Handle odd width and height in the MediaSource renderer.

Handle odd width and height in the MediaSource renderer.

Chrome requires video streams to have even width and height, so
MediaSource renderer didn't work properly for streams with odd width or
height. Fixed it to round up dimensions and crop one column or one row
when screen size is odd, using Matroska's CropRight and CropBottom
attributes.

BUG=321825
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272430

[Jamie, 2014-05-22 18:19:11]

lgtm

[commit-bot: I haz the power, 2014-05-22 18:22:02]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sergeyu@chromium.org/291193008/1

[Sergey Ulanov, 2014-05-22 19:01:06]

The CQ bit was unchecked by sergeyu@chromium.org

[Sergey Ulanov, 2014-05-22 19:02:04]

Unchecked the commit bit. It won't compile until
https://codereview.chromium.org/293053015/ lands (libwebm roll that adds support
for the Crop* attributes).

[Sergey Ulanov, 2014-05-22 19:36:19]

The CQ bit was checked by sergeyu@chromium.org

[commit-bot: I haz the power, 2014-05-22 19:38:32]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sergeyu@chromium.org/291193008/1

[commit-bot: I haz the power, 2014-05-23 07:26:45]

Change committed as 272430