Fix audit trail visualization bugs

Change-Id: Ib488f11980da110a03ca832203db4bc35c456887
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259417
Commit-Queue: Nathaniel Nifong <nifong@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
2 files changed