Implemented OwnerSettingsService::Set() method.

chrome/browser/chromeos/attestation/attestation_policy_browsertest.cc

 // Copyright 2013 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 "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/attestation/platform_verification_flow.h"
@@ skipping 22 matching lines @@
 
 class AttestationDevicePolicyTest
     : public DevicePolicyCrosBrowserTest,
       public chromeos::DeviceSettingsService::Observer {
  public:
     // DeviceSettingsService::Observer
     virtual void OwnershipStatusChanged() override {}
     virtual void DeviceSettingsUpdated() override {
       operation_complete_ = true;
     }
+    virtual void OnDeviceSettingsServiceShutdown() override {}
 
  protected:
   AttestationDevicePolicyTest() : operation_complete_(false) {}
 
   virtual void SetUpInProcessBrowserTestFixture() override {
     DevicePolicyCrosBrowserTest::SetUpInProcessBrowserTestFixture();
     InstallOwnerKey();
     RefreshDevicePolicy();
   }
 
@@ skipping 62 matching lines @@
             SyncContentProtectionAttestation());
 
   GetDevicePolicyProto()->set_content_protection_enabled(true);
   SyncRefreshDevicePolicy();
 
   EXPECT_NE(PlatformVerificationFlow::POLICY_REJECTED,
             SyncContentProtectionAttestation());
 }
 
 } // namespace policy