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runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 197c77fe8f99e286d96e6a5c3e90e83c0dc60ed7..fa072d8c0ac20bbf344ab00970b8a4b13129f548 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -45,6 +45,7 @@ namespace dart {
 
 DECLARE_FLAG(bool, trace_service);
 DECLARE_FLAG(bool, trace_service_pause_events);
+DECLARE_FLAG(bool, profile_vm);
 DEFINE_FLAG(charp, vm_name, "vm",
             "The default name of this vm as reported by the VM service "
             "protocol");
@@ -3642,6 +3643,7 @@ void Service::PrintJSONForVM(JSONStream* js, bool ref) {
   jsobj.AddProperty("targetCPU", CPU::Id());
   jsobj.AddProperty("hostCPU", HostCPUFeatures::hardware());
   jsobj.AddProperty("version", Version::String());
+  jsobj.AddProperty("_profilerMode", FLAG_profile_vm ? "VM" : "Dart");
   jsobj.AddProperty64("pid", OS::ProcessId());
   int64_t start_time_millis = (vm_isolate->start_time() /
                                kMicrosecondsPerMillisecond);