Cosmetic cleanups in chrome/browser/policy/

chrome/browser/policy/dummy_configuration_policy_provider.h

 // Copyright (c) 2011 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_BROWSER_POLICY_DUMMY_CONFIGURATION_POLICY_PROVIDER_H_
 #define CHROME_BROWSER_POLICY_DUMMY_CONFIGURATION_POLICY_PROVIDER_H_
 #pragma once
 
 #include "base/observer_list.h"
 #include "chrome/browser/policy/configuration_policy_provider.h"
 
 namespace policy {
 
-class ConfigurationPolicyStoreInterface;
-
 class DummyConfigurationPolicyProvider : public ConfigurationPolicyProvider {
  public:
   explicit DummyConfigurationPolicyProvider(
       const PolicyDefinitionList* policy_list);
   virtual ~DummyConfigurationPolicyProvider();
 
-  virtual bool Provide(PolicyMap* map);
+  virtual bool Provide(PolicyMap* map) OVERRIDE;
 
  private:
   // ConfigurationPolicyProvider overrides:
   virtual void AddObserver(ConfigurationPolicyProvider::Observer* observer);
   virtual void RemoveObserver(ConfigurationPolicyProvider::Observer* observer);
 
   ObserverList<ConfigurationPolicyProvider::Observer, true> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(DummyConfigurationPolicyProvider);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_DUMMY_CONFIGURATION_POLICY_PROVIDER_H_