Make arguments to insertAdjacentHTML method non-optional

Make arguments to insertAdjacentHTML method non-optional

http://domparsing.spec.whatwg.org/#dom-element-insertadjacenthtml

Both Firefox and IE throws when either argument is missing.

BUG=326970
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=163519

[Mike West, 2013-12-09 19:36:26]

Hi David, thanks for this patch.

The change LGTM, but please let the linux_chromeos bot run through before
landing the patch. A similar patch to remove optionality of Element methods
broke several poorly-written Chromium-side tests earlier in the day.

As an aside, I'd happily review further patches to convert these tests to use
'js-test-pre.js', if you're so inclined.

[davve, 2013-12-09 19:56:31]

> .. but please let the linux_chromeos bot run through before
> landing the patch. A similar patch to remove optionality of Element methods
> broke several poorly-written Chromium-side tests earlier in the day.

Yes, I saw. I thought I should keep you in the loop because of that. I grepped 
through my chromium checkout but didn't find any obvious breakage there at
least.
 
> As an aside, I'd happily review further patches to convert these tests to use
> 'js-test-pre.js', if you're so inclined.

That's an excellent idea. I'll keep you posted. :)

[commit-bot: I haz the power, 2013-12-10 07:56:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/davve@opera.com/109273003/20001

[commit-bot: I haz the power, 2013-12-10 09:06:45]

Change committed as 163519