WebPageProxyIdentifier parameter of WebPageProxy::CreateNewPage() should not be Optional.
The method extracts the value of Optional<WebPageProxyIdentifier> unconditionally, so it's clear it doesn't need to be Optional<>.
Created attachment 404695 [details]
Committed r264602: <https://trac.webkit.org/changeset/264602>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 404695 [details].