Codebase Browser
chromium
Go to App

chromium/content/test/data/accessibility/aria/aria-live.html 

<!DOCTYPE html>
<!--
@MAC-ALLOW:AXARIALive
@WIN-ALLOW:live*
@WIN-ALLOW:container*
@WIN-ALLOW:BUSY*
@BLINK-ALLOW:busy*
@BLINK-ALLOW:live*
@BLINK-ALLOW:container*
@AURALINUX-ALLOW:busy*
@AURALINUX-ALLOW:container*
@AURALINUX-ALLOW:live*
-->
<html>
  <body>
    <div tabindex=0 role="marquee" aria-live="off"></div>
    <div tabindex=1 role="marquee" aria-live="polite"></div>
    <div tabindex=2 role="marquee" aria-live="assertive"></div>

    <!-- Some roles such as "alert" have an implicit live status of assertive. -->
    <div tabindex=3 role="alert"></div>
  </body>
</html>