Temporarily work around this problem by allowing WindowServer connections when querying decoder availability.
<rdar://problem/39613400>
Created attachment 338485 [details] Patch
Comment on attachment 338485 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=338485&action=review > Source/WebCore/platform/graphics/avfoundation/CDMPrivateMediaSourceAVFObjC.mm:66 > + CGSSetDenyWindowServerConnections(false); Don't we need to call 'CGSSetDenyWindowServerConnections(true)' again somewhere?
Per Arne: Do we still need this patch?