Move PrefRegistrySimple to use unique_ptr<Value>

components/signin/core/browser/signin_manager_base.cc

Index: components/signin/core/browser/signin_manager_base.cc
diff --git a/components/signin/core/browser/signin_manager_base.cc b/components/signin/core/browser/signin_manager_base.cc
index b36d21d0f56930938c7e34d92c8628b878b2e0bd..df125732094ec78b37c3e717378dc4c7669e1cc8 100644
--- a/components/signin/core/browser/signin_manager_base.cc
+++ b/components/signin/core/browser/signin_manager_base.cc
@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "base/command_line.h"
+#include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
@@ -58,7 +59,7 @@ void SigninManagerBase::RegisterProfilePrefs(
   registry->RegisterBooleanPref(prefs::kAutologinEnabled, true);
   registry->RegisterBooleanPref(prefs::kReverseAutologinEnabled, true);
   registry->RegisterListPref(prefs::kReverseAutologinRejectedEmailList,
-                             new base::ListValue);
+                             base::MakeUnique<base::ListValue>());
   registry->RegisterBooleanPref(prefs::kSigninAllowed, true);
   registry->RegisterInt64Pref(prefs::kSignedInTime,
                               base::Time().ToInternalValue());