[webkit-dev] Glib download API change request

[Alex Christensen]

Since the introduction of WKDownload in 2020, I’ve been trying to make the download object creation process asynchronous in WebKit.  With 290510 at main I’ve removed the last caller of WebProcessPool::download from the Cocoa platform, but I noticed that the glib APIs have 3 places where a WebKitDownload* object is returned synchronously from an API call: webkit_web_context_download_uri, webkit_web_view_download_uri, and webkit_network_session_download_uri.  Would the maintainers of these APIs be willing to deprecate and remove them in favor of an API design closer to WKWebView’s startDownloadUsingRequest:completionHandler:?  That function is given a callback which asynchronously provides the download object to the API client.  It would also be nice if webkit_download_cancel could be reshaped to look more like WKDownload.cancel: and stop using legacyDidCancel.