1. mediasession api

2. mediasession api: metadata

3. mediasession api: playbackstate

4. mediasession api: `setactionhandler()`

5. mediasession api: `setactionhandler()`: action handler callback

6. mediasession api: `setactionhandler()`: action handler callback: `enterpictureinpicturereason` callback option

7. mediasession api: `setactionhandler()`: `"enterpictureinpicture"` type

8. mediasession api: `setactionhandler()`: `"hangup"` type

9. mediasession api: `setactionhandler()`: `"nextslide"` type

10. mediasession api: `setactionhandler()`: `"nexttrack"` type

11. mediasession api: `setactionhandler()`: `"pause"` type

12. mediasession api: `setactionhandler()`: `"play"` type

13. mediasession api: `setactionhandler()`: `"previousslide"` type

14. mediasession api: `setactionhandler()`: `"previoustrack"` type

15. mediasession api: `setactionhandler()`: `"seekbackward"` type

16. mediasession api: `setactionhandler()`: `"seekforward"` type

17. mediasession api: `setactionhandler()`: `"seekto"` type

18. mediasession api: `setactionhandler()`: `"skipad"` type

19. mediasession api: `setactionhandler()`: `"stop"` type

20. mediasession api: `setactionhandler()`: `"togglecamera"` type

21. mediasession api: `setactionhandler()`: `"togglemicrophone"` type

22. mediasession api: `setcameraactive()`

23. mediasession api: `setmicrophoneactive()`

24. mediasession api: `setpositionstate()`

25. mediasession api: setscreenshareactive

26. navigator api: mediasession