WebCrypto key serialization needs a master key, and WebKit2 clients should have a say in what it is.
Created attachment 224024 [details]
Comment on attachment 224024 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=224024&action=review
> + // Version 1.
> + WKContextCopyWebCryptoMasterKeyCallback copyWebCryptoMasterKey;
I don't think you need to update this struct.