Suppress Yosemite layout test failures.
Suppress Yosemite layout test failures.

By suppressing the failures we can work through a checked-in list
of them, and the bot will be green. The downside is that we may
miss some new failures, but we'd miss them anyway if the bot was
red and we weren't looking at it.

TBR=joelo@chromium.org, leviw@chromium.org
BUG=509025

Review URL: https://codereview.chromium.org/1230143003 .

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@198709 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