Handles AX role for time element(re-land).

Handles AX role for time element(re-land).

This patch adds InputTimeRole and makes it be used for Input element
with time type. In order to handle Time element for AX, the current
TimeRole is used.

BUG=480861
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=195168

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=195513

[dmazzoni, 2015-05-10 06:30:06]

dmazzoni@chromium.org changed reviewers:
+ dmazzoni@chromium.org

[dmazzoni, 2015-05-10 06:30:06]

lgtm

[je_julie(Not used), 2015-05-11 00:44:12]

The CQ bit was checked by je_julie.kim@samsung.com

[commit-bot: I haz the power, 2015-05-11 00:44:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1123313004/20001

[commit-bot: I haz the power, 2015-05-11 06:00:08]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=195168

[Dirk Pranke, 2015-05-11 17:14:09]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/1134103002/ by dpranke@chromium.org.

The reason for reverting is: This is causing a reliable failure in the
chromevox_unittests on the Linu ChromeOS Tests (1) bot:

https://build.chromium.org/p/chromium.webkit/builders/Linux%20ChromiumOS%20Te...

(and is also blocking the Blink roll because of the failure).

[je_julie(Not used), 2015-05-19 01:35:44]

On 2015/05/11 17:14:09, Dirk Pranke wrote:
> A revert of this CL (patchset #2 id:20001) has been created in
> https://codereview.chromium.org/1134103002/ by mailto:dpranke@chromium.org.
> 
> The reason for reverting is: This is causing a reliable failure in the
> chromevox_unittests on the Linu ChromeOS Tests (1) bot:
> 
>
https://build.chromium.org/p/chromium.webkit/builders/Linux%20ChromiumOS%20Te...
> 
> (and is also blocking the Blink roll because of the failure).

Sorry for the inconvenience.
I temporarily disabled Input of chromvox Tests at chromium side
and verified this CL with trybot linux_chromium_chromeos_rel_ng.
After land this CL and the CL for AX Time implementation at chromium side,
the disabled TC will be enabled again.
Now, I'll try to re-land it.

[je_julie(Not used), 2015-05-19 03:36:57]

The CQ bit was checked by je_julie.kim@samsung.com

[commit-bot: I haz the power, 2015-05-19 03:37:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1123313004/20001

[commit-bot: I haz the power, 2015-05-19 05:03:00]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=195513