Delete unused method FilesystemInterface::IsAbsent.

webrtc/rtc_base/fileutils.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 80 matching lines @@
   // plain file. This DCHECKs and returns false if old_path points to a
   // directory, and returns true if the function succeeds.
   virtual bool MoveFile(const Pathname &old_path, const Pathname &new_path) = 0;
 
   // Returns true if pathname refers to a directory
   virtual bool IsFolder(const Pathname& pathname) = 0;
 
   // Returns true if pathname refers to a file
   virtual bool IsFile(const Pathname& pathname) = 0;
 
-  // Returns true if pathname refers to no filesystem object, every parent
-  // directory either exists, or is also absent.
-  virtual bool IsAbsent(const Pathname& pathname) = 0;
-
   virtual std::string TempFilename(const Pathname &dir,
                                    const std::string &prefix) = 0;
 
   // Determines the size of the file indicated by path.
   virtual bool GetFileSize(const Pathname& path, size_t* size) = 0;
 };
 
 class Filesystem {
  public:
   static FilesystemInterface *default_filesystem() {
@@ skipping 25 matching lines @@
   }
 
   static bool IsFolder(const Pathname& pathname) {
     return EnsureDefaultFilesystem()->IsFolder(pathname);
   }
 
   static bool IsFile(const Pathname &pathname) {
     return EnsureDefaultFilesystem()->IsFile(pathname);
   }
 
-  static bool IsAbsent(const Pathname &pathname) {
-    return EnsureDefaultFilesystem()->IsAbsent(pathname);
-  }
-
   static std::string TempFilename(const Pathname &dir,
                                   const std::string &prefix) {
     return EnsureDefaultFilesystem()->TempFilename(dir, prefix);
   }
 
   static bool GetFileSize(const Pathname& path, size_t* size) {
     return EnsureDefaultFilesystem()->GetFileSize(path, size);
   }
 
  private:
   static FilesystemInterface* default_filesystem_;
 
   static FilesystemInterface *EnsureDefaultFilesystem();
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(Filesystem);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_RTC_BASE_FILEUTILS_H_