DeviceExtendedAutoUpdateEnabled

Allow eligible devices that will lose Android support to be opted into Extended Automatic Updates. If the policy is Enabled, devices will opt in to Extended Automatic Updates. If the policy is Disabled or unset, devices will stop receiving updates after the original Auto Update Expiration date. This policy is only relevant for older models not automatically receiving extended updates. For more details please see https://support.google.com/chrome/a/?p=extended_updates_support.