Revert of [keys] Simplify KeyAccumulator

Revert of [keys] Simplify KeyAccumulator (patchset #15 id:280001 of https://codereview.chromium.org/1995263002/ )

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/6248

Original issue's description:
> [keys] Simplify KeyAccumulator
>
> - Use KeyAccumulator::GetKeys directly instead of JSReceiver::GetKeys
> - Revert KeyAccumulator to single OrderedHashSet implementation.
> - Convert the OrderedHashSet in-place to a FixedArray
> - IndexedInterceptor indices are no longer combined and sorted with the object indices
>
> BUG=
>
> Committed: https://crrev.com/d3324df017046bcde247a5aef6d1b59bfae5908f
> Cr-Commit-Position: refs/heads/master@{#36485}

TBR=jkummerow@chromium.org,verwaest@chromium.org,cbruni@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/893524b53d43df63bca6cb9b7244d21771fadb0b
Cr-Commit-Position: refs/heads/master@{#36486}

[Michael Achenbach, 2016-05-24 17:35:36]

Created Revert of [keys] Simplify KeyAccumulator

[commit-bot: I haz the power, 2016-05-24 17:35:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2010593002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2010593002/1

[commit-bot: I haz the power, 2016-05-24 17:36:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-24 17:37:50]

Description was changed from

==========
Revert of [keys] Simplify KeyAccumulator (patchset #15 id:280001 of
https://codereview.chromium.org/1995263002/ )

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds...

Original issue's description:
> [keys] Simplify KeyAccumulator
> 
> - Use KeyAccumulator::GetKeys directly instead of JSReceiver::GetKeys
> - Revert KeyAccumulator to single OrderedHashSet implementation.
> - Convert the OrderedHashSet in-place to a FixedArray
> - IndexedInterceptor indices are no longer combined and sorted with the object
indices
> 
> BUG=
> 
> Committed: https://crrev.com/d3324df017046bcde247a5aef6d1b59bfae5908f
> Cr-Commit-Position: refs/heads/master@{#36485}

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

to

==========
Revert of [keys] Simplify KeyAccumulator (patchset #15 id:280001 of
https://codereview.chromium.org/1995263002/ )

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds...

Original issue's description:
> [keys] Simplify KeyAccumulator
>
> - Use KeyAccumulator::GetKeys directly instead of JSReceiver::GetKeys
> - Revert KeyAccumulator to single OrderedHashSet implementation.
> - Convert the OrderedHashSet in-place to a FixedArray
> - IndexedInterceptor indices are no longer combined and sorted with the object
indices
>
> BUG=
>
> Committed: https://crrev.com/d3324df017046bcde247a5aef6d1b59bfae5908f
> Cr-Commit-Position: refs/heads/master@{#36485}

TBR=jkummerow@chromium.org,verwaest@chromium.org,cbruni@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/893524b53d43df63bca6cb9b7244d21771fadb0b
Cr-Commit-Position: refs/heads/master@{#36486}
==========

[commit-bot: I haz the power, 2016-05-24 17:37:51]

Patchset 1 (id:??) landed as
https://crrev.com/893524b53d43df63bca6cb9b7244d21771fadb0b
Cr-Commit-Position: refs/heads/master@{#36486}

[Camillo Bruni, 2016-05-25 09:11:53]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2014523002/ by cbruni@chromium.org.

The reason for reverting is: relanding, fixed handle dereferencing.