[AF] Improve logging of basic autofill types

This CL simplifies debugging sync integration tests (and possibly other
tasks).

Bug: 853688
Change-Id: I4a72855cc400d33743cf8fc00979270af2ac92e0
Reviewed-on: https://chromium-review.googlesource.com/c/1406972
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Commit-Queue: Jan Krcal <jkrcal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622073}
4 files changed