Well, Mozilla found a solution. And that's the brute-force solution. Just throw human code-reviewers at the problem until it solves itself. I'm guessing Google

Well, Mozilla found a solution. And that's the brute-force solution. Just throw human code-reviewers at the problem until it solves itself. I'm guessing Google would have more extensions to review than Mozilla and could not rely as much on volunteers as Mozilla can, but Google also has something like an order of magnitude more money, so I'm sure they could work something out, if they really wanted to.