[corelib] dart:developer timeline flow events

runtime/vm/timeline.h

Index: runtime/vm/timeline.h
diff --git a/runtime/vm/timeline.h b/runtime/vm/timeline.h
index eecb0dd2f01f06cda623309c41bd44eb42878047..d7203487d7badabe920adff401aefc7a1e4c006a 100644
--- a/runtime/vm/timeline.h
+++ b/runtime/vm/timeline.h
@@ -875,6 +875,17 @@ class DartTimelineEventHelpers : public AllStatic {
                                   const char* name,
                                   const char* args);
 
+  static void ReportFlowEvent(Thread* thread,
+                              Zone* zone,
+                              TimelineEvent* event,
+                              int64_t start,
+                              int64_t start_cpu,
+                              const char* category,
+                              const char* name,
+                              int64_t type,
+                              int64_t flow_id,
+                              const char* args);
+
   static void ReportInstantEvent(Thread* thread,
                                  Zone* zone,
                                  TimelineEvent* event,
@@ -907,6 +918,17 @@ class DartCommonTimelineEventHelpers : public AllStatic {
                                   const char* name,
                                   const char* args);
 
+  static void ReportFlowEvent(Thread* thread,
+                              Zone* zone,
+                              TimelineEvent* event,
+                              int64_t start,
+                              int64_t start_cpu,
+                              const char* category,
+                              const char* name,
+                              int64_t type,
+                              int64_t flow_id,
+                              const char* args);
+
   static void ReportInstantEvent(Thread* thread,
                                  Zone* zone,
                                  TimelineEvent* event,