[regexp] Match spec semantics in AdvanceStringIndex

[regexp] Match spec semantics in AdvanceStringIndex

Let AdvanceStringIndex return the incremented index instead of the
increment, and adjust all use sites.

BUG=v8:5339
Committed: https://crrev.com/fa28281266555af432e685a7810e254b42951a77
Cr-Commit-Position: refs/heads/master@{#40310}

[jgruber, 2016-10-14 08:46:23]

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

[commit-bot: I haz the power, 2016-10-14 08:46:24]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jgruber, 2016-10-14 08:49:06]

jgruber@chromium.org changed reviewers:
+ yangguo@chromium.org

[commit-bot: I haz the power, 2016-10-14 09:12:03]

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

[commit-bot: I haz the power, 2016-10-14 09:12:04]

Dry run: This issue passed the CQ dry run.

[Yang, 2016-10-14 11:31:51]

lgtm

[jgruber, 2016-10-14 11:44:22]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2016-10-14 11:44:26]

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, 2016-10-14 11:49:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-14 11:49:34]

Description was changed from

==========
[regexp] Match spec semantics in AdvanceStringIndex

Let AdvanceStringIndex return the incremented index instead of the
increment, and adjust all use sites.

BUG=v8:5339
==========

to

==========
[regexp] Match spec semantics in AdvanceStringIndex

Let AdvanceStringIndex return the incremented index instead of the
increment, and adjust all use sites.

BUG=v8:5339

Committed: https://crrev.com/fa28281266555af432e685a7810e254b42951a77
Cr-Commit-Position: refs/heads/master@{#40310}
==========

[commit-bot: I haz the power, 2016-10-14 11:49:35]

Patchset 1 (id:??) landed as
https://crrev.com/fa28281266555af432e685a7810e254b42951a77
Cr-Commit-Position: refs/heads/master@{#40310}