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

services/ui/ws/window_tree.h

 // 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.
 
 #ifndef SERVICES_UI_WS_WINDOW_TREE_H_
 #define SERVICES_UI_WS_WINDOW_TREE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 504 matching lines @@
                       mojom::WmViewportMetricsPtr viewport_metrics,
                       bool is_primary_display,
                       Id window_id,
                       const SetDisplayRootCallback& callback) override;
   void WmResponse(uint32_t change_id, bool response) override;
   void WmSetBoundsResponse(uint32_t change_id) override;
   void WmRequestClose(Id transport_window_id) override;
   void WmSetFrameDecorationValues(
       mojom::FrameDecorationValuesPtr values) override;
   void WmSetNonClientCursor(uint32_t window_id, ui::CursorData cursor) override;
+  void WmLockCursor() override;
+  void WmUnlockCursor() override;
+  void WmSetCursorVisible(bool visible) override;
+  void WmSetGlobalOverrideCursor(
+      base::Optional<ui::CursorData> cursor) override;
   void OnWmCreatedTopLevelWindow(uint32_t change_id,
                                  Id transport_window_id) override;
   void OnAcceleratorAck(
       uint32_t event_id,
       mojom::EventResult result,
       const std::unordered_map<std::string, std::vector<uint8_t>>& properties)
       override;
 
   // AccessPolicyDelegate:
   bool HasRootForAccessPolicy(const ServerWindow* window) const override;
@@ skipping 110 matching lines @@
   // a image move. All weak ptrs are invalidated when a drag is completed.
   base::WeakPtrFactory<WindowTree> drag_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTree);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_TREE_H_