Revert of Temporarily disable context idle cleanup.

Revert of Temporarily disable context idle cleanup. (patchset #2 id:20001 of https://codereview.chromium.org/2651703004/ )

Reason for revert:
Patch was temporary, to check UMA stat changes.

Original issue's description:
> Temporarily disable context idle cleanup.
> 
> Disables idle cleanup for the worker context to investigate the perf
> regression in 664181.
> 
> REVERT BY 01/27/2017 - This is designed to be temporary and measure
> the impact of the idle cleanup.
> 
> R=vmpstr
> BUG=664181
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
> 
> Review-Url: https://codereview.chromium.org/2651703004
> Cr-Commit-Position: refs/heads/master@{#446161}
> Committed: https://chromium.googlesource.com/chromium/src/+/4c759d5e287eda60b6ce8708ca40a22be6436800

TBR=vmpstr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=664181
Review-Url: https://codereview.chromium.org/2665713002
Cr-Commit-Position: refs/heads/master@{#447004}
Committed: https://chromium.googlesource.com/chromium/src/+/2d930bf540c443c992843ab4199af12b2e14848f

[ericrk, 2017-01-30 16:02:36]

The CQ bit was checked by ericrk@chromium.org

[ericrk, 2017-01-30 16:02:36]

Created Revert of Temporarily disable context idle cleanup.

[commit-bot: I haz the power, 2017-01-30 16:02:57]

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, 2017-01-30 16:58:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485792156422100, "parent_rev":
"2b85c623d45e745e15ff65f10788c5d57f69ec3c", "commit_rev":
"2d930bf540c443c992843ab4199af12b2e14848f"}

[commit-bot: I haz the power, 2017-01-30 16:59:16]

Description was changed from

==========
Revert of Temporarily disable context idle cleanup. (patchset #2 id:20001 of
https://codereview.chromium.org/2651703004/ )

Reason for revert:
Patch was temporary, to check UMA stat changes.

Original issue's description:
> Temporarily disable context idle cleanup.
> 
> Disables idle cleanup for the worker context to investigate the perf
> regression in 664181.
> 
> REVERT BY 01/27/2017 - This is designed to be temporary and measure
> the impact of the idle cleanup.
> 
> R=vmpstr
> BUG=664181
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
> 
> Review-Url: https://codereview.chromium.org/2651703004
> Cr-Commit-Position: refs/heads/master@{#446161}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4c759d5e287eda60b6ce8708ca40...

TBR=vmpstr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=664181
==========

to

==========
Revert of Temporarily disable context idle cleanup. (patchset #2 id:20001 of
https://codereview.chromium.org/2651703004/ )

Reason for revert:
Patch was temporary, to check UMA stat changes.

Original issue's description:
> Temporarily disable context idle cleanup.
> 
> Disables idle cleanup for the worker context to investigate the perf
> regression in 664181.
> 
> REVERT BY 01/27/2017 - This is designed to be temporary and measure
> the impact of the idle cleanup.
> 
> R=vmpstr
> BUG=664181
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
> 
> Review-Url: https://codereview.chromium.org/2651703004
> Cr-Commit-Position: refs/heads/master@{#446161}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4c759d5e287eda60b6ce8708ca40...

TBR=vmpstr@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=664181

Review-Url: https://codereview.chromium.org/2665713002
Cr-Commit-Position: refs/heads/master@{#447004}
Committed:
https://chromium.googlesource.com/chromium/src/+/2d930bf540c443c992843ab4199a...
==========

[commit-bot: I haz the power, 2017-01-30 16:59:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/2d930bf540c443c992843ab4199a...