[string] Deduplicate in String.p.toLowerCase

[string] Deduplicate in String.p.toLowerCase

Restore original behavior in that strings are deduplicated in lower-case
conversion (i.e. if the string is already lower-case, the original
string is returned).

BUG=v8:6353, v8:6412
Review-Url: https://codereview.chromium.org/2891853004
Cr-Commit-Position: refs/heads/master@{#45391}
Committed: https://chromium.googlesource.com/v8/v8/+/17512c3799d689b4679ee7a2bd8e5c8f3bf28ddf

[jgruber, 2017-05-18 08:06:20]

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

[commit-bot: I haz the power, 2017-05-18 08:06:26]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jgruber, 2017-05-18 08:39:50]

jgruber@chromium.org changed reviewers:
+ adamk@chromium.org, bmeurer@chromium.org

[commit-bot: I haz the power, 2017-05-18 08:42:05]

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

[commit-bot: I haz the power, 2017-05-18 08:42:06]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2017-05-18 08:43:56]

lgtm

[jgruber, 2017-05-18 08:49:17]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2017-05-18 08:49:26]

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, 2017-05-18 08:51:03]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495097357601780, "parent_rev":
"5e9fd38564a517b3c3242ed3c8299e52ef916ced", "commit_rev":
"17512c3799d689b4679ee7a2bd8e5c8f3bf28ddf"}

[commit-bot: I haz the power, 2017-05-18 08:51:11]

Description was changed from

==========
[string] Deduplicate in String.p.toLowerCase

Restore original behavior in that strings are deduplicated in lower-case
conversion (i.e. if the string is already lower-case, the original
string is returned).

BUG=v8:6353,v8:6412
==========

to

==========
[string] Deduplicate in String.p.toLowerCase

Restore original behavior in that strings are deduplicated in lower-case
conversion (i.e. if the string is already lower-case, the original
string is returned).

BUG=v8:6353,v8:6412

Review-Url: https://codereview.chromium.org/2891853004
Cr-Commit-Position: refs/heads/master@{#45391}
Committed:
https://chromium.googlesource.com/v8/v8/+/17512c3799d689b4679ee7a2bd8e5c8f3bf...
==========

[commit-bot: I haz the power, 2017-05-18 08:51:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/17512c3799d689b4679ee7a2bd8e5c8f3bf...