Delete class DirectoryIterator and FileRotatingStream read support.

webrtc/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 109 matching lines @@
 }
 
 bool UnixFilesystem::CreateFolder(const Pathname &path) {
   return CreateFolder(path, 0755);
 }
 
 bool UnixFilesystem::DeleteFile(const Pathname &filename) {
   LOG(LS_INFO) << "Deleting file:" << filename.pathname();
 
   if (!IsFile(filename)) {
-    RTC_DCHECK(IsFile(filename));
     return false;
   }
   return ::unlink(filename.pathname().c_str()) == 0;
 }
 
 bool UnixFilesystem::GetTemporaryFolder(Pathname &pathname, bool create,
                                         const std::string *append) {
 #if defined(WEBRTC_ANDROID) || defined(WEBRTC_MAC)
   RTC_DCHECK(provided_app_temp_folder_ != nullptr);
   pathname.SetPathname(provided_app_temp_folder_, "");
@@ skipping 91 matching lines @@
 
 }  // namespace rtc
 
 #if defined(__native_client__)
 extern "C" int __attribute__((weak))
 link(const char* oldpath, const char* newpath) {
   errno = EACCES;
   return -1;
 }
 #endif