It seems to me that they are not used at all.

@jduell do you recall what these prefs are doing? It seems like some ancient options in about:preferences that we removed a long time ago.

I'm not a cookie person, sorry.

(In reply to Honza Bambas (:mayhemer) from comment #2) > I'm not a cookie person, sorry. I'm a cookie, so maybe I can help. * network.cookie.lifetime.enabled was migrated all the way back in 2004. Bug 233339 https://developer.mozilla.org/en-US/docs/Mozilla/Cookies_Preferences https://dxr.mozilla.org/mozilla-release/source/extensions/cookie/nsCookiePermission.cpp#49 * network.cookie.lifetime.days Bug 1457170 plans its removal from about:config, where it still exists and supposedly still works. Bug 232744 is a previous failed attempt at removal. Bug 1231319 requests it be added back to the UI. "only used if network.cookie.lifetimePolicy is set to 3 Sets the number of days that the lifetime of cookies should be limited to." https://developer.mozilla.org/en-US/docs/Mozilla/Cookies_Preferences$revision/38525 https://dxr.mozilla.org/mozilla-release/source/modules/libpref/init/all.js#2346 :jduell hasn't responded in 4 months. :mconnor, anything to add?

Comment on attachment 8996620 [details] [diff] [review] cookie_lifetime.patch Review of attachment 8996620 [details] [diff] [review]: ----------------------------------------------------------------- nit: update the commit message to reflect the prefs we are actually removing in this patch.

Pushed by amarchesini@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/fa91df9c92b7 Get rid of network.cookie.prefsMigrated, network.cookie.lifetime.enabled and network.cookie.lifetime.behavior prefs, r=valentin