Adding Angular and dependent packages for testing

third_party/pkg/js/lib/js_wrapping.dart

Index: third_party/pkg/js/lib/js_wrapping.dart
diff --git a/third_party/pkg/js/lib/js_wrapping.dart b/third_party/pkg/js/lib/js_wrapping.dart
new file mode 100644
index 0000000000000000000000000000000000000000..39ea0a0a8daa81ee1b252fd16deefe84fbfb27dc
--- /dev/null
+++ b/third_party/pkg/js/lib/js_wrapping.dart
@@ -0,0 +1,17 @@
+// 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.
+
+library js.wrapping;
+
+import 'dart:collection';
+import 'dart:math' show Random;
+import 'js.dart';
+
+part 'src/wrapping/translator.dart';
+part 'src/wrapping/typed_proxy.dart';
+part 'src/wrapping/magic_proxy.dart';
+part 'src/wrapping/util.dart';
+part 'src/wrapping/js/array_to_list_adapter.dart';
+part 'src/wrapping/js/date_to_datetime_adapter.dart';
+part 'src/wrapping/js/object_to_map_adapter.dart';