resources/lib/ooui/themes/wikimediaui/images/icons/speechBubbleAdd-ltr-progressive.svg
<?xml version="1.0" encoding="UTF-8"?><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><title>
add speech bubble
</title><path fill="#36c" d="M3 1a2 2 0 0 0-2 2v16l4-4h12a2 2 0 0 0 2-2V3a2 2 0 0 0-2-2zm12 8h-4v4H9V9H5V7h4V3h2v4h4z"/></svg>