In CreateFolder, delete code to recursively create parent directories.

webrtc/rtc_base/win32filesystem.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.
  */
 
 #ifndef WEBRTC_RTC_BASE_WIN32FILESYSTEM_H_
 #define WEBRTC_RTC_BASE_WIN32FILESYSTEM_H_
 
 #include "fileutils.h"
 
 namespace rtc {
 
 class Win32Filesystem : public FilesystemInterface {
  public:
   // This will attempt to delete the path located at filename.
   // If the path points to a folder, it will fail with VERIFY
   bool DeleteFile(const Pathname& filename) override;
 
-  // Creates a directory. This will call itself recursively to create /foo/bar even if
-  // /foo does not exist.
-  // Returns TRUE if function succeeds
+  // Creates a directory.  Parent directory must already exist.
+  // Returns TRUE if function succeeds.
   bool CreateFolder(const Pathname& pathname) override;
 
   // This moves a file from old_path to new_path. If the new path is on a
   // different volume than the old, it will attempt to copy and then delete
   // the folder
   // Returns true if the file is successfully moved
   bool MoveFile(const Pathname& old_path, const Pathname& new_path) override;
 
   // Returns true if a pathname is a directory
   bool IsFolder(const Pathname& pathname) override;
@@ skipping 12 matching lines @@
 
   std::string TempFilename(const Pathname& dir,
                            const std::string& prefix) override;
 
   bool GetFileSize(const Pathname& path, size_t* size) override;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_RTC_BASE_WIN32FILESYSTEM_H_