Replace NULL with nullptr in all C++ files.

webrtc/voice_engine/voe_neteq_stats_impl.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.
  */
 
 #include "webrtc/voice_engine/voe_neteq_stats_impl.h"
 
 #include "webrtc/modules/audio_coding/include/audio_coding_module.h"
 #include "webrtc/system_wrappers/include/trace.h"
 #include "webrtc/voice_engine/channel.h"
 #include "webrtc/voice_engine/include/voe_errors.h"
 #include "webrtc/voice_engine/voice_engine_impl.h"
 
 namespace webrtc {
 
 VoENetEqStats* VoENetEqStats::GetInterface(VoiceEngine* voiceEngine) {
-  if (NULL == voiceEngine) {
-    return NULL;
+  if (nullptr == voiceEngine) {
+    return nullptr;
   }
   VoiceEngineImpl* s = static_cast<VoiceEngineImpl*>(voiceEngine);
   s->AddRef();
   return s;
 }
 
 VoENetEqStatsImpl::VoENetEqStatsImpl(voe::SharedData* shared)
     : _shared(shared) {
   WEBRTC_TRACE(kTraceMemory, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "VoENetEqStatsImpl::VoENetEqStatsImpl() - ctor");
 }
 
 VoENetEqStatsImpl::~VoENetEqStatsImpl() {
   WEBRTC_TRACE(kTraceMemory, kTraceVoice, VoEId(_shared->instance_id(), -1),
                "VoENetEqStatsImpl::~VoENetEqStatsImpl() - dtor");
 }
 
 int VoENetEqStatsImpl::GetNetworkStatistics(int channel,
                                             NetworkStatistics& stats) {
   if (!_shared->statistics().Initialized()) {
     _shared->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
   voe::Channel* channelPtr = ch.channel();
-  if (channelPtr == NULL) {
+  if (channelPtr == nullptr) {
     _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                           "GetNetworkStatistics() failed to locate channel");
     return -1;
   }
 
   return channelPtr->GetNetworkStatistics(stats);
 }
 
 int VoENetEqStatsImpl::GetDecodingCallStatistics(
     int channel, AudioDecodingCallStats* stats) const {
   if (!_shared->statistics().Initialized()) {
     _shared->SetLastError(VE_NOT_INITED, kTraceError);
     return -1;
   }
   voe::ChannelOwner ch = _shared->channel_manager().GetChannel(channel);
   voe::Channel* channelPtr = ch.channel();
-  if (channelPtr == NULL) {
+  if (channelPtr == nullptr) {
     _shared->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                           "GetDecodingCallStatistics() failed to locate "
                           "channel");
     return -1;
   }
 
   channelPtr->GetDecodingCallStatistics(stats);
   return 0;
 }
 
 }  // namespace webrtc