public function render_content_to_delete_everything()
    {
        VideoLibrary_DatabaseHelper::delete_all_external_videos_in_frame_grabbing_queue();
        $back_a = new HTMLTags_A('Back to the Queue');
        $back_href = $this->get_current_base_url();
        $back_a->set_href($back_href);
        $back_a_str = $back_a->get_as_string();
        echo <<<HTML
<h2>Remove all External Videos from the Frame Grabbing Queue</h2>
<p>
        All videos have been removed and the queue has been emptied.
</p>
<ul>
        <li>
        {$back_a_str}
        </li>
</ul>
HTML;
    }