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

chrome/browser/ui/webui/chromeos/login/network_dropdown.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_dropdown.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 
@@ skipping 30 matching lines @@
   NetworkMenuWebUI(NetworkMenu::Delegate* delegate, content::WebUI* web_ui);
 
   // NetworkMenu override:
   void UpdateMenu() override;
 
   // Called when item with command |id| is chosen.
   void OnItemChosen(int id);
 
  private:
   // Converts menu model into the ListValue, ready for passing to WebUI.
-  base::ListValue* ConvertMenuModel(ui::MenuModel* model);
+  std::unique_ptr<base::ListValue> ConvertMenuModel(ui::MenuModel* model);
 
   // WebUI where network menu is located.
   content::WebUI* web_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkMenuWebUI);
 };
 
 // NetworkMenuWebUI ------------------------------------------------------------
 
 NetworkMenuWebUI::NetworkMenuWebUI(NetworkMenu::Delegate* delegate,
@@ skipping 12 matching lines @@
 }
 
 void NetworkMenuWebUI::OnItemChosen(int id) {
   int index;
   ui::MenuModel* model = GetMenuModel();
    if (!ui::MenuModel::GetModelAndIndexForCommandId(id, &model, &index))
      return;
   model->ActivatedAt(index);
 }
 
-base::ListValue* NetworkMenuWebUI::ConvertMenuModel(ui::MenuModel* model) {
-  base::ListValue* list = new base::ListValue();
+std::unique_ptr<base::ListValue> NetworkMenuWebUI::ConvertMenuModel(
+    ui::MenuModel* model) {
+  auto list = base::MakeUnique<base::ListValue>();
   for (int i = 0; i < model->GetItemCount(); ++i) {
     ui::MenuModel::ItemType type = model->GetTypeAt(i);
     int id;
     if (type == ui::MenuModel::TYPE_SEPARATOR)
       id = -2;
     else
       id = model->GetCommandIdAt(i);
     auto item = base::MakeUnique<base::DictionaryValue>();
     item->SetInteger("id", id);
     base::string16 label = model->GetLabelAt(i);
@@ skipping 109 matching lines @@
   web_ui_->CallJavascriptFunctionUnsafe("cr.ui.DropDown.updateNetworkTitle",
                                         title, icon);
 }
 
 void NetworkDropdown::RequestNetworkScan() {
   NetworkHandler::Get()->network_state_handler()->RequestScan();
   Refresh();
 }
 
 }  // namespace chromeos