Blur use circular buffer of Cumulative Sums instead of full frame for better cache coherency.
BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/646008

git-svn-id: http://libyuv.googlecode.com/svn/trunk@283 16f28f9a-4ce2-e073-06de-1de4eb20be90
5 files changed