Delete unused method FilesystemInterface::IsAbsent.

webrtc/rtc_base/win32filesystem.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 93 matching lines @@
 }
 
 bool Win32Filesystem::IsFile(const Pathname &path) {
   WIN32_FILE_ATTRIBUTE_DATA data = {0};
   if (0 == ::GetFileAttributesEx(ToUtf16(path.pathname()).c_str(),
                                  GetFileExInfoStandard, &data))
     return false;
   return (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0;
 }
 
-bool Win32Filesystem::IsAbsent(const Pathname& path) {
-  WIN32_FILE_ATTRIBUTE_DATA data = {0};
-  if (0 != ::GetFileAttributesEx(ToUtf16(path.pathname()).c_str(),
-                                 GetFileExInfoStandard, &data))
-    return false;
-  DWORD err = ::GetLastError();
-  return (ERROR_FILE_NOT_FOUND == err || ERROR_PATH_NOT_FOUND == err);
-}
-
 bool Win32Filesystem::GetFileSize(const Pathname &pathname, size_t *size) {
   WIN32_FILE_ATTRIBUTE_DATA data = {0};
   if (::GetFileAttributesEx(ToUtf16(pathname.pathname()).c_str(),
                             GetFileExInfoStandard, &data) == 0)
   return false;
   *size = data.nFileSizeLow;
   return true;
 }
 
 }  // namespace rtc