UMA_HISTOGRAM_TIMES_16H   73 content/browser/renderer_host/media/media_stream_track_metrics_host.cc       UMA_HISTOGRAM_TIMES_16H("WebRTC.ReceivedAudioTrackDuration", duration);
UMA_HISTOGRAM_TIMES_16H   76 content/browser/renderer_host/media/media_stream_track_metrics_host.cc       UMA_HISTOGRAM_TIMES_16H("WebRTC.ReceivedVideoTrackDuration", duration);
UMA_HISTOGRAM_TIMES_16H   81 content/browser/renderer_host/media/media_stream_track_metrics_host.cc       UMA_HISTOGRAM_TIMES_16H("WebRTC.SentAudioTrackDuration", duration);
UMA_HISTOGRAM_TIMES_16H   84 content/browser/renderer_host/media/media_stream_track_metrics_host.cc       UMA_HISTOGRAM_TIMES_16H("WebRTC.SentVideoTrackDuration", duration);