Make arguments to some Document and Element methods non-optional

Make arguments to some Document and Element methods non-optional

https://dom.spec.whatwg.org/#document
https://dom.spec.whatwg.org/#element

The modified missing-arguments.html tests all pass in IE11 and Firefox
Nightly 36.0a1, i.e. these arguments are already non-optional in those
browsers, which limits the possible breakage to WebKit-specific content.

Note that Document.createAttributeNS()'s qualifiedName argument should
not be nullable per spec, but that is an orthogonal issue.

BUG=325922
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185773

[philipj_slow, 2014-11-19 23:25:33]

add tests

[philipj_slow, 2014-11-20 14:10:44]

test

[philipj_slow, 2014-11-20 14:31:55]

restore nullability

[philipj_slow, 2014-11-20 14:38:25]

philipj@opera.com changed reviewers:
+ pdr@chromium.org

[philipj_slow, 2014-11-20 14:38:26]

PTAL. These are Web-facing changes, but on rather obscure APIs and breakage is
unlikely, so I'm bypassing all process, as in some other cases for issue 325922.

[philipj_slow, 2014-11-20 19:37:53]

update expectations

[philipj_slow, 2014-11-20 19:39:36]

There's a chance some test changed in https://codereview.chromium.org/740223003/
will break, so I'll wait before that's landed before giving the bots another
run. They were happy with PS4 except for where I forgot to update expectations.

[philipj_slow, 2014-11-20 23:31:01]

rebase+adapt

[pdr., 2014-11-21 07:13:57]

The CQ bit was checked by pdr@chromium.org

[pdr., 2014-11-21 07:13:58]

lgtm

[commit-bot: I haz the power, 2014-11-21 07:14:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/737133002/100001

[commit-bot: I haz the power, 2014-11-21 08:45:19]

Committed patchset #6 (id:100001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=185773