It doesn't seem to be used. There hasn't been any "real" changes to this code since we migrated to hg. All changes are global changes that happened to touch urichecker.cpp/h as well. http://mxr.mozilla.org/mozilla-central/search?string=urichecker The only risk here is that addons might use it. If that's the case we can always put it back.

Comment on attachment 8684690 [details] [diff] [review] Patch to fix thanks

https://hg.mozilla.org/integration/mozilla-inbound/rev/a5d633bb299c73ae5341550453798e82536fce30 Bug 1222829: Remove URIChecker. r=mcmanus

Is there a way of checking for valid links other than using the removed code? https://dxr.mozilla.org/comm-central/search?q=urichecker&redirect=false

(In reply to Ian Neal from comment #5) > Is there a way of checking for valid links other than using the removed code? > https://dxr.mozilla.org/comm-central/search?q=urichecker&redirect=false If by valid links you mean valid URLs, I think creating a URL and seeing if the result is NS_OK should work. I think calling NS_NewURI is the preferred way of creating a URL. If you need it to be a URL (instead of a URI) check if the result QIs to nsIStandardURL. If you want to check if the link is loadable, you can do something similar to what the code used to do - open a channel to the URL and see if it loads.