Remove some unneeded media.AVDA histograms.

Remove some unneeded media.AVDA histograms.

We no longer need this data and/or the historical data should be
sufficient if we need it in the future.

BUG=644396
Committed: https://crrev.com/e74674f03a4662d91b604e5860bc597a49142526
Cr-Commit-Position: refs/heads/master@{#426970}

[watk, 2016-10-22 00:34:27]

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

[commit-bot: I haz the power, 2016-10-22 00:35:11]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[watk, 2016-10-22 00:36:12]

watk@chromium.org changed reviewers:
+ holte@chromium.org, liberato@chromium.org

[Steven Holte, 2016-10-22 00:37:53]

lgtm

[liberato (no reviews please), 2016-10-22 01:10:13]

lgtm

[watk, 2016-10-22 01:17:52]

The CQ bit was unchecked by watk@chromium.org

[watk, 2016-10-22 01:17:52]

The CQ bit was checked by watk@chromium.org

[commit-bot: I haz the power, 2016-10-22 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, 2016-10-22 04:31:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-22 04:38:00]

Description was changed from

==========
Remove some unneeded media.AVDA histograms.

We no longer need this data and/or the historical data should be
sufficient if we need it in the future.

BUG=644396
==========

to

==========
Remove some unneeded media.AVDA histograms.

We no longer need this data and/or the historical data should be
sufficient if we need it in the future.

BUG=644396

Committed: https://crrev.com/e74674f03a4662d91b604e5860bc597a49142526
Cr-Commit-Position: refs/heads/master@{#426970}
==========

[commit-bot: I haz the power, 2016-10-22 04:38:00]

Patchset 1 (id:??) landed as
https://crrev.com/e74674f03a4662d91b604e5860bc597a49142526
Cr-Commit-Position: refs/heads/master@{#426970}