Enable strict flags for all service tests

runtime/observatory/test/call_site_data_test.dart

Index: runtime/observatory/test/call_site_data_test.dart
diff --git a/runtime/observatory/test/call_site_data_test.dart b/runtime/observatory/test/call_site_data_test.dart
index 366c721625b07792cab48a806276e392d1afbdd6..5d2db7bef6ccda9c01d1cea30fe138a2c15712a5 100644
--- a/runtime/observatory/test/call_site_data_test.dart
+++ b/runtime/observatory/test/call_site_data_test.dart
@@ -1,6 +1,7 @@
 // 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
 
 library call_site_data_test;