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

chrome/browser/safe_browsing/two_phase_uploader.cc

Index: chrome/browser/safe_browsing/two_phase_uploader.cc
diff --git a/chrome/browser/safe_browsing/two_phase_uploader.cc b/chrome/browser/safe_browsing/two_phase_uploader.cc
index bbc404fa2a47d2e9574e5017fab050583a7e2d89..ac79e41f5705675e0955507977cad89c31cd5bba 100644
--- a/chrome/browser/safe_browsing/two_phase_uploader.cc
+++ b/chrome/browser/safe_browsing/two_phase_uploader.cc
@@ -33,16 +33,16 @@ class TwoPhaseUploaderImpl : public net::URLFetcherDelegate,
                        const base::FilePath& file_path,
                        const ProgressCallback& progress_callback,
                        const FinishCallback& finish_callback);
-  virtual ~TwoPhaseUploaderImpl();
+  ~TwoPhaseUploaderImpl() override;
 
   // Begins the upload process.
-  virtual void Start() override;
+  void Start() override;
 
   // net::URLFetcherDelegate implementation:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
-  virtual void OnURLFetchUploadProgress(const net::URLFetcher* source,
-                                        int64 current,
-                                        int64 total) override;
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
+  void OnURLFetchUploadProgress(const net::URLFetcher* source,
+                                int64 current,
+                                int64 total) override;
 
  private:
   void UploadMetadata();