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

runtime/vm/service_event.h

Index: runtime/vm/service_event.h
diff --git a/runtime/vm/service_event.h b/runtime/vm/service_event.h
index 6ebc2118b5e06106e4f2ced7707c13b1240ef944..80c3b697bc1165ccecc1d1ae6a9b43840315d9db 100644
--- a/runtime/vm/service_event.h
+++ b/runtime/vm/service_event.h
@@ -59,6 +59,7 @@ class ServiceEvent {
         top_frame_(NULL),
         exception_(NULL),
         async_continuation_(NULL),
+        at_async_jump_(false),
         inspectee_(NULL),
         gc_stats_(NULL),
         bytes_(NULL),
@@ -122,6 +123,13 @@ class ServiceEvent {
     async_continuation_ = closure;
   }
 
+  bool at_async_jump() const {
+    return at_async_jump_;
+  }
+  void set_at_async_jump(bool value) {
+    at_async_jump_ = value;
+  }
+
   const Object* inspectee() const {
     return inspectee_;
   }
@@ -168,6 +176,7 @@ class ServiceEvent {
   ActivationFrame* top_frame_;
   const Object* exception_;
   const Object* async_continuation_;
+  bool at_async_jump_;
   const Object* inspectee_;
   const Heap::GCStats* gc_stats_;
   const uint8_t* bytes_;