mash: Partially migrate ash/desktop_background to ash common types.

ash/sysui/sysui_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/sysui/sysui_application.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
+#include "ash/common/login_status.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm_shell.h"
-#include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/display/display_manager.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/ash_window_tree_host_platform.h"
 #include "ash/public/interfaces/ash_window_type.mojom.h"
 #include "ash/public/interfaces/container.mojom.h"
 #include "ash/root_window_settings.h"
 #include "ash/shell.h"
 #include "ash/shell_init_params.h"
 #include "ash/sysui/app_list_presenter_mus.h"
 #include "ash/sysui/keyboard_ui_mus.h"
@@ skipping 315 matching lines @@
                               mojom::WallpaperControllerRequest request) {
   mojom::WallpaperController* wallpaper_controller =
       static_cast<UserWallpaperDelegateMus*>(
           Shell::GetInstance()->user_wallpaper_delegate());
   wallpaper_controller_bindings_.AddBinding(wallpaper_controller,
                                             std::move(request));
 }
 
 }  // namespace sysui
 }  // namespace ash