Suppress slimmingpaint layout tests failures on Linux.
Suppress slimmingpaint layout tests failures on Linux.

BUG=485428, 485501
TBR=gavinp@chromium.org

Review URL: https://codereview.chromium.org/1130193002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@195047 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