Video Player: Set proper aria-label to the toggle button for subtitles.

Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using inspector.

Committed: https://crrev.com/bad01e0d4f1de8fde606a30d07739917e4be1e05
Cr-Commit-Position: refs/heads/master@{#383705}

[fukino, 2016-03-29 09:13:37]

Description was changed from

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.
==========

to

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be
distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.
==========

[fukino, 2016-03-29 09:14:06]

fukino@chromium.org changed reviewers:
+ hirono@chromium.org

[fukino, 2016-03-29 09:14:07]

hirono@, could you take a look? Thanks!

[hirono, 2016-03-29 10:22:53]

lgtm, thank you for fixing this!

[fukino, 2016-03-29 12:27:27]

On 2016/03/29 10:22:53, hirono wrote:
> lgtm, thank you for fixing this!

Thanks!

[fukino, 2016-03-29 12:27:48]

The CQ bit was checked by fukino@chromium.org

[commit-bot: I haz the power, 2016-03-29 12:27:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1840983002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1840983002/1

[commit-bot: I haz the power, 2016-03-29 12:55:22]

Description was changed from

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be
distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.
==========

to

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be
distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.
==========

[commit-bot: I haz the power, 2016-03-29 12:55:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-29 12:57:12]

Description was changed from

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be
distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.
==========

to

==========
Video Player: Set proper aria-label to the toggle button for subtitles.

This CL fixes following problems about aria-label of subtitles button.
- VIDEO_PLAYER_SUBTITLES_BUTTON_LABEL was used, but it actually is undefined.
- The button has two states since it is toggle button, but it couldn't be
distinguished by the aria-label (and spoken feedback)

BUG=598613
TEST=manually enable/disable subtitles button and check the aria-label using
inspector.

Committed: https://crrev.com/bad01e0d4f1de8fde606a30d07739917e4be1e05
Cr-Commit-Position: refs/heads/master@{#383705}
==========

[commit-bot: I haz the power, 2016-03-29 12:57:13]

Patchset 1 (id:??) landed as
https://crrev.com/bad01e0d4f1de8fde606a30d07739917e4be1e05
Cr-Commit-Position: refs/heads/master@{#383705}