Revert of Do not remove write barriers for stores of old space references in most recent old space allocation.

Revert of Do not remove write barriers for stores of old space references in most recent old space allocation. (patchset #1 id:1 of https://codereview.chromium.org/1478113002/ )

Reason for revert:
Broken canary. Trying to find out root cause.

Original issue's description:
> Do not remove write barriers for stores of old space references in most recent old space allocation.
>
> BUG=chromium:561449
> LOG=n
>
> Committed: https://crrev.com/369778ec55a63ebe51e8fa8497edb5b681069b9b
> Cr-Commit-Position: refs/heads/master@{#32368}

TBR=ulan@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:561449
Committed: https://crrev.com/da56525478f1820e3da629576ab61acc5f84daac
Cr-Commit-Position: refs/heads/master@{#32406}

[Hannes Payer (out of office), 2015-11-30 13:06:02]

Created Revert of Do not remove write barriers for stores of old space
references in most recent old space allocation.

[commit-bot: I haz the power, 2015-11-30 13:07:17]

Description was changed from

==========
Revert of Do not remove write barriers for stores of old space references in
most recent old space allocation. (patchset #1 id:1 of
https://codereview.chromium.org/1478113002/ )

Reason for revert:
Broken canary. Trying to find out root cause.

Original issue's description:
> Do not remove write barriers for stores of old space references in most recent
old space allocation.
> 
> BUG=chromium:561449
> LOG=n
> 
> Committed: https://crrev.com/369778ec55a63ebe51e8fa8497edb5b681069b9b
> Cr-Commit-Position: refs/heads/master@{#32368}

TBR=ulan@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:561449
==========

to

==========
Revert of Do not remove write barriers for stores of old space references in
most recent old space allocation. (patchset #1 id:1 of
https://codereview.chromium.org/1478113002/ )

Reason for revert:
Broken canary. Trying to find out root cause.

Original issue's description:
> Do not remove write barriers for stores of old space references in most recent
old space allocation.
>
> BUG=chromium:561449
> LOG=n
>
> Committed: https://crrev.com/369778ec55a63ebe51e8fa8497edb5b681069b9b
> Cr-Commit-Position: refs/heads/master@{#32368}

TBR=ulan@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:561449

Committed: https://crrev.com/da56525478f1820e3da629576ab61acc5f84daac
Cr-Commit-Position: refs/heads/master@{#32406}
==========

[Hannes Payer (out of office), 2015-12-03 12:23:28]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1493313002/ by hpayer@chromium.org.

The reason for reverting is: Suspect for crashing found, relanding for canary
coverage..