[gardening] Mark reloaded files as other resources.

This way, they'll be copied to the output directory and
can be loaded appropriately by the reload test.

This fixes https://github.com/dart-lang/sdk/issues/35506.

Change-Id: Id297703679068ae674b93b6adf0015bb966a6e33
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/97512
Reviewed-by: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
diff --git a/runtime/observatory/tests/service/simple_reload_test.dart b/runtime/observatory/tests/service/simple_reload_test.dart
index 9a41817..3ae8295 100644
--- a/runtime/observatory/tests/service/simple_reload_test.dart
+++ b/runtime/observatory/tests/service/simple_reload_test.dart
@@ -1,6 +1,8 @@
 // Copyright (c) 2018, 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.
+//
+// OtherResources=simple_reload/v1/main.dart simple_reload/v2/main.dart
 
 import 'test_helper.dart';
 import 'dart:async';