Replace NULL with nullptr in all C++ files.

webrtc/examples/peerconnection/server/peer_channel.cc

Index: webrtc/examples/peerconnection/server/peer_channel.cc
diff --git a/webrtc/examples/peerconnection/server/peer_channel.cc b/webrtc/examples/peerconnection/server/peer_channel.cc
index 35d592eb7681cd3373a859acf25ab621cd0cc856..3b5b86bea83578eee8b9d1c49953fee051c9b779 100644
--- a/webrtc/examples/peerconnection/server/peer_channel.cc
+++ b/webrtc/examples/peerconnection/server/peer_channel.cc
@@ -55,8 +55,10 @@ const size_t kMaxNameLength = 512;
 int ChannelMember::s_member_id_ = 0;
 
 ChannelMember::ChannelMember(DataSocket* socket)
-  : waiting_socket_(NULL), id_(++s_member_id_),
-    connected_(true), timestamp_(time(NULL)) {
+    : waiting_socket_(nullptr),
+      id_(++s_member_id_),
+      connected_(true),
+      timestamp_(time(nullptr)) {
   assert(socket);
   assert(socket->method() == DataSocket::GET);
   assert(socket->PathEquals("/sign_in"));
@@ -77,7 +79,7 @@ bool ChannelMember::is_wait_request(DataSocket* ds) const {
 }
 
 bool ChannelMember::TimedOut() {
-  return waiting_socket_ == NULL && (time(NULL) - timestamp_) > 30;
+  return waiting_socket_ == nullptr && (time(nullptr) - timestamp_) > 30;
 }
 
 std::string ChannelMember::GetPeerIdHeader() const {
@@ -123,8 +125,8 @@ void ChannelMember::ForwardRequestToPeer(DataSocket* ds, ChannelMember* peer) {
 
 void ChannelMember::OnClosing(DataSocket* ds) {
   if (ds == waiting_socket_) {
-    waiting_socket_ = NULL;
-    timestamp_ = time(NULL);
+    waiting_socket_ = nullptr;
+    timestamp_ = time(nullptr);
   }
 }
 
@@ -140,8 +142,8 @@ void ChannelMember::QueueResponse(const std::string& status,
     if (!ok) {
       printf("Failed to deliver data to waiting socket\n");
     }
-    waiting_socket_ = NULL;
-    timestamp_ = time(NULL);
+    waiting_socket_ = nullptr;
+    timestamp_ = time(nullptr);
   } else {
     QueuedResponse qr;
     qr.status = status;
@@ -155,7 +157,7 @@ void ChannelMember::QueueResponse(const std::string& status,
 void ChannelMember::SetWaitingSocket(DataSocket* ds) {
   assert(ds->method() == DataSocket::GET);
   if (ds && !queue_.empty()) {
-    assert(waiting_socket_ == NULL);
+    assert(waiting_socket_ == nullptr);
     const QueuedResponse& response = queue_.front();
     ds->Send(response.status, true, response.content_type,
              response.extra_headers, response.data);
@@ -180,7 +182,7 @@ ChannelMember* PeerChannel::Lookup(DataSocket* ds) const {
   assert(ds);
 
   if (ds->method() != DataSocket::GET && ds->method() != DataSocket::POST)
-    return NULL;
+    return nullptr;
 
   size_t i = 0;
   for (; i < ARRAYSIZE(kRequestPaths); ++i) {
@@ -189,13 +191,13 @@ ChannelMember* PeerChannel::Lookup(DataSocket* ds) const {
   }
 
   if (i == ARRAYSIZE(kRequestPaths))
-    return NULL;
+    return nullptr;
 
   std::string args(ds->request_arguments());
   static const char kPeerId[] = "peer_id=";
   size_t found = args.find(kPeerId);
   if (found == std::string::npos)
-    return NULL;
+    return nullptr;
 
   int id = atoi(&args[found + ARRAYSIZE(kPeerId) - 1]);
   Members::const_iterator iter = members_.begin();
@@ -209,7 +211,7 @@ ChannelMember* PeerChannel::Lookup(DataSocket* ds) const {
     }
   }
 
-  return NULL;
+  return nullptr;
 }
 
 ChannelMember* PeerChannel::IsTargetedRequest(const DataSocket* ds) const {
@@ -219,13 +221,13 @@ ChannelMember* PeerChannel::IsTargetedRequest(const DataSocket* ds) const {
   const std::string& path = ds->request_path();
   size_t args = path.find('?');
   if (args == std::string::npos)
-    return NULL;
+    return nullptr;
   size_t found;
   const char kTargetPeerIdParam[] = "to=";
   do {
     found = path.find(kTargetPeerIdParam, args);
     if (found == std::string::npos)
-      return NULL;
+      return nullptr;
     if (found == (args + 1) || path[found - 1] == '&') {
       found += ARRAYSIZE(kTargetPeerIdParam) - 1;
       break;
@@ -239,7 +241,7 @@ ChannelMember* PeerChannel::IsTargetedRequest(const DataSocket* ds) const {
       return *i;
     }
   }
-  return NULL;
+  return nullptr;
 }
 
 bool PeerChannel::AddMember(DataSocket* ds) {