SELECT element: Add HTMLSelectElement::selectedListIndex().

SELECT element: Add HTMLSelectElement::selectedListIndex().

We had multiple instances of |optionToListIndex(selectedIndex())|, which causes
two iterations over OPTIONs. selectedListIndex() returns the same value, but is
more efficient.

Committed: https://crrev.com/c97868e41b5ad5c2d12a5520f4e554d3fdeb177e
Cr-Commit-Position: refs/heads/master@{#405508}

[tkent, 2016-07-14 07:17:23]

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

[commit-bot: I haz the power, 2016-07-14 07:17:37]

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

[tkent, 2016-07-14 08:22:54]

tkent@chromium.org changed reviewers:
+ keishi@chromium.org

[tkent, 2016-07-14 08:22:54]

Keishi, would you review this please?

[commit-bot: I haz the power, 2016-07-14 09:42:19]

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

[commit-bot: I haz the power, 2016-07-14 09:42:19]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[keishi, 2016-07-14 12:19:01]

LGTM

[tkent, 2016-07-14 15:46:29]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2016-07-14 15:46:47]

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, 2016-07-14 17:08:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-14 17:12:36]

Description was changed from

==========
SELECT element: Add HTMLSelectElement::selectedListIndex().

We had multiple instances of |optionToListIndex(selectedIndex())|, which causes
two iterations over OPTIONs. selectedListIndex() returns the same value, but is
more efficient.
==========

to

==========
SELECT element: Add HTMLSelectElement::selectedListIndex().

We had multiple instances of |optionToListIndex(selectedIndex())|, which causes
two iterations over OPTIONs. selectedListIndex() returns the same value, but is
more efficient.

Committed: https://crrev.com/c97868e41b5ad5c2d12a5520f4e554d3fdeb177e
Cr-Commit-Position: refs/heads/master@{#405508}
==========

[commit-bot: I haz the power, 2016-07-14 17:12:37]

Patchset 1 (id:??) landed as
https://crrev.com/c97868e41b5ad5c2d12a5520f4e554d3fdeb177e
Cr-Commit-Position: refs/heads/master@{#405508}