GitLab

We started getting some feedback reports about Night Light not
working properly but they're not useful since Night Light doesn't
log anything at all.

This CL adds some logs in the potential areas where problems are
more likely to occur, such as geolocation.

BUG=768902

Change-Id: If836f856126f4d2a9f2179873b217b944ca42674
Reviewed-on: https://chromium-review.googlesource.com/696191
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505904}