We're testing the behavior of lock contention (i.e. when threads contend), not whether the locks are happy (contented).
Created attachment 258769 [details] the fix.
Comment on attachment 258769 [details] the fix. r=me
Comment on attachment 258769 [details] the fix. Clearing flags on attachment: 258769 Committed r188309: <http://trac.webkit.org/changeset/188309>
All reviewed patches have been landed. Closing bug.