[Tracing] Embed V8 runtime call stats into tracing.

src/lookup.cc

Index: src/lookup.cc
diff --git a/src/lookup.cc b/src/lookup.cc
index 4ab0a7f6ea84983241a70ea6ffe72bbafac30573..54015d44c6826ea53885d49aa32045b7039426e1 100644
--- a/src/lookup.cc
+++ b/src/lookup.cc
@@ -416,6 +416,11 @@ void LookupIterator::Delete() {
         isolate_, is_prototype_map
                       ? &RuntimeCallStats::PrototypeObject_DeleteProperty
                       : &RuntimeCallStats::Object_DeleteProperty);
+    TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
+        isolate_,
+        (is_prototype_map
+             ? &tracing::TraceEventStatsTable::PrototypeObject_DeleteProperty
+             : &tracing::TraceEventStatsTable::Object_DeleteProperty));
 
     PropertyNormalizationMode mode =
         is_prototype_map ? KEEP_INOBJECT_PROPERTIES : CLEAR_INOBJECT_PROPERTIES;