[Mac] Shut down connections to WindowServer before engaging the sandbox.

[Mac] Shut down connections to WindowServer before engaging the sandbox.

This is only done for Mac OS versions 10.8 and higher.

A similar CL was landed and reverted:
https://chromium.googlesource.com/chromium/src.git/+/cef0cb9e60fb0f47562be83f8aa117899f0314d5

BUG=397642, 306348
TEST=Manually tested on 10.6-10.10.
R=avi@chromium.org, jeremy@chromium.org

Committed: https://chromium.googlesource.com/chromium/src/+/4842a0e08daada491fc519b9eade2cfd04f804ed

[Robert Sesek, 2014-10-21 23:17:24]

rsesek@chromium.org changed reviewers:
+ avi@chromium.org, jeremy@chromium.org

[Robert Sesek, 2014-10-21 23:17:25]

avi/jeremy: Whichever one of you sees it first, please. You've both seen it
before :).

[Avi (use Gerrit), 2014-10-21 23:23:17]

lgtm

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.mm
File content/common/sandbox_mac.mm (right):

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.m...
content/common/sandbox_mac.mm:338: // so do this before actually engaging the
sandbox.
You may want to comment on why you're only doing this on ML or later.

[jeremy, 2014-10-22 04:39:37]

LGTM++ !

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.mm
File content/common/sandbox_mac.mm (right):

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.m...
content/common/sandbox_mac.mm:338: // so do this before actually engaging the
sandbox.
+1 on Avi's comment.

[Robert Sesek, 2014-10-23 14:44:23]

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.mm
File content/common/sandbox_mac.mm (right):

https://codereview.chromium.org/673443002/diff/1/content/common/sandbox_mac.m...
content/common/sandbox_mac.mm:338: // so do this before actually engaging the
sandbox.
On 2014/10/21 23:23:17, Avi wrote:
> You may want to comment on why you're only doing this on ML or later.

Done.

[commit-bot: I haz the power, 2014-10-23 15:14:45]

Patchset 2 (id:??) landed as
https://crrev.com/4842a0e08daada491fc519b9eade2cfd04f804ed
Cr-Commit-Position: refs/heads/master@{#300891}

[Robert Sesek, 2014-10-23 15:15:41]

Committed patchset #2 (id:20001) manually as
4842a0e08daada491fc519b9eade2cfd04f804ed (presubmit successful).