Some details here: http://techcrunch.com/2013/05/16/google-has-already-removed-8-8m-lines-of-webkit-code-from-blink/ http://techcrunch.com/2013/05/16/google-ha

Some details here: http://techcrunch.com/2013/05/16/google-has-already-removed-8-8m-lines-of-webkit-code-from-blink/ http://techcrunch.com/2013/05/16/google-has-already-removed-... As I understand it, Google and Apple did things like sandboxing in different ways for Chrome and Safari, and so there was a lot of code in both projects that could be ripped out once the alternate way of doing things didn't need to be supported any more.