Revert of [heap] Remove black pages and use black areas instead.

Revert of [heap] Remove black pages and use black areas instead. (patchset #6 id:100001 of https://codereview.chromium.org/2160613002/ )

Reason for revert:
Suspected to cause crbug.com/630969

Original issue's description:
> [heap] Remove black pages and use black areas instead.
>
> BUG=630386
> LOG=n
>
> Committed: https://crrev.com/b008a0d5a3db80a854cb93d9c94d67bf2d780f2c
> Cr-Commit-Position: refs/heads/master@{#37967}

TBR=ulan@chromium.org,hpayer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=630386
Committed: https://crrev.com/5cbe34bb46141ca30780a61b207d160ac88ecbcd
Cr-Commit-Position: refs/heads/master@{#38006}

[Yang, 2016-07-25 09:46:07]

The CQ bit was checked by yangguo@chromium.org

[Yang, 2016-07-25 09:46:08]

Created Revert of [heap] Remove black pages and use black areas instead.

[commit-bot: I haz the power, 2016-07-25 09:46:11]

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, 2016-07-25 10:14:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-25 10:17:51]

Description was changed from

==========
Revert of [heap] Remove black pages and use black areas instead. (patchset #6
id:100001 of https://codereview.chromium.org/2160613002/ )

Reason for revert:
Suspected to cause crbug.com/630969

Original issue's description:
> [heap] Remove black pages and use black areas instead.
> 
> BUG=630386
> LOG=n
> 
> Committed: https://crrev.com/b008a0d5a3db80a854cb93d9c94d67bf2d780f2c
> Cr-Commit-Position: refs/heads/master@{#37967}

TBR=ulan@chromium.org,hpayer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=630386
==========

to

==========
Revert of [heap] Remove black pages and use black areas instead. (patchset #6
id:100001 of https://codereview.chromium.org/2160613002/ )

Reason for revert:
Suspected to cause crbug.com/630969

Original issue's description:
> [heap] Remove black pages and use black areas instead.
>
> BUG=630386
> LOG=n
>
> Committed: https://crrev.com/b008a0d5a3db80a854cb93d9c94d67bf2d780f2c
> Cr-Commit-Position: refs/heads/master@{#37967}

TBR=ulan@chromium.org,hpayer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=630386

Committed: https://crrev.com/5cbe34bb46141ca30780a61b207d160ac88ecbcd
Cr-Commit-Position: refs/heads/master@{#38006}
==========

[commit-bot: I haz the power, 2016-07-25 10:17:52]

Patchset 1 (id:??) landed as
https://crrev.com/5cbe34bb46141ca30780a61b207d160ac88ecbcd
Cr-Commit-Position: refs/heads/master@{#38006}