WebKit for Windows?

Sorry for stupid question but I’m confused.
Is there a browser with WebKit for Windows that uses webGL? I’ve found WebKit build with webGL but I it doesn’t work with webGL demos.

Not yet – see the comments on this blog post for the regular WebKit build (the one that runs in Safari): http://webkit.org/blog/603/webgl-now-available-in-webkit-nightlies/comment-page-1/#comment-25225

It looks like WebGL is enabled in the Chrome code, but a version with that code hasn’t been released to their dev channel yet.