Convert //sync from scoped_ptr to std::unique_ptr

sync/util/nigori.cc

 // 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.
 
 #include "sync/util/nigori.h"
 
 #include <stdint.h>
 
 #include <sstream>
 #include <vector>
@@ skipping 56 matching lines @@
 Nigori::~Nigori() {
 }
 
 bool Nigori::InitByDerivation(const std::string& hostname,
                               const std::string& username,
                               const std::string& password) {
   NigoriStream salt_password;
   salt_password << username << hostname;
 
   // Suser = PBKDF2(Username || Servername, "saltsalt", Nsalt, 8)
-  scoped_ptr<SymmetricKey> user_salt(SymmetricKey::DeriveKeyFromPassword(
-      SymmetricKey::HMAC_SHA1, salt_password.str(),
-      kSaltSalt,
-      kSaltIterations,
+  std::unique_ptr<SymmetricKey> user_salt(SymmetricKey::DeriveKeyFromPassword(
+      SymmetricKey::HMAC_SHA1, salt_password.str(), kSaltSalt, kSaltIterations,
       kSaltKeySizeInBits));
   DCHECK(user_salt.get());
 
   std::string raw_user_salt;
   if (!user_salt->GetRawKey(&raw_user_salt))
     return false;
 
   // Kuser = PBKDF2(P, Suser, Nuser, 16)
   user_key_.reset(SymmetricKey::DeriveKeyFromPassword(SymmetricKey::AES,
       password, raw_user_salt, kUserIterations, kDerivedKeySizeInBits));
@@ skipping 153 matching lines @@
   DCHECK(user_key);
   DCHECK(encryption_key);
   DCHECK(mac_key);
 
   return user_key_->GetRawKey(user_key) &&
       encryption_key_->GetRawKey(encryption_key) &&
       mac_key_->GetRawKey(mac_key);
 }
 
 }  // namespace syncer