Remove the :-webkit-full-screen-document pseudo class

Remove the :-webkit-full-screen-document pseudo class

It is virtually unused in the wild, according to use counter data:
https://www.chromestatus.com/metrics/feature/timeline/popularity/627

Nothing similar exists in the spec or is likely to ever be added.

BUG=402378
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=198966

[philipj_slow, 2015-07-13 12:45:30]

The CQ bit was checked by philipj@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2015-07-13 12:45:43]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1233503003/1

[commit-bot: I haz the power, 2015-07-13 14:05:59]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-13 14:05:59]

Dry run: This issue passed the CQ dry run.

[philipj_slow, 2015-07-13 14:35:10]

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

[philipj_slow, 2015-07-13 14:35:11]

falken, PTAL. I think this is trivial enough to bypass the intent process, but
if you think this seems sane, I'll ask an API owner to sign off on it too, to
spread the blame a bit :)

[falken, 2015-07-15 09:40:29]

On 2015/07/13 14:35:11, philipj wrote:
> falken, PTAL. I think this is trivial enough to bypass the intent process, but
> if you think this seems sane, I'll ask an API owner to sign off on it too, to
> spread the blame a bit :)

lgtm

[philipj_slow, 2015-07-15 10:22:57]

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

[philipj_slow, 2015-07-15 10:22:58]

Jochen, API owners sanity check please?

[jochen (gone - plz use gerrit), 2015-07-15 14:06:13]

lgtm

[philipj_slow, 2015-07-15 14:10:01]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2015-07-15 14:10:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1233503003/1

[commit-bot: I haz the power, 2015-07-15 15:38:26]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=198966