Expose MEDIA_STATISTICS stats to chrome://media-internals.

media/base/media_log.cc

Index: media/base/media_log.cc
diff --git a/media/base/media_log.cc b/media/base/media_log.cc
index abd845b30053d57354c954fa93faed58d05b0c6e..8ac51716c49d2252be25b3be5c403fcbcdb6bba3 100644
--- a/media/base/media_log.cc
+++ b/media/base/media_log.cc
@@ -56,6 +56,8 @@ const char* MediaLog::EventTypeToString(MediaLogEvent::Type type) {
       return "BUFFERED_EXTENTS_CHANGED";
     case MediaLogEvent::MEDIA_SOURCE_ERROR:
       return "MEDIA_SOURCE_ERROR";
+    case MediaLogEvent::PIPELINE_STATISTICS_CHANGED:
+      return "PIPELINE_STATISTICS_CHANGED";
   }
   NOTREACHED();
   return NULL;
@@ -196,4 +198,14 @@ scoped_ptr<MediaLogEvent> MediaLog::CreateMediaSourceErrorEvent(
   return event.Pass();
 }
 
+scoped_ptr<MediaLogEvent> MediaLog::CreatePipelineStatisticsChangedEvent(
+    const PipelineStatistics& stats) {
+  scoped_ptr<MediaLogEvent> event(
+      CreateEvent(MediaLogEvent::PIPELINE_STATISTICS_CHANGED));
+  event->params.SetInteger("decoded_audio_bytes", stats.audio_bytes_decoded);
+  event->params.SetInteger("decoded_video_bytes", stats.video_bytes_decoded);
+  event->params.SetInteger("decoded_video_frames", stats.video_frames_decoded);
+  event->params.SetInteger("dropped_video_frames", stats.video_frames_dropped);
+  return event.Pass();
+}
 }  //namespace media