https://trac.webkit.org/changeset/201693 broke the build everywhere, see build.webkit.org for details and fix it ASAP.
This is one of the rare cases I wish somebody had jumped to rolling out, as it is unlikely I would've been paying attention at 12:30AM!
I had uncommitted changes in my Source/WebKit2, and since I couldn't use EWS/commit bot I didn't notice the patch was incomplete.
Working on it now.
Apparently that didn't fix it because of some linker error that I am not seeing locally.
I'll just roll these out for now, as I'm out of early morning time to try to fix.
Reverted r201694 for reason:
Committed r201695: <http://trac.webkit.org/changeset/201695>
Still a weird linker error on the bots (built fine locally...)
Rolled out for now, and will resolve in the original bug later.