Enable strict flags for all service tests

runtime/observatory/test/vm_test.dart

Index: runtime/observatory/test/vm_test.dart
diff --git a/runtime/observatory/test/vm_test.dart b/runtime/observatory/test/vm_test.dart
index 86fa08937438b02f79c63e6e57528bf151dacd8d..aea81caaaa2d005fd4ac6667c8d95c5dc6540e5b 100644
--- a/runtime/observatory/test/vm_test.dart
+++ b/runtime/observatory/test/vm_test.dart
@@ -1,3 +1,8 @@
+// Copyright (c) 2015, 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.
+// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override --checked
+
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';