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

chrome/browser/extensions/external_provider_impl.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 CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 23 matching lines @@
   // |download_location|: extensions originating from update URLs
   // If either of the origins is not supported by this provider, then it should
   // be initialized as Manifest::INVALID_LOCATION.
   ExternalProviderImpl(VisitorInterface* service,
                        const scoped_refptr<ExternalLoader>& loader,
                        Profile* profile,
                        Manifest::Location crx_location,
                        Manifest::Location download_location,
                        int creation_flags);
 
-  virtual ~ExternalProviderImpl();
+  ~ExternalProviderImpl() override;
 
   // Populates a list with providers for all known sources.
   static void CreateExternalProviders(
       VisitorInterface* service,
       Profile* profile,
       ProviderCollection* provider_list);
 
   // Sets underlying prefs and notifies provider. Only to be called by the
   // owned ExternalLoader instance.
   virtual void SetPrefs(base::DictionaryValue* prefs);
 
   // ExternalProvider implementation:
-  virtual void ServiceShutdown() override;
-  virtual void VisitRegisteredExtension() override;
-  virtual bool HasExtension(const std::string& id) const override;
-  virtual bool GetExtensionDetails(
-      const std::string& id,
-      Manifest::Location* location,
-      scoped_ptr<base::Version>* version) const override;
+  void ServiceShutdown() override;
+  void VisitRegisteredExtension() override;
+  bool HasExtension(const std::string& id) const override;
+  bool GetExtensionDetails(const std::string& id,
+                           Manifest::Location* location,
+                           scoped_ptr<base::Version>* version) const override;
 
-  virtual bool IsReady() const override;
+  bool IsReady() const override;
 
   static const char kExternalCrx[];
   static const char kExternalVersion[];
   static const char kExternalUpdateUrl[];
   static const char kInstallParam[];
   static const char kIsBookmarkApp[];
   static const char kIsFromWebstore[];
   static const char kKeepIfPresent[];
   static const char kSupportedLocales[];
   static const char kWasInstalledByOem[];
@@ skipping 37 matching lines @@
   // Whether loaded extensions should be automatically acknowledged, so that
   // the user doesn't see an alert about them.
   bool auto_acknowledge_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalProviderImpl);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_