rails/rails — pull request #16424 by gregors (2014-08-07 20:23:32+00:00)
Title: remove dead file_watcher code

The rest of file watcher was deleted as part of f7538808d466b756df15ac3f27ca08370f7a189c this seemed to stick around by accident. It's showing up in docs even though there isn't anyway to access or use it.