[Tracing] Use TracingCategoryObserver in runtime statistics

src/counters.h

Index: src/counters.h
diff --git a/src/counters.h b/src/counters.h
index ee4a0ffeac4b74c82840583ed9e2d3cc955659bf..eb92a90ea743e815d15b7f77153f94913e7ab560 100644
--- a/src/counters.h
+++ b/src/counters.h
@@ -853,14 +853,13 @@ class RuntimeCallStats {
   bool in_use_;
 };
 
-#define TRACE_RUNTIME_CALL_STATS(isolate, counter_name)                 \
-  do {                                                                  \
-    if (V8_UNLIKELY(TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_ENABLED() || \
-                    FLAG_runtime_call_stats)) {                         \
-      RuntimeCallStats::CorrectCurrentCounterId(                        \
-          isolate->counters()->runtime_call_stats(),                    \
-          &RuntimeCallStats::counter_name);                             \
-    }                                                                   \
+#define TRACE_RUNTIME_CALL_STATS(isolate, counter_name) \
+  do {                                                  \
+    if (V8_UNLIKELY(FLAG_runtime_stats)) {              \
+      RuntimeCallStats::CorrectCurrentCounterId(        \
+          isolate->counters()->runtime_call_stats(),    \
+          &RuntimeCallStats::counter_name);             \
+    }                                                   \
   } while (false)
 
 #define TRACE_HANDLER_STATS(isolate, counter_name) \