Convert //components/mus from scoped_ptr to std::unique_ptr

components/mus/ws/window_tree_host_factory.cc

 // Copyright 2016 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/mus/ws/window_tree_host_factory.h"
 
 #include "components/mus/gles2/gpu_state.h"
 #include "components/mus/surfaces/surfaces_state.h"
 #include "components/mus/ws/display.h"
 #include "components/mus/ws/display_binding.h"
@@ skipping 14 matching lines @@
 
 void WindowTreeHostFactory::AddBinding(
     mojom::WindowTreeHostFactoryRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 void WindowTreeHostFactory::CreateWindowTreeHost(
     mojom::WindowTreeHostRequest host,
     mojom::WindowTreeClientPtr tree_client) {
   Display* display = new Display(window_server_, platform_display_init_params_);
-  scoped_ptr<DisplayBindingImpl> display_binding(
+  std::unique_ptr<DisplayBindingImpl> display_binding(
       new DisplayBindingImpl(std::move(host), display, user_id_,
                              std::move(tree_client), window_server_));
   display->Init(std::move(display_binding));
 }
 
 }  // namespace ws
 }  // namespace mus