BUG=240
TEST=try bots compile function without errors.
R=ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/1659004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@724 16f28f9a-4ce2-e073-06de-1de4eb20be90