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

sdk/lib/_internal/pub_generated/test/descriptor.dart

 // Copyright (c) 2013, 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.
 
 /// Pub-specific scheduled_test descriptors.
 library descriptor;
 
 import 'package:oauth2/oauth2.dart' as oauth2;
 import 'package:scheduled_test/scheduled_server.dart';
 import 'package:scheduled_test/descriptor.dart';
@@ skipping 10 matching lines @@
 
 /// Creates a new [GitRepoDescriptor] with [name] and [contents].
 GitRepoDescriptor git(String name, [Iterable<Descriptor> contents]) =>
     new GitRepoDescriptor(name, contents == null ? <Descriptor>[] : contents);
 
 /// Creates a new [TarRepoDescriptor] with [name] and [contents].
 TarFileDescriptor tar(String name, [Iterable<Descriptor> contents]) =>
     new TarFileDescriptor(name, contents == null ? <Descriptor>[] : contents);
 
 /// Describes a package that passes all validation.
-Descriptor get validPackage => dir(appPath, [
-  libPubspec("test_pkg", "1.0.0"),
-  file("LICENSE", "Eh, do what you want."),
-  dir("lib", [
-    file("test_pkg.dart", "int i = 1;")
-  ])
-]);
+Descriptor get validPackage =>
+    dir(
+        appPath,
+        [
+            libPubspec("test_pkg", "1.0.0"),
+            file("LICENSE", "Eh, do what you want."),
+            dir("lib", [file("test_pkg.dart", "int i = 1;")])]);
 
 /// Returns a descriptor of a snapshot that can't be run by the current VM.
 ///
 /// This snapshot was generated by the VM on r39611, the revision immediately
 /// before snapshot versioning was added.
 FileDescriptor outOfDateSnapshot(String name) =>
     binaryFile(name, readBinaryFile(testAssetPath('out-of-date.snapshot')));
 
 /// Describes a file named `pubspec.yaml` with the given YAML-serialized
 /// [contents], which should be a serializable object.
 ///
 /// [contents] may contain [Future]s that resolve to serializable objects,
 /// which may in turn contain [Future]s recursively.
 Descriptor pubspec(Map contents) {
-  return async(awaitObject(contents).then((resolvedContents) =>
-      file("pubspec.yaml", yaml(resolvedContents))));
+  return async(
+      awaitObject(
+          contents).then(
+              (resolvedContents) => file("pubspec.yaml", yaml(resolvedContents))));
 }
 
 /// Describes a file named `pubspec.yaml` for an application package with the
 /// given [dependencies].
 Descriptor appPubspec([Map dependencies]) {
-  var map = {"name": "myapp"};
+  var map = {
+    "name": "myapp"
+  };
   if (dependencies != null) map["dependencies"] = dependencies;
   return pubspec(map);
 }
 
 /// Describes a file named `pubspec.yaml` for a library package with the given
 /// [name], [version], and [deps]. If "sdk" is given, then it adds an SDK
 /// constraint on that version.
 Descriptor libPubspec(String name, String version, {Map deps, String sdk}) {
   var map = packageMap(name, version, deps);
-  if (sdk != null) map["environment"] = {"sdk": sdk};
+  if (sdk != null) map["environment"] = {
+    "sdk": sdk
+  };
   return pubspec(map);
 }
 
 /// Describes a directory named `lib` containing a single dart file named
 /// `<name>.dart` that contains a line of Dart code.
 Descriptor libDir(String name, [String code]) {
   // Default to printing the name if no other code was given.
   if (code == null) code = name;
-  return dir("lib", [
-    file("$name.dart", 'main() => "$code";')
-  ]);
+  return dir("lib", [file("$name.dart", 'main() => "$code";')]);
 }
 
 /// Describes a directory for a Git package. This directory is of the form
 /// found in the revision cache of the global package cache.
 Descriptor gitPackageRevisionCacheDir(String name, [int modifier]) {
   var value = name;
   if (modifier != null) value = "$name $modifier";
-  return pattern(new RegExp("$name${r'-[a-f0-9]+'}"),
+  return pattern(
+      new RegExp("$name${r'-[a-f0-9]+'}"),
       (dirName) => dir(dirName, [libDir(name, value)]));
 }
 
 /// Describes a directory for a Git package. This directory is of the form
 /// found in the repo cache of the global package cache.
 Descriptor gitPackageRepoCacheDir(String name) {
-  return pattern(new RegExp("$name${r'-[a-f0-9]+'}"),
-      (dirName) => dir(dirName, [
-    dir('hooks'),
-    dir('info'),
-    dir('objects'),
-    dir('refs')
-  ]));
+  return pattern(
+      new RegExp("$name${r'-[a-f0-9]+'}"),
+      (dirName) =>
+          dir(dirName, [dir('hooks'), dir('info'), dir('objects'), dir('refs')]));
 }
 
 /// Describes the `packages/` directory containing all the given [packages],
 /// which should be name/version pairs. The packages will be validated against
 /// the format produced by the mock package server.
 ///
 /// A package with a null version should not be downloaded.
 Descriptor packagesDir(Map<String, String> packages) {
   var contents = <Descriptor>[];
   packages.forEach((name, version) {
     if (version == null) {
       contents.add(nothing(name));
     } else {
-      contents.add(dir(name, [
-        file("$name.dart", 'main() => "$name $version";')
-      ]));
+      contents.add(
+          dir(name, [file("$name.dart", 'main() => "$name $version";')]));
     }
   });
   return dir(packagesPath, contents);
 }
 
 /// Describes the global package cache directory containing all the given
 /// [packages], which should be name/version pairs. The packages will be
 /// validated against the format produced by the mock package server.
 ///
 /// A package's value may also be a list of versions, in which case all
@@ skipping 16 matching lines @@
       contents.add(dir("$name-$version", packageContents));
     }
   });
 
   return hostedCache(contents);
 }
 
 /// Describes the main cache directory containing cached hosted packages
 /// downloaded from the mock package server.
 Descriptor hostedCache(Iterable<Descriptor> contents) {
-  return dir(cachePath, [
-    dir('hosted', [
-      async(port.then((p) => dir('localhost%58$p', contents)))
-    ])
-  ]);
+  return dir(
+      cachePath,
+      [dir('hosted', [async(port.then((p) => dir('localhost%58$p', contents)))])]);
 }
 
 /// Describes the file in the system cache that contains the client's OAuth2
 /// credentials. The URL "/token" on [server] will be used as the token
 /// endpoint for refreshing the access token.
-Descriptor credentialsFile(
-    ScheduledServer server,
-    String accessToken,
-    {String refreshToken,
-     DateTime expiration}) {
+Descriptor credentialsFile(ScheduledServer server, String accessToken,
+    {String refreshToken, DateTime expiration}) {
   return async(server.url.then((url) {
-    return dir(cachePath, [
-      file('credentials.json', new oauth2.Credentials(
-          accessToken,
-          refreshToken,
-          url.resolve('/token'),
-          ['https://www.googleapis.com/auth/userinfo.email'],
-          expiration).toJson())
-    ]);
+    return dir(
+        cachePath,
+        [
+            file(
+                'credentials.json',
+                new oauth2.Credentials(
+                    accessToken,
+                    refreshToken,
+                    url.resolve('/token'),
+                    ['https://www.googleapis.com/auth/userinfo.email'],
+                    expiration).toJson())]);
   }));
 }
 
 /// Describes the application directory, containing only a pubspec specifying
 /// the given [dependencies].
 DirectoryDescriptor appDir([Map dependencies]) =>
-  dir(appPath, [appPubspec(dependencies)]);
+    dir(appPath, [appPubspec(dependencies)]);