Remove GCMMessageCryptographer::Label

components/gcm_driver/crypto/gcm_crypto_test_helpers.cc

Index: components/gcm_driver/crypto/gcm_crypto_test_helpers.cc
diff --git a/components/gcm_driver/crypto/gcm_crypto_test_helpers.cc b/components/gcm_driver/crypto/gcm_crypto_test_helpers.cc
index 50be94932f8361ab7d10bce9572442143d8c4083..b98084e2afe293983bf64439cdc30fdb78a1e695 100644
--- a/components/gcm_driver/crypto/gcm_crypto_test_helpers.cc
+++ b/components/gcm_driver/crypto/gcm_crypto_test_helpers.cc
@@ -44,8 +44,7 @@ bool CreateEncryptedPayloadForTesting(const base::StringPiece& payload,
   const size_t salt_size = GCMMessageCryptographer::kSaltSize;
   crypto::RandBytes(base::WriteInto(&salt, salt_size + 1), salt_size);
 
-  GCMMessageCryptographer cryptographer(GCMMessageCryptographer::Label::P256,
-                                        peer_public_key, public_key,
+  GCMMessageCryptographer cryptographer(peer_public_key, public_key,
                                         auth_secret.as_string());
 
   size_t record_size;