1. mediasession api

2. media session action types api

3. mediasessionactiondetails api

4. mediasessionactiondetails api: action

5. mediasessionactiondetails api: fastseek

6. mediasessionactiondetails api: seekoffset

7. mediasessionactiondetails api: seektime

8. media session action types api: nexttrack

9. media session action types api: pause

10. media session action types api: play

11. media session action types api: previoustrack

12. media session action types api: seekbackward

13. media session action types api: seekforward

14. media session action types api: seekto

15. media session action types api: skipad

16. media session action types api: stop

17. mediasession api: metadata

18. mediasession api: playbackstate

19. mediasession api: `setactionhandler()`

20. mediasession api: `setpositionstate()`

21. navigator api: mediasession