ARIA state/property aria-autocomplete should expose IA2_STATE_SUPPORTS_AUTOCOMPLETION.

ARIA state/property aria-autocomplete should expose IA2_STATE_SUPPORTS_AUTOCOMPLETION.

According to specs http://rawgit.com/w3c/aria/master/core-aam/core-aam.html
aria-autocomplete {"inline", "list","both"} set IA2_STATE_SUPPORTS_AUTOCOMPLETION.
aria-autocomplete {"none"} Not Mapped

Also, expose object attribute autocomplete: <value>.

This CL depends on https://codereview.chromium.org/779513007/

BUG=169559, 169563
Committed: https://crrev.com/634dc714772518f79dd0ea145bd0433072ec74b5
Cr-Commit-Position: refs/heads/master@{#308714}

[shreeramk, 2014-12-12 10:46:45]

shreeram.k@samsung.com changed reviewers:
+ aboxhall@chromium.org, dmazzoni@chromium.org

[shreeramk, 2014-12-12 10:46:45]

@aboxhall: please review. Thanks!!

[aboxhall, 2014-12-12 17:38:14]

lgtm

[shreeramk, 2014-12-12 18:59:06]

The CQ bit was checked by shreeram.k@samsung.com

[commit-bot: I haz the power, 2014-12-12 19:00:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/785943002/40001

[commit-bot: I haz the power, 2014-12-12 19:10:31]

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

[commit-bot: I haz the power, 2014-12-12 19:10:32]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[shreeramk, 2014-12-16 07:44:26]

On 2014/12/12 19:10:32, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   chromium_presubmit on tryserver.chromium.linux
>
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

@dominic: Need owners LGTM. Please review. Thanks!

[dmazzoni, 2014-12-17 01:00:52]

The CQ bit was checked by dmazzoni@chromium.org

[dmazzoni, 2014-12-17 01:00:53]

lgtm

[commit-bot: I haz the power, 2014-12-17 01:01:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/785943002/40001

[commit-bot: I haz the power, 2014-12-17 01:29:04]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2014-12-17 01:29:49]

Patchset 3 (id:??) landed as
https://crrev.com/634dc714772518f79dd0ea145bd0433072ec74b5
Cr-Commit-Position: refs/heads/master@{#308714}