gn: Remove redundant calls to Scheduler::Increment/DecrementWorkCount().

gn: Remove redundant calls to Scheduler::Increment/DecrementWorkCount().

It is useless to call IncrementWorkCount() before ScheduleWork() and
DecrementWorkCount() at the end of a callback scheduled by
ScheduleWork(). Indeed, ScheduleWork() already calls
IncrementWorkCount() and DecrementWorkCount() is already called after
the execution of callbacks scheduled by ScheduleWork().

BUG=

Committed: https://crrev.com/b0d8fb49cc75e8e6c6c7513754afe2ac54b5c8a7
Cr-Commit-Position: refs/heads/master@{#436369}

[fdoray, 2016-11-23 14:10:43]

The CQ bit was checked by fdoray@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-23 14:10:55]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[fdoray, 2016-11-23 14:11:23]

fdoray@chromium.org changed reviewers:
+ brettw@chromium.org

[fdoray, 2016-11-23 14:11:24]

PTAL

[commit-bot: I haz the power, 2016-11-23 14:22:31]

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

[commit-bot: I haz the power, 2016-11-23 14:22:31]

Dry run: This issue passed the CQ dry run.

[brettw, 2016-12-05 18:20:10]

lgtm

[fdoray, 2016-12-05 18:22:55]

The CQ bit was checked by fdoray@chromium.org

[commit-bot: I haz the power, 2016-12-05 18:23:21]

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

[commit-bot: I haz the power, 2016-12-05 18:23:22]

This CL has an open dependency (Issue 2515383005 Patch 1). Please resolve the
dependency and try again.
If you are sure that there is no real dependency, please use one of the options
listed in https://goo.gl/9Es4OR to land the CL.

[fdoray, 2016-12-05 18:44:17]

The CQ bit was checked by fdoray@chromium.org

[commit-bot: I haz the power, 2016-12-05 18:44:38]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-12-05 18:58:32]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480963457320700, "parent_rev":
"5e94d0b1f49c8a5bb5596206cde7bf9f9dfd0b07", "commit_rev":
"d8c2ab24a669c84034155b783e29116c063c8193"}

[commit-bot: I haz the power, 2016-12-05 18:59:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-05 19:02:23]

Description was changed from

==========
gn: Remove redundant calls to Scheduler::Increment/DecrementWorkCount().

It is useless to call IncrementWorkCount() before ScheduleWork() and
DecrementWorkCount() at the end of a callback scheduled by
ScheduleWork(). Indeed, ScheduleWork() already calls
IncrementWorkCount() and DecrementWorkCount() is already called after
the execution of callbacks scheduled by ScheduleWork().

BUG=
==========

to

==========
gn: Remove redundant calls to Scheduler::Increment/DecrementWorkCount().

It is useless to call IncrementWorkCount() before ScheduleWork() and
DecrementWorkCount() at the end of a callback scheduled by
ScheduleWork(). Indeed, ScheduleWork() already calls
IncrementWorkCount() and DecrementWorkCount() is already called after
the execution of callbacks scheduled by ScheduleWork().

BUG=

Committed: https://crrev.com/b0d8fb49cc75e8e6c6c7513754afe2ac54b5c8a7
Cr-Commit-Position: refs/heads/master@{#436369}
==========

[commit-bot: I haz the power, 2016-12-05 19:02:24]

Patchset 1 (id:??) landed as
https://crrev.com/b0d8fb49cc75e8e6c6c7513754afe2ac54b5c8a7
Cr-Commit-Position: refs/heads/master@{#436369}