Revert of [heap] Always use the passed-in collector in CollectGarbage.

Revert of [heap] Always use the passed-in collector in CollectGarbage. (patchset #1 id:1 of https://codereview.chromium.org/2336943003/ )

Reason for revert:
Regresses jank and memory. Revert for offline analysis.

Original issue's description:
> [heap] Always use the passed-in collector in CollectGarbage.
>
> Do not overwrite a collector decision.
>
> BUG=
>
> Committed: https://crrev.com/c19abaddafb5ede5e0d5efbe608b7fc5d7c7fcd0
> Cr-Commit-Position: refs/heads/master@{#39585}

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

Committed: https://crrev.com/d32d7e3211a09f24821ffa5334b7786520fe9c33
Cr-Commit-Position: refs/heads/master@{#39770}

[Hannes Payer (out of office), 2016-09-27 12:40:54]

The CQ bit was checked by hpayer@chromium.org

[Hannes Payer (out of office), 2016-09-27 12:40:54]

Created Revert of [heap] Always use the passed-in collector in CollectGarbage.

[commit-bot: I haz the power, 2016-09-27 12:41:04]

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, 2016-09-27 13:15:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-27 13:16:00]

Description was changed from

==========
Revert of [heap] Always use the passed-in collector in CollectGarbage. (patchset
#1 id:1 of https://codereview.chromium.org/2336943003/ )

Reason for revert:
Regresses jank and memory. Revert for offline analysis.

Original issue's description:
> [heap] Always use the passed-in collector in CollectGarbage.
> 
> Do not overwrite a collector decision.
> 
> BUG=
> 
> Committed: https://crrev.com/c19abaddafb5ede5e0d5efbe608b7fc5d7c7fcd0
> Cr-Commit-Position: refs/heads/master@{#39585}

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

to

==========
Revert of [heap] Always use the passed-in collector in CollectGarbage. (patchset
#1 id:1 of https://codereview.chromium.org/2336943003/ )

Reason for revert:
Regresses jank and memory. Revert for offline analysis.

Original issue's description:
> [heap] Always use the passed-in collector in CollectGarbage.
>
> Do not overwrite a collector decision.
>
> BUG=
>
> Committed: https://crrev.com/c19abaddafb5ede5e0d5efbe608b7fc5d7c7fcd0
> Cr-Commit-Position: refs/heads/master@{#39585}

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

Committed: https://crrev.com/d32d7e3211a09f24821ffa5334b7786520fe9c33
Cr-Commit-Position: refs/heads/master@{#39770}
==========

[commit-bot: I haz the power, 2016-09-27 13:16:01]

Patchset 1 (id:??) landed as
https://crrev.com/d32d7e3211a09f24821ffa5334b7786520fe9c33
Cr-Commit-Position: refs/heads/master@{#39770}