Suppression for test failing on dr memory (in waterfall).

BUG=3336
R=pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/15479004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6105 4adac7df-926f-26a2-2b94-8c16560cd09d