mac: Use immersive fullscreen for html5 style fullscreen.

mac: Use immersive fullscreen for html5 style fullscreen.

This accidentally changed during the large fullscreen refactor. The method
enterPresentationModeForURL:* was previously used to enter both immersive
fullscreen and AppKit Fullscreen. Now it is only used to enter AppKit
Fullscreen.

BUG=406656
Committed: https://crrev.com/802fbf73dba0b4f09f96640452d49de768c43cc0
Cr-Commit-Position: refs/heads/master@{#294636}

[erikchen, 2014-09-12 17:40:23]

erikchen@chromium.org changed reviewers:
+ rsesek@chromium.org

[erikchen, 2014-09-12 17:40:24]

rsesek: Please review.

[Robert Sesek, 2014-09-12 17:42:39]

I think the comment in the .h needs to be updated, too.

[erikchen, 2014-09-12 17:51:00]

quite observant, sir.

Fixed.

[Robert Sesek, 2014-09-12 17:51:52]

LGTM

[erikchen, 2014-09-12 17:58:11]

The CQ bit was checked by erikchen@chromium.org

[commit-bot: I haz the power, 2014-09-12 18:19:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/565803004/20001

[commit-bot: I haz the power, 2014-09-12 19:43:24]

Committed patchset #2 (id:20001) as 95335dc65c534453f6c1373b5ff41e8314dfb756

[commit-bot: I haz the power, 2014-09-12 19:47:35]

Patchset 2 (id:??) landed as
https://crrev.com/802fbf73dba0b4f09f96640452d49de768c43cc0
Cr-Commit-Position: refs/heads/master@{#294636}