The OnPopupDestroyedDelegate will be called when the [!:ChromiumHostControl] is to be
removed from it's parent.
When the OnPopupDestroyedDelegate is called you must remove/dispose of the [!:ChromiumHostControl].
Namespace:CefSharp.WinForms.Handler Assembly:
CefSharp.WinForms (in CefSharp.WinForms.dll) Version: 94.4.20.0 (94.4.20.0)