docs/static/experimental.idle.html

<div id="pageData-name" class="pageData">experimental.chrome.idle</div>

<p>
The <code>idle</code> API is no longer experimental;
it's supported!
You can read all about it at its new home:
</p>

<blockquote>
<a href="idle.html">chrome.idle</a>
</blockquote>