I ran the tests skipped with the comment "WebKitTestRunner needs to sanitize file urls in the output" and they all ran successfully with WebKitTestRunner on my Mac. I'm not sure when this was fixed, but I propose they be unskipped.
Created attachment 201654 [details]
Comment on attachment 201654 [details]
Clearing flags on attachment: 201654
Committed r150058: <http://trac.webkit.org/changeset/150058>
All reviewed patches have been landed. Closing bug.