Gardening: Mark animation-direction-normal.html as failing on mac debug
Gardening: Mark animation-direction-normal.html as failing on mac debug

BUG=255724
TBR=serya

Review URL: https://codereview.chromium.org/18182013

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@153284 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk