https://codereview.chromium.org/2323393004/patch/60001/70037?context=10&column_width=80&tab_spaces=8
third_party/WebKit/Source/modules/remoteplayback/BUILD.gn - Issue 2323393004: Complete removing...
third party
https://developer.mozilla.org/en-US/docs/Web/API/RemotePlayback/connecting_event
RemotePlayback: connecting event - Web APIs | MDN
The connecting event of the RemotePlayback interface fires when the user agent initiates remote playback.
event webconnectingapismdn
https://developer.mozilla.org/en-US/docs/Web/API/RemotePlayback/disconnect_event
RemotePlayback: disconnect event - Web APIs | MDN
The disconnect event of the RemotePlayback interface fires when the user agent disconnects from the remote device.
event webdisconnectapismdn