Standardize usage of virtual/override/final in content/browser/

content/browser/download/download_file_impl.h

Index: content/browser/download/download_file_impl.h
diff --git a/content/browser/download/download_file_impl.h b/content/browser/download/download_file_impl.h
index 7326665d42ce70bba6575f1fbe5463c92f681ca9..9ff3f8583db3190f9b43cd8fbe13d28216d80671 100644
--- a/content/browser/download/download_file_impl.h
+++ b/content/browser/download/download_file_impl.h
@@ -44,24 +44,22 @@ class CONTENT_EXPORT DownloadFileImpl : virtual public DownloadFile {
     const net::BoundNetLog& bound_net_log,
     base::WeakPtr<DownloadDestinationObserver> observer);
 
-  virtual ~DownloadFileImpl();
+  ~DownloadFileImpl() override;
 
   // DownloadFile functions.
-  virtual void Initialize(const InitializeCallback& callback) override;
-  virtual void RenameAndUniquify(
-      const base::FilePath& full_path,
-      const RenameCompletionCallback& callback) override;
-  virtual void RenameAndAnnotate(
-      const base::FilePath& full_path,
-      const RenameCompletionCallback& callback) override;
-  virtual void Detach() override;
-  virtual void Cancel() override;
-  virtual base::FilePath FullPath() const override;
-  virtual bool InProgress() const override;
-  virtual int64 CurrentSpeed() const override;
-  virtual bool GetHash(std::string* hash) override;
-  virtual std::string GetHashState() override;
-  virtual void SetClientGuid(const std::string& guid) override;
+  void Initialize(const InitializeCallback& callback) override;
+  void RenameAndUniquify(const base::FilePath& full_path,
+                         const RenameCompletionCallback& callback) override;
+  void RenameAndAnnotate(const base::FilePath& full_path,
+                         const RenameCompletionCallback& callback) override;
+  void Detach() override;
+  void Cancel() override;
+  base::FilePath FullPath() const override;
+  bool InProgress() const override;
+  int64 CurrentSpeed() const override;
+  bool GetHash(std::string* hash) override;
+  std::string GetHashState() override;
+  void SetClientGuid(const std::string& guid) override;
 
  protected:
   // For test class overrides.