Use a service to create device management backends.

chrome/test/testing_profile.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 #pragma once
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
@@ skipping 290 matching lines @@
 
   // Creates and initializes a profile sync service if the tests require one.
   virtual TokenService* GetTokenService();
   virtual ProfileSyncService* GetProfileSyncService();
   virtual ProfileSyncService* GetProfileSyncService(
       const std::string& cros_notes);
   virtual CloudPrintProxyService* GetCloudPrintProxyService() { return NULL; }
   virtual ChromeBlobStorageContext* GetBlobStorageContext() { return NULL; }
   virtual ExtensionInfoMap* GetExtensionInfoMap() { return NULL; }
   virtual PromoCounter* GetInstantPromoCounter() { return NULL; }
+  virtual policy::DeviceManagementService* GetDeviceManagementService() {
+    return NULL;
+  }
   virtual policy::DeviceManagementPolicyProvider*
       GetDeviceManagementPolicyProvider() {
     return NULL;
   }
 
  protected:
   base::Time start_time_;
   scoped_ptr<PrefService> prefs_;
   // ref only for right type, lifecycle is managed by prefs_
   TestingPrefService* testing_prefs_;
@@ skipping 100 matching lines @@
 
   virtual ProfileId GetRuntimeId() {
     return original_profile_->GetRuntimeId();
   }
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_