[Strom]

Revocations can be checked via OCSP. [1] Chrome probably has an alternative system as well.

[1] http://en.wikipedia.org/wiki/Online_Certificate_Status_Proto...

[robertduncan]

Chrome uses CRLsets:

https://twitter.com/agl__/status/409687123659214851 http://dev.chromium.org/Home/chromium-security/crlsets