This means that foo/first.dart will have been
       // transformed by foo/first and foo/second, causing it to have different
       // code than the previous instance. This tests asserts that that doesn't
       // happen.
 
-      d.dir("foo", [
-        d.pubspec({
+      d.dir("foo", [d.pubspec({
           "name": "foo",
           "version": "1.0.0",
-          "transformers": [
-            {"foo/first": {"addition": " in foo"}},
-            "foo/second"
-          ]
+          "transformers": [{
+              "foo/first": {
+                "addition": " in foo"
+              }
+            }, "foo/second"]
         }),
-        d.dir("lib", [
-          d.file("first.dart", dartTransformer('foo/first')),
-          d.file("second.dart", dartTransformer('foo/second'))
-        ])
-      ]).create();
+            d.dir(
+                "lib",
+                [
+                    d.file("first.dart", dartTransformer('foo/first')),
+                    d.file("second.dart", dartTransformer('foo/second'))])]).create();
 
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
-          "transformers": [
-            {
+          "transformers": [{
               "foo/first": {
                 "addition": " in myapp",
                 "\$include": "web/first.dart"
               }
-            },
-            {"foo/second": {"\$include": "web/second.dart"}}
-          ],
-          "dependencies": {'foo': {'path': '../foo'}}
+            }, {
+              "foo/second": {
+                "\$include": "web/second.dart"
+              }
+            }],
+          "dependencies": {
+            'foo': {
+              'path': '../foo'
+            }
+          }
         }),
-        d.dir("web", [
-          // This is transformed by foo/first. It's used to see which
+            d.dir("web", [// This is transformed by foo/first. It's used to see which
           // transformers ran on foo/first.
           d.file("first.dart", 'const TOKEN = "myapp/first";'),
-
-          // This is transformed by foo/second. It's used to see which
+              // This is transformed by foo/second. It's used to see which
           // transformers ran on foo/second.
-          d.file("second.dart", 'const TOKEN = "myapp/second";')
-        ])
-      ]).create();
+          d.file("second.dart", 'const TOKEN = "myapp/second";')])]).create();
 
       createLockFile('myapp', sandbox: ['foo'], pkg: ['barback']);
 
       pubServe();
 
       // The version of foo/first used on myapp should have myapp's
       // configuration and shouldn't be transformed by foo/second.
-      requestShouldSucceed("first.dart",
+      requestShouldSucceed(
+          "first.dart",
           'const TOKEN = "(myapp/first, foo/first in myapp)";');
 
       // foo/second should be transformed by only foo/first.
-      requestShouldSucceed("second.dart",
+      requestShouldSucceed(
+          "second.dart",
           'const TOKEN = "(myapp/second, (foo/second, foo/first in foo))";');
 
       endPubServe();
     });
   });
 }