Change ui cursor identifiers to an enum class.

ash/display/cursor_window_controller.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 ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_
 #define ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
@@ skipping 61 matching lines @@
 
   const gfx::ImageSkia& GetCursorImageForTest() const;
 
   bool is_cursor_compositing_enabled_;
   aura::Window* container_;
 
   // The bounds of the container in screen coordinates.
   gfx::Rect bounds_in_screen_;
 
   // The native_type of the cursor, see definitions in cursor.h
-  int cursor_type_;
+  ui::CursorType cursor_type_;
 
   // The last requested cursor visibility.
   bool visible_;
 
   ui::CursorSetType cursor_set_;
   gfx::Point hot_point_;
 
   int large_cursor_size_in_dip_;
 
   // The display on which the cursor is drawn.
   // For mirroring mode, the display is always the primary display.
   display::Display display_;
 
   std::unique_ptr<aura::Window> cursor_window_;
   std::unique_ptr<CursorWindowDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(CursorWindowController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_CURSOR_WINDOW_CONTROLLER_H_