chromium/ui/webui/resources/images/icon_arrow_drop_up_cr23.svg

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="none" viewBox="0 0 16 16"><g clip-path="url(#a)"><path fill="#000" d="M5 9h6L8 6 5 9Z"/></g><defs><clipPath id="a"><path fill="#fff" d="M0 16h16V0H0z"/></clipPath></defs></svg>