Stop passing raw pointers to base::Value API in c/b/ui

chrome/browser/ui/webui/chromeos/login/network_screen_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/network_screen_handler.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 228 matching lines @@
   // 3) This is the bootstrapping process for a "Slave" device. The locale &
   // input of the "Slave" device is set up by a "Master" device. In this case we
   // don't want EnableLoginLayout() to reset the input method to the hardware
   // default method.
   const bool is_slave = g_browser_process->local_state()->GetBoolean(
       prefs::kOobeControllerDetected);
 
   const bool enable_layouts =
       !user_manager::UserManager::Get()->IsUserLoggedIn() && !is_slave;
 
-  dict->Set("languageList", language_list.release());
-  dict->Set(
-      "inputMethodsList",
-      GetAndActivateLoginKeyboardLayouts(
-          application_locale, selected_input_method, enable_layouts).release());
+  dict->Set("languageList", std::move(language_list));
+  dict->Set("inputMethodsList",
+            GetAndActivateLoginKeyboardLayouts(
+                application_locale, selected_input_method, enable_layouts));
   dict->Set("timezoneList", GetTimezoneList());
 }
 
 void NetworkScreenHandler::Initialize() {
   if (show_on_init_) {
     show_on_init_ = false;
     Show();
   }
 
   // Reload localized strings if they are already resolved.
   if (screen_ && screen_->language_list())
     ReloadLocalizedContent();
 }
 
 // NetworkScreenHandler, private: ----------------------------------------------
 
 // static
-base::ListValue* NetworkScreenHandler::GetTimezoneList() {
+std::unique_ptr<base::ListValue> NetworkScreenHandler::GetTimezoneList() {
   std::string current_timezone_id;
   CrosSettings::Get()->GetString(kSystemTimezone, &current_timezone_id);
 
   std::unique_ptr<base::ListValue> timezone_list(new base::ListValue);
   std::unique_ptr<base::ListValue> timezones = system::GetTimezoneList();
   for (size_t i = 0; i < timezones->GetSize(); ++i) {
     const base::ListValue* timezone = NULL;
     CHECK(timezones->GetList(i, &timezone));
 
     std::string timezone_id;
     CHECK(timezone->GetString(0, &timezone_id));
 
     std::string timezone_name;
     CHECK(timezone->GetString(1, &timezone_name));
 
     std::unique_ptr<base::DictionaryValue> timezone_option(
         new base::DictionaryValue);
     timezone_option->SetString("value", timezone_id);
     timezone_option->SetString("title", timezone_name);
     timezone_option->SetBoolean("selected", timezone_id == current_timezone_id);
     timezone_list->Append(std::move(timezone_option));
   }
 
-  return timezone_list.release();
+  return timezone_list;
 }
 
 }  // namespace chromeos