[Chromecast] Update media time when playback is started

[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825

Committed: https://crrev.com/37162ce39d854bbc98fab1c6a3c6c1291066d28a
Cr-Commit-Position: refs/heads/master@{#404513}

[servolk, 2016-07-08 21:28:11]

Description was changed from

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825
==========

to

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825
==========

[servolk, 2016-07-08 21:28:11]

servolk@chromium.org changed reviewers:
+ slan@chromium.org

[slan, 2016-07-08 21:33:57]

lgtm

[servolk, 2016-07-08 22:11:22]

The CQ bit was checked by servolk@chromium.org

[commit-bot: I haz the power, 2016-07-08 22:11:57]

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, 2016-07-08 22:33:52]

Description was changed from

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825
==========

to

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825
==========

[commit-bot: I haz the power, 2016-07-08 22:33:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-08 22:34:07]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-08 22:36:45]

Description was changed from

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825
==========

to

==========
[Chromecast] Update media time when playback is started

When CMA media pipeline is started we post a task that will continuouly
update media time. But since that task is posted, it won't run right
away. In the meantime somebody might call GetMediaTime and will get
an invalid value (kNoTimestamp). To avoid this we can just set the
last_media_time_ right away for the first time when starting playback.
This will ensure that we have valid media time even before the first
UpdateMediaTime task invocation.

BUG=internal b/30035825

Committed: https://crrev.com/37162ce39d854bbc98fab1c6a3c6c1291066d28a
Cr-Commit-Position: refs/heads/master@{#404513}
==========

[commit-bot: I haz the power, 2016-07-08 22:36:46]

Patchset 1 (id:??) landed as
https://crrev.com/37162ce39d854bbc98fab1c6a3c6c1291066d28a
Cr-Commit-Position: refs/heads/master@{#404513}