Change ui cursor identifiers to an enum class.

ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h

Index: ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
diff --git a/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h b/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
index de7352d5939877291242874aa372b23b6841ffe9..7a8a2d6fe27e95909937366ccf3daa13407223bd 100644
--- a/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
+++ b/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
@@ -61,7 +61,7 @@ class UI_BASE_EXPORT BitmapCursorFactoryOzone : public CursorFactoryOzone {
       PlatformCursor platform_cursor);
 
   // CursorFactoryOzone:
-  PlatformCursor GetDefaultCursor(int type) override;
+  PlatformCursor GetDefaultCursor(CursorType type) override;
   PlatformCursor CreateImageCursor(const SkBitmap& bitmap,
                                    const gfx::Point& hotspot,
                                    float bitmap_dpi) override;
@@ -74,10 +74,11 @@ class UI_BASE_EXPORT BitmapCursorFactoryOzone : public CursorFactoryOzone {
 
  private:
   // Get cached BitmapCursorOzone for a default cursor.
-  scoped_refptr<BitmapCursorOzone> GetDefaultCursorInternal(int type);
+  scoped_refptr<BitmapCursorOzone> GetDefaultCursorInternal(CursorType type);
 
   // Default cursors are cached & owned by the factory.
-  typedef std::map<int, scoped_refptr<BitmapCursorOzone> > DefaultCursorMap;
+  typedef std::map<CursorType, scoped_refptr<BitmapCursorOzone>>
+      DefaultCursorMap;
   DefaultCursorMap default_cursors_;
 
   DISALLOW_COPY_AND_ASSIGN(BitmapCursorFactoryOzone);