Converts ash to use aura-mus

ash/mus/native_widget_factory_mus.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 "ash/mus/native_widget_factory_mus.h"
-
-#include "ash/common/wm_shell.h"
-#include "ash/mus/bridge/wm_window_mus.h"
-#include "ash/mus/window_manager.h"
-#include "services/ui/public/cpp/property_type_converters.h"
-#include "ui/views/mus/native_widget_mus.h"
-#include "ui/views/views_delegate.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace mus {
-
-namespace {
-
-views::NativeWidget* CreateNativeWidgetMus(
-    WindowManager* window_manager,
-    const views::Widget::InitParams& init_params,
-    views::internal::NativeWidgetDelegate* delegate) {
-  // TYPE_CONTROL widgets require a NativeWidgetAura. So we let this fall
-  // through, so that the default NativeWidgetPrivate::CreateNativeWidget() is
-  // used instead.
-  if (init_params.type == views::Widget::InitParams::TYPE_CONTROL)
-    return nullptr;
-  std::map<std::string, std::vector<uint8_t>> props;
-  views::NativeWidgetMus::ConfigurePropertiesForNewWindow(init_params, &props);
-  return new views::NativeWidgetMus(
-      delegate, window_manager->NewTopLevelWindow(&props),
-      ui::mojom::CompositorFrameSinkType::DEFAULT);
-}
-
-}  // namespace
-
-NativeWidgetFactoryMus::NativeWidgetFactoryMus(WindowManager* window_manager) {
-  views::ViewsDelegate::GetInstance()->set_native_widget_factory(
-      base::Bind(&CreateNativeWidgetMus, window_manager));
-}
-
-NativeWidgetFactoryMus::~NativeWidgetFactoryMus() {
-  if (views::ViewsDelegate::GetInstance()) {
-    views::ViewsDelegate::GetInstance()->set_native_widget_factory(
-        views::ViewsDelegate::NativeWidgetFactory());
-  }
-}
-
-}  // namespace mus
-}  // namespace ash