Standardize usage of virtual/override/final in chrome/

chrome/service/cloud_print/cloud_print_wipeout.h

Index: chrome/service/cloud_print/cloud_print_wipeout.h
diff --git a/chrome/service/cloud_print/cloud_print_wipeout.h b/chrome/service/cloud_print/cloud_print_wipeout.h
index 62d52d5dbdd15fb3c15387624cb6d2a4b2319706..92053bf846094151866f0aacf6a01b461c469fc6 100644
--- a/chrome/service/cloud_print/cloud_print_wipeout.h
+++ b/chrome/service/cloud_print/cloud_print_wipeout.h
@@ -25,20 +25,20 @@ class CloudPrintWipeout : public CloudPrintURLFetcherDelegate {
   };
 
   CloudPrintWipeout(Client* client, const GURL& cloud_print_server_url);
-  virtual ~CloudPrintWipeout();
+  ~CloudPrintWipeout() override;
 
   void UnregisterPrinters(const std::string& auth_token,
                           const std::list<std::string>& printer_ids);
 
   // CloudPrintURLFetcher::Delegate implementation.
-  virtual CloudPrintURLFetcher::ResponseAction HandleJSONData(
+  CloudPrintURLFetcher::ResponseAction HandleJSONData(
       const net::URLFetcher* source,
       const GURL& url,
       base::DictionaryValue* json_data,
       bool succeeded) override;
-  virtual void OnRequestGiveUp() override;
-  virtual CloudPrintURLFetcher::ResponseAction OnRequestAuthError() override;
-  virtual std::string GetAuthHeader() override;
+  void OnRequestGiveUp() override;
+  CloudPrintURLFetcher::ResponseAction OnRequestAuthError() override;
+  std::string GetAuthHeader() override;
 
  private:
   void UnregisterNextPrinter();