protected override bool OnCertificateError(CefBrowser browser, CefErrorCode certError, string requestUrl, CefSslInfo sslInfo, CefRequestCallback callback)
{
var e = new CertificateErrorEventArgs(certError, requestUrl, sslInfo, callback);
_owner.InvokeIfRequired(() => _owner.OnCertificateError(e));
return(!e.CancelRequestImmediately);
}