It's unused and unmaintained, and only serves to trap the clueless (yes, that would be me.) See also bug 353655 and bug 207356. (Remember to nuke the users in tools/performance/startup/ along with it.)
Created attachment 530983 [details] [diff] [review] patch
Comment on attachment 530983 [details] [diff] [review] patch Sorry for delay. Looks good
Created attachment 538171 [details] [diff] [review] patch for checkin Updated to tip and added commit message.
Created attachment 538728 [details] [diff] [review] patch for checkin Updated again.
Created attachment 546378 [details] [diff] [review] patch for checkin Updated again. I would appreciate if someone could commit this!
I think people may still be using checkin-needed keyword searches rather than combined keyword/attachment based searches. Setting checkin-needed to hopefully prevent you from having to unbitrot yet again! :-)
This broke comm-central when it landed into m-c. We would appreciate a heads up on forthcoming public interface removals like this, for future. (a bug, newsgroup post, etc.) http://hg.mozilla.org/comm-central/rev/3d95e40b74f2 as bustage fix. (we have a few js uses of this to cleanup remaining, but they are all conditional)
This is mentioned on Firefox 8 for developers; it was never documented, so that's all that's needed here. We do need to document the newer timeline service, however.