Add temporary output to debug landmines.
Add temporary output to debug landmines.

TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/450353002

git-svn-id: f98b9d40cb02301bc76fa9e1b46ee668158567fd@23009 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh