Fix some virtual vs override issues in PolicyServiceStub

components/policy/core/common/policy_service_stub.h

 // 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_STUB_H_
 #define COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_STUB_H_
 
 #include "base/basictypes.h"
 #include "components/policy/core/common/policy_map.h"
 #include "components/policy/core/common/policy_service.h"
 #include "components/policy/policy_export.h"
 
 namespace policy {
 
 // A stub implementation, that is used when ENABLE_CONFIGURATION_POLICY is not
 // set. This allows client code to compile without requiring #ifdefs.
 class POLICY_EXPORT PolicyServiceStub : public PolicyService {
  public:
   PolicyServiceStub();
-  virtual ~PolicyServiceStub();
+  ~PolicyServiceStub() override;
 
-  virtual void AddObserver(PolicyDomain domain,
-                           Observer* observer) override;
+  void AddObserver(PolicyDomain domain,
+                   Observer* observer) override;
 
-  virtual void RemoveObserver(PolicyDomain domain,
-                              Observer* observer) override;
+  void RemoveObserver(PolicyDomain domain,
+                      Observer* observer) override;
 
-  virtual const PolicyMap& GetPolicies(
+  const PolicyMap& GetPolicies(
       const PolicyNamespace& ns) const override;
 
-  virtual bool IsInitializationComplete(PolicyDomain domain) const override;
+  bool IsInitializationComplete(PolicyDomain domain) const override;
 
-  virtual void RefreshPolicies(const base::Closure& callback) override;
+  void RefreshPolicies(const base::Closure& callback) override;
  private:
   const PolicyMap kEmpty_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyServiceStub);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_POLICY_SERVICE_STUB_H_