<rdar://105752952> We allocate rendering resources from multiple threads, so we need to use the thread safe allocator.
Pull request: https://github.com/WebKit/WebKit/pull/12226
Committed 262486@main (30500262a0f1): <https://commits.webkit.org/262486@main> Reviewed commits have been landed. Closing PR #12226 and removing active labels.
Committed 259548.561@safari-7615-branch (ad4886e62132): <https://commits.webkit.org/259548.561@safari-7615-branch> Reviewed commits have been landed. Closing PR #521 and removing active labels.