Move protocol buffer dependent functions from crypto_utils to anonymous_tokens_pb_openssl_converters. This CL doesn't add any new code other than a few tests in anonymous_tokens_pb_openssl_converters_test.cc.

PiperOrigin-RevId: 541978821

build/source_list.json

diff --git a/build/source_list.json b/build/source_list.json
index f30cdfa..8423361 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -1561,6 +1561,7 @@
   ],
   "blind_sign_auth_hdrs": [
     "quiche/blind_sign_auth/anonymous_tokens/cpp/client/anonymous_tokens_rsa_bssa_client.h",
+    "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/anonymous_tokens_pb_openssl_converters.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/blind_signer.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/blinder.h",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/constants.h",
@@ -1583,6 +1584,7 @@
   ],
   "blind_sign_auth_srcs": [
     "quiche/blind_sign_auth/anonymous_tokens/cpp/client/anonymous_tokens_rsa_bssa_client.cc",
+    "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/anonymous_tokens_pb_openssl_converters.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/crypto_utils.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blind_signer.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blinder.cc",
@@ -1598,6 +1600,7 @@
   ],
   "blind_sign_auth_tests_srcs": [
     "quiche/blind_sign_auth/anonymous_tokens/cpp/client/anonymous_tokens_rsa_bssa_client_test.cc",
+    "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/anonymous_tokens_pb_openssl_converters_test.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/at_crypto_utils_test.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blind_signer_test.cc",
     "quiche/blind_sign_auth/anonymous_tokens/cpp/crypto/rsa_blinder_test.cc",