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

chrome/browser/extensions/api/system_indicator/system_indicator_manager.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_API_SYSTEM_INDICATOR_SYSTEM_INDICATOR_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INDICATOR_SYSTEM_INDICATOR_MANAGER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 16 matching lines @@
 class ExtensionRegistry;
 
 // Keeps track of all the systemIndicator icons created for a given Profile
 // that are currently visible in the UI.  Use SystemIndicatorManagerFactory to
 // create a SystemIndicatorManager object.
 class SystemIndicatorManager : public ExtensionRegistryObserver,
                                public ExtensionActionAPI::Observer,
                                public KeyedService {
  public:
   SystemIndicatorManager(Profile* profile, StatusTray* status_tray);
-  virtual ~SystemIndicatorManager();
+  ~SystemIndicatorManager() override;
 
   // KeyedService implementation.
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(::SystemIndicatorApiTest, SystemIndicator);
 
   // ExtensionRegistryObserver implementation.
-  virtual void OnExtensionUnloaded(
-      content::BrowserContext* browser_context,
-      const Extension* extension,
-      UnloadedExtensionInfo::Reason reason) override;
+  void OnExtensionUnloaded(content::BrowserContext* browser_context,
+                           const Extension* extension,
+                           UnloadedExtensionInfo::Reason reason) override;
 
   // ExtensionActionAPI::Observer implementation.
-  virtual void OnExtensionActionUpdated(
+  void OnExtensionActionUpdated(
       ExtensionAction* extension_action,
       content::WebContents* web_contents,
       content::BrowserContext* browser_context) override;
 
   // Causes a call to OnStatusIconClicked for the specified extension_id.
   // Returns false if no ExtensionIndicatorIcon is found for the extension.
   bool SendClickEventToExtensionForTest(const std::string extension_id);
 
   // Causes an indicator to be shown for the given extension_action.  Creates
   // the indicator if necessary.
@@ skipping 18 matching lines @@
   // Listen to extension unloaded notifications.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemIndicatorManager);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INDICATOR_SYSTEM_INDICATOR_MANAGER_H_