Delete Filesystem::IterateDirectory and Filesystem::OpenFile.

webrtc/base/win32filesystem.cc

Index: webrtc/base/win32filesystem.cc
diff --git a/webrtc/base/win32filesystem.cc b/webrtc/base/win32filesystem.cc
index 0e7dd545e2db1a114e5672ccd8b2df335799078e..feb7da0c78a26fab5c61df1445ce67f202d9fdcd 100644
--- a/webrtc/base/win32filesystem.cc
+++ b/webrtc/base/win32filesystem.cc
@@ -63,16 +63,6 @@ bool Win32Filesystem::CreateFolder(const Pathname &pathname) {
   return (::CreateDirectory(path16.c_str(), nullptr) != 0);
 }
 
-FileStream *Win32Filesystem::OpenFile(const Pathname &filename,
-                                      const std::string &mode) {
-  FileStream *fs = new FileStream();
-  if (fs && !fs->Open(filename.pathname().c_str(), mode.c_str(), nullptr)) {
-    delete fs;
-    fs = nullptr;
-  }
-  return fs;
-}
-
 bool Win32Filesystem::DeleteFile(const Pathname &filename) {
   LOG(LS_INFO) << "Deleting file " << filename.pathname();
   if (!IsFile(filename)) {