Standardize usage of virtual/override/final in extensions/

extensions/browser/api/declarative_webrequest/webrequest_rules_registry.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 EXTENSIONS_BROWSER_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_
 #define EXTENSIONS_BROWSER_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 77 matching lines @@
       const WebRequestData& request_data_without_ids) const;
 
   // Returns which modifications should be executed on the network request
   // according to the rules registered in this registry.
   std::list<LinkedPtrEventResponseDelta> CreateDeltas(
       const InfoMap* extension_info_map,
       const WebRequestData& request_data,
       bool crosses_incognito);
 
   // Implementation of RulesRegistry:
-  virtual std::string AddRulesImpl(
+  std::string AddRulesImpl(
       const std::string& extension_id,
-      const std::vector<linked_ptr<RulesRegistry::Rule> >& rules) override;
-  virtual std::string RemoveRulesImpl(
+      const std::vector<linked_ptr<RulesRegistry::Rule>>& rules) override;
+  std::string RemoveRulesImpl(
       const std::string& extension_id,
       const std::vector<std::string>& rule_identifiers) override;
-  virtual std::string RemoveAllRulesImpl(
-      const std::string& extension_id) override;
+  std::string RemoveAllRulesImpl(const std::string& extension_id) override;
 
   // Returns true if this object retains no allocated data. Only for debugging.
   bool IsEmpty() const;
 
  protected:
-  virtual ~WebRequestRulesRegistry();
+  ~WebRequestRulesRegistry() override;
 
   // Virtual for testing:
   virtual base::Time GetExtensionInstallationTime(
       const std::string& extension_id) const;
   virtual void ClearCacheOnNavigation();
 
   void SetExtensionInfoMapForTesting(
       scoped_refptr<InfoMap> extension_info_map) {
     extension_info_map_ = extension_info_map;
   }
@@ skipping 66 matching lines @@
 
   content::BrowserContext* browser_context_;
   scoped_refptr<InfoMap> extension_info_map_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRequestRulesRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_RULES_REGISTRY_H_