AudioManager.registerMediaButtonEventReceiver maps to
AudioService.registerMediaButtonIntent
AudioManager.registerRemoteControlClient maps to
AudioService.registerRemoteControlClient
To use RemoteControlClient, an application needs to have
first registered its button event receiver. Therefore
registerMediaButtonEventReceiver() needs to have
completed registration when returning, otherwise the
RemoteControlClient registration can sometimes fail due
to the lack of association between the button event
receiver and the RemoteControlClient.
Bug 8315459
Change-Id: I82c196c3f21a65e38bad275085ed4f9ec0ec60dd