Second highest reason for checkin failure is due to failed dns query.
We're adding a metric to track how common this issue is for hostname
used by checkin apis and every other hostname.
Android change: http://ag/15364401
BUG=b:183412745
TEST=blocked android.googleapis.com in dns sink and verified that the
metric is reported in chrome://histograms
Change-Id: Ib7aa74d83624a02f4e675e26c14431d83441337f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3046942
Commit-Queue: Muhammad Hasan Khan <mhasank@chromium.org>
Reviewed-by: Yuichiro Hanada <yhanada@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Reviewed-by: Hugo Benichi <hugobenichi@google.com>
Cr-Commit-Position: refs/heads/master@{#905370}
a8663eb646