Merge "Remove redundant Nullable annotation for applyDisplayChangeIfNeeded method." into main

     * Applies the new configuration for the changed displays. Returns the activities that should

     * check whether to deliver the new configuration to clients.

     */

    @Nullable

    void applyDisplayChangeIfNeeded(@NonNull ArraySet<WindowContainer<?>> activitiesMayChange) {

        for (int i = mParticipants.size() - 1; i >= 0; --i) {

            final WindowContainer<?> wc = mParticipants.valueAt(i);