Computer Configuration > Administrative Templates > Google Chrome - Default Settings (users can override)
Both
HKLM\Software\Policies\Google\Chrome\Recommended
If this policy is set false, domain reliability diagnostic data reporting is disabled and no data is sent to Google. If this policy is set true or not set, domain reliability diagnostic data reporting will follow the behavior of MetricsReportingEnabled for Google Chrome or DeviceMetricsReportingEnabled for Google ChromeOS.