Remove GCMMessageCryptographer::Label

components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc

Index: components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc
diff --git a/components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc b/components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc
index 22b2261c35851abd492450ca87cdd919aa5e2157..43184e274cb2c12daa9da94e1eb74e8406ea5672 100644
--- a/components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc
+++ b/components/gcm_driver/crypto/gcm_encryption_provider_unittest.cc
@@ -496,8 +496,7 @@ void GCMEncryptionProviderTest::TestEncryptionRoundTrip(
   // Encrypts the |kExampleMessage| using the generated shared key and the
   // random |salt|, storing the result in |record_size| and the message.
   GCMMessageCryptographer cryptographer(
-      GCMMessageCryptographer::Label::P256, pair.public_key(),
-      server_pair.public_key(), auth_secret);
+      pair.public_key(), server_pair.public_key(), auth_secret);
 
   ASSERT_TRUE(cryptographer.Encrypt(kExampleMessage, shared_secret, salt,
                                     &record_size, &message.raw_data));