Remove ElementList and NodeList

[DartBot]

This issue was originally filed by @seaneagan

---

In dart:html:

ElementList
NodeList

could be removed and references replaced with:

List<Element>
List<Node>

if the following are fixed:

issue #1062
issue #1790

[madsager]

Added Area-DOM, Triaged labels.

[vsmenon]

Added this to the M1 milestone.

[vsmenon]

Set owner to @vsmenon.

[vsmenon]

Issue #4125 has been merged into this issue.

[sethladd]

4125 was sort of a dupe. There's a distinct mismatch:

Document.queryAll : NodeList
Top level queryAll : ElementList

Is this distinction on purpose?

[vsmenon]

That's a mistake as well. Both should be statically typed to return List<Node>.

[sethladd]

Removed Priority-Medium label.
Added Priority-High label.

[sethladd]

Let's fix top level queryAll in the meantime. I'm not sure when the blocking issues for this bug will get fixed. Will that work?

[sethladd]

Related is bug 3867

[iposva-google]

Removed Area-DOM label.
Added Area-HTML label.

[vsmenon]

Removed the owner.

[blois]

Set owner to @blois.
Added Accepted label.

[blois]

Added Fixed label.