mus ws: Consistently use mojom::Cursor instead of int32_t.

services/ui/ws/display.h

 // Copyright 2015 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_DISPLAY_H_
 #define SERVICES_UI_WS_DISPLAY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 127 matching lines @@
   void AddActivationParent(ServerWindow* window);
   void RemoveActivationParent(ServerWindow* window);
 
   void UpdateTextInputState(ServerWindow* window,
                             const ui::TextInputState& state);
   void SetImeVisibility(ServerWindow* window, bool visible);
 
   // Called just before |tree| is destroyed.
   void OnWillDestroyTree(WindowTree* tree);
 
-  void UpdateNativeCursor(int32_t cursor_id);
+  void UpdateNativeCursor(mojom::Cursor cursor_id);
 
   // mojom::WindowTreeHost:
   void SetSize(const gfx::Size& size) override;
   void SetTitle(const mojo::String& title) override;
 
  private:
   friend class test::DisplayTestApi;
 
   using WindowManagerDisplayRootMap =
       std::map<UserId, WindowManagerDisplayRoot*>;
@@ skipping 40 matching lines @@
 
   std::unique_ptr<DisplayBinding> binding_;
   // Set once Init() has been called.
   bool init_called_ = false;
   WindowServer* const window_server_;
   std::unique_ptr<ServerWindow> root_;
   std::unique_ptr<PlatformDisplay> platform_display_;
   std::unique_ptr<FocusController> focus_controller_;
 
   // The last cursor set. Used to track whether we need to change the cursor.
-  int32_t last_cursor_;
+  mojom::Cursor last_cursor_;
 
   ServerWindowTracker activation_parents_;
 
   // Set of windows with surfaces that need to be destroyed once the frame
   // draws.
   std::set<ServerWindow*> windows_needing_frame_destruction_;
 
   WindowManagerDisplayRootMap window_manager_display_root_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Display);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_DISPLAY_H_