[Tracing] Embed V8 runtime call stats into tracing.

src/api-arguments.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api-arguments.h"
 
 #include "src/tracing/trace-event.h"
 #include "src/vm-state-inl.h"
 
 namespace v8 {
 namespace internal {
 
 Handle<Object> FunctionCallbackArguments::Call(FunctionCallback f) {
   Isolate* isolate = this->isolate();
   RuntimeCallTimerScope timer(isolate, &RuntimeCallStats::FunctionCallback);
+  TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
+      isolate, &internal::tracing::TraceEventStatsTable::FunctionCallback);
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
   FunctionCallbackInfo<v8::Value> info(begin(), argv_, argc_);
   f(info);
   return GetReturnValue<Object>(isolate);
 }
 
 Handle<JSObject> PropertyCallbackArguments::Call(
     IndexedPropertyEnumeratorCallback f) {
   Isolate* isolate = this->isolate();
   RuntimeCallTimerScope timer(isolate, &RuntimeCallStats::PropertyCallback);
+  TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
+      isolate, &internal::tracing::TraceEventStatsTable::PropertyCallback);
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, FUNCTION_ADDR(f));
   PropertyCallbackInfo<v8::Array> info(begin());
   f(info);
   return GetReturnValue<JSObject>(isolate);
 }
 
 }  // namespace internal
 }  // namespace v8