[builtins] fix String.prototype.indexOf with negative indices

[builtins] fix String.prototype.indexOf with negative indices

BUG=689078
Review-Url: https://codereview.chromium.org/2679173002
Cr-Commit-Position: refs/heads/master@{#43016}
Committed: https://chromium.googlesource.com/v8/v8/+/029a145fdb35061c0a1ae413532ca9dc62f4cce2

[Camillo Bruni, 2017-02-07 15:40:27]

cbruni@chromium.org changed reviewers:
+ jkummerow@chromium.org

[Camillo Bruni, 2017-02-07 15:40:28]

PTAL

[Jakob Kummerow, 2017-02-07 18:16:51]

lgtm

[Camillo Bruni, 2017-02-07 21:03:56]

The CQ bit was checked by cbruni@chromium.org

[commit-bot: I haz the power, 2017-02-07 21:04:01]

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, 2017-02-07 21:31:01]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1486501436039220,
"parent_rev": "395dfc073e6b52468c4d5fd52c08d835e5539ab7", "commit_rev":
"029a145fdb35061c0a1ae413532ca9dc62f4cce2"}

[commit-bot: I haz the power, 2017-02-07 21:31:07]

Description was changed from

==========
[builtins] fix String.prototype.indexOf with negative indices

BUG=689078
==========

to

==========
[builtins] fix String.prototype.indexOf with negative indices

BUG=689078

Review-Url: https://codereview.chromium.org/2679173002
Cr-Commit-Position: refs/heads/master@{#43016}
Committed:
https://chromium.googlesource.com/v8/v8/+/029a145fdb35061c0a1ae413532ca9dc62f...
==========

[commit-bot: I haz the power, 2017-02-07 21:31:08]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/v8/v8/+/029a145fdb35061c0a1ae413532ca9dc62f...