Merge "Fix NullPointerException when the focused window has no activity" into main

     * Returns {@code true} if the focused window is changed. Otherwise, returns {@code false}.

     */

    boolean moveFocusToAdjacentEmbeddedWindow(@NonNull WindowState focusedWindow) {

        final ActivityRecord activity = focusedWindow.getActivityRecord();

        if (activity == null) {

            return false;

        }

        final ActivityRecord mostRecentActivityInAdjacent = getMostRecentActivityInAdjacent(

                focusedWindow.getActivityRecord());

                activity);

        moveFocusToActivity(mostRecentActivityInAdjacent);

        return !focusedWindow.isFocused();