Fix for cropped matrix convolution for BottomLeft render targets.

R=bsalomon@google.com

Review URL: https://codereview.chromium.org/31083002

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11872 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed