This will allow tests, etc to conditionally run depending on Stylo's
presence.
MozReview-Commit-ID: 3WHxNawP1qC
--HG--
extra : rebase_source : d4d983d37d3bfac1f9d465a3023b5bd5df52cd56
extra : source : 6baa88f7b1f4183ea57b9f8928556975042cad29
Metrics for Sync have been added to Firefox Health Report. If Sync is
not configured, we'll report that fact and the supported and preferred
Sync protocols (1.1 or 1.5).
If Sync is configured, we report the daily counts of sync attempts and
how many are successful vs errored. We also report daily counts of the
device types attached to the account.
--HG--
extra : rebase_source : 77170b323706a85cbe1542ac993ebdc1dba3b505
extra : amend_source : 7802e80b4fc94937fbe3f67505b447bfb048732d
Till Schneidereit
Gregory Szorc
Sebastian Hengst
Ben Kelly
Ryan VanderMeulen
Ehsan Akhgari
Mark Hammond