Add {Lock,Unlock,Show,Hide}Cursor() to the window manager mojom.

services/ui/ws/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 import("//services/service_manager/public/tools/test/service_test.gni")
 
 # In external window mode, top-level windows are native platform windows i.e.
 # not children of a Chrome OS window manager's root window.
 is_external_mode = use_ozone && !is_chromeos
 
 static_library("lib") {
   sources = [
     "accelerator.cc",
     "accelerator.h",
     "access_policy.h",
     "access_policy_delegate.h",
     "accessibility_manager.cc",
     "accessibility_manager.h",
     "cursor_location_manager.cc",
     "cursor_location_manager.h",
+    "cursor_state.cc",
+    "cursor_state.h",
     "default_access_policy.cc",
     "default_access_policy.h",
     "display.cc",
     "display.h",
     "display_binding.cc",
     "display_binding.h",
     "display_client_compositor_frame_sink.cc",
     "display_client_compositor_frame_sink.h",
     "display_manager.cc",
     "display_manager.h",
@@ skipping 189 matching lines @@
     ":mus_ws_unittests",
   ]
   if (!is_android) {
     deps += [ "//services/ui/public/cpp/tests:mus_public_unittests" ]
   }
 }
 
 service_test("mus_ws_unittests") {
   sources = [
     "cursor_location_manager_unittest.cc",
+    "cursor_state_unittest.cc",
     "cursor_unittest.cc",
     "display_unittest.cc",
     "drag_controller_unittest.cc",
     "event_dispatcher_unittest.cc",
     "event_matcher_unittest.cc",
     "focus_controller_unittest.cc",
     "frame_generator_unittest.cc",
     "gpu_host_unittest.cc",
     "server_window_drawn_tracker_unittest.cc",
     "test_server_window_delegate.cc",
@@ skipping 58 matching lines @@
 service_manifest("mus_ws_unittests_app_manifest") {
   name = "mus_ws_unittests_app"
   source = "mus_ws_unittests_app_manifest.json"
 }
 
 catalog("mus_ws_unittests_catalog") {
   embedded_services = [ ":mus_ws_unittests_app_manifest" ]
 
   standalone_services = [ "//services/ui:manifest" ]
 }