Fix underflow duration calculation for MSE.

Fix underflow duration calculation for MSE.

http://crrev.com/452113 extended underflow duration tracking for MSE,
but did not actually enable the timer :(

BUG=641633
TEST=manual

Review-Url: https://codereview.chromium.org/2713323002
Cr-Commit-Position: refs/heads/master@{#453001}
Committed: https://chromium.googlesource.com/chromium/src/+/d06eabc40101635e329c9e27e5008b123fdd815a

[DaleCurtis, 2017-02-24 22:08:30]

Description was changed from

==========
Fix underflow duration calculation for MSE.

It was all zeros...

BUG=641633
TEST=manual
==========

to

==========
Fix underflow duration calculation for MSE.

http://crrev.com/452113 extended underflow duration tracking for MSE,
but did not actually enable the timer :(

BUG=641633
TEST=manual
==========

[DaleCurtis, 2017-02-24 22:08:35]

dalecurtis@chromium.org changed reviewers:
+ sandersd@chromium.org

[sandersd (OOO until July 31), 2017-02-24 22:13:38]

lgtm

[DaleCurtis, 2017-02-24 22:19:49]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2017-02-24 22:20:21]

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, 2017-02-24 23:43:34]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1487974789468760,
"parent_rev": "5a963036e01f36fef69a05accdf2725e631d0ed0", "commit_rev":
"d06eabc40101635e329c9e27e5008b123fdd815a"}

[commit-bot: I haz the power, 2017-02-24 23:44:15]

Description was changed from

==========
Fix underflow duration calculation for MSE.

http://crrev.com/452113 extended underflow duration tracking for MSE,
but did not actually enable the timer :(

BUG=641633
TEST=manual
==========

to

==========
Fix underflow duration calculation for MSE.

http://crrev.com/452113 extended underflow duration tracking for MSE,
but did not actually enable the timer :(

BUG=641633
TEST=manual

Review-Url: https://codereview.chromium.org/2713323002
Cr-Commit-Position: refs/heads/master@{#453001}
Committed:
https://chromium.googlesource.com/chromium/src/+/d06eabc40101635e329c9e27e500...
==========

[commit-bot: I haz the power, 2017-02-24 23:44:15]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/d06eabc40101635e329c9e27e500...