MSE: Update DTS by the same delta as PTS during partial append window trimming

MSE: Update DTS by the same delta as PTS during partial append window trimming

To prevent spurious coded frame processing discontinuity detection for
potentially incorrect streams with coded frames having decode time >
presentation time, this change updates DTS by the same delta as PTS
during partial append window trimming.
This change is option 2 from comment 9 in bug 511128.

BUG=511128
R=dalecurtis@chromium.org
TEST=*/FrameProcessorTest.PartialAppendWindowFilterNoDiscontinuity_DtsAfterPts

Committed: https://crrev.com/8ae18b073fadded47d523c1cd6496b1224b963b5
Cr-Commit-Position: refs/heads/master@{#339812}

[wolenetz, 2015-07-21 22:25:38]

The CQ bit was checked by wolenetz@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-07-21 22:26:52]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1240323003/1

[wolenetz, 2015-07-21 22:27:20]

Please take a look at patch set 1. Thank you!

[wolenetz, 2015-07-21 23:37:40]

https://codereview.chromium.org/1240323003/diff/1/media/filters/frame_process...
File media/filters/frame_processor_unittest.cc (right):

https://codereview.chromium.org/1240323003/diff/1/media/filters/frame_process...
media/filters/frame_processor_unittest.cc:696: append_window_start_ =
base::TimeDelta::FromMilliseconds(0);
hmm. this line is superfluous. I'll remove it before landing this.

[DaleCurtis, 2015-07-21 23:47:49]

lgtm

[wolenetz, 2015-07-21 23:56:34]

Thanks for review

https://codereview.chromium.org/1240323003/diff/1/media/filters/frame_process...
File media/filters/frame_processor_unittest.cc (right):

https://codereview.chromium.org/1240323003/diff/1/media/filters/frame_process...
media/filters/frame_processor_unittest.cc:696: append_window_start_ =
base::TimeDelta::FromMilliseconds(0);
On 2015/07/21 23:37:40, wolenetz wrote:
> hmm. this line is superfluous. I'll remove it before landing this.

Done.

[wolenetz, 2015-07-21 23:56:37]

The CQ bit was checked by wolenetz@chromium.org

[wolenetz, 2015-07-21 23:56:38]

The patchset sent to the CQ was uploaded after l-g-t-m from
dalecurtis@chromium.org
Link to the patchset: https://codereview.chromium.org/1240323003/#ps20001
(title: "Fixes my self-nit")

[commit-bot: I haz the power, 2015-07-21 23:57:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1240323003/20001

[commit-bot: I haz the power, 2015-07-22 01:23:40]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-22 01:24:30]

Patchset 2 (id:??) landed as
https://crrev.com/8ae18b073fadded47d523c1cd6496b1224b963b5
Cr-Commit-Position: refs/heads/master@{#339812}