Mark svg/animations/smil-leak-* as flaky.
Mark svg/animations/smil-leak-* as flaky.

BUG=516364
TBR=adamk@chromium.org
NO_TRY=true

Review URL: https://codereview.chromium.org/1263353003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@199905 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