Is there a tutorial (for multiple browsers/platforms) for browser users to manually initiate downloading and processing of the latest CRL? Is this even exposed

Is there a tutorial (for multiple browsers/platforms) for browser users to manually initiate downloading and processing of the latest CRL? Is this even exposed by most modern browsers, i.e. as part of the "clear cache" functionality? If so, I'd want to tell my [self/family/friends/coworkers] to do this in the coming weeks to minimize the amount of time they might happen to send private information to a MITM attacking, say, an e-commerce site. Specifically, I'd be most interested for such a walkthrough for Google Chrome on OS X, which most people I know use.