And of course it is basic enough that it should be in Chrome by default. Unless I am missing something, while there are various options for 'allowing' cookies, there are no methods to keep a white list of sites and still allow all other sites to place cookies (and function)
I found this, which eventually lead me to the above links
I like the ability in Firefox to allow unlimited cookie "activity," but then have the browser delete everything except for a few sites that are on a whitelist. I would love to see this option available in a future version of Chrome. The whitelist would let me keep cookies for forums that I frequent. "Blocking all cookies" just won't let certain sites function; deleting all cookies via the "Clear browsing data" option wipes them all out.