AGC: Add a histogram for new level

AGC: Add a histogram for new level

The histogram will log a new value every time the AGC changes level_.

BUG=webrtc:6622
Committed: https://crrev.com/3edc7f05f5a6d94b8ea2d29faa5ed65ae0a226d8
Cr-Commit-Position: refs/heads/master@{#15222}

[hlundin-webrtc, 2016-11-23 16:02:52]

henrik.lundin@webrtc.org changed reviewers:
+ peah@webrtc.org

[hlundin-webrtc, 2016-11-23 16:02:52]

Per, PTAL.

[peah-webrtc, 2016-11-24 09:20:47]

On 2016/11/23 16:02:52, hlundin-webrtc wrote:
> Per, PTAL.

Awesome!

lgtm

[hlundin-webrtc, 2016-11-24 09:29:00]

The CQ bit was checked by henrik.lundin@webrtc.org

[commit-bot: I haz the power, 2016-11-24 09:29:11]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2016-11-24 09:42:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1479979740973630, "parent_rev":
"2c8a7487109952251121eea1f15db23140e46380", "commit_rev":
"349928bf5431ec2231a5d61db29bab514cb36332"}

[commit-bot: I haz the power, 2016-11-24 09:42:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-24 09:42:54]

Description was changed from

==========
AGC: Add a histogram for new level

The histogram will log a new value every time the AGC changes level_.

BUG=webrtc:6622
==========

to

==========
AGC: Add a histogram for new level

The histogram will log a new value every time the AGC changes level_.

BUG=webrtc:6622

Committed: https://crrev.com/3edc7f05f5a6d94b8ea2d29faa5ed65ae0a226d8
Cr-Commit-Position: refs/heads/master@{#15222}
==========

[commit-bot: I haz the power, 2016-11-24 09:42:55]

Patchset 1 (id:??) landed as
https://crrev.com/3edc7f05f5a6d94b8ea2d29faa5ed65ae0a226d8
Cr-Commit-Position: refs/heads/master@{#15222}