Add step OverAwait to service protocol

runtime/observatory/tests/service/smart_next_test.dart

Index: runtime/observatory/tests/service/smart_next_test.dart
diff --git a/runtime/observatory/tests/service/smart_next_test.dart b/runtime/observatory/tests/service/smart_next_test.dart
index 34bac34a5b930f715bdbf028fb28cccf0a9400f2..0ea8c2d69f7bf6e7ba6c6e71f1c178515b5c0481 100644
--- a/runtime/observatory/tests/service/smart_next_test.dart
+++ b/runtime/observatory/tests/service/smart_next_test.dart
@@ -45,10 +45,10 @@ stepOverAwaitingResume(Isolate isolate) async {
 }
 
 smartNext(Isolate isolate) async {
-  if (isolate.pauseEvent.atAsyncJump) {
+  if (isolate.pauseEvent.atAsyncContinuation) {
     print("next-async");
     List asyncStepFutures = await isolate.asyncStepOver();
-    return asyncStepFutures[Isolate.kSecondResume];
+    return asyncStepFutures[Isolate.kPauseFuture];
   } else {
     print("next-sync");
     return stepOverAwaitingResume(isolate);