Command line parsing utilities. Not yet used in observatory.

runtime/observatory/lib/cli.dart

Index: runtime/observatory/lib/cli.dart
diff --git a/tests/html/deferred_multi_app_lib.dart b/runtime/observatory/lib/cli.dart
similarity index 77%
copy from tests/html/deferred_multi_app_lib.dart
copy to runtime/observatory/lib/cli.dart
index 6ec352d4a43cf336d85abaf9ebc816150ef0d007..607c58a919685c7fca635c1bf5acb02543720582 100644
--- a/tests/html/deferred_multi_app_lib.dart
+++ b/runtime/observatory/lib/cli.dart
@@ -2,10 +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.
 
-one() {
-  return "one";
-}
+library cli;
 
-two() {
-  return "two";
-}
+import 'dart:async';
+
+part 'src/cli/command.dart';