Add Scoped Context Info (Isolate) to V8 Traces

src/log-inl.h

Index: src/log-inl.h
diff --git a/src/log-inl.h b/src/log-inl.h
index d47a24b96afae22190671099663fecb3607bae08..81d834b8df92911f5e00a0fa312d4f031a65effe 100644
--- a/src/log-inl.h
+++ b/src/log-inl.h
@@ -38,6 +38,9 @@ void Logger::CallEventLogger(Isolate* isolate, const char* name, StartEnd se,
       isolate->event_logger()(name, se);
     }
   }
+
+  // We make 2 different macro calls instead of precalculating the category
+  // name because the category enabled status is cached based on its line no.
   if (expose_to_api) {
     if (se == START) {
       TRACE_EVENT_BEGIN0("v8", name);