Use webidl2.js instead of WebIDLParser.js

[ayg]

I'm pretty sure we don't want to use WebIDLParser.js anymore. It's obsolete, right? The files seem to work locally with this change (no exceptions thrown or anything), although I didn't test if it caused any changes in test failures.

[hoppipolla-critic-bot]

Critic review: https://critic.hoppipolla.co.uk/r/340

This is an external review system which you may optionally use for the code review of your pull request.

[jgraham]

Please check critic for issues before you merge. This PR is broken at the moment.

[tobie]

This nicely showcases why using both GitHub and an external review system isn't such a great idea.

That said, what do you want me to do about this? And what's broken about this PR?

[Ms2ger]

@tobie: revert the changes, please. http://w3c-test.org/web-platform-tests/master/dom/interfaces.html and http://w3c-test.org/web-platform-tests/master/html/dom/interfaces.html are reduced to blank pages.

[tobie]

Reverted the merge commit.

This means that should you want to resurrect this pull request, you will need to:

1. rebase your branch:

   git fetch git@github.com:w3c/web-platform-tests.git
   git rebase FETCH_HEAD submission/ayg-update-dom-interfaces
   

2. revert the revert I just committed (yeah, I know):

   git revert 13d24a3c501140e56b890281705b36f6ee02c972
   

3. Make other changes you want to make.

4. Push your changes back to your fork (which will automatically update this pull request):

   git push git@github.com:ayg/web-platform-tests.git submission/ayg-update-dom-interfaces
   

You'll find a detailed explanation here of the process here.