Add support for pixel format UYVY in Linux video capture

Add support for pixel format UYVY in Linux video capture

BUG=410202
TEST=Use Kinect camera on Linux. Go to page https://src.chromium.org/svn/trunk/src/chrome/test/data/webrtc/manual/peerconnection.html. Press button "Get devices". An entry "Microsoft Kinect Camera" should show up in the "Video source" list. Press button "Request GetUserMedia". You should get a stream with size 640x480 in the preview.

Committed: https://crrev.com/ce824a56750b490919571196c610a064f2e17ecb
Cr-Commit-Position: refs/heads/master@{#293178}

[magjed_chromium, 2014-09-03 15:18:52]

magjed@chromium.org changed reviewers:
+ perkj@chromium.org

[magjed_chromium, 2014-09-03 15:19:04]

PTAL

[perkj_chrome, 2014-09-03 15:24:37]

lgtm
Please add the line 
TEST= "describe here how to test this, ie use kinnect camera on linux and go to
web page.....)

[magjed_chromium, 2014-09-03 17:24:03]

The CQ bit was checked by magjed@chromium.org

[commit-bot: I haz the power, 2014-09-03 17:26:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/magjed@chromium.org/539443003/1

[commit-bot: I haz the power, 2014-09-03 18:48:23]

Committed patchset #1 (id:1) as e68d9b090a7d5a03222d34bc5230ca2da4ad1ad1

[commit-bot: I haz the power, 2014-09-10 03:27:07]

Patchset 1 (id:??) landed as
https://crrev.com/ce824a56750b490919571196c610a064f2e17ecb
Cr-Commit-Position: refs/heads/master@{#293178}