Hacker News Reader

It's a bit of both with a healthy sprinkling of Nokia, Samsung, and quite a few others. In reality, WebKit has been driving the standards process for quite some time now (especially considering its unrivaled dominance on mobile).

Apple is just one of several companies and developers of the WebKit engine http://en.wikipedia.org/wiki/WebKit

It's Google that decides what features and protocols are implemented into Chrome. Since they control a large share of the market, it basically gives them life or death power on new features of web languages.