Revert of [key-accumulator] Starting to reimplement the key-accumulator

Revert of [key-accumulator] Starting to reimplement the key-accumulator (patchset #14 id:260001 of https://codereview.chromium.org/1707743002/ )

Reason for revert:
gcmole failure https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/8598

Original issue's description:
> [key-accumulator] Starting to reimplement the key-accumulator
>
> Introducing the KeyAccumulator accidentally removed some crucial fast-paths.
> This CL starts rewriting the KeyAccumulator, step-by-step introducing the
> special cases again.
>
> BUG=chromium:545503, v8:4758
> LOG=y
>
> Committed: https://crrev.com/9c61327ecb2ee41f34232632e0cac93202bae6b7
> Cr-Commit-Position: refs/heads/master@{#34532}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:545503, v8:4758
Committed: https://crrev.com/18db9af622f3cdde8e0b1a97323aca3a5fa2ca81
Cr-Commit-Position: refs/heads/master@{#34537}

[Camillo Bruni, 2016-03-07 12:44:07]

Created Revert of [key-accumulator] Starting to reimplement the key-accumulator

[commit-bot: I haz the power, 2016-03-07 12:44:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1773593003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1773593003/1

[commit-bot: I haz the power, 2016-03-07 12:44:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-07 12:46:05]

Description was changed from

==========
Revert of [key-accumulator] Starting to reimplement the key-accumulator
(patchset #14 id:260001 of https://codereview.chromium.org/1707743002/ )

Reason for revert:
gcmole failure
https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/8598

Original issue's description:
> [key-accumulator] Starting to reimplement the key-accumulator
> 
> Introducing the KeyAccumulator accidentally removed some crucial fast-paths.
> This CL starts rewriting the KeyAccumulator, step-by-step introducing the
> special cases again.
> 
> BUG=chromium:545503, v8:4758
> LOG=y
> 
> Committed: https://crrev.com/9c61327ecb2ee41f34232632e0cac93202bae6b7
> Cr-Commit-Position: refs/heads/master@{#34532}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:545503, v8:4758
==========

to

==========
Revert of [key-accumulator] Starting to reimplement the key-accumulator
(patchset #14 id:260001 of https://codereview.chromium.org/1707743002/ )

Reason for revert:
gcmole failure
https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/8598

Original issue's description:
> [key-accumulator] Starting to reimplement the key-accumulator
>
> Introducing the KeyAccumulator accidentally removed some crucial fast-paths.
> This CL starts rewriting the KeyAccumulator, step-by-step introducing the
> special cases again.
>
> BUG=chromium:545503, v8:4758
> LOG=y
>
> Committed: https://crrev.com/9c61327ecb2ee41f34232632e0cac93202bae6b7
> Cr-Commit-Position: refs/heads/master@{#34532}

TBR=verwaest@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:545503, v8:4758

Committed: https://crrev.com/18db9af622f3cdde8e0b1a97323aca3a5fa2ca81
Cr-Commit-Position: refs/heads/master@{#34537}
==========

[commit-bot: I haz the power, 2016-03-07 12:46:06]

Patchset 1 (id:??) landed as
https://crrev.com/18db9af622f3cdde8e0b1a97323aca3a5fa2ca81
Cr-Commit-Position: refs/heads/master@{#34537}