ThreadSafeObjectHeap lacks add and remove operations Currently it has "add if not present" and "remove if present". This is suboptimal because it has to support the remove arriving before add, but "if present" part makes leaked entries impossible to avoid.
<rdar://problem/110169358>
Pull request: https://github.com/WebKit/WebKit/pull/14734
Committed 265063@main (ecb76a449ffa): <https://commits.webkit.org/265063@main> Reviewed commits have been landed. Closing PR #14734 and removing active labels.