Automagically change the meaning of 'next' to 'async-next' when paused at an async function at awai…

runtime/vm/service_event.cc

Index: runtime/vm/service_event.cc
diff --git a/runtime/vm/service_event.cc b/runtime/vm/service_event.cc
index d704091d5971e6b9ce25db2d8952a6c80a73bf46..ce1e7fb04905a4ee12dc7a551482ee1e9e1e6100 100644
--- a/runtime/vm/service_event.cc
+++ b/runtime/vm/service_event.cc
@@ -45,6 +45,7 @@ ServiceEvent::ServiceEvent(const DebuggerEvent* debugger_event)
   if (type == DebuggerEvent::kBreakpointReached) {
     set_breakpoint(debugger_event->breakpoint());
     set_async_continuation(debugger_event->async_continuation());
+    set_at_async_jump(debugger_event->at_async_jump());
   }
   if (type == DebuggerEvent::kExceptionThrown) {
     set_exception(debugger_event->exception());
@@ -168,6 +169,7 @@ void ServiceEvent::PrintJSON(JSONStream* js) const {
   }
   if (async_continuation() != NULL && !async_continuation()->IsNull()) {
     jsobj.AddProperty("_asyncContinuation", *(async_continuation()));
+    jsobj.AddProperty("_atAsyncJump", at_async_jump());
   }
   if (inspectee() != NULL) {
     jsobj.AddProperty("inspectee", *(inspectee()));