Standardize usage of virtual/override/final in components/

components/translate/core/browser/translate_url_fetcher.h

Index: components/translate/core/browser/translate_url_fetcher.h
diff --git a/components/translate/core/browser/translate_url_fetcher.h b/components/translate/core/browser/translate_url_fetcher.h
index 1f76bc84dfdd442ae475a6d4aacfaeda4baee655..90ed6bc4934d1d35b2bfdb78c8fe4e184d4f4308 100644
--- a/components/translate/core/browser/translate_url_fetcher.h
+++ b/components/translate/core/browser/translate_url_fetcher.h
@@ -28,7 +28,7 @@ class TranslateURLFetcher : public net::URLFetcherDelegate {
   };
 
   explicit TranslateURLFetcher(int id);
-  virtual ~TranslateURLFetcher();
+  ~TranslateURLFetcher() override;
 
   int max_retry_on_5xx() {
     return max_retry_on_5xx_;
@@ -54,7 +54,7 @@ class TranslateURLFetcher : public net::URLFetcherDelegate {
   State state() { return state_; }
 
   // net::URLFetcherDelegate implementation:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
 
  private:
   // URL to send the request.