[css-grid] Enable CSS Grid Layout by default
https://bugs.webkit.org/show_bug.cgi?id=167578

Reviewed by Michael Catanzaro.

Now that Safari 10.1 is shipping CSS Grid Layout it seems safe to enable the feature by default:
https://developer.apple.com/library/prerelease/content/releasenotes/General/WhatsNewInSafari/Articles/Safari_10_1.html

* Shared/WebPreferencesDefinitions.h: Remove Grid Layout from the list of experimental flags and enable it by default.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@211415 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2 files changed