Delete FilesystemInterface::CopyFile.

webrtc/base/unixfilesystem.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.
  */
 
@@ skipping 44 matching lines @@
   virtual bool CreateFolder(const Pathname &pathname, mode_t mode);
 
   // As above, with mode = 0755.
   bool CreateFolder(const Pathname& pathname) override;
 
   // This moves a file from old_path to new_path, where "file" can be a plain
   // file or directory, which will be moved recursively.
   // Returns true if function succeeds.
   bool MoveFile(const Pathname& old_path, const Pathname& new_path) override;
 
-  // This copies a file from old_path to _new_path where "file" can be a plain
-  // file or directory, which will be copied recursively.
-  // Returns true if function succeeds
-  bool CopyFile(const Pathname& old_path, const Pathname& new_path) override;
-
   // Returns true if a pathname is a directory
   bool IsFolder(const Pathname& pathname) override;
 
   // Returns true if pathname represents a temporary location on the system.
   bool IsTemporaryPath(const Pathname& pathname) override;
 
   // Returns true of pathname represents an existing file
   bool IsFile(const Pathname& pathname) override;
 
   // Returns true if pathname refers to no filesystem object, every parent
@@ skipping 24 matching lines @@
 #else
   static char* app_temp_path_;
 #endif
 
   static char* CopyString(const std::string& str);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_UNIXFILESYSTEM_H_