While the setting is only checked at runtime in WebCore, this setting should also be on by default. Eventually this should no longer be an experimental feature.
Created attachment 330854 [details] Patch
Comment on attachment 330854 [details] Patch Whoops! r=me.
Hooray for having two sources of knowledge about what features are turned on! :-(
Comment on attachment 330854 [details] Patch Thanks, Brent!
<rdar://problem/36392694>
<rdar://problem/36392689>
Committed r226669: <https://trac.webkit.org/changeset/226669>