Add step OverAwait to service protocol

runtime/observatory/tests/service/vm_timeline_flags_test.dart

Index: runtime/observatory/tests/service/vm_timeline_flags_test.dart
diff --git a/runtime/observatory/tests/service/vm_timeline_flags_test.dart b/runtime/observatory/tests/service/vm_timeline_flags_test.dart
index 6e8994e06806feea863ad2e29303602a6fc2bc53..7515f0c80ac7604baee9111d1df36276b94c49ea 100644
--- a/runtime/observatory/tests/service/vm_timeline_flags_test.dart
+++ b/runtime/observatory/tests/service/vm_timeline_flags_test.dart
@@ -60,6 +60,7 @@ var tests = [
     // Confirm that only Dart is being recorded.
     expect(flags['recordedStreams'].length, equals(1));
     expect(flags['recordedStreams'].contains('Dart'), isTrue);
+    print(flags);
   },
   resumeIsolate,
   (Isolate isolate) async {
@@ -67,6 +68,7 @@ var tests = [
     Map result = await isolate.vm.invokeRpcNoUpgrade('_getVMTimeline', {});
     expect(result['type'], equals('_Timeline'));
     expect(result['traceEvents'], new isInstanceOf<List>());
+    print(result['traceEvents']);
     // Confirm that Dart events are added.
     expect(filterEvents(result['traceEvents'], isDart).length, greaterThan(0));
     // Confirm that zero non-Dart events are added.