Revert of Fix race in UseNewEDK().

Revert of Fix race in UseNewEDK(). (patchset #1 id:1 of https://codereview.chromium.org/1646223002/ )

Reason for revert:
Broke some tests in official builds, see http://crbug.com/583040 (comment 9 has repro steps)

Original issue's description:
> Fix race in UseNewEDK().
>
> BUG=539315
>
> Committed: https://crrev.com/189f17c6d5206a9c0ef6af99f598079f637579af
> Cr-Commit-Position: refs/heads/master@{#372501}

TBR=jam@chromium.org,amistry@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=539315
Committed: https://crrev.com/fc929dbfc02425dc56c6b4cf3948434feffb578b
Cr-Commit-Position: refs/heads/master@{#372978}

[Nico, 2016-02-02 16:27:53]

Created Revert of Fix race in UseNewEDK().

[commit-bot: I haz the power, 2016-02-02 16:28:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1658233002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1658233002/1

[commit-bot: I haz the power, 2016-02-02 16:37:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1658233002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1658233002/1

[commit-bot: I haz the power, 2016-02-02 17:08:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1658233002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1658233002/1

[commit-bot: I haz the power, 2016-02-02 17:37:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1658233002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1658233002/1

[commit-bot: I haz the power, 2016-02-02 17:44:01]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-02 17:46:00]

Description was changed from

==========
Revert of Fix race in UseNewEDK(). (patchset #1 id:1 of
https://codereview.chromium.org/1646223002/ )

Reason for revert:
Broke some tests in official builds, see http://crbug.com/583040 (comment 9 has
repro steps)

Original issue's description:
> Fix race in UseNewEDK().
> 
> BUG=539315
> 
> Committed: https://crrev.com/189f17c6d5206a9c0ef6af99f598079f637579af
> Cr-Commit-Position: refs/heads/master@{#372501}

TBR=jam@chromium.org,amistry@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=539315
==========

to

==========
Revert of Fix race in UseNewEDK(). (patchset #1 id:1 of
https://codereview.chromium.org/1646223002/ )

Reason for revert:
Broke some tests in official builds, see http://crbug.com/583040 (comment 9 has
repro steps)

Original issue's description:
> Fix race in UseNewEDK().
>
> BUG=539315
>
> Committed: https://crrev.com/189f17c6d5206a9c0ef6af99f598079f637579af
> Cr-Commit-Position: refs/heads/master@{#372501}

TBR=jam@chromium.org,amistry@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=539315

Committed: https://crrev.com/fc929dbfc02425dc56c6b4cf3948434feffb578b
Cr-Commit-Position: refs/heads/master@{#372978}
==========

[commit-bot: I haz the power, 2016-02-02 17:46:03]

Patchset 1 (id:??) landed as
https://crrev.com/fc929dbfc02425dc56c6b4cf3948434feffb578b
Cr-Commit-Position: refs/heads/master@{#372978}