VPLIB: Fixing a bug in ConvertYUY2TOI420 + some code clean-up  Review URL: http://webrtc-codereview.appspot.com/46001
VPLIB: Fixing a bug in ConvertYUY2TOI420 + some code clean-up 
Review URL: http://webrtc-codereview.appspot.com/46001

git-svn-id: 73da4eb46a37f6e14285f5ddaef92d4c7051e372@106 4adac7df-926f-26a2-2b94-8c16560cd09d

ikonin/WebRTC,ikonin/WebRTC,ikonin/WebRTC,ikonin/WebRTC