The m_cssVariablesEnabled class member in Page Settings is not initialized in the class constructor. This needs to be fixed.
Created attachment 149904 [details] Patch
For realz? Shame on me.
Comment on attachment 149904 [details] Patch Clearing flags on attachment: 149904 Committed r121432: <http://trac.webkit.org/changeset/121432>
All reviewed patches have been landed. Closing bug.