MSE: Log buffered audio splice generation to media-internals

content/renderer/media/render_media_log.h

Index: content/renderer/media/render_media_log.h
diff --git a/content/renderer/media/render_media_log.h b/content/renderer/media/render_media_log.h
index b5e41a560e5136789a95cfb85e798eebffacec52..63ccdd78b3bee9c5dccc1d95f63d6c5d03c88c24 100644
--- a/content/renderer/media/render_media_log.h
+++ b/content/renderer/media/render_media_log.h
@@ -46,8 +46,11 @@ class CONTENT_EXPORT RenderMediaLog : public media::MediaLog {
   base::TimeTicks last_ipc_send_time_;
   std::vector<media::MediaLogEvent> queued_media_events_;
 
-  // Limits the number buffered extents changed events we send over IPC to one.
+  // Limit the number buffered extents changed and buffered audio splice
+  // statistics changed events we send over IPC to one each.
   scoped_ptr<media::MediaLogEvent> last_buffered_extents_changed_event_;
+  scoped_ptr<media::MediaLogEvent>
+      last_buffered_audio_splice_stats_changed_event_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderMediaLog);
 };