When running the iOS Mail app with TOT WebKit, WebProcessProxy::allProcesses() is called on the main thread, but because by then the Web thread has been initialized, the isMainThread() assertion fails. Perhaps allProcesses() should instead assert RunLoop::isMain().
Created attachment 344426 [details] Patch
The commit-queue encountered the following flaky tests while processing attachment 344426 [details]: media/media-fullscreen-return-to-inline.html bug 187398 (authors: graouts@apple.com, mcatanzaro@igalia.com, and ryanhaddad@apple.com) The commit-queue is continuing to process your patch.
Comment on attachment 344426 [details] Patch Clearing flags on attachment: 344426 Committed r233582: <https://trac.webkit.org/changeset/233582>
All reviewed patches have been landed. Closing bug.
<rdar://problem/41900494>