[zip] Add log messages

BUG=chromium:1295127
TEST=autoninja -C out/Default zlib_unittests && out/Default/zlib_unittests

Change-Id: I08f8c306beaa56ffb3a5424f23dfe3d000cf7229
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3458044


Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: François Degros <fdegros@chromium.org>
Cr-Commit-Position: refs/heads/main@{#970340}
NOKEYCHECK=True
GitOrigin-RevId: 43d9ed269917c0b59d93cb33b2d51193635d4e98