Rename USE_NSS to USE_NSS_CERTS.

net/quic/crypto/aead_base_encrypter.h

Index: net/quic/crypto/aead_base_encrypter.h
diff --git a/net/quic/crypto/aead_base_encrypter.h b/net/quic/crypto/aead_base_encrypter.h
index 810874437323646a0e3589205ecb4dafeffd0ece..86db32c0253b69d0dc6db7f454ef73e80b7a0e7a 100644
--- a/net/quic/crypto/aead_base_encrypter.h
+++ b/net/quic/crypto/aead_base_encrypter.h
@@ -71,9 +71,9 @@ class NET_EXPORT_PRIVATE AeadBaseEncrypter : public QuicEncrypter {
     unsigned int len;
     union {
       CK_GCM_PARAMS gcm_params;
-#if !defined(USE_NSS)
-      // USE_NSS means we are using system NSS rather than our copy of NSS.
-      // The system NSS <pkcs11n.h> header doesn't define this type yet.
+#if !defined(USE_NSS_CERTS)
+      // USE_NSS_CERTS implies we are using system NSS rather than our copy of
+      // NSS. The system NSS <pkcs11n.h> header doesn't define this type yet.
       CK_NSS_AEAD_PARAMS nss_aead_params;
 #endif
     } data;