Standardize usage of virtual/override/final in storage/

storage/browser/blob/view_blob_internals_job.h

Index: storage/browser/blob/view_blob_internals_job.h
diff --git a/storage/browser/blob/view_blob_internals_job.h b/storage/browser/blob/view_blob_internals_job.h
index 9fc385000f21be533afcb1f545e472e890a47f9c..4ab1e30cc8601e8cc821324f8a15bd34e72828f8 100644
--- a/storage/browser/blob/view_blob_internals_job.h
+++ b/storage/browser/blob/view_blob_internals_job.h
@@ -29,17 +29,16 @@ class STORAGE_EXPORT ViewBlobInternalsJob
                        net::NetworkDelegate* network_delegate,
                        BlobStorageContext* blob_storage_context);
 
-  virtual void Start() override;
-  virtual int GetData(std::string* mime_type,
-                      std::string* charset,
-                      std::string* data,
-                      const net::CompletionCallback& callback) const override;
-  virtual bool IsRedirectResponse(GURL* location,
-                                  int* http_status_code) override;
-  virtual void Kill() override;
+  void Start() override;
+  int GetData(std::string* mime_type,
+              std::string* charset,
+              std::string* data,
+              const net::CompletionCallback& callback) const override;
+  bool IsRedirectResponse(GURL* location, int* http_status_code) override;
+  void Kill() override;
 
  private:
-  virtual ~ViewBlobInternalsJob();
+  ~ViewBlobInternalsJob() override;
 
   void GenerateHTML(std::string* out) const;
   static void GenerateHTMLForBlobData(const BlobData& blob_data,