Removes code using mus client lib

ui/views/mus/screen_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.
 
 // This has to be before any other includes, else default is picked up.
 // See base/logging for details on this.
 #define NOTIMPLEMENTED_POLICY 5
 
 #include "ui/views/mus/screen_mus.h"
 
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/public/interfaces/constants.mojom.h"
 #include "ui/aura/window.h"
-#include "ui/views/mus/native_widget_mus.h"
 #include "ui/views/mus/screen_mus_delegate.h"
 #include "ui/views/mus/window_manager_frame_values.h"
 
 namespace mojo {
 
 template <>
 struct TypeConverter<views::WindowManagerFrameValues,
                      ui::mojom::FrameDecorationValuesPtr> {
   static views::WindowManagerFrameValues Convert(
       const ui::mojom::FrameDecorationValuesPtr& input) {
@@ skipping 120 matching lines @@
   // TODO(kylechar): DisplayList would need to change to handle having no
   // primary display.
   if (primary_display_id == display::kInvalidDisplayId)
     return;
 
   ProcessDisplayChanged(*display_list().FindDisplayById(primary_display_id),
                         true);
 }
 
 }  // namespace views