Fix issue #3001362: API REVIEW: android.view.InputQueue.Callback

    private static final boolean DEBUG = false;

    /**

     * Interface to receive notification of when an InputQueue is associated

     * and dissociated with a thread.

     */

    public static interface Callback {

        /**

         * Called when the given InputQueue is now associated with the

         * thread making this call, so it can start receiving events from it.

         */

        void onInputQueueCreated(InputQueue queue);

        /**

         * Called when the given InputQueue is no longer associated with

         * the thread and thus not dispatching events.

         */

        void onInputQueueDestroyed(InputQueue queue);

    }