Commits
rsgowman authored and GitHub committed 308acc09bfa
Change CredentialsProvider::TokenListener to use StatusOr<Token> (#945) * Change CredentialsProvider::TokenListener to use StatusOr Rather than a token plus error code/msg. * Eliminate the concept of an invalid Token Instead, we'll just use StatusOr<Token>. Note that unauthenticated tokens are handled as a special case; they're created via: Token::Unauthenticated() and are otherwise "valid", though attempting to retrieve the raw token on one of these tokens will cause an assertion failure.