convert //mash to std::unique_ptr

mash/example/window_type_launcher/window_type_launcher.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 "mash/example/window_type_launcher/window_type_launcher.h"
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "mash/session/public/interfaces/session.mojom.h"
@@ skipping 342 matching lines @@
   views::LabelButton* logout_button_;
   views::LabelButton* switch_user_button_;
   views::LabelButton* widgets_button_;
   views::LabelButton* system_modal_button_;
   views::LabelButton* window_modal_button_;
   views::LabelButton* child_modal_button_;
   views::LabelButton* transient_button_;
   views::LabelButton* examples_button_;
   views::LabelButton* show_hide_window_button_;
   views::LabelButton* show_web_notification_;
-  scoped_ptr<views::MenuRunner> menu_runner_;
+  std::unique_ptr<views::MenuRunner> menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTypeLauncherView);
 };
 
 }  // namespace
 
 WindowTypeLauncher::WindowTypeLauncher() {}
 WindowTypeLauncher::~WindowTypeLauncher() {}
 
 void WindowTypeLauncher::Initialize(mojo::Connector* connector,
                                     const mojo::Identity& identity,
                                     uint32_t id) {
   aura_init_.reset(new views::AuraInit(connector, "views_mus_resources.pak"));
 
   views::WindowManagerConnection::Create(connector);
 
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
   params.delegate = new WindowTypeLauncherView(connector);
   widget->Init(params);
   widget->Show();
 }
 
 bool WindowTypeLauncher::ShellConnectionLost() {
   base::MessageLoop::current()->QuitWhenIdle();
   return false;
 }