Once bug #243492 is done, we can deprecate the following: - webkit_user_content_manager_register_script_message_handler() - webkit_user_content_manager_register_script_message_handler_in_world() - WebKitUserContentManager::script-message-received In the case of building with GTK4, the public API is not yet considered stable, so we could even completely remove these instead of marking them as deprecated.
Pull request: https://github.com/WebKit/WebKit/pull/6832
https://github.com/WebKit/WebKit/pull/6832#issuecomment-1423875299