Always record for tests and whitelist expired histograms through field trial.
Expired histogram logic is disabled by default and is enabled by field trial.
The field trial will enable it for all the users. This is done so that
unit tests don't use expired histogram logic otherwise unit tests can fail
unexpectedly when histograms become expired.
The same field trial also has "whitelist" param that will contain names of
expired histograms that should be recorded.
Commit-Queue: Gayane Petrosyan <firstname.lastname@example.org>
Reviewed-by: Lei Zhang <email@example.com>
Reviewed-by: Rohit Rao <firstname.lastname@example.org>
Reviewed-by: Alexei Svitkine <email@example.com>
6 files changed