Selecting OptGroup label does not deselect selected item

Selecting OptGroup label does not deselect selected item

OptGroup since it is a label, if selected should not deselect selected item. In updateStateSelected, it is checked if optGroup, no UI changes are triggered.

R=keishi1, tkent
BUG=342189
TEST=On selecting optGroup label, selectedIndex should not be deselected.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=171470

[Habib Virji, 2014-03-19 10:21:32]

A check if OptGroup element, not to update UI and change other state changes of
select element.

[Habib Virji, 2014-04-08 12:50:25]

There is comment in WHATWG from Ian 'Hixie' Hickson to handle it as label. 

"It should just be a label, clicking on it should do the same as clicking on the
empty space in a four-item-high list box that only has two items, no?"

In this pretext, are changes in this CL okay?

[keishi, 2014-04-11 06:03:38]

Thanks for asking hixie. LGTM

[Habib Virji, 2014-04-11 07:03:40]

The CQ bit was checked by habib.virji@samsung.com

[commit-bot: I haz the power, 2014-04-11 07:03:47]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/habib.virji@samsung.com/204433002/1

[Habib Virji, 2014-04-11 15:01:37]

The CQ bit was unchecked by habib.virji@samsung.com

[Habib Virji, 2014-04-11 15:01:40]

The CQ bit was checked by habib.virji@samsung.com

[commit-bot: I haz the power, 2014-04-11 15:01:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/habib.virji@samsung.com/204433002/1

[Habib Virji, 2014-04-14 08:40:35]

@tkent/keishi: mac_blink_compile_dbg, mac_blink_rel, win_blink_compile_dbg are
in pending state for last 3 days. How to resolve it?

[Habib Virji, 2014-04-14 09:52:26]

The CQ bit was unchecked by habib.virji@samsung.com

[Habib Virji, 2014-04-14 14:56:44]

The CQ bit was checked by habib.virji@samsung.com

[commit-bot: I haz the power, 2014-04-14 14:56:55]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/habib.virji@samsung.com/204433002/20001

[commit-bot: I haz the power, 2014-04-14 15:09:12]

Change committed as 171470