Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/neteq/decoder_database.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 196 matching lines @@
   decoders_.clear();
   active_decoder_type_ = -1;      // No active decoder.
   active_cng_decoder_type_ = -1;  // No active CNG decoder.
 }
 
 const DecoderDatabase::DecoderInfo* DecoderDatabase::GetDecoderInfo(
     uint8_t rtp_payload_type) const {
   DecoderMap::const_iterator it = decoders_.find(rtp_payload_type);
   if (it == decoders_.end()) {
     // Decoder not found.
-    return NULL;
+    return nullptr;
   }
   return &it->second;
 }
 
 int DecoderDatabase::SetActiveDecoder(uint8_t rtp_payload_type,
                                       bool* new_decoder) {
   // Check that |rtp_payload_type| exists in the database.
   const DecoderInfo *info = GetDecoderInfo(rtp_payload_type);
   if (!info) {
     // Decoder not found.
@@ skipping 12 matching lines @@
     old_info->DropDecoder();
     *new_decoder = true;
   }
   active_decoder_type_ = rtp_payload_type;
   return kOK;
 }
 
 AudioDecoder* DecoderDatabase::GetActiveDecoder() const {
   if (active_decoder_type_ < 0) {
     // No active decoder.
-    return NULL;
+    return nullptr;
   }
   return GetDecoder(active_decoder_type_);
 }
 
 int DecoderDatabase::SetActiveCngDecoder(uint8_t rtp_payload_type) {
   // Check that |rtp_payload_type| exists in the database.
   const DecoderInfo *info = GetDecoderInfo(rtp_payload_type);
   if (!info) {
     // Decoder not found.
     return kDecoderNotFound;
   }
   if (active_cng_decoder_type_ >= 0 &&
       active_cng_decoder_type_ != rtp_payload_type) {
     // Moving from one active CNG decoder to another. Delete the first one.
     RTC_DCHECK(active_cng_decoder_);
     active_cng_decoder_.reset();
   }
   active_cng_decoder_type_ = rtp_payload_type;
   return kOK;
 }
 
 ComfortNoiseDecoder* DecoderDatabase::GetActiveCngDecoder() const {
   if (active_cng_decoder_type_ < 0) {
     // No active CNG decoder.
-    return NULL;
+    return nullptr;
   }
   if (!active_cng_decoder_) {
     active_cng_decoder_.reset(new ComfortNoiseDecoder);
   }
   return active_cng_decoder_.get();
 }
 
 AudioDecoder* DecoderDatabase::GetDecoder(uint8_t rtp_payload_type) const {
   const DecoderInfo *info = GetDecoderInfo(rtp_payload_type);
   return info ? info->GetDecoder() : nullptr;
@@ skipping 31 matching lines @@
       // Payload type is not found.
       LOG(LS_WARNING) << "CheckPayloadTypes: unknown RTP payload type "
                       << static_cast<int>(it->payload_type);
       return kDecoderNotFound;
     }
   }
   return kOK;
 }
 
 }  // namespace webrtc