Rebaseline css3/filters tests to accommodate skia changes r11158 and r11249.

TBR=fmalita

Review URL: https://codereview.chromium.org/25888002

git-svn-id: svn://svn.chromium.org/blink/trunk@158820 bbb929c8-8fbe-4397-9dbb-9b2b20218538