In Chrome's implementation are the cache, cookiejar, and history all kept completely separate? For example if I go to foo.com and inside that it loads a facebook script in an iframe could it get all the normal facebook cookies or would it be blank? Which "site" would the iframe be?
Back in the day (Around when I ported chrome to Linux for a time context) I wrote up a spec and implemented a browser that did site data compartmentalization. Data leaks from cookies, history and especially cache were not possible because the data just wasn't there to be leaked. It was a pretty cool design that along with per site settings and split view search was definitely ahead of its time. Alas I was forbidden from working on it by my employer at the time and have been watching for some of the features to appear in other browsers since.
https://benjamin-meyer.blogspot.com/2009/08/next-generation-...