Standardize usage of virtual/override/final in storage/

storage/browser/blob/blob_url_request_job.h

Index: storage/browser/blob/blob_url_request_job.h
diff --git a/storage/browser/blob/blob_url_request_job.h b/storage/browser/blob/blob_url_request_job.h
index f8a496888d557089fe1a88fe398da3a3a13d0611..dab61dc7759d124478715f8ce78cbcc0a72258c4 100644
--- a/storage/browser/blob/blob_url_request_job.h
+++ b/storage/browser/blob/blob_url_request_job.h
@@ -43,19 +43,16 @@ class STORAGE_EXPORT BlobURLRequestJob
                     base::MessageLoopProxy* resolving_message_loop_proxy);
 
   // net::URLRequestJob methods.
-  virtual void Start() override;
-  virtual void Kill() override;
-  virtual bool ReadRawData(net::IOBuffer* buf,
-                           int buf_size,
-                           int* bytes_read) override;
-  virtual bool GetMimeType(std::string* mime_type) const override;
-  virtual void GetResponseInfo(net::HttpResponseInfo* info) override;
-  virtual int GetResponseCode() const override;
-  virtual void SetExtraRequestHeaders(
-      const net::HttpRequestHeaders& headers) override;
+  void Start() override;
+  void Kill() override;
+  bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read) override;
+  bool GetMimeType(std::string* mime_type) const override;
+  void GetResponseInfo(net::HttpResponseInfo* info) override;
+  int GetResponseCode() const override;
+  void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override;
 
  protected:
-  virtual ~BlobURLRequestJob();
+  ~BlobURLRequestJob() override;
 
  private:
   typedef std::map<size_t, FileStreamReader*> IndexToReaderMap;