code_coverage: make better use of efficient logging and only log INFO

Logging is a bit special in the sense that we might not actually print
what's being logged during execution depending on the configured log
level. To make this as performant as possible, we must use logging
internal formatting so that we lazily construct strings.

This CL also lowers the logging information to INFO, since we now
validated that things are working as expected since the big rework.

Change-Id: Icb01b7e185adcf91802e3ada8026e150a60c1db5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6455972
Reviewed-by: Ali Hijazi <ahijazi@chromium.org>
Auto-Submit: Paul Semel <paulsemel@chromium.org>
Commit-Queue: Ali Hijazi <ahijazi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1447112}
NOKEYCHECK=True
GitOrigin-RevId: 5a8946977e74bcc05c729b726587f16f67cac7e0
1 file changed