[builtins] Move StringStartsWith to a C++ builtin.

[builtins] Move StringStartsWith to a C++ builtin.

BUG=v8:5364
Committed: https://crrev.com/08217e45a79d81a4e302a8e042309de752dab7b3
Cr-Commit-Position: refs/heads/master@{#40165}

[petermarshall, 2016-10-11 09:17:39]

The CQ bit was checked by petermarshall@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-11 09:17:47]

Dry run: 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, 2016-10-11 09:58:06]

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

[commit-bot: I haz the power, 2016-10-11 09:58:07]

Dry run: This issue passed the CQ dry run.

[petermarshall, 2016-10-11 10:30:32]

petermarshall@chromium.org changed reviewers:
+ bmeurer@chromium.org, franzih@chromium.org

[petermarshall, 2016-10-11 10:30:33]

Very similar to StringEndsWith, PTAL

[Benedikt Meurer, 2016-10-11 10:37:11]

LGTM.

[Franzi, 2016-10-11 11:04:28]

On 2016/10/11 at 10:37:11, bmeurer wrote:
> LGTM.

LGTM

[petermarshall, 2016-10-11 11:33:34]

The CQ bit was checked by petermarshall@chromium.org

[commit-bot: I haz the power, 2016-10-11 11:33:44]

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, 2016-10-11 11:36:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-11 11:36:17]

Description was changed from

==========
[builtins] Move StringStartsWith to a C++ builtin.

BUG=v8:5364
==========

to

==========
[builtins] Move StringStartsWith to a C++ builtin.

BUG=v8:5364

Committed: https://crrev.com/08217e45a79d81a4e302a8e042309de752dab7b3
Cr-Commit-Position: refs/heads/master@{#40165}
==========

[commit-bot: I haz the power, 2016-10-11 11:36:18]

Patchset 1 (id:??) landed as
https://crrev.com/08217e45a79d81a4e302a8e042309de752dab7b3
Cr-Commit-Position: refs/heads/master@{#40165}