Carry over REFERENCE_TIME for the frames using GPU Memory Buffer

Carry over REFERENCE_TIME for the frames using GPU Memory Buffer

For the frames using GPU memory buffer, the REFERENCE_TIME is lost, and
then WebMediaPlayerMS will not be able to apply rendering algorithm to
enhance the rendering smoothness.

In this CL, we make those frames to carry over the REFERENCE_TIME from
original frame.

BUG=545165
Committed: https://crrev.com/d61641b26b03f482bced3b595762f628641a0d4b
Cr-Commit-Position: refs/heads/master@{#357156}

[qiangchen, 2015-10-26 17:39:26]

Description was changed from

==========
For the frames using GPU memory buffer, the REFERENCE_TIME is lost, and
then WebMediaPlayerMS will not be able to apply rendering algorithm to
enhance the rendering smoothness.

In this CL, we make those frames to carry over the REFERENCE_TIME from
original frame.

BUG=545165
==========

to

==========
Carry over REFERENCE_TIME for the frames using GPU Memory Buffer

For the frames using GPU memory buffer, the REFERENCE_TIME is lost, and
then WebMediaPlayerMS will not be able to apply rendering algorithm to
enhance the rendering smoothness.

In this CL, we make those frames to carry over the REFERENCE_TIME from
original frame.

BUG=545165
==========

[qiangchen, 2015-10-27 21:18:31]

qiangchen@chromium.org changed reviewers:
+ dalecurtis@chromium.org, xhwang@chromium.org

[qiangchen, 2015-10-27 21:18:31]

Another catch of REFERENCE_TIME preparation. 

GPU Memory buffer support is developed simultaneously with rendering smoothness,
and thus we missed the REFERENCE_TIME preparation for it.

[DaleCurtis, 2015-10-27 21:22:45]

lgtm

[qiangchen, 2015-10-30 17:37:46]

The CQ bit was checked by qiangchen@chromium.org

[commit-bot: I haz the power, 2015-10-30 17:38:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1418923006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1418923006/1

[commit-bot: I haz the power, 2015-10-30 18:48:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-30 18:50:08]

Patchset 1 (id:??) landed as
https://crrev.com/d61641b26b03f482bced3b595762f628641a0d4b
Cr-Commit-Position: refs/heads/master@{#357156}