Split the TRACE_EVENTs from the LOG/HistogramTimers/TimerEvents functionality.

src/counters.h

Index: src/counters.h
diff --git a/src/counters.h b/src/counters.h
index 375edc82a50e07a8daac6f1579df91f80b6f01d5..87ce1f5bd83a3e332dad2062a7dcf81402f96483 100644
--- a/src/counters.h
+++ b/src/counters.h
@@ -198,6 +198,8 @@ class Histogram {
     lookup_done_ = false;
   }
 
+  const char* name() { return name_; }
+
  protected:
   // Returns the handle to the histogram.
   void* GetHistogram() {
@@ -208,7 +210,6 @@ class Histogram {
     return histogram_;
   }
 
-  const char* name() { return name_; }
   Isolate* isolate() const { return isolate_; }
 
  private: