Fix V8's default timer event logger.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 4fbbc80708b1ee723c68843922faec65a6eaa22c..fe56c2b8904d590a2861f2d991625a574bd82373 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6711,7 +6711,7 @@ void Isolate::GetStackSample(const RegisterState& state, void** frames,
 
 void Isolate::SetEventLogger(LogEventCallback that) {
   // Do not overwrite the event logger if we want to log explicitly.
-  if (i::FLAG_log_timer_events) return;
+  if (i::FLAG_log_internal_timer_events) return;
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   isolate->set_event_logger(that);
 }