Support building BoringSSL with NSS certificates.

crypto/rsa_private_key.h

Index: crypto/rsa_private_key.h
diff --git a/crypto/rsa_private_key.h b/crypto/rsa_private_key.h
index 221e341a6fe8da40b9753dc58df91598a53fd61a..8e1389439347eadb6510cf670fa089d14acc95fa 100644
--- a/crypto/rsa_private_key.h
+++ b/crypto/rsa_private_key.h
@@ -180,7 +180,12 @@ class CRYPTO_EXPORT RSAPrivateKey {
   static RSAPrivateKey* CreateFromPrivateKeyInfo(
       const std::vector<uint8>& input);
 
-#if defined(USE_NSS)
+#if defined(USE_OPENSSL)
+  // Create a new instance from an existing EVP_PKEY, taking a
+  // reference to it. |key| must be an RSA key. Returns NULL on
+  // failure.
+  static RSAPrivateKey* CreateFromKey(EVP_PKEY* key);
+#elif defined(USE_NSS)
   // Create a new random instance in |slot|. Can return NULL if initialization
   // fails.  The created key is permanent and is not exportable in plaintext
   // form.
@@ -216,12 +221,6 @@ class CRYPTO_EXPORT RSAPrivateKey {
   static RSAPrivateKey* FindFromPublicKeyInfoInSlot(
       const std::vector<uint8>& input,
       PK11SlotInfo* slot);
-#elif defined(USE_OPENSSL)
-  // Create a new instance from an existing EVP_PKEY, taking a
-  // reference to it. |key| must be an RSA key. Returns NULL on
-  // failure.
-  static RSAPrivateKey* CreateFromKey(EVP_PKEY* key);
-
 #endif
 
 #if defined(USE_OPENSSL)