Fix symbol printing in migration / generalization tracing
Fix symbol printing in migration / generalization tracing

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/176713006

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@19636 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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