Maybe. I think this single action cements Google as a bad actor and pulls the "open source" rug out from under Chrome. This ONE thing will be the defining factor in me dumping Google moving forward.
Also, I would bet Google would do a few "neccessary" changes in the bookmark parts over the next releases, just to make your patch not work.
And, of course, that makes perfect sense for Google. Chrome is no longer the scrappy insurgent. It's the king of the hill now, so it can start putting the fences up against competitors.