A patch was submitted in Bug #135925 for these tests, but they are still failing.
These tests are all passing for me locally on Mac OS X 10.9.5. I'm going to remove the tests from TestExpectations for now, to see if they start failing on the bots and give me more data on what could be wrong.
Created attachment 241032 [details]
Remove tests from test expectations
Comment on attachment 241032 [details]
Clearing flags on attachment: 241032
Committed r175633: <http://trac.webkit.org/changeset/175633>
All reviewed patches have been landed. Closing bug.