Mark Skia suppressions for auto-rebaseline.

Unreviewed gardening.

BUG=344497,352628
TBR=jcgregorio@chromium.org

Review URL: https://codereview.chromium.org/208373002

git-svn-id: svn://svn.chromium.org/blink/trunk@169756 bbb929c8-8fbe-4397-9dbb-9b2b20218538