Revert of [platform] Change default platform max thread pool size 4 -> 8

Revert of [platform] Change default platform max thread pool size 4 -> 8 (patchset #1 id:1 of https://codereview.chromium.org/1782833006/ )

Reason for revert:
Seems to trigger bugs, needs investigation.

Original issue's description:
> [platform] Change default platform max thread pool size 4 -> 8
>
> BUG=
>
> Committed: https://crrev.com/ddc0f9982057e76dd4dc35b6ca80d2322adc9141
> Cr-Commit-Position: refs/heads/master@{#34711}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/4857110ce63c91c9a9ee22fe30da9692be00a7d5
Cr-Commit-Position: refs/heads/master@{#34714}

[Michael Lippautz, 2016-03-11 11:01:10]

Created Revert of [platform] Change default platform max thread pool size 4 -> 8

[commit-bot: I haz the power, 2016-03-11 11:01:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1780353003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1780353003/1

[commit-bot: I haz the power, 2016-03-11 11:01:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-11 11:01:58]

Description was changed from

==========
Revert of [platform] Change default platform max thread pool size 4 -> 8
(patchset #1 id:1 of https://codereview.chromium.org/1782833006/ )

Reason for revert:
Seems to trigger bugs, needs investigation.

Original issue's description:
> [platform] Change default platform max thread pool size 4 -> 8
> 
> BUG=
> 
> Committed: https://crrev.com/ddc0f9982057e76dd4dc35b6ca80d2322adc9141
> Cr-Commit-Position: refs/heads/master@{#34711}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of [platform] Change default platform max thread pool size 4 -> 8
(patchset #1 id:1 of https://codereview.chromium.org/1782833006/ )

Reason for revert:
Seems to trigger bugs, needs investigation.

Original issue's description:
> [platform] Change default platform max thread pool size 4 -> 8
>
> BUG=
>
> Committed: https://crrev.com/ddc0f9982057e76dd4dc35b6ca80d2322adc9141
> Cr-Commit-Position: refs/heads/master@{#34711}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/4857110ce63c91c9a9ee22fe30da9692be00a7d5
Cr-Commit-Position: refs/heads/master@{#34714}
==========

[commit-bot: I haz the power, 2016-03-11 11:01:59]

Patchset 1 (id:??) landed as
https://crrev.com/4857110ce63c91c9a9ee22fe30da9692be00a7d5
Cr-Commit-Position: refs/heads/master@{#34714}