Change more base::ListValue methods to use std::unique_ptr.

components/user_manager/user_manager_base.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_manager/user_manager_base.h"
 
 #include <stddef.h>
 #include <set>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/task_runner.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"
 #include "components/session_manager/core/session_manager.h"
@@ skipping 815 matching lines @@
 }
 
 void UserManagerBase::GuestUserLoggedIn() {
   DCHECK(task_runner_->RunsTasksOnCurrentThread());
   active_user_ = User::CreateGuestUser(GetGuestAccountId());
 }
 
 void UserManagerBase::AddUserRecord(User* user) {
   // Add the user to the front of the user list.
   ListPrefUpdate prefs_users_update(GetLocalState(), kRegularUsers);
-  prefs_users_update->Insert(0, new base::StringValue(user->email()));
+  prefs_users_update->Insert(
+      0, base::MakeUnique<base::StringValue>(user->email()));
   users_.insert(users_.begin(), user);
 }
 
 void UserManagerBase::RegularUserLoggedIn(const AccountId& account_id) {
   // Remove the user from the user list.
   active_user_ = RemoveRegularOrSupervisedUserFromList(account_id);
 
   // If the user was not found on the user list, create a new user.
   SetIsCurrentUserNew(!active_user_);
   if (IsCurrentUserNew()) {
@@ skipping 209 matching lines @@
 }
 
 void UserManagerBase::DeleteUser(User* user) {
   const bool is_active_user = (user == active_user_);
   delete user;
   if (is_active_user)
     active_user_ = nullptr;
 }
 
 }  // namespace user_manager