BUG=148
TEST=sudo LIBYUV_REPEAT=1000 nice --5 ./libyuv_unittest --gtest_filter=*R*ToI4* | sed 's/\(.*(\)\([0-9]*\)\( ms)\)/\2 - \1\2\3/g' | sort -rn | grep ms
Review URL: https://webrtc-codereview.appspot.com/936020

git-svn-id: http://libyuv.googlecode.com/svn/trunk@480 16f28f9a-4ce2-e073-06de-1de4eb20be90