Removes code using mus client lib

ash/touch_hud/mus/touch_hud_application.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/touch_hud/mus/touch_hud_application.h"
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/touch_hud/touch_hud_renderer.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/public/cpp/service_context.h"
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/interfaces/window_manager_constants.mojom.h"
 #include "ui/aura/mus/property_converter.h"
 #include "ui/views/mus/aura_init.h"
 #include "ui/views/mus/mus_client.h"
-#include "ui/views/mus/native_widget_mus.h"
 #include "ui/views/mus/pointer_watcher_event_router2.h"
 #include "ui/views/pointer_watcher.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 
 namespace ash {
 namespace touch_hud {
 
 // TouchHudUI handles events on the widget of the touch-hud app. After
 // receiving touch events from PointerWatcher, it calls ash::TouchHudRenderer to
@@ skipping 71 matching lines @@
 
 void TouchHudApplication::Create(
     const service_manager::Identity& remote_identity,
     mash::mojom::LaunchableRequest request) {
   binding_.Close();
   binding_.Bind(std::move(request));
 }
 
 }  // namespace touch_hud
 }  // namespace ash