Issue by eseidelGoogle
Tuesday Jul 28, 2015 at 18:25 GMT
Originally opened as https://github.com/flutter/engine/issues/316

This appears to be how:
http://stackoverflow.com/questions/1082374/making-a-checkbox-toggle-the-dock-icon-on-and-off

Chromium's ContentShell may already have a solution for this, @dpranke would know.