Revert of [esnext] ship String.prototype.padStart / String.prototype.padEnd

Revert of [esnext] ship String.prototype.padStart / String.prototype.padEnd (patchset #1 id:1 of https://codereview.chromium.org/2382193002/ )

Reason for revert:
Causes several GC bugs, e.g. https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20gc%20stress/builds/2858/steps/Mjsunit/logs/debug-constructed-by

Original issue's description:
> [esnext] ship String.prototype.padStart / String.prototype.padEnd
>
> Enable the --harmony-string-padding flag by default
>
> BUG=v8:4954
> R=adamk@chromium.org, littledan@chromium.org
>
> Committed: https://crrev.com/8352a0feaccfd9a19f3b38564ed2c0859dd6e3d5
> Cr-Commit-Position: refs/heads/master@{#40060}

TBR=littledan@chromium.org,adamk@chromium.org,foolip@chromium.org,caitp@igalia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4954
Committed: https://crrev.com/e5aade74fec6adc11f040ec7f1850dc5c7ac37c1
Cr-Commit-Position: refs/heads/master@{#40071}

[Clemens Hammacher, 2016-10-07 08:39:13]

The CQ bit was checked by clemensh@chromium.org

[Clemens Hammacher, 2016-10-07 08:39:13]

Created Revert of [esnext] ship String.prototype.padStart /
String.prototype.padEnd

[commit-bot: I haz the power, 2016-10-07 08:39:20]

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, 2016-10-07 08:39:20]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-10-07 08:39:21]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-v8-committers".
Note that this has nothing to do with OWNERS files.

[titzer, 2016-10-07 08:40:48]

On 2016/10/07 08:39:21, commit-bot: I haz the power wrote:
> No L-G-T-M from a valid reviewer yet. 
> CQ run can only be started by full committers or once the patch has
> received an L-G-T-M from a full committer.
> Even if an L-G-T-M may have been provided, it was from a non-committer,
> _not_ a full super star committer.
> Committers are members of the group "project-v8-committers".
> Note that this has nothing to do with OWNERS files.

lgtm

[Clemens Hammacher, 2016-10-07 08:41:11]

The CQ bit was checked by clemensh@chromium.org

[commit-bot: I haz the power, 2016-10-07 08:41:20]

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, 2016-10-07 08:41:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-07 08:41:48]

Description was changed from

==========
Revert of [esnext] ship String.prototype.padStart / String.prototype.padEnd
(patchset #1 id:1 of https://codereview.chromium.org/2382193002/ )

Reason for revert:
Causes several GC bugs, e.g.
https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20arm64%...

Original issue's description:
> [esnext] ship String.prototype.padStart / String.prototype.padEnd
> 
> Enable the --harmony-string-padding flag by default
> 
> BUG=v8:4954
> R=adamk@chromium.org, littledan@chromium.org
> 
> Committed: https://crrev.com/8352a0feaccfd9a19f3b38564ed2c0859dd6e3d5
> Cr-Commit-Position: refs/heads/master@{#40060}

TBR=littledan@chromium.org,adamk@chromium.org,foolip@chromium.org,caitp@igali...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4954
==========

to

==========
Revert of [esnext] ship String.prototype.padStart / String.prototype.padEnd
(patchset #1 id:1 of https://codereview.chromium.org/2382193002/ )

Reason for revert:
Causes several GC bugs, e.g.
https://build.chromium.org/p/client.v8.ports/builders/V8%20Linux%20-%20arm64%...

Original issue's description:
> [esnext] ship String.prototype.padStart / String.prototype.padEnd
>
> Enable the --harmony-string-padding flag by default
>
> BUG=v8:4954
> R=adamk@chromium.org, littledan@chromium.org
>
> Committed: https://crrev.com/8352a0feaccfd9a19f3b38564ed2c0859dd6e3d5
> Cr-Commit-Position: refs/heads/master@{#40060}

TBR=littledan@chromium.org,adamk@chromium.org,foolip@chromium.org,caitp@igali...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4954

Committed: https://crrev.com/e5aade74fec6adc11f040ec7f1850dc5c7ac37c1
Cr-Commit-Position: refs/heads/master@{#40071}
==========

[commit-bot: I haz the power, 2016-10-07 08:41:48]

Patchset 1 (id:??) landed as
https://crrev.com/e5aade74fec6adc11f040ec7f1850dc5c7ac37c1
Cr-Commit-Position: refs/heads/master@{#40071}