Suppressed more flaky and failing tests.

BUG=316425,316460
TBR=antonm@chromium.org,yhirano@chromium.org

Review URL: https://codereview.chromium.org/59743010

git-svn-id: svn://svn.chromium.org/blink/trunk@161573 bbb929c8-8fbe-4397-9dbb-9b2b20218538