Instantiation of OwnerKeyUtil is delegated to OwnerSettingsServiceFactory.

chrome/browser/chromeos/settings/session_manager_operation_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/chromeos/settings/session_manager_operation.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ref_counted.h"
@@ skipping 21 matching lines @@
 using testing::_;
 
 namespace chromeos {
 
 class SessionManagerOperationTest : public testing::Test {
  public:
   SessionManagerOperationTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_),
         file_thread_(content::BrowserThread::FILE, &message_loop_),
         owner_key_util_(new ownership::MockOwnerKeyUtil()),
-        validated_(false) {}
+        validated_(false) {
+    OwnerSettingsServiceFactory::GetInstance()->set_owner_key_util_for_testing(
+        owner_key_util_);
+  }
 
   virtual void SetUp() OVERRIDE {
     policy_.payload().mutable_pinned_apps()->add_app_id("fake-app");
     policy_.Build();
 
     profile_.reset(new TestingProfile());
-    OwnerSettingsService::SetOwnerKeyUtilForTesting(owner_key_util_);
     service_ = OwnerSettingsServiceFactory::GetForProfile(profile_.get());
   }
 
-  void TearDown() { OwnerSettingsService::SetOwnerKeyUtilForTesting(NULL); }
-
   MOCK_METHOD2(OnOperationCompleted,
                void(SessionManagerOperation*, DeviceSettingsService::Status));
 
   void CheckSuccessfulValidation(
       policy::DeviceCloudPolicyValidator* validator) {
     EXPECT_TRUE(validator->success());
     EXPECT_TRUE(validator->payload().get());
     EXPECT_EQ(validator->payload()->SerializeAsString(),
               policy_.payload().SerializeAsString());
     validated_ = true;
@@ skipping 201 matching lines @@
   message_loop_.RunUntilIdle();
   EXPECT_TRUE(validated_);
 
   // Loaded device settings should match what the operation received.
   ASSERT_TRUE(op.device_settings().get());
   EXPECT_EQ(policy_.payload().SerializeAsString(),
             op.device_settings()->SerializeAsString());
 }
 
 }  // namespace chromeos