OnSelectClientCertificate not supported by chrome-runtime

[jolting]

Describe the bug
OnSelectClientCertificate does not work with chrome-runtime. Now that alloy is not supported there isn't any option to enable OnSelectClientCertificate. When using chrome-runtime when visiting an mtls protected URL a certificate selection dialog appears. Previously when using alloy OnSelectClientCertificate would be called.

To Reproduce
Steps to reproduce the behavior:

1. One Windows install a client certificate in the Windows certificate store
2. Start cefclient with the --ssl-client-certificate=<certificate subject name> option
3. Visit a url that requests and mtls certificate.

Chrome will popup a certificate selection dialog.

Expected behavior
OnSelectClientCertificate should be called and the certificate matching the certificate subject name should be used.

Versions (please complete the following information):

• OS: Windows 11
• CEF Version: 128.4.9

[jolting]

Does ChromeContentBrowserClientCef just need the SelectClientCertificate implementation from the former AlloyContentBrowserClient or is it more complex than that?

[magreenblatt]

Related PR: https://bitbucket.org/chromiumembedded/cef/pull-requests/819