[sanxiyn]

This is incorrect. Conflict was over multiprocess architecture, where Google added it as a WebKit port and Apple did a proper redesign and produced WebKit2. WebKit is still extremely portable and non-Apple platforms are first class.

[dragonwriter]

I thought platform support was part of it, too, but I must have been mixing up the abandonment of non-Apple-platform Safari with the Blink/WebKit fork.