Clean up VMState a little bit.

src/log-utils.h

Index: src/log-utils.h
diff --git a/src/log-utils.h b/src/log-utils.h
index d0cb82898319004149f5b2a83b4133e43511df02..a1867f25826ecd0a927e21730aa191f32d42266f 100644
--- a/src/log-utils.h
+++ b/src/log-utils.h
@@ -44,6 +44,12 @@ class Log {
   // Disables logging, but preserves acquired resources.
   void stop() { is_stopped_ = true; }
 
+  static bool InitLogAtStart() {
+    return FLAG_log || FLAG_log_runtime || FLAG_log_api
+        || FLAG_log_code || FLAG_log_gc || FLAG_log_handles || FLAG_log_suspect
+        || FLAG_log_regexp || FLAG_ll_prof || FLAG_log_internal_timer_events;
+  }
+
   // Frees all resources acquired in Initialize and Open... functions.
   // When a temporary file is used for the log, returns its stream descriptor,
   // leaving the file open.