Replace NULL with nullptr or null in webrtc/base/.

webrtc/base/pathutils.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 25 matching lines @@
 const char DEFAULT_FOLDER_DELIM = '\\';
 #else  // !WEBRTC_WIN
 const char DEFAULT_FOLDER_DELIM = '/';
 #endif  // !WEBRTC_WIN
 
 ///////////////////////////////////////////////////////////////////////////////
 // Pathname - parsing of pathnames into components, and vice versa
 ///////////////////////////////////////////////////////////////////////////////
 
 bool Pathname::IsFolderDelimiter(char ch) {
-  return (NULL != ::strchr(FOLDER_DELIMS, ch));
+  return (nullptr != ::strchr(FOLDER_DELIMS, ch));
 }
 
 char Pathname::DefaultFolderDelimiter() {
   return DEFAULT_FOLDER_DELIM;
 }
 
 Pathname::Pathname()
     : folder_delimiter_(DEFAULT_FOLDER_DELIM) {
 }
 
@@ skipping 178 matching lines @@
   // sanity checking
   return (isalpha(drive[0]) &&
           drive[1] == ':' &&
           drive[2] == '\\');
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 } // namespace rtc