
This provides an (unstable) API for apps to broadcast session extras Bundle to all connected controllers and set the extras in the legacy session. Similar to the custom layout, the extras Bundle is not part of the Media3 session state. This means that when a Media3 controller connects to the session after the broadcast, the extras needs to be sent to that controller in `MediaSession.Callback.onPostConnect(MediaSession session, ControllerInfo controller)`. PiperOrigin-RevId: 451871731
Session test common module
Provides common components for use by session tests.