[regexp] Fix regexp source escaping with preceding backslashes.

[regexp] Fix regexp source escaping with preceding backslashes.

R=franzih@chromium.org
BUG=chromium:515897
Committed: https://crrev.com/bbb2159d4c215e642ca37f2ebff9c0644ea9598c
Cr-Commit-Position: refs/heads/master@{#37664}

[Yang, 2016-07-11 12:20:28]

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

[commit-bot: I haz the power, 2016-07-11 12:20:31]

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, 2016-07-11 12:39:58]

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

[commit-bot: I haz the power, 2016-07-11 12:39:59]

Dry run: Try jobs failed on following builders:
  v8_mac_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng/builds/4755)
  v8_mac_rel_ng_triggered on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng_triggered/bui...)

[Yang, 2016-07-11 13:17:44]

Patchset #3 (id:40001) has been deleted

[Franzi, 2016-07-12 05:31:19]

lgtm

[Yang, 2016-07-12 05:31:44]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2016-07-12 05:31:57]

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, 2016-07-12 05:34:37]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-07-12 05:36:26]

Description was changed from

==========
[regexp] Fix regexp source escaping with preceding backslashes.

R=franzih@chromium.org
BUG=chromium:515897
==========

to

==========
[regexp] Fix regexp source escaping with preceding backslashes.

R=franzih@chromium.org
BUG=chromium:515897

Committed: https://crrev.com/bbb2159d4c215e642ca37f2ebff9c0644ea9598c
Cr-Commit-Position: refs/heads/master@{#37664}
==========

[commit-bot: I haz the power, 2016-07-12 05:36:27]

Patchset 2 (id:??) landed as
https://crrev.com/bbb2159d4c215e642ca37f2ebff9c0644ea9598c
Cr-Commit-Position: refs/heads/master@{#37664}