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

sdk/lib/_internal/pub_generated/test/get/git/check_out_test.dart

Index: sdk/lib/_internal/pub_generated/test/get/git/check_out_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/get/git/check_out_test.dart b/sdk/lib/_internal/pub_generated/test/get/git/check_out_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..9e25aad0911d864cc860727a92778df411d2f5b7
--- /dev/null
+++ b/sdk/lib/_internal/pub_generated/test/get/git/check_out_test.dart
@@ -0,0 +1,38 @@
+// Copyright (c) 2012, 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.
+
+library pub_tests;
+
+import '../../descriptor.dart' as d;
+import '../../test_pub.dart';
+
+main() {
+  initConfig();
+  integration('checks out a package from Git', () {
+    ensureGit();
+
+    d.git('foo.git', [d.libDir('foo'), d.libPubspec('foo', '1.0.0')]).create();
+
+    d.appDir({
+      "foo": {
+        "git": "../foo.git"
+      }
+    }).create();
+
+    pubGet();
+
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                'git',
+                [
+                    d.dir('cache', [d.gitPackageRepoCacheDir('foo')]),
+                    d.gitPackageRevisionCacheDir('foo')])]).validate();
+
+    d.dir(
+        packagesPath,
+        [d.dir('foo', [d.file('foo.dart', 'main() => "foo";')])]).validate();
+  });
+}