Mark various tests as needing updated baselines after r270513.

That change changed how we convert video from yuv to rgb; the new method
is significantly faster but slightly less accurate, so we have some
low-order bit diffs in the pixel results for some tests.

TBR=mtomasz@chromium.org
BUG=347422

Review URL: https://codereview.chromium.org/288093002

git-svn-id: svn://svn.chromium.org/blink/trunk@174063 bbb929c8-8fbe-4397-9dbb-9b2b20218538