Revert of Flock master startup.

Revert of Flock master startup. (patchset #3 id:40001 of https://codereview.chromium.org/1883813003/ )

Reason for revert:
This breaks the ability to restart internal masters (crbug.com/603584)

Original issue's description:
> Flock master startup.
> 
> Since the flock fd is inherited by the master as it starts up, this protects it even before it can drop twisted.pid. This change has been tested to work on linux.
> 
> BUG=588118
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=299916

TBR=pgervais@chromium.org,stip@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588118
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=299930

[dnj, 2016-04-14 15:24:52]

Created Revert of Flock master startup.

[commit-bot: I haz the power, 2016-04-14 15:25:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1890453006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1890453006/1

[commit-bot: I haz the power, 2016-04-14 15:25:10]

Description was changed from

==========
Revert of Flock master startup. (patchset #3 id:40001 of
https://codereview.chromium.org/1883813003/ )

Reason for revert:
This breaks the ability to restart internal masters (crbug.com/603584)

Original issue's description:
> Flock master startup.
> 
> Since the flock fd is inherited by the master as it starts up, this protects
it even before it can drop twisted.pid. This change has been tested to work on
linux.
> 
> BUG=588118
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=299916

TBR=pgervais@chromium.org,stip@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588118
==========

to

==========
Revert of Flock master startup. (patchset #3 id:40001 of
https://codereview.chromium.org/1883813003/ )

Reason for revert:
This breaks the ability to restart internal masters (crbug.com/603584)

Original issue's description:
> Flock master startup.
> 
> Since the flock fd is inherited by the master as it starts up, this protects
it even before it can drop twisted.pid. This change has been tested to work on
linux.
> 
> BUG=588118
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=299916

TBR=pgervais@chromium.org,stip@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=588118

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=299930
==========

[commit-bot: I haz the power, 2016-04-14 15:25:11]

Committed patchset #1 (id:1) as
http://src.chromium.org/viewvc/chrome?view=rev&revision=299930