Remove support for Document.createEvent() without argument

Remove support for Document.createEvent() without argument

Remove support for Document.createEvent() without argument. This only worked
for SVG documents and for historical reasons. The UseCounter shows that
the feature is used by less than 0.0001% of pages.

The new behavior matches the specification:
http://dom.spec.whatwg.org/#dom-document-createevent

It also matches the behavior of Firefox 28 and IE11.

Intent to remove thread on blink-dev:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/INrADzxchrg

R=arv@chromium.org, eseidel@chromium.org
BUG=238366
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=173314

[arv (Not doing code reviews), 2014-04-30 13:40:40]

Maybe add a test?

[Inactive, 2014-04-30 14:05:04]

On 2014/04/30 13:40:40, arv wrote:
> Maybe add a test?

Ok, I hesitated.

[Inactive, 2014-04-30 14:20:49]

On 2014/04/30 13:40:40, arv wrote:
> Maybe add a test?

Done.

[arv (Not doing code reviews), 2014-04-30 15:03:06]

LGTM

[Inactive, 2014-05-05 14:44:57]

The intent to remove received enough support on the mailing list. Could an API
OWNER please review?

[eseidel, 2014-05-05 15:29:21]

lgtm

[commit-bot: I haz the power, 2014-05-05 15:29:31]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ch.dumez@samsung.com/254133002/20001

[commit-bot: I haz the power, 2014-05-05 15:39:54]

Change committed as 173314