Revert of [ic] Experiment: disable map-specific handler cache.

Revert of [ic] Experiment: disable map-specific handler cache. (patchset #1 id:1 of https://codereview.chromium.org/2462973003/ )

Reason for revert:
Causes performance regressions (up to 10% on the "IC" bucket). :-(

Original issue's description:
> [ic] Experiment: disable map-specific handler cache.
>
> IC data handlers support most of the hot cases nowdays. Let's see if
> the map-specific code cache still help us to improve things.
>
> BUG=v8:5561
TBR=ishell@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5561
Committed: https://crrev.com/5ce976067254ff971237bc2daf46b91b7d364d51
Cr-Commit-Position: refs/heads/master@{#40701}

[Jakob Kummerow, 2016-11-02 13:23:17]

The CQ bit was checked by jkummerow@chromium.org

[Jakob Kummerow, 2016-11-02 13:23:18]

Created Revert of [ic] Experiment: disable map-specific handler cache.

[commit-bot: I haz the power, 2016-11-02 13:23:25]

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, 2016-11-02 13:49:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:19:26]

Description was changed from

==========
Revert of [ic] Experiment: disable map-specific handler cache. (patchset #1 id:1
of https://codereview.chromium.org/2462973003/ )

Reason for revert:
Causes performance regressions (up to 10% on the "IC" bucket). :-(

Original issue's description:
> [ic] Experiment: disable map-specific handler cache.
> 
> IC data handlers support most of the hot cases nowdays. Let's see if
> the map-specific code cache still help us to improve things.
> 
> BUG=v8:5561

TBR=ishell@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5561
==========

to

==========
Revert of [ic] Experiment: disable map-specific handler cache. (patchset #1 id:1
of https://codereview.chromium.org/2462973003/ )

Reason for revert:
Causes performance regressions (up to 10% on the "IC" bucket). :-(

Original issue's description:
> [ic] Experiment: disable map-specific handler cache.
>
> IC data handlers support most of the hot cases nowdays. Let's see if
> the map-specific code cache still help us to improve things.
>
> BUG=v8:5561

TBR=ishell@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5561

Committed: https://crrev.com/5ce976067254ff971237bc2daf46b91b7d364d51
Cr-Commit-Position: refs/heads/master@{#40701}
==========

[commit-bot: I haz the power, 2016-11-17 22:19:27]

Patchset 1 (id:??) landed as
https://crrev.com/5ce976067254ff971237bc2daf46b91b7d364d51
Cr-Commit-Position: refs/heads/master@{#40701}