chromium/net/data/ssl/certificates/client_4.key

-----BEGIN EC PRIVATE KEY-----
MHcCAQEEIAK4v0jF1vvMR4iTvXwB4m/KSIllNDTEufAy/oXSanFHoAoGCCqGSM49
AwEHoUQDQgAEhWRFJ+xiDW79ytVAhbV0/BaTIytPuMebZAU78Qlb0qU7LC4uzWAe
kl7i52305fpCCcx13l3AKDqmYZzU2NoxqA==
-----END EC PRIVATE KEY-----