[Mac] Fix regression where commands were disabled in full screen.

[Mac] Fix regression where commands were disabled in full screen.

This was caused by: https://codereview.chromium.org/1250403002

That CL moved where command validation happened, but the new
handler wasn't hooked up to the full screen window that gets
opened on 10.6.

Note: The 10.6 behavior can be simulated by changing the
return value of SupportsSystemFullscreen() to false.

BUG=569418
TEST=On Mac OS 10.6, check that cmd-shift-F can toggle full
screen back and forth.

Committed: https://crrev.com/4d1e70c750dc009ce1c23e76b8c2009264dba0ef
Cr-Commit-Position: refs/heads/master@{#365375}

[Alexei Svitkine (slow), 2015-12-14 17:02:12]

asvitkine@chromium.org changed reviewers:
+ jackhou@chromium.org

[Alexei Svitkine (slow), 2015-12-15 16:56:21]

asvitkine@chromium.org changed reviewers:
+ tapted@chromium.org

[Alexei Svitkine (slow), 2015-12-15 16:56:22]

+tapted as well, in case Jack is away. Whichever one of you can review this
first!

[tapted, 2015-12-15 22:12:02]

lgtm - thanks!

[Alexei Svitkine (slow), 2015-12-15 22:12:21]

The CQ bit was checked by asvitkine@chromium.org

[commit-bot: I haz the power, 2015-12-15 22:13:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1520283003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1520283003/1

[commit-bot: I haz the power, 2015-12-15 23:12:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-15 23:13:47]

Description was changed from

==========
[Mac] Fix regression where commands were disabled in full screen.

This was caused by: https://codereview.chromium.org/1250403002

That CL moved where command validation happened, but the new
handler wasn't hooked up to the full screen window that gets
opened on 10.6.

Note: The 10.6 behavior can be simulated by changing the
return value of SupportsSystemFullscreen() to false.

BUG=569418
TEST=On Mac OS 10.6, check that cmd-shift-F can toggle full
screen back and forth.
==========

to

==========
[Mac] Fix regression where commands were disabled in full screen.

This was caused by: https://codereview.chromium.org/1250403002

That CL moved where command validation happened, but the new
handler wasn't hooked up to the full screen window that gets
opened on 10.6.

Note: The 10.6 behavior can be simulated by changing the
return value of SupportsSystemFullscreen() to false.

BUG=569418
TEST=On Mac OS 10.6, check that cmd-shift-F can toggle full
screen back and forth.

Committed: https://crrev.com/4d1e70c750dc009ce1c23e76b8c2009264dba0ef
Cr-Commit-Position: refs/heads/master@{#365375}
==========

[commit-bot: I haz the power, 2015-12-15 23:13:47]

Patchset 1 (id:??) landed as
https://crrev.com/4d1e70c750dc009ce1c23e76b8c2009264dba0ef
Cr-Commit-Position: refs/heads/master@{#365375}