Clear reference time after SetMediaTime in video-only time source.

Clear reference time after SetMediaTime in video-only time source.

Without this, after a seek we may remove valid frames because we
think we are in an underflow state.

BUG=642761
TEST=new unittest.

Committed: https://crrev.com/983881fde249f0bcc6e63426237016a98536d1ea
Cr-Commit-Position: refs/heads/master@{#417678}

[DaleCurtis, 2016-09-09 18:11:13]

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

[DaleCurtis, 2016-09-09 18:11:49]

Description was changed from

==========
Clear reference time after SetMediaTime in video-only time source.

BUG=642761
TEST=new unittest.
==========

to

==========
Clear reference time after SetMediaTime in video-only time source.

Without this, after a seek we may remove valid frames because we
think we are in an underflow state.

BUG=642761
TEST=new unittest.
==========

[watk, 2016-09-09 18:15:52]

lgtm

[DaleCurtis, 2016-09-09 18:16:05]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2016-09-09 18:16:31]

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, 2016-09-09 20:05:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-09 20:06:59]

Description was changed from

==========
Clear reference time after SetMediaTime in video-only time source.

Without this, after a seek we may remove valid frames because we
think we are in an underflow state.

BUG=642761
TEST=new unittest.
==========

to

==========
Clear reference time after SetMediaTime in video-only time source.

Without this, after a seek we may remove valid frames because we
think we are in an underflow state.

BUG=642761
TEST=new unittest.

Committed: https://crrev.com/983881fde249f0bcc6e63426237016a98536d1ea
Cr-Commit-Position: refs/heads/master@{#417678}
==========

[commit-bot: I haz the power, 2016-09-09 20:07:00]

Patchset 1 (id:??) landed as
https://crrev.com/983881fde249f0bcc6e63426237016a98536d1ea
Cr-Commit-Position: refs/heads/master@{#417678}