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

ui/aura/test/mus/test_window_manager_client.h

 // Copyright 2017 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 UI_AURA_TEST_MUS_TEST_WINDOW_MANAGER_CLIENT_H_
 #define UI_AURA_TEST_MUS_TEST_WINDOW_MANAGER_CLIENT_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 30 matching lines @@
                       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(
       ui::mojom::FrameDecorationValuesPtr values) override;
   void WmSetNonClientCursor(uint32_t window_id,
                             ui::CursorData cursor_data) override;
+  void WmLockCursor() override;
+  void WmUnlockCursor() override;
+  void WmShowCursor() override;
+  void WmHideCursor() 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,
       ui::mojom::EventResult result,
       const std::unordered_map<std::string, std::vector<uint8_t>>& properties)
       override;
 
   std::vector<WindowManagerClientChangeType> changes_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWindowManagerClient);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_TEST_MUS_TEST_WINDOW_MANAGER_CLIENT_H_