Add [TypeChecking=Interface] to Element interface

Add [TypeChecking=Interface] to Element interface

This affects the generated code for the methods

  setAttributeNode()
  setAttributeNodeNS()
  removeAttributeNode()
  insertAdjacentElement()

so that they now throw TypeError exceptions when called with invalid
argument values.

The implementations of each function contained code (removed here) that
checked for invalid argument values and threw exceptions, so the only
difference is the type of exception thrown (DOMException -> TypeError)
except for insertAdjacentElement() that was already throwing TypeErrors.

BUG=462561
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=191256

[Jens Widell, 2015-03-03 11:27:23]

jl@opera.com changed reviewers:
+ philipj@opera.com

[Jens Widell, 2015-03-03 11:27:23]

PTAL

[philipj_slow, 2015-03-04 04:04:47]

The CQ bit was checked by philipj@opera.com

[philipj_slow, 2015-03-04 04:04:47]

lgtm

[commit-bot: I haz the power, 2015-03-04 04:05:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/969363002/1

[commit-bot: I haz the power, 2015-03-04 06:35:55]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=191256