While www-client/google-chrome is capable of being slotted, the build for www-client/chromium disables this (it is guarded in GN by `is_chrome_branded` and some defines that are set as a result. There is no reason to do so, other than an upstream recommendation to track Stable. Since we are not _just_ tracking stable, and there is a potential for the profile to be corrupted if switching from (e.g.) dev to stable, we really should just bite the bullet and properly slot Chromium, complete with per-channel desktop entries, binary/wrapper symlinks, and This will require some upstream work, though I have a WIP branch that is 80%* of the way there. * I have no idea if it's actually 80%