Fix client ID not persisting when being sampled out
Also add new sampling trial/feature/rates in preparation for rolling out
a new trial with new sampling rates. This trial is gated behind a pref,
and should only affect new Android Chrome UMA users. This pref is set to true when disabling metrics reporting, or on start up if metrics reporting is not consented to (including new users going through their first run). As a result, all new UMA users should have this pref set to true. -- so, UMA users that update to a new version of Chrome will not be using this new sampling rate, unless they disable and re-enable UMA.
Or, in other words, all new UMA users will have this pref set.
Bug: 1306481,1309585
Change-Id: Ia9799338410a33558a0ffbd2555bd2866e47bded
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3537771
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Luc Nguyen <lucnguyen@google.com>
Cr-Commit-Position: refs/heads/main@{#1002303}
NOKEYCHECK=True
GitOrigin-RevId: e02649f0f584bd3ba727b413ebe5ca32a5d1e918
3 files changed
