Now that the minimum timer interval can be controlled per page, the Chromium code in the WebKit repository which refers to it needs a small cleanup.
Created attachment 83008 [details] Patch
Comment on attachment 83008 [details] Patch R=me
Committed r79038: <http://trac.webkit.org/changeset/79038>
It's possible this caused https://bugs.webkit.org/show_bug.cgi?id=54885 . Still investigating.