Replace NULL with nullptr in all C++ files.

webrtc/modules/rtp_rtcp/source/rtp_utility.cc

 /*
  *  Copyright (c) 2012 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 53 matching lines @@
 size_t Word32Align(size_t size) {
   uint32_t remainder = size % 4;
   if (remainder != 0)
     return size + 4 - remainder;
   return size;
 }
 
 RtpHeaderParser::RtpHeaderParser(const uint8_t* rtpData,
                                  const size_t rtpDataLength)
     : _ptrRTPDataBegin(rtpData),
-      _ptrRTPDataEnd(rtpData ? (rtpData + rtpDataLength) : NULL) {
-}
+      _ptrRTPDataEnd(rtpData ? (rtpData + rtpDataLength) : nullptr) {}
 
 RtpHeaderParser::~RtpHeaderParser() {
 }
 
 bool RtpHeaderParser::RTCP() const {
   // 72 to 76 is reserved for RTP
   // 77 to 79 is not reserver but  they are not assigned we will block them
   // for RTCP 200 SR  == marker bit + 72
   // for RTCP 204 APP == marker bit + 76
   /*
@@ skipping 58 matching lines @@
     case 205:
     case 206:
     case 207:
       return true;
     default:
       return false;
   }
 }
 
 bool RtpHeaderParser::ParseRtcp(RTPHeader* header) const {
-  assert(header != NULL);
+  assert(header != nullptr);
 
   const ptrdiff_t length = _ptrRTPDataEnd - _ptrRTPDataBegin;
   if (length < kRtcpMinParseLength) {
     return false;
   }
 
   const uint8_t V = _ptrRTPDataBegin[0] >> 6;
   if (V != kRtcpExpectedVersion) {
     return false;
   }
@@ skipping 287 matching lines @@
           return;
         }
       }
     }
     ptr += (len + 1);
   }
 }
 
 }  // namespace RtpUtility
 }  // namespace webrtc