ozone: Handle default cursors with no bitmap in BitmapCursorFactoryOzone

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 4d8331f8b51a92beed36a0e1c41424f25b0e466f..efbe484cd7e9195ba8f447029b03ef8aba98b7a7 100644
--- a/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
+++ b/ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h
@@ -60,6 +60,9 @@ class UI_BASE_EXPORT BitmapCursorFactoryOzone : public CursorFactoryOzone {
   virtual void UnrefImageCursor(PlatformCursor cursor) OVERRIDE;
 
  private:
+  // Get cached BitmapCursorOzone for a default cursor.
+  scoped_refptr<BitmapCursorOzone> GetDefaultCursorInternal(int type);
+
   // Default cursors are cached & owned by the factory.
   typedef std::map<int, scoped_refptr<BitmapCursorOzone> > DefaultCursorMap;
   DefaultCursorMap default_cursors_;