[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526
Committed: https://crrev.com/6f5262dd77fa3e767d9179123ac774dbf0d4d9ac
Cr-Commit-Position: refs/heads/master@{#438222}

[Zhiqiang Zhang (Slow), 2016-12-13 14:15:39]

Description was changed from

==========
[Autoplay] Add histograms metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526
==========

to

==========
[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526
==========

[Zhiqiang Zhang (Slow), 2016-12-13 14:15:57]

zqzhang@chromium.org changed reviewers:
+ mlamouri@chromium.org

[mlamouri (slow - plz ping), 2016-12-13 14:22:16]

lgtm

[Zhiqiang Zhang (Slow), 2016-12-13 14:35:18]

zqzhang@chromium.org changed reviewers:
+ rkaplow@chromium.org

[Zhiqiang Zhang (Slow), 2016-12-13 14:35:19]

+rkaplow: histograms.xml

[rkaplow, 2016-12-13 15:51:43]

lgtm

[Zhiqiang Zhang (Slow), 2016-12-13 15:55:57]

The CQ bit was checked by zqzhang@chromium.org

[commit-bot: I haz the power, 2016-12-13 15:56:28]

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, 2016-12-13 18:05:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481644557921170, "parent_rev":
"f0d17dcd8da881aaeb72b5442ee12490a07372a1", "commit_rev":
"cf690f3a3adbf8b9f5acbd11a6e9487ab38cf229"}

[commit-bot: I haz the power, 2016-12-13 18:05:56]

Description was changed from

==========
[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526
==========

to

==========
[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526

Review-Url: https://codereview.chromium.org/2576463002
==========

[commit-bot: I haz the power, 2016-12-13 18:05:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-13 18:08:14]

Description was changed from

==========
[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526

Review-Url: https://codereview.chromium.org/2576463002
==========

to

==========
[Autoplay] Add histogram metrics for cross-origin autoplay muted experiment

We have already landed rappor metrics for cross-origin autoplay muted
experiment, we should land corresponding histogram metrics as well.

BUG=672526

Committed: https://crrev.com/6f5262dd77fa3e767d9179123ac774dbf0d4d9ac
Cr-Commit-Position: refs/heads/master@{#438222}
==========

[commit-bot: I haz the power, 2016-12-13 18:08:15]

Patchset 1 (id:??) landed as
https://crrev.com/6f5262dd77fa3e767d9179123ac774dbf0d4d9ac
Cr-Commit-Position: refs/heads/master@{#438222}