chromium/ui/file_manager/file_manager/foreground/images/common/arrow_down_small.svg

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
  <path d="M7.2 10.85L3.39 6.84 2.4 7.86 8 13.6l5.6-5.74-.99-1.02-3.81 4.01V2.4H7.2z"/>
</svg>