chromium/content/test/data/accessibility/html/object-image-error.html

<!--
@AURALINUX-WAIT-FOR:name='Fallback'
@AURALINUX-ALLOW:tag:*
@BLINK-WAIT-FOR:name='Fallback'
@BLINK-ALLOW:htmlTag='slot'
@NO-LOAD-EXPECTED:broken.jpg
-->
<div>
    <object data="./broken.jpg">
        Fallback
    </object>
</div>