Fix content_settings_supervised_provider after deprecation of MEDIASTREAM

Fix content_settings_supervised_provider after deprecation of MEDIASTREAM in favour of _MIC and _CAMERA.

BUG=464382
Committed: https://crrev.com/42c2f460d956038bb4e6edfa91ac6385f3905d50
Cr-Commit-Position: refs/heads/master@{#322559}

[knn, 2015-03-26 18:46:08]

knn@chromium.org changed reviewers:
+ markusheintz@chromium.org

[knn, 2015-03-26 18:48:58]

On 2015/03/26 18:46:08, knn wrote:
> mailto:knn@chromium.org changed reviewers:
> + mailto:markusheintz@chromium.org

PTAL.

[markusheintz_, 2015-03-27 10:08:03]

markusheintz@chromium.org changed reviewers:
+ msramek@chromium.org

[markusheintz_, 2015-03-27 10:08:04]

This LG2M.

Martin could you also have a look.

[msramek, 2015-03-27 10:18:45]

LGTM.

Sorry for introducing so much duplication. But it will soon make sense when we
change the media UI.

[markusheintz_, 2015-03-27 10:21:23]

On 2015/03/27 10:18:45, msramek wrote:
> LGTM.
> 
> Sorry for introducing so much duplication. But it will soon make sense when we
> change the media UI.

LGTM

[knn, 2015-03-27 10:54:04]

The CQ bit was checked by knn@chromium.org

[commit-bot: I haz the power, 2015-03-27 10:54:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1015723003/20001

[commit-bot: I haz the power, 2015-03-27 11:59:20]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-27 12:00:24]

Patchset 2 (id:??) landed as
https://crrev.com/42c2f460d956038bb4e6edfa91ac6385f3905d50
Cr-Commit-Position: refs/heads/master@{#322559}