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

chrome/browser/ui/webui/quota_internals/quota_internals_handler.h

Index: chrome/browser/ui/webui/quota_internals/quota_internals_handler.h
diff --git a/chrome/browser/ui/webui/quota_internals/quota_internals_handler.h b/chrome/browser/ui/webui/quota_internals/quota_internals_handler.h
index 5ee219bc28cf4d1cf2b5adb6daf8fa5c6cd14dd4..1ddfce820c07ee38a34f318ce28f7732e5ba6070 100644
--- a/chrome/browser/ui/webui/quota_internals/quota_internals_handler.h
+++ b/chrome/browser/ui/webui/quota_internals/quota_internals_handler.h
@@ -31,8 +31,8 @@ typedef std::map<std::string, std::string> Statistics;
 class QuotaInternalsHandler : public content::WebUIMessageHandler {
  public:
   QuotaInternalsHandler();
-  virtual ~QuotaInternalsHandler();
-  virtual void RegisterMessages() override;
+  ~QuotaInternalsHandler() override;
+  void RegisterMessages() override;
 
   // Called by QuotaInternalsProxy to report information to WebUI page.
   void ReportAvailableSpace(int64 available_space);