Replace NULL with nullptr in all C++ files.

webrtc/examples/peerconnection/client/peer_connection_client.cc

Index: webrtc/examples/peerconnection/client/peer_connection_client.cc
diff --git a/webrtc/examples/peerconnection/client/peer_connection_client.cc b/webrtc/examples/peerconnection/client/peer_connection_client.cc
index ab9cd328ba559f21c998661d541c83ae790669f1..651d2a4803c9e159d6243c506b01fe6c2c778356 100644
--- a/webrtc/examples/peerconnection/client/peer_connection_client.cc
+++ b/webrtc/examples/peerconnection/client/peer_connection_client.cc
@@ -36,7 +36,7 @@ rtc::AsyncSocket* CreateClientSocket(int family) {
   return sock;
 #elif defined(WEBRTC_POSIX)
   rtc::Thread* thread = rtc::Thread::Current();
-  RTC_DCHECK(thread != NULL);
+  RTC_DCHECK(thread != nullptr);
   return thread->socketserver()->CreateAsyncSocket(family, SOCK_STREAM);
 #else
 #error Platform not supported.
@@ -46,18 +46,17 @@ rtc::AsyncSocket* CreateClientSocket(int family) {
 }  // namespace
 
 PeerConnectionClient::PeerConnectionClient()
-  : callback_(NULL),
-    resolver_(NULL),
-    state_(NOT_CONNECTED),
-    my_id_(-1) {
-}
+    : callback_(nullptr),
+      resolver_(nullptr),
+      state_(NOT_CONNECTED),
+      my_id_(-1) {}
 
 PeerConnectionClient::~PeerConnectionClient() {
 }
 
 void PeerConnectionClient::InitSocketSignals() {
-  RTC_DCHECK(control_socket_.get() != NULL);
-  RTC_DCHECK(hanging_get_.get() != NULL);
+  RTC_DCHECK(control_socket_.get() != nullptr);
+  RTC_DCHECK(hanging_get_.get() != nullptr);
   control_socket_->SignalCloseEvent.connect(this,
       &PeerConnectionClient::OnClose);
   hanging_get_->SignalCloseEvent.connect(this,
@@ -129,7 +128,7 @@ void PeerConnectionClient::OnResolveResult(
   if (resolver_->GetError() != 0) {
     callback_->OnServerConnectionFailure();
     resolver_->Destroy(false);
-    resolver_ = NULL;
+    resolver_ = nullptr;
     state_ = NOT_CONNECTED;
   } else {
     server_address_ = resolver_->address();
@@ -216,9 +215,9 @@ void PeerConnectionClient::Close() {
   hanging_get_->Close();
   onconnect_data_.clear();
   peers_.clear();
-  if (resolver_ != NULL) {
+  if (resolver_ != nullptr) {
     resolver_->Destroy(false);
-    resolver_ = NULL;
+    resolver_ = nullptr;
   }
   my_id_ = -1;
   state_ = NOT_CONNECTED;
@@ -264,7 +263,7 @@ bool PeerConnectionClient::GetHeaderValue(const std::string& data,
                                           size_t eoh,
                                           const char* header_pattern,
                                           size_t* value) {
-  RTC_DCHECK(value != NULL);
+  RTC_DCHECK(value != nullptr);
   size_t found = data.find(header_pattern);
   if (found != std::string::npos && found < eoh) {
     *value = atoi(&data[found + strlen(header_pattern)]);
@@ -276,7 +275,7 @@ bool PeerConnectionClient::GetHeaderValue(const std::string& data,
 bool PeerConnectionClient::GetHeaderValue(const std::string& data, size_t eoh,
                                           const char* header_pattern,
                                           std::string* value) {
-  RTC_DCHECK(value != NULL);
+  RTC_DCHECK(value != nullptr);
   size_t found = data.find(header_pattern);
   if (found != std::string::npos && found < eoh) {
     size_t begin = found + strlen(header_pattern);
@@ -425,9 +424,9 @@ bool PeerConnectionClient::ParseEntry(const std::string& entry,
                                       std::string* name,
                                       int* id,
                                       bool* connected) {
-  RTC_DCHECK(name != NULL);
-  RTC_DCHECK(id != NULL);
-  RTC_DCHECK(connected != NULL);
+  RTC_DCHECK(name != nullptr);
+  RTC_DCHECK(id != nullptr);
+  RTC_DCHECK(connected != nullptr);
   RTC_DCHECK(!entry.empty());
 
   *connected = false;