Move PrefRegistrySimple to use unique_ptr<Value>

components/prefs/pref_registry.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 COMPONENTS_PREFS_PREF_REGISTRY_H_
 #define COMPONENTS_PREFS_PREF_REGISTRY_H_
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "components/prefs/base_prefs_export.h"
 #include "components/prefs/pref_value_map.h"
 
 namespace base {
 class Value;
 }
 
@@ skipping 48 matching lines @@
   // |pref_name| must be a previously registered preference.
   void SetDefaultPrefValue(const std::string& pref_name, base::Value* value);
 
  protected:
   friend class base::RefCounted<PrefRegistry>;
   virtual ~PrefRegistry();
 
   // Used by subclasses to register a default value and registration flags for
   // a preference. |flags| is a bitmask of |PrefRegistrationFlags|.
   void RegisterPreference(const std::string& path,
-                          base::Value* default_value,
+                          std::unique_ptr<base::Value> default_value,
                           uint32_t flags);
 
   scoped_refptr<DefaultPrefStore> defaults_;
 
   // A map of pref name to a bitmask of PrefRegistrationFlags.
   PrefRegistrationFlagsMap registration_flags_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PrefRegistry);
 };
 
 #endif  // COMPONENTS_PREFS_PREF_REGISTRY_H_