Delete unused method FilesystemInterface::IsAbsent.

webrtc/rtc_base/unixfilesystem.cc

 /*
  *  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 126 matching lines @@
   return S_ISDIR(st.st_mode);
 }
 
 bool UnixFilesystem::IsFile(const Pathname& pathname) {
   struct stat st;
   int res = ::stat(pathname.pathname().c_str(), &st);
   // Treat symlinks, named pipes, etc. all as files.
   return res == 0 && !S_ISDIR(st.st_mode);
 }
 
-bool UnixFilesystem::IsAbsent(const Pathname& pathname) {
-  struct stat st;
-  int res = ::stat(pathname.pathname().c_str(), &st);
-  // Note: we specifically maintain ENOTDIR as an error, because that implies
-  // that you could not call CreateFolder(pathname).
-  return res != 0 && ENOENT == errno;
-}
-
 bool UnixFilesystem::GetFileSize(const Pathname& pathname, size_t *size) {
   struct stat st;
   if (::stat(pathname.pathname().c_str(), &st) != 0)
     return false;
   *size = st.st_size;
   return true;
 }
 
 char* UnixFilesystem::CopyString(const std::string& str) {
   size_t size = str.length() + 1;
 
   char* buf = new char[size];
   if (!buf) {
     return nullptr;
   }
 
   strcpyn(buf, size, str.c_str());
   return buf;
 }
 
 }  // namespace rtc
 
 #if defined(__native_client__)
 extern "C" int __attribute__((weak))
 link(const char* oldpath, const char* newpath) {
   errno = EACCES;
   return -1;
 }
 #endif