MediaSessionCompat: fix crash when registerMediaEventReceiver needs a ComponentName.

Some broken implementations of Android do not accept
registerMediaEventReceiver with a PendingIntent even if it should be
supported. This CL work arounds the issue and fallbacks to ComponentName
if needed.

BUG: 24051980
Change-Id: Ia83bc2bcdf5eda716d21809e07cac1420e6549b9
2 files changed