WorkerNavigator property should exist on WorkerGlobalScope:
Fixing this gets the number of failures on http://w3c-test.org/workers/interfaces.worker from 34 to 23.
Created attachment 280932 [details]
Created attachment 280933 [details]
Comment on attachment 280933 [details]
Clearing flags on attachment: 280933
Committed r201899: <http://trac.webkit.org/changeset/201899>
All reviewed patches have been landed. Closing bug.