Use same enum for or all include or exclude enums?

[beaufortfrancois]

May I suggest we add a single enum for "include", "exclude" (not web exposed) and use it where needed?

Before:

enum SelfCapturePreferenceEnum {
  "include",
  "exclude"
};
enum SystemAudioPreferenceEnum {
  "include",
  "exclude"
};
enum SurfaceSwitchingPreferenceEnum {
  "include",
  "exclude"
};
enum MonitorTypeSurfacesEnum {
  "include",
  "exclude"
};

After:

enum DisplayMediaIncludeOrExclude { "include", "exclude" };

typedef DisplayMediaIncludeOrExclude SystemAudioPreferenceEnum;
typedef DisplayMediaIncludeOrExclude SelfCapturePreferenceEnum;
typedef DisplayMediaIncludeOrExclude SurfaceSwitchingPreferenceEnum;
typedef DisplayMediaIncludeOrExclude MonitorTypeSurfacesEnum;

[eladalon1983]

If it's not Web-exposed, could it be used in the IDL files of UA implementations without being reflected by a spec change, perhaps?

[beaufortfrancois]

@jan-ivar @youennf What do you think?