Mac: Minor fullscreen adjustments.

Mac: Minor fullscreen adjustments.

- In Canonical Fullscreen, the toolbar/tabstrip now slide over the content when
the AppKit menu bar is revealed. This prevents a series of fast resizes of the
content view, which is janky.
- Adjust the z-ordering of the infobar so that it shows in front of the
bookmark bar and toolbar in Canonical Fullscreen.
- Removed method -isInFullscreenWithOmniboxSliding, as it has the same behavior
as -isInAnyFullscreenMode.

BUG=413210
Committed: https://crrev.com/c70ce43e9e3416dff51f50bef0fc2d25e88735e3
Cr-Commit-Position: refs/heads/master@{#296832}

[erikchen, 2014-09-25 17:54:38]

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

[erikchen, 2014-09-25 17:54:39]

rsesek: Please review.

[Robert Sesek, 2014-09-25 18:10:00]

Patched this in, yes this is much better. LGTM

[Robert Sesek, 2014-09-25 18:10:19]

Also, do any tests need to be updated?

[erikchen, 2014-09-25 20:29:08]

rsesek: No response expected.

Added a unit test. Removed a method which had the same behavior as
-isInAnyFullscreenMode. Used windowSize instead of contentViewSize in the window
layout logic (the two are the same in fullscreen mode, but it makes more sense
to look at windowSize).

[erikchen, 2014-09-25 20:29:13]

The CQ bit was checked by erikchen@chromium.org

[commit-bot: I haz the power, 2014-09-25 20:31:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/607603003/20001

[commit-bot: I haz the power, 2014-09-25 22:19:38]

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

[commit-bot: I haz the power, 2014-09-25 22:19:39]

Try jobs failed on following builders:
  mac_chromium_rel_swarming on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[erikchen, 2014-09-25 23:01:13]

The CQ bit was checked by erikchen@chromium.org

[commit-bot: I haz the power, 2014-09-25 23:02:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/607603003/40001

[commit-bot: I haz the power, 2014-09-25 23:39:36]

Committed patchset #3 (id:40001) as b3b1dacc2cf56c6652b5a83acb5a2009575d3acc

[commit-bot: I haz the power, 2014-09-25 23:40:13]

Patchset 3 (id:??) landed as
https://crrev.com/c70ce43e9e3416dff51f50bef0fc2d25e88735e3
Cr-Commit-Position: refs/heads/master@{#296832}