Use CallOnMainThreadAndWait() instead of CallAndMainThread() + BinarySemaphore.
Created attachment 422974 [details] Patch
Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See https://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API
Comment on attachment 422974 [details] Patch r=me
Comment on attachment 422974 [details] Patch Clearing flags on attachment: 422974 Committed r274306 (235200@main): <https://commits.webkit.org/235200@main>
All reviewed patches have been landed. Closing bug.
<rdar://problem/75337310>