chromium/ash/webui/camera_app_ui/resources/images/camera_shutter_photo_start.svg

<svg width="60" height="60" viewBox="0 0 60 60" fill="none" xmlns="http://www.w3.org/2000/svg">
  <circle cx="30" cy="30" r="30" fill="var(--secondary-color)"/>
  <circle cx="30" cy="30" r="25"/>
</svg>