Use WTF::Lock instead of GMutex
Created attachment 336958 [details] Patch
Comment on attachment 336958 [details] Patch Thanks
Comment on attachment 336958 [details] Patch Clearing flags on attachment: 336958 Committed r230147: <https://trac.webkit.org/changeset/230147>
All reviewed patches have been landed. Closing bug.
<rdar://problem/39094307>