Handle duration events when filtering the timeline for a time range

runtime/lib/timeline.cc

Index: runtime/lib/timeline.cc
diff --git a/runtime/lib/timeline.cc b/runtime/lib/timeline.cc
index f62a8a722828e53294dab781c1042d9f27de618a..8410f1bb5074f9f018cc829ba1283ba608c9d48d 100644
--- a/runtime/lib/timeline.cc
+++ b/runtime/lib/timeline.cc
@@ -125,6 +125,7 @@ DEFINE_NATIVE_ENTRY(Timeline_reportCompleteEvent, 5) {
   }
   // json was allocated in the zone and a copy will be stored in event.
   event->SerializedJSON(json, start.AsInt64Value(), end.AsInt64Value());
+  event->SetSerializedJSONIsDuration(true);
   event->Complete();
 
   return Object::null();