Add patch for tvview callback run in single thread.

    private static final Object sMainTvViewLock = new Object();

    private static WeakReference<TvView> sMainTvView = NULL_TV_VIEW;

    private final Handler mHandler = new Handler();

    private Handler mHandler = new Handler();

    private Session mSession;

    private SurfaceView mSurfaceView;

    private Surface mSurface;

        mCallback = callback;

    }

    /**

     * Sets the handler to be invoked when an event is dispatched to this TvView.

     * If handler is not set by this function, TvView will use its default handler.

     *

     * @param handler The handler to handle events.

     * @hide

     */

    public void setHandler(@NonNull Handler handler) {

        mHandler = handler;

    }

    /** @hide */

    public Session getInputSession() {

        return mSession;