DOM Load and Save is missing

[Mouvedia]

https://www.w3.org/TR/DOM-Level-3-LS/load-save.html

LSProgressEvent and XMLDocument.load() were supported by Firefox. Most of the rest was supported by Opera.

• [x] Does the new objects or fields show up in mdn/browser-compat-data? (partially)
• [x] Is the IDL source from WHATWG or W3C? (W3C recommendation)
• [x] Are the additions available in at least two browsers? (yes)
• [x] Could any types added at the global scope have naming conflicts? (no)
• [ ] Are the new features going to be used by a lot of people?

^{@orta told me to migrate DefinitelyTyped/DefinitelyTyped#28470 here}

[saschanaz]

Are the additions available in at least two browsers?

It's not "are" here, it's "were", right? I doubt those APIs deserve to be here then...

[saschanaz]

@github-actions close

[github-actions[bot]]

Closing because @saschanaz is one of the code-owners of this repository.