Replace NULL with nullptr in all C++ files.

webrtc/voice_engine/voe_codec_impl.cc

Index: webrtc/voice_engine/voe_codec_impl.cc
diff --git a/webrtc/voice_engine/voe_codec_impl.cc b/webrtc/voice_engine/voe_codec_impl.cc
index 2022024536c164b13b9d77825940a7e579b279d1..ba8085d611d01b138f6fad5cdafa87ad16b69786 100644
--- a/webrtc/voice_engine/voe_codec_impl.cc
+++ b/webrtc/voice_engine/voe_codec_impl.cc
@@ -20,8 +20,8 @@
 namespace webrtc {
 
 VoECodec* VoECodec::GetInterface(VoiceEngine* voiceEngine) {
-  if (NULL == voiceEngine) {
-    return NULL;
+  if (nullptr == voiceEngine) {
+    return nullptr;
   }
   VoiceEngineImpl* s = static_cast<VoiceEngineImpl*>(voiceEngine);
   s->AddRef();
@@ -85,7 +85,7 @@ int VoECodecImpl::SetSendCodec(int channel, const CodecInst& codec) {
   }
   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,
                           "GetSendCodec() failed to locate channel");
     return -1;
@@ -111,7 +111,7 @@ int VoECodecImpl::GetSendCodec(int channel, CodecInst& codec) {
   }
   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,
                           "GetSendCodec() failed to locate channel");
     return -1;
@@ -144,7 +144,7 @@ int VoECodecImpl::GetRecCodec(int channel, CodecInst& codec) {
   }
   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,
                           "GetRecCodec() failed to locate channel");
     return -1;
@@ -166,7 +166,7 @@ int VoECodecImpl::SetRecPayloadType(int channel, const CodecInst& codec) {
   }
   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,
                           "GetRecPayloadType() failed to locate channel");
     return -1;
@@ -181,7 +181,7 @@ int VoECodecImpl::GetRecPayloadType(int channel, CodecInst& codec) {
   }
   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,
                           "GetRecPayloadType() failed to locate channel");
     return -1;
@@ -215,7 +215,7 @@ int VoECodecImpl::SetSendCNPayloadType(int channel,
   }
   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,
                           "SetSendCNPayloadType() failed to locate channel");
     return -1;
@@ -232,7 +232,7 @@ int VoECodecImpl::SetFECStatus(int channel, bool enable) {
   }
   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,
                           "SetCodecFECStatus() failed to locate channel");
     return -1;
@@ -247,7 +247,7 @@ int VoECodecImpl::GetFECStatus(int channel, bool& enabled) {
   }
   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,
                           "GetFECStatus() failed to locate channel");
     return -1;
@@ -270,7 +270,7 @@ int VoECodecImpl::SetVADStatus(int channel,
   }
   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,
                           "SetVADStatus failed to locate channel");
     return -1;
@@ -304,7 +304,7 @@ int VoECodecImpl::GetVADStatus(int channel,
   }
   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,
                           "GetVADStatus failed to locate channel");
     return -1;
@@ -346,7 +346,7 @@ int VoECodecImpl::SetOpusMaxPlaybackRate(int channel, int frequency_hz) {
   }
   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,
                           "SetOpusMaxPlaybackRate failed to locate channel");
     return -1;
@@ -363,7 +363,7 @@ int VoECodecImpl::SetOpusDtx(int channel, bool enable_dtx) {
   }
   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,
                           "SetOpusDtx failed to locate channel");
     return -1;
@@ -380,7 +380,7 @@ int VoECodecImpl::GetOpusDtxStatus(int channel, bool* enabled) {
   }
   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,
                           "GetOpusDtx failed to locate channel");
     return -1;