Gardening: Mark some tests that need some rebaselines

BUG=363772,169282
TBR=danakj@chromium.org,reveman@chromium.org

Review URL: https://codereview.chromium.org/259863006

git-svn-id: svn://svn.chromium.org/blink/trunk@172818 bbb929c8-8fbe-4397-9dbb-9b2b20218538