Unprefix most methods on FullscreenElementStack

Unprefix most methods on FullscreenElementStack

fullscreenEnabled no longer even considers the webkitallowfullscreen
attribute, and the prefixes do no good internally anyway. They are
left only on the Mozilla-style API since they should generally not be
used other than for bindings.

It turned out that the Internals wrappers were unused. They were added
in http://trac.webkit.org/changeset/114790 "to facilitate writing
reproducible LayoutTests", but no tests using them were ever added.

BUG=383813
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178339

[philipj_slow, 2014-07-15 12:09:03]

PTAL. I'd like to land this before the Web-facing unprefixing so that the most
likely to be reverted commit is the last one.

[falken, 2014-07-17 02:28:18]

lgtm

nit: rietveld breaks the link in your CL Description, maybe delete the
semicolon?

[philipj_slow, 2014-07-17 06:12:00]

On 2014/07/17 02:28:18, falken wrote:
> lgtm
> 
> nit: rietveld breaks the link in your CL Description, maybe delete the
> semicolon?

Weird, it's not there in my local commit or when I try to edit the description.
I'll just remove the brackets instead.

[philipj_slow, 2014-07-17 06:12:27]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2014-07-17 06:13:50]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/philipj@opera.com/390363002/1

[commit-bot: I haz the power, 2014-07-17 06:17:38]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/1...)

[commit-bot: I haz the power, 2014-07-17 06:20:57]

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

[commit-bot: I haz the power, 2014-07-17 06:20:58]

Try jobs failed on following builders:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/1...)

[philipj_slow, 2014-07-17 06:38:08]

Jochen, can you review Source/web for me? Thanks!

[jochen (gone - plz use gerrit), 2014-07-17 07:04:17]

lgtm

[philipj_slow, 2014-07-17 07:33:13]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2014-07-17 07:34:26]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/philipj@opera.com/390363002/1

[commit-bot: I haz the power, 2014-07-17 08:43:56]

Change committed as 178339