Move headers to keep from a HTTPHeaderNameSet to an OptionSet. This is more efficient.
Created attachment 380967 [details] Patch
Created attachment 380977 [details] Patch
The commit-queue encountered the following flaky tests while processing attachment 380977 [details]: imported/w3c/web-platform-tests/websockets/bufferedAmount-unchanged-by-sync-xhr.any.worker.html bug 202003 (author: youennf@gmail.com) The commit-queue is continuing to process your patch.
Comment on attachment 380977 [details] Patch Clearing flags on attachment: 380977 Committed r251155: <https://trac.webkit.org/changeset/251155>
All reviewed patches have been landed. Closing bug.
<rdar://problem/56306776>