SkQP: better logging

Change-Id: If0b093cfe646f5805cc4d0660c581150fbf992f4
Reviewed-on: https://skia-review.googlesource.com/96702
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Stephan Altmueller <stephana@google.com>
3 files changed