Convert //components/user_prefs from scoped_ptr to std::unique_ptr

components/user_prefs/tracked/pref_service_hash_store_contents.cc

 // Copyright 2014 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 "components/user_prefs/tracked/pref_service_hash_store_contents.h"
 
 #include "base/values.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/prefs/scoped_user_pref_update.h"
@@ skipping 103 matching lines @@
 
 const base::DictionaryValue* PrefServiceHashStoreContents::GetContents() const {
   const base::DictionaryValue* pref_hash_dicts =
       pref_service_->GetDictionary(kProfilePreferenceHashes);
   const base::DictionaryValue* hashes_dict = NULL;
   pref_hash_dicts->GetDictionaryWithoutPathExpansion(hash_store_id_,
                                                      &hashes_dict);
   return hashes_dict;
 }
 
-scoped_ptr<HashStoreContents::MutableDictionary>
+std::unique_ptr<HashStoreContents::MutableDictionary>
 PrefServiceHashStoreContents::GetMutableContents() {
-  return scoped_ptr<HashStoreContents::MutableDictionary>(
+  return std::unique_ptr<HashStoreContents::MutableDictionary>(
       new PrefServiceMutableDictionary(hash_store_id_, pref_service_));
 }
 
 std::string PrefServiceHashStoreContents::GetSuperMac() const {
   const base::DictionaryValue* pref_hash_dicts =
       pref_service_->GetDictionary(kProfilePreferenceHashes);
   const base::DictionaryValue* hash_of_hashes_dict = NULL;
   std::string hash_of_hashes;
   if (pref_hash_dicts->GetDictionaryWithoutPathExpansion(
           kHashOfHashesDict, &hash_of_hashes_dict)) {
     hash_of_hashes_dict->GetStringWithoutPathExpansion(hash_store_id_,
                                                        &hash_of_hashes);
   }
   return hash_of_hashes;
 }
 
 void PrefServiceHashStoreContents::SetSuperMac(const std::string& super_mac) {
   PrefServiceMutableDictionary(kHashOfHashesDict, pref_service_)
       ->SetStringWithoutPathExpansion(hash_store_id_, super_mac);
 }