BUG=155
TEST=sudo LIBYUV_REPEAT=1000 nice --5 ./libyuv_unittest --gtest_filter=*Rotate*
Review URL: https://webrtc-codereview.appspot.com/939029

git-svn-id: http://libyuv.googlecode.com/svn/trunk@502 16f28f9a-4ce2-e073-06de-1de4eb20be90