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

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
  <path  d="M8.8 5.15l3.81 4.01.99-1.02L8 2.4 2.4 8.14l.99 1.02L7.2 5.15v8.45h1.6z"/>
</svg>