Standardize usage of virtual/override/final in storage/

storage/browser/fileapi/remove_operation_delegate.h

Index: storage/browser/fileapi/remove_operation_delegate.h
diff --git a/storage/browser/fileapi/remove_operation_delegate.h b/storage/browser/fileapi/remove_operation_delegate.h
index fc83028223b3b7f4ce6abc34651af5a7d00caab2..9625059516abe48295bdca3c49bdfac7dfe7df34 100644
--- a/storage/browser/fileapi/remove_operation_delegate.h
+++ b/storage/browser/fileapi/remove_operation_delegate.h
@@ -16,17 +16,17 @@ class RemoveOperationDelegate : public RecursiveOperationDelegate {
   RemoveOperationDelegate(FileSystemContext* file_system_context,
                           const FileSystemURL& url,
                           const StatusCallback& callback);
-  virtual ~RemoveOperationDelegate();
+  ~RemoveOperationDelegate() override;
 
   // RecursiveOperationDelegate overrides:
-  virtual void Run() override;
-  virtual void RunRecursively() override;
-  virtual void ProcessFile(const FileSystemURL& url,
-                           const StatusCallback& callback) override;
-  virtual void ProcessDirectory(const FileSystemURL& url,
-                                const StatusCallback& callback) override;
-  virtual void PostProcessDirectory(const FileSystemURL& url,
-                                    const StatusCallback& callback) override;
+  void Run() override;
+  void RunRecursively() override;
+  void ProcessFile(const FileSystemURL& url,
+                   const StatusCallback& callback) override;
+  void ProcessDirectory(const FileSystemURL& url,
+                        const StatusCallback& callback) override;
+  void PostProcessDirectory(const FileSystemURL& url,
+                            const StatusCallback& callback) override;
 
  private:
   void DidTryRemoveFile(base::File::Error error);