Roll Observatory packages and add a roll script

packages/charted/test.disabled/event/event_test.dart

Index: packages/charted/test.disabled/event/event_test.dart
diff --git a/packages/charted/test.disabled/event/event_test.dart b/packages/charted/test.disabled/event/event_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b90d23a4c31b4f36cca3cc1b1c7961530a9c365a
--- /dev/null
+++ b/packages/charted/test.disabled/event/event_test.dart
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file or at
+ * https://developers.google.com/open-source/licenses/bsd
+ */
+
+library charted.test.event;
+
+import 'dart:async';
+import 'package:unittest/unittest.dart';
+import 'package:charted/event/event.dart';
+
+
+part 'timer_test.dart';
+
+eventTests() {
+  testTimer();
+}