CHALLENGE_OPTION_NONE  361 chrome/browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api.cc       chromeos::attestation::CHALLENGE_OPTION_NONE,
CHALLENGE_OPTION_NONE  507 chrome/browser/extensions/api/enterprise_platform_keys_private/enterprise_platform_keys_private_api.cc           chromeos::attestation::CHALLENGE_OPTION_NONE,