Add ECPrivateKey for Elliptic Curve keypair generation.

crypto/scoped_nss_types.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CRYPTO_SCOPED_NSS_TYPES_H_
 #define CRYPTO_SCOPED_NSS_TYPES_H_
 #pragma once
 
 #include <keyhi.h>
 #include <nss.h>
 #include <pk11pub.h>
+#include <plarena.h>
 
 #include "base/memory/scoped_ptr.h"
 
 namespace crypto {
 
 template <typename Type, void (*Destroyer)(Type*)>
 struct NSSDestroyer {
   void operator()(Type* ptr) const {
     if (ptr)
       Destroyer(ptr);
@@ skipping 24 matching lines @@
     SECKEYPrivateKey, NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
     ScopedSECKEYPrivateKey;
 typedef scoped_ptr_malloc<
     SECAlgorithmID, NSSDestroyer1<SECAlgorithmID,
                                   SECOID_DestroyAlgorithmID,
                                   PR_TRUE> > ScopedSECAlgorithmID;
 typedef scoped_ptr_malloc<
     SECItem, NSSDestroyer1<SECItem,
                            SECITEM_FreeItem,
                            PR_TRUE> > ScopedSECItem;
+typedef scoped_ptr_malloc<
+    PLArenaPool, NSSDestroyer1<PLArenaPool,
+                               PORT_FreeArena,
+                               PR_FALSE> > ScopedPLArenaPool;
 
 }  // namespace crypto
 
 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_