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

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  <path fill="#5f6368" d="M16 5.41L14.59 4 10 8.59 5.41 4 4 5.41 8.59 10 4 14.59 5.41 16 10 11.41 14.59 16 16 14.59 11.41 10z"/>
</svg>