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

sdk/lib/_internal/pub_generated/test/global/binstubs/name_collision_with_overwrite_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS 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.
 
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
   initConfig();
   integration("overwrites an existing binstub if --overwrite is passed", () {
-    d.dir("foo", [
-      d.pubspec({
+    d.dir("foo", [d.pubspec({
         "name": "foo",
         "executables": {
           "foo": "foo",
           "collide1": "foo",
           "collide2": "foo"
         }
       }),
-      d.dir("bin", [
-        d.file("foo.dart", "main() => print('ok');")
-      ])
-    ]).create();
+          d.dir("bin", [d.file("foo.dart", "main() => print('ok');")])]).create();
 
-    d.dir("bar", [
-      d.pubspec({
+    d.dir("bar", [d.pubspec({
         "name": "bar",
         "executables": {
           "bar": "bar",
           "collide1": "bar",
           "collide2": "bar"
         }
       }),
-      d.dir("bin", [
-        d.file("bar.dart", "main() => print('ok');")
-      ])
-    ]).create();
+          d.dir("bin", [d.file("bar.dart", "main() => print('ok');")])]).create();
 
     schedulePub(args: ["global", "activate", "-spath", "../foo"]);
 
-    var pub = startPub(args: [
-      "global", "activate", "-spath", "../bar", "--overwrite"
-    ]);
-    pub.stdout.expect(consumeThrough(
-        "Installed executables bar, collide1 and collide2."));
+    var pub =
+        startPub(args: ["global", "activate", "-spath", "../bar", "--overwrite"]);
+    pub.stdout.expect(
+        consumeThrough("Installed executables bar, collide1 and collide2."));
     pub.stderr.expect("Replaced collide1 previously installed from foo.");
     pub.stderr.expect("Replaced collide2 previously installed from foo.");
     pub.shouldExit();
 
-    d.dir(cachePath, [
-      d.dir("bin", [
-        d.matcherFile(binStubName("foo"), contains("foo:foo")),
-        d.matcherFile(binStubName("bar"), contains("bar:bar")),
-        d.matcherFile(binStubName("collide1"), contains("bar:bar")),
-        d.matcherFile(binStubName("collide2"), contains("bar:bar"))
-      ])
-    ]).validate();
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                "bin",
+                [
+                    d.matcherFile(binStubName("foo"), contains("foo:foo")),
+                    d.matcherFile(binStubName("bar"), contains("bar:bar")),
+                    d.matcherFile(binStubName("collide1"), contains("bar:bar")),
+                    d.matcherFile(binStubName("collide2"), contains("bar:bar"))])]).validate();
   });
 }