Implement obsolete IDL attributes for <font> element

[frewsxcv]

[frewsxcv]

If this is desire and gets approved, I'll go ahead and implement the rest

https://github.com/servo/servo/blob/master/tests/wpt/web-platform-tests/html/dom/reflection-obsolete.html

https://github.com/servo/servo/blob/master/tests/wpt/metadata/html/dom/reflection-obsolete.html.ini

[Ms2ger]

Out of curiosity, why'd you pick those in particular?

[frewsxcv]

I don't remember why I picked this set of attributes. If implementing these obsolete IDL attributes is desired, I'm open to closing this and just opening a new one that implements a bunch all at once

[Ms2ger]

No, this is fine, just curious.

[nox]

It's fine to implement missing IDL attributes, but I'm not too sure about doing that without implementing what they actually do, like the color attribute. See HTMLFontElement::get_color() and Element::synthesize_presentational_hints_for_legacy_attributes().

[frewsxcv]

Sounds good. I'll implement those, but to avoid conflicts, going to wait a day or so to see if #7452 merges

[nox]

@frewsxcv Thanks. :)

[metajack]

r? @Ms2ger

[nox]

Stealing review since I commented.

[nox]

@metajack This is blocked on #7452, to avoid unnecessary rebases.

[nox]

@frewsxcv #7452 landed.

[frewsxcv]

Alright cool. I'm on traveling for a few more days, then I'll look into this

[frewsxcv]

I'm just going to close this for now. I haven't gotten around to updating this so no point in keeping it around