Add OVERRIDE to chrome/browser/ui/webui/.

chrome/browser/ui/webui/options/handler_options_handler.h

Index: chrome/browser/ui/webui/options/handler_options_handler.h
diff --git a/chrome/browser/ui/webui/options/handler_options_handler.h b/chrome/browser/ui/webui/options/handler_options_handler.h
index 4b37abcd6816cddd66989833f56923e4ad3d6f5f..b6d73883c4bd5203ec709f45bd5c682180abe8ee 100644
--- a/chrome/browser/ui/webui/options/handler_options_handler.h
+++ b/chrome/browser/ui/webui/options/handler_options_handler.h
@@ -22,14 +22,15 @@ class HandlerOptionsHandler : public OptionsPageUIHandler {
   virtual ~HandlerOptionsHandler();
 
   // OptionsPageUIHandler implementation.
-  virtual void GetLocalizedValues(base::DictionaryValue* localized_strings);
-  virtual void Initialize();
-  virtual void RegisterMessages();
+  virtual void GetLocalizedValues(
+      base::DictionaryValue* localized_strings) OVERRIDE;
+  virtual void Initialize() OVERRIDE;
+  virtual void RegisterMessages() OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
  private:
   // Called when the user toggles whether custom handlers are enabled.