Gardening: replaced-clipped-positioned-not-wrong-incremental-repainting.html fails

This one is interesting. jchaffraix's r173152 landed new expectations
for it which were invalidated 10 minutes later by enne's r173153.
Probably it just needs rebaselining.

BUG=369419
TBR=enne,jchaffraix

Review URL: https://codereview.chromium.org/264943010

git-svn-id: svn://svn.chromium.org/blink/trunk@173186 bbb929c8-8fbe-4397-9dbb-9b2b20218538