Delete the ViewManager and WindowManager services.

mojo/services/window_manager/interfaces/window_manager.mojom

-// Copyright 2014 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.
-
-[DartPackage="mojo_services"]
-module mojo;
-
-import "input_events/interfaces/input_events.mojom";
-import "mojo/public/interfaces/application/service_provider.mojom";
-
-[ServiceName="mojo::WindowManager"]
-interface WindowManager {
-  // Requests the WindowManager to embed the app for |url| at an appropriate
-  // View. See ViewMangerService::Embed() for details on |services| and
-  // |exposed_services|.
-  Embed(string url,
-        ServiceProvider&? services,
-        ServiceProvider? exposed_services);
-
-  SetCapture(uint32 view_id) => (bool success);
-  FocusWindow(uint32 view_id) => (bool success);
-  ActivateWindow(uint32 view_id) => (bool success);
-
-  // Requests the current focus and activation state and an interface to observe
-  // future changes.
-  // If |observer| is not null capture, focus and activation updates will be
-  // sent to it.
-  GetFocusedAndActiveViews(WindowManagerObserver? observer)
-      => (uint32 capture_view_id,
-          uint32 focused_view_id,
-          uint32 active_view_id);
-};
-
-interface WindowManagerObserver {
-  OnCaptureChanged(uint32 capture_view_id);
-  OnFocusChanged(uint32 focused_view_id);
-  OnActiveWindowChanged(uint32 focused_view_id);
-};