Seems like CSS_DEVICE_ADAPTATION isn't going anywhere. We should remove the code.
CSS WG resolved to remove @viewport: https://github.com/w3c/csswg-drafts/issues/4766
Created attachment 390537 [details]
Comment on attachment 390537 [details]
Clearing flags on attachment: 390537
Committed r256477: <https://trac.webkit.org/changeset/256477>
All reviewed patches have been landed. Closing bug.