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

chrome/browser/ui/webui/extensions/extension_loader_handler.h

Index: chrome/browser/ui/webui/extensions/extension_loader_handler.h
diff --git a/chrome/browser/ui/webui/extensions/extension_loader_handler.h b/chrome/browser/ui/webui/extensions/extension_loader_handler.h
index 8351f1d80ec13e41a0bc150a256a6d7536ada0ef..15989a60d49634810488465f9d6edca9e11a4904 100644
--- a/chrome/browser/ui/webui/extensions/extension_loader_handler.h
+++ b/chrome/browser/ui/webui/extensions/extension_loader_handler.h
@@ -36,13 +36,13 @@ class ExtensionLoaderHandler : public content::WebUIMessageHandler,
                                public content::WebContentsObserver {
  public:
   explicit ExtensionLoaderHandler(Profile* profile);
-  virtual ~ExtensionLoaderHandler();
+  ~ExtensionLoaderHandler() override;
 
   // Fetches the localized values for the page and deposits them into |source|.
   void GetLocalizedValues(content::WebUIDataSource* source);
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   class FileHelper;
@@ -63,12 +63,12 @@ class ExtensionLoaderHandler : public content::WebUIMessageHandler,
   void LoadUnpackedExtensionImpl(const base::FilePath& file_path);
 
   // ExtensionErrorReporter::Observer:
-  virtual void OnLoadFailure(content::BrowserContext* browser_context,
-                             const base::FilePath& file_path,
-                             const std::string& error) override;
+  void OnLoadFailure(content::BrowserContext* browser_context,
+                     const base::FilePath& file_path,
+                     const std::string& error) override;
 
   // content::WebContentsObserver:
-  virtual void DidStartNavigationToPendingEntry(
+  void DidStartNavigationToPendingEntry(
       const GURL& url,
       content::NavigationController::ReloadType reload_type) override;