ChromeMetricsServiceClient::IsMetricsReportingForceEnabled()
uses the command line switch force-enable-metrics-reporting

This command line ends up affecting MetricsServicesManager.
https://cs.chromium.org/chromium/src/components/metrics_services_manager/metrics_services_manager.cc?type=cs&sq=package:chromium&l=158-159

However, the command line does not get used in 
MetricsServiceAccessor::IsMetricsReportingEnabled()
https://cs.chromium.org/chromium/src/components/metrics/metrics_service_accessor.cc?type=cs&sq=package:chromium&l=16-30

This seems inconsistent.

There might be background on this that I don't know about, so I'm not fixing it myself.  Assigning to 


(For background, this came up in the context of
https://chromium-review.googlesource.com/c/chromium/src/+/865154
which needs to force MetricsServiceAccessor, in tests, to believe metrics reporting is enabled.  The author of that changelist did something to get around this; I did not block that changelist on this bug.  Nonetheless, probably something should be done here to clean this up.)