Because that would be absolutely nuclear for Chrome's PR. There are a handful of places where Chrome needs to shine and then they obviously watch out for those

Because that would be absolutely nuclear for Chrome's PR. There are a handful of places where Chrome needs to shine and then they obviously watch out for those more. The depths of the codebase look much the contrary. With Firefox, the entire codebase has to shine, because someone will find it and hold Mozilla to a far higher standard. A bug in the update process that resets search engines is then only one of many things that they're supposed to watch out for.