Update focus when widget changes visibility.

Update focus when widget changes visibility.

ChromeVox wasn't getting a notification that the focused view changed
when the find bar was hidden. Fix this by firing a focus event whenever
a widget's visibility changes. Existing code already ensures that the
event gets fired on the right view and that no duplicate events are
generated by the time it gets to ChromeVox.

BUG=659813
Committed: https://crrev.com/17670ecf0ddf150c6a16d611e154d184fa6c27a7
Cr-Commit-Position: refs/heads/master@{#427906}

[dmazzoni, 2016-10-26 22:05:11]

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

[dmazzoni, 2016-10-26 22:06:37]

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

[commit-bot: I haz the power, 2016-10-26 22:07:22]

Dry run: 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, 2016-10-26 23:06:32]

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

[commit-bot: I haz the power, 2016-10-26 23:06:33]

Dry run: This issue passed the CQ dry run.

[David Tseng, 2016-10-27 01:18:16]

The CQ bit was checked by dtseng@chromium.org

[David Tseng, 2016-10-27 01:18:16]

lgtm

[commit-bot: I haz the power, 2016-10-27 01:18:33]

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, 2016-10-27 01:26:28]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-27 01:29:12]

Description was changed from

==========
Update focus when widget changes visibility.

ChromeVox wasn't getting a notification that the focused view changed
when the find bar was hidden. Fix this by firing a focus event whenever
a widget's visibility changes. Existing code already ensures that the
event gets fired on the right view and that no duplicate events are
generated by the time it gets to ChromeVox.

BUG=659813
==========

to

==========
Update focus when widget changes visibility.

ChromeVox wasn't getting a notification that the focused view changed
when the find bar was hidden. Fix this by firing a focus event whenever
a widget's visibility changes. Existing code already ensures that the
event gets fired on the right view and that no duplicate events are
generated by the time it gets to ChromeVox.

BUG=659813

Committed: https://crrev.com/17670ecf0ddf150c6a16d611e154d184fa6c27a7
Cr-Commit-Position: refs/heads/master@{#427906}
==========

[commit-bot: I haz the power, 2016-10-27 01:29:13]

Patchset 1 (id:??) landed as
https://crrev.com/17670ecf0ddf150c6a16d611e154d184fa6c27a7
Cr-Commit-Position: refs/heads/master@{#427906}