Delete unused method FilesystemInterface::DeleteEmptyFolder.

webrtc/base/win32filesystem.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef _WEBRTC_BASE_WIN32FILESYSTEM_H__
 #define _WEBRTC_BASE_WIN32FILESYSTEM_H__
 
 #include "fileutils.h"
 
 namespace rtc {
 
 class Win32Filesystem : public FilesystemInterface {
  public:
   // This will attempt to delete the path located at filename.
   // If the path points to a folder, it will fail with VERIFY
-  virtual bool DeleteFile(const Pathname &filename);
-
-  // This will attempt to delete an empty folder. If the path does not point to
-  // a folder, it fails with VERIFY. If the folder is not empty, it fails normally
-  virtual bool DeleteEmptyFolder(const Pathname &folder);
+  bool DeleteFile(const Pathname& filename) override;
 
   // Creates a directory. This will call itself recursively to create /foo/bar even if
   // /foo does not exist.
   // Returns TRUE if function succeeds
-  virtual bool CreateFolder(const Pathname &pathname);
-  
+  bool CreateFolder(const Pathname& pathname) override;
+
   // This moves a file from old_path to new_path. If the new path is on a 
   // different volume than the old, it will attempt to copy and then delete
   // the folder
   // Returns true if the file is successfully moved
-  virtual bool MoveFile(const Pathname &old_path, const Pathname &new_path);
-  
+  bool MoveFile(const Pathname& old_path, const Pathname& new_path) override;
+
   // Returns true if a pathname is a directory
-  virtual bool IsFolder(const Pathname& pathname);
-  
+  bool IsFolder(const Pathname& pathname) override;
+
   // Returns true if a file exists at path
-  virtual bool IsFile(const Pathname &path);
+  bool IsFile(const Pathname& path) override;
 
   // Returns true if pathname refers to no filesystem object, every parent
   // directory either exists, or is also absent.
-  virtual bool IsAbsent(const Pathname& pathname);
+  bool IsAbsent(const Pathname& pathname) override;
 
   // All of the following functions set pathname and return true if successful.
   // Returned paths always include a trailing backslash.
   // If create is true, the path will be recursively created.
   // If append is non-null, it will be appended (and possibly created).
 
-  virtual std::string TempFilename(const Pathname &dir, const std::string &prefix);
+  std::string TempFilename(const Pathname& dir,
+                           const std::string& prefix) override;
 
-  virtual bool GetFileSize(const Pathname& path, size_t* size);
-  virtual bool GetFileTime(const Pathname& path, FileTimeType which,
-                           time_t* time);
+  bool GetFileSize(const Pathname& path, size_t* size) override;
+  bool GetFileTime(const Pathname& path,
+                   FileTimeType which,
+                   time_t* time) override;
 
   // A folder appropriate for storing temporary files (Contents are
   // automatically deleted when the program exists)
-  virtual bool GetTemporaryFolder(Pathname &path, bool create,
-                                 const std::string *append);
+  bool GetTemporaryFolder(Pathname& path,
+                          bool create,
+                          const std::string* append) override;
 
  private:
   // Returns the path to the running application.
   bool GetAppPathname(Pathname* path);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_WINFILESYSTEM_H__