Command line parsing utilities. Not yet used in observatory.

runtime/observatory/lib/cli.dart

Index: runtime/observatory/lib/cli.dart
diff --git a/tests/compiler/dart2js/http_launch_data/http_launch_main.dart b/runtime/observatory/lib/cli.dart
similarity index 77%
copy from tests/compiler/dart2js/http_launch_data/http_launch_main.dart
copy to runtime/observatory/lib/cli.dart
index 68ea63472f29d5b7d7d4de8a863c4d05cd7db0bd..1043724a65649fe16b021fe36f72bc8a9c2b3ea6 100644
--- a/tests/compiler/dart2js/http_launch_data/http_launch_main.dart
+++ b/runtime/observatory/lib/cli.dart
@@ -2,9 +2,8 @@
 // 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 cli;
 
-import 'lib1.dart';
+import 'dart:async';
 
-main() {
-  print(foo());
-}
+part 'src/cli/command.dart';