Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/api/messaging/native_messaging_policy_handler.h

 // Copyright 2014 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_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "components/policy/core/browser/configuration_policy_handler.h"
 
 namespace policy {
 class PolicyMap;
 class PolicyErrorMap;
 }  // namespace policy
 
 namespace extensions {
 
 // Implements additional checks for policies that are lists of Native Messaging
 // Hosts.
 class NativeMessagingHostListPolicyHandler
     : public policy::TypeCheckingPolicyHandler {
  public:
   NativeMessagingHostListPolicyHandler(const char* policy_name,
                                        const char* pref_path,
                                        bool allow_wildcards);
-  virtual ~NativeMessagingHostListPolicyHandler();
+  ~NativeMessagingHostListPolicyHandler() override;
 
   // ConfigurationPolicyHandler methods:
-  virtual bool CheckPolicySettings(const policy::PolicyMap& policies,
-                                   policy::PolicyErrorMap* errors) override;
-  virtual void ApplyPolicySettings(const policy::PolicyMap& policies,
-                                   PrefValueMap* prefs) override;
+  bool CheckPolicySettings(const policy::PolicyMap& policies,
+                           policy::PolicyErrorMap* errors) override;
+  void ApplyPolicySettings(const policy::PolicyMap& policies,
+                           PrefValueMap* prefs) override;
 
  protected:
   const char* pref_path() const;
 
   // Runs sanity checks on the policy value and returns it in |extension_ids|.
   bool CheckAndGetList(const policy::PolicyMap& policies,
                        policy::PolicyErrorMap* errors,
                        scoped_ptr<base::ListValue>* extension_ids);
 
  private:
   const char* pref_path_;
   bool allow_wildcards_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeMessagingHostListPolicyHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_