The viewport fit feature is no longer experimental and having it enabled by default is desirable, so it should no longer be in the experimental features list.
Created attachment 321654 [details] Patch
Comment on attachment 321654 [details] Patch I am rubber stamping this. Hope everyone agrees.
Comment on attachment 321654 [details] Patch Clearing flags on attachment: 321654 Committed r222438: <http://trac.webkit.org/changeset/222438>
All reviewed patches have been landed. Closing bug.
<rdar://problem/34692966>