Merge "Introduce ServiceImpl for MediaSessionService"

    private final ControllerStub mController;

    private final SessionStub mSession;

    private final SessionCb mSessionCb;

    private final MediaSessionService mService;

    private final MediaSessionService.ServiceImpl mService;

    private final Context mContext;

    private final Object mLock = new Object();

    private String mMetadataDescription;

    public MediaSessionRecord(int ownerPid, int ownerUid, int userId, String ownerPackageName,

            SessionCallbackLink cb, String tag, MediaSessionService service, Looper handlerLooper) {

            SessionCallbackLink cb, String tag, MediaSessionService.ServiceImpl service,

            Looper handlerLooper) {

        mOwnerPid = ownerPid;

        mOwnerUid = ownerUid;

        mUserId = userId;