replace OVERRIDE and FINAL with override and final in chrome/browser/extensions/

chrome/browser/extensions/external_install_manager.h

Index: chrome/browser/extensions/external_install_manager.h
diff --git a/chrome/browser/extensions/external_install_manager.h b/chrome/browser/extensions/external_install_manager.h
index 29b3fd1abaf3558324daae4f4f924e13e2fea0be..b491cd3a7517608264cc7529acf3b5f9fc34a167 100644
--- a/chrome/browser/extensions/external_install_manager.h
+++ b/chrome/browser/extensions/external_install_manager.h
@@ -57,19 +57,19 @@ class ExternalInstallManager : public ExtensionRegistryObserver,
  private:
   // ExtensionRegistryObserver implementation.
   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
-                                 const Extension* extension) OVERRIDE;
+                                 const Extension* extension) override;
   virtual void OnExtensionInstalled(content::BrowserContext* browser_context,
                                     const Extension* extension,
-                                    bool is_update) OVERRIDE;
+                                    bool is_update) override;
   virtual void OnExtensionUninstalled(
       content::BrowserContext* browser_context,
       const Extension* extension,
-      extensions::UninstallReason reason) OVERRIDE;
+      extensions::UninstallReason reason) override;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+                       const content::NotificationDetails& details) override;
 
   // Adds a global error informing the user that an external extension was
   // installed. If |is_new_profile| is true, then this error is from the first