SetDetails duplicate definitions

[Zekfad]

cookies.dart, types.dart and content_settings.dart defines same type.

It should be a generic usage instead, see #14

[xvrh]

They have the same name but they have different properties. Why do you think they should be the same? And what do you mean by generic? Can you provide an example?

[Zekfad]

SetDetails in each of this duplicates is a generic that passed to of ChromeSetting.set details parameter.
I believe it should be a sealed type hierarchy, e.g. sealed ChromeSettingDetails -> ProxyChromeSettingDetails, CookiesChromeSettingDetails and so on.

Ref: https://developer.chrome.com/docs/extensions/reference/cookies/#type-CookieDetails
Ref: https://developer.chrome.com/docs/extensions/reference/cookies/#method-set
Ref: https://developer.chrome.com/docs/extensions/reference/proxy/#type-ProxyConfig

It seems that cookies are not fully implementing ChromeSetting though, so they probably should be a different API?