Instantiation of OwnerKeyUtil is delegated to OwnerSettingsServiceFactory.

chrome/browser/chromeos/ownership/owner_settings_service.h

Index: chrome/browser/chromeos/ownership/owner_settings_service.h
diff --git a/chrome/browser/chromeos/ownership/owner_settings_service.h b/chrome/browser/chromeos/ownership/owner_settings_service.h
index a86c084673167805c5b7c9b87db58503d953ad91..3419d4ff1b3e7dbee4934d40695b9576f55c34be 100644
--- a/chrome/browser/chromeos/ownership/owner_settings_service.h
+++ b/chrome/browser/chromeos/ownership/owner_settings_service.h
@@ -71,14 +71,11 @@ class OwnerSettingsService : public DeviceSettingsService::PrivateKeyDelegate,
 
   // Checks if the user is the device owner, without the user profile having to
   // been initialized. Should be used only if login state is in safe mode.
-  static void IsOwnerForSafeModeAsync(const std::string& user_id,
-                                      const std::string& user_hash,
-                                      const IsOwnerCallback& callback);
-
-  static scoped_refptr<ownership::OwnerKeyUtil> MakeOwnerKeyUtil();
-
-  static void SetOwnerKeyUtilForTesting(
-      const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util);
+  static void IsOwnerForSafeModeAsync(
+      const std::string& user_id,
+      const std::string& user_hash,
+      const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util,
+      const IsOwnerCallback& callback);
 
   static void SetDeviceSettingsServiceForTesting(
       DeviceSettingsService* device_settings_service);
@@ -86,7 +83,9 @@ class OwnerSettingsService : public DeviceSettingsService::PrivateKeyDelegate,
  private:
   friend class OwnerSettingsServiceFactory;
 
-  explicit OwnerSettingsService(Profile* profile);
+  OwnerSettingsService(
+      Profile* profile,
+      const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util);
 
   // Reloads private key from profile's NSS slots. Responds via call
   // to OnPrivateKeyLoaded().