r206949 changed to return value of navigator.language from en-us to en-US in order to match other browsers and w3c spec. So ewk_context_preferred_languages needs to change the expected result as well.
Created attachment 291104 [details] Patch
Comment on attachment 291104 [details] Patch Clearing flags on attachment: 291104 Committed r206997: <http://trac.webkit.org/changeset/206997>
All reviewed patches have been landed. Closing bug.