tree d777cb581a639be24aca24d5c8a2d44d1b0319db
parent 465d154154ff184acf343c5aaa0e011603cf2da5
author elburrito <elburrito@google.com> 1710187608 -0700
committer Copybara-Service <copybara-worker@google.com> 1710187677 -0700

BlindSignAuth: Refactoring to support future Android BlindSignMessageInterface impl.

- Rename BlindSignHttpInterface to BlindSignMessageInterface
- Change BSA::GetTokens oauth_token parameter to std::optional<std::string>, since Android BSA callers will not have an OAuth token to pass in
- Change BlindSignMessageInterface::DoRequest authorization_header to std::optional<std::string>
- Stop setting oauth_token field in AuthAndSignRequest (field is unused for IP Protection and will be deprecated)

PiperOrigin-RevId: 614767846