Add extension scanner in chrome_cleaner

This updates the logging/proto and scanner subdirs

R=csharp@chromium.org

Bug: 830892
Change-Id: I15b1cfe9fdb123553b4d00c0e42395adbc068db3
Reviewed-on: https://chromium-review.googlesource.com/c/1338406
Commit-Queue: Joe Mason <joenotcharles@google.com>
Reviewed-by: Chris Sharp <csharp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610192}
12 files changed