BUG=253
TEST=libyuv_test,try bots
R=fbarchard@google.com

Review URL: https://webrtc-codereview.appspot.com/2013005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@762 16f28f9a-4ce2-e073-06de-1de4eb20be90