Remove use of deprecated base::ListValue::Append(Value*) overload in //chrome/browser/chromeos

chrome/browser/chromeos/login/app_launch_signin_screen.cc

 // Copyright 2013 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 "chrome/browser/chromeos/login/app_launch_signin_screen.h"
 
+#include <utility>
+
+#include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
 #include "chrome/browser/chromeos/login/screens/user_selection_screen.h"
 #include "chrome/browser/chromeos/login/session/user_session_manager.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "chrome/grit/generated_resources.h"
 #include "chromeos/login/auth/user_context.h"
 #include "components/proximity_auth/screenlock_bridge.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 187 matching lines @@
   base::ListValue users_list;
   const user_manager::UserList& users = GetUsers();
 
   for (user_manager::UserList::const_iterator it = users.begin();
        it != users.end();
        ++it) {
     proximity_auth::ScreenlockBridge::LockHandler::AuthType initial_auth_type =
         UserSelectionScreen::ShouldForceOnlineSignIn(*it)
             ? proximity_auth::ScreenlockBridge::LockHandler::ONLINE_SIGN_IN
             : proximity_auth::ScreenlockBridge::LockHandler::OFFLINE_PASSWORD;
-    base::DictionaryValue* user_dict = new base::DictionaryValue();
+    auto user_dict = base::MakeUnique<base::DictionaryValue>();
     UserSelectionScreen::FillUserDictionary(
-        *it,
-        true,   /* is_owner */
-        false,  /* is_signin_to_add */
-        initial_auth_type,
-        NULL,   /* public_session_recommended_locales */
-        user_dict);
-    users_list.Append(user_dict);
+        *it, true,               /* is_owner */
+        false,                   /* is_signin_to_add */
+        initial_auth_type, NULL, /* public_session_recommended_locales */
+        user_dict.get());
+    users_list.Append(std::move(user_dict));
   }
 
   webui_handler_->LoadUsers(users_list, false);
 }
 
 void AppLaunchSigninScreen::CheckUserStatus(const AccountId& account_id) {}
 
 bool AppLaunchSigninScreen::IsUserWhitelisted(const AccountId& account_id) {
   NOTREACHED();
   return true;
 }
 
 }  // namespace chromeos