Track JS allocations as they arrive with no affection on performance when tracking is switched off

include/v8-profiler.h

Index: include/v8-profiler.h
diff --git a/include/v8-profiler.h b/include/v8-profiler.h
index 7016a79b81e5dd0e5755dadae0a8d1abdc9d726f..0882d6452732373293bf6deb2a4e3ba92c3eff0e 100644
--- a/include/v8-profiler.h
+++ b/include/v8-profiler.h
@@ -475,6 +475,19 @@ class V8_EXPORT HeapProfiler {
    */
   void SetRetainedObjectInfo(UniqueId id, RetainedObjectInfo* info);
 
+  /**
+   * Starts recording JS allocations immediately as they arrive and tracking of
+   * heap objects population statistics.
+   */
+  void StartRecordingHeapAllocations();
+
+  /**
+   * Stops recording JS allocations and tracking of heap objects population
+   * statistics, cleans all collected heap objects population statistics data.
+   */
+  void StopRecordingHeapAllocations();
+
+
  private:
   HeapProfiler();
   ~HeapProfiler();