[counters] Annotate v8 with more runtime call counters.

src/vm-state-inl.h

Index: src/vm-state-inl.h
diff --git a/src/vm-state-inl.h b/src/vm-state-inl.h
index c8bd4e80828d92dbe0b5b3ebef211c6a7df409bc..35b69a1ddc43dec96b2edb06798314a7abfba5cc 100644
--- a/src/vm-state-inl.h
+++ b/src/vm-state-inl.h
@@ -63,19 +63,11 @@ ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback)
   scope_address_ = Simulator::current(isolate)->get_sp();
 #endif
   isolate_->set_external_callback_scope(this);
-  if (FLAG_runtime_call_stats) {
-    RuntimeCallStats* stats = isolate->counters()->runtime_call_stats();
-    timer_.Initialize(&stats->ExternalCallback, stats->current_timer());
-    stats->Enter(&timer_);
-  }
   TRACE_EVENT_BEGIN0(TRACE_DISABLED_BY_DEFAULT("v8.runtime"),
                      "V8.ExternalCallback");
 }
 
 ExternalCallbackScope::~ExternalCallbackScope() {
-  if (FLAG_runtime_call_stats) {
-    isolate_->counters()->runtime_call_stats()->Leave(&timer_);
-  }
   isolate_->set_external_callback_scope(previous_scope_);
   TRACE_EVENT_END0(TRACE_DISABLED_BY_DEFAULT("v8.runtime"),
                    "V8.ExternalCallback");