Protect StorageManager::LocalStorageNamespace::m_storageAreaMap with a mutex
Created attachment 373036 [details] Patch
<rdar://problem/52098995>
https://bugs.webkit.org/show_bug.cgi?id=199278 may solve this?
Given that bug 199278 removes didDestroyStorageArea, I think this patch is obsolete. (Also, given the hang mentioned in bug 199278, this patch would probably cause more hangs.)
Agreed. That patch is what we should do instead