Allow custom deleters to opt out of self reset checks for scoped_ptr.

crypto/scoped_nss_types.h

 // Copyright (c) 2012 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_
 
 #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 {
+  typedef void AllowSelfReset;
   void operator()(Type* ptr) const {
     Destroyer(ptr);
   }
 };
 
 template <typename Type, void (*Destroyer)(Type*, PRBool), PRBool freeit>
 struct NSSDestroyer1 {
+  typedef void AllowSelfReset;
   void operator()(Type* ptr) const {
     Destroyer(ptr, freeit);
   }
 };
 
 // Define some convenient scopers around NSS pointers.
 typedef scoped_ptr<PK11Context,
                    NSSDestroyer1<PK11Context, PK11_DestroyContext, PR_TRUE> >
     ScopedPK11Context;
 typedef scoped_ptr<PK11SlotInfo, NSSDestroyer<PK11SlotInfo, PK11_FreeSlot> >
@@ skipping 14 matching lines @@
     ScopedSECAlgorithmID;
 typedef scoped_ptr<SECItem, NSSDestroyer1<SECItem, SECITEM_FreeItem, PR_TRUE> >
     ScopedSECItem;
 typedef scoped_ptr<PLArenaPool,
                    NSSDestroyer1<PLArenaPool, PORT_FreeArena, PR_FALSE> >
     ScopedPLArenaPool;
 
 }  // namespace crypto
 
 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_