Revert of [regexp] Remove dead code

Revert of [regexp] Remove dead code (patchset #1 id:1 of https://codereview.chromium.org/2301803003/ )

Reason for revert:
Performance regressions: crbug.com/644087
Clusterfuzz: crbug.com/644074

We'll reland all regexp changes at once when the port is complete and at least performance-neutral, since the partial port requires slow workarounds.

Original issue's description:
> [regexp] Remove dead code
>
> Remove dead code, and drop the legacy RegExp.prototype.exec implementation (the
> only differences are TO_BOOLEAN on global and sticky).
>
> BUG=v8:5339
>
> Committed: https://crrev.com/1cb2a70cb5baa7545fdf9cc4e035a6d45cb189fd
> Cr-Commit-Position: refs/heads/master@{#39121}

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5339
Committed: https://crrev.com/43a3912792e0a4d95d8c6f123122db2c0ca75c63
Cr-Commit-Position: refs/heads/master@{#39165}

[jgruber, 2016-09-05 11:55:31]

The CQ bit was checked by jgruber@chromium.org

[jgruber, 2016-09-05 11:55:31]

Created Revert of [regexp] Remove dead code

[commit-bot: I haz the power, 2016-09-05 11:55:43]

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, 2016-09-05 12:29:31]

Description was changed from

==========
Revert of [regexp] Remove dead code (patchset #1 id:1 of
https://codereview.chromium.org/2301803003/ )

Reason for revert:
Performance regressions: crbug.com/644087
Clusterfuzz: crbug.com/644074

We'll reland all regexp changes at once when the port is complete and at least
performance-neutral, since the partial port requires slow workarounds.

Original issue's description:
> [regexp] Remove dead code
> 
> Remove dead code, and drop the legacy RegExp.prototype.exec implementation
(the
> only differences are TO_BOOLEAN on global and sticky).
> 
> BUG=v8:5339
> 
> Committed: https://crrev.com/1cb2a70cb5baa7545fdf9cc4e035a6d45cb189fd
> Cr-Commit-Position: refs/heads/master@{#39121}

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5339
==========

to

==========
Revert of [regexp] Remove dead code (patchset #1 id:1 of
https://codereview.chromium.org/2301803003/ )

Reason for revert:
Performance regressions: crbug.com/644087
Clusterfuzz: crbug.com/644074

We'll reland all regexp changes at once when the port is complete and at least
performance-neutral, since the partial port requires slow workarounds.

Original issue's description:
> [regexp] Remove dead code
> 
> Remove dead code, and drop the legacy RegExp.prototype.exec implementation
(the
> only differences are TO_BOOLEAN on global and sticky).
> 
> BUG=v8:5339
> 
> Committed: https://crrev.com/1cb2a70cb5baa7545fdf9cc4e035a6d45cb189fd
> Cr-Commit-Position: refs/heads/master@{#39121}

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5339
==========

[commit-bot: I haz the power, 2016-09-05 12:29:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-05 12:29:47]

Description was changed from

==========
Revert of [regexp] Remove dead code (patchset #1 id:1 of
https://codereview.chromium.org/2301803003/ )

Reason for revert:
Performance regressions: crbug.com/644087
Clusterfuzz: crbug.com/644074

We'll reland all regexp changes at once when the port is complete and at least
performance-neutral, since the partial port requires slow workarounds.

Original issue's description:
> [regexp] Remove dead code
> 
> Remove dead code, and drop the legacy RegExp.prototype.exec implementation
(the
> only differences are TO_BOOLEAN on global and sticky).
> 
> BUG=v8:5339
> 
> Committed: https://crrev.com/1cb2a70cb5baa7545fdf9cc4e035a6d45cb189fd
> Cr-Commit-Position: refs/heads/master@{#39121}

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5339
==========

to

==========
Revert of [regexp] Remove dead code (patchset #1 id:1 of
https://codereview.chromium.org/2301803003/ )

Reason for revert:
Performance regressions: crbug.com/644087
Clusterfuzz: crbug.com/644074

We'll reland all regexp changes at once when the port is complete and at least
performance-neutral, since the partial port requires slow workarounds.

Original issue's description:
> [regexp] Remove dead code
>
> Remove dead code, and drop the legacy RegExp.prototype.exec implementation
(the
> only differences are TO_BOOLEAN on global and sticky).
>
> BUG=v8:5339
>
> Committed: https://crrev.com/1cb2a70cb5baa7545fdf9cc4e035a6d45cb189fd
> Cr-Commit-Position: refs/heads/master@{#39121}

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5339

Committed: https://crrev.com/43a3912792e0a4d95d8c6f123122db2c0ca75c63
Cr-Commit-Position: refs/heads/master@{#39165}
==========

[commit-bot: I haz the power, 2016-09-05 12:29:48]

Patchset 1 (id:??) landed as
https://crrev.com/43a3912792e0a4d95d8c6f123122db2c0ca75c63
Cr-Commit-Position: refs/heads/master@{#39165}