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

chrome/browser/extensions/shared_user_script_master.h

Index: chrome/browser/extensions/shared_user_script_master.h
diff --git a/chrome/browser/extensions/shared_user_script_master.h b/chrome/browser/extensions/shared_user_script_master.h
index 43b99aa6c82b9ab3ae579cf4d59ff8057df2d1f3..bd20bb7062bee34755f0ea9bff580bea07881b7f 100644
--- a/chrome/browser/extensions/shared_user_script_master.h
+++ b/chrome/browser/extensions/shared_user_script_master.h
@@ -29,19 +29,18 @@ class ExtensionRegistry;
 class SharedUserScriptMaster : public ExtensionRegistryObserver {
  public:
   explicit SharedUserScriptMaster(Profile* profile);
-  virtual ~SharedUserScriptMaster();
+  ~SharedUserScriptMaster() override;
 
   // Provides access to loader state method: scripts_ready().
   bool scripts_ready() const { return loader_.scripts_ready(); }
 
  private:
   // ExtensionRegistryObserver implementation.
-  virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
-                                 const Extension* extension) override;
-  virtual void OnExtensionUnloaded(
-      content::BrowserContext* browser_context,
-      const Extension* extension,
-      UnloadedExtensionInfo::Reason reason) override;
+  void OnExtensionLoaded(content::BrowserContext* browser_context,
+                         const Extension* extension) override;
+  void OnExtensionUnloaded(content::BrowserContext* browser_context,
+                           const Extension* extension,
+                           UnloadedExtensionInfo::Reason reason) override;
 
   // Gets an extension's scripts' metadata; i.e., gets a list of UserScript
   // objects that contains script info, but not the contents of the scripts.