Remove 'persistent-usage-record' MediaKeySessionType

[gregwfreedman]

For various reasons, Netflix has decided not to use the 'persistent-usage-record' MediaKeySessionType moving forward. Before removing this feature from the latest Editor's Draft, I want to know if there's any interest outside Netflix in keeping this feature.

[xhwang-chromium]

I have not heard of any site using this yet. I could add a metric to collect information about usage in Chromium.

[mounirlamouri]

Removing the agenda label as it was discussed at the January meeting.

[xhwang-chromium]

gregwfreedman: I checked Chrome's metrics and there's no usage of persistent-usage-record session type at all so far. Also I've not heard any other interest in using/keeping this feature. Since we also discussed about this in the January meeting without any objections, I think it's safe to remove it from the latest Editor's Draft.

[chrisn]

I see that we still have tests for this feature, obviously these fail because there are no implementations. Could we remove the tests?

• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/clearkey-mp4-playback-persistent-usage-record-events.https.html
• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/clearkey-mp4-playback-persistent-usage-record.https.html
• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/clearkey-mp4-playback-retrieve-persistent-usage-record.https.html
• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/drm-mp4-playback-persistent-usage-record-events.https.html
• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/drm-mp4-playback-persistent-usage-record.https.html
• https://github.com/web-platform-tests/wpt/blob/master/encrypted-media/drm-mp4-playback-retrieve-persistent-usage-record.https.html

[xhwang-chromium]

Thanks for catching that. Yes we should remove them!