Needed this to access my home server without getting a warning every. damn. time. in Chromium
Peter van der Does:
Google Chrome in Linux doesn’t have a SSL certificate manager, it relies on the NSS Shared DB. In order to add SSL certificates to the database you will have to use the command line. I will explain how you can add the CAcert certificates and a very easy way to add self-signed certificates.
http://blog.avirtualhome.com/adding-ssl-certificates-to-google-chrome-linux-ubuntu/