Replace NULL with nullptr in all C++ files.

webrtc/p2p/base/stunport.cc

 /*
  *  Copyright 2004 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 184 matching lines @@
     : Port(thread,
            LOCAL_PORT_TYPE,
            factory,
            network,
            ip,
            min_port,
            max_port,
            username,
            password),
       requests_(thread),
-      socket_(NULL),
+      socket_(nullptr),
       error_(0),
       ready_(false),
       stun_keepalive_delay_(KEEPALIVE_DELAY),
       emit_local_for_anyaddress_(emit_local_for_anyaddress) {
   requests_.set_origin(origin);
 }
 
 bool UDPPort::Init() {
   stun_keepalive_lifetime_ = GetStunKeepaliveLifetime();
   if (!SharedSocket()) {
-    RTC_DCHECK(socket_ == NULL);
+    RTC_DCHECK(socket_ == nullptr);
     socket_ = socket_factory()->CreateUdpSocket(
         rtc::SocketAddress(ip(), 0), min_port(), max_port());
     if (!socket_) {
       LOG_J(LS_WARNING, this) << "UDP socket creation failed";
       return false;
     }
     socket_->SignalReadPacket.connect(this, &UDPPort::OnReadPacket);
   }
   socket_->SignalSentPacket.connect(this, &UDPPort::OnSentPacket);
   socket_->SignalReadyToSend.connect(this, &UDPPort::OnReadyToSend);
@@ skipping 21 matching lines @@
     SendStunBindingRequests();
   } else {
     // Port is done allocating candidates.
     MaybeSetPortCompleteOrError();
   }
 }
 
 Connection* UDPPort::CreateConnection(const Candidate& address,
                                       CandidateOrigin origin) {
   if (!SupportsProtocol(address.protocol())) {
-    return NULL;
+    return nullptr;
   }
 
   if (!IsCompatibleAddress(address.address())) {
-    return NULL;
+    return nullptr;
   }
 
   if (SharedSocket() && Candidates()[0].type() != LOCAL_PORT_TYPE) {
     RTC_NOTREACHED();
-    return NULL;
+    return nullptr;
   }
 
   Connection* conn = new ProxyConnection(this, 0, address);
   AddOrReplaceConnection(conn);
   return conn;
 }
 
 int UDPPort::SendTo(const void* data, size_t size,
                     const rtc::SocketAddress& addr,
                     const rtc::PacketOptions& options,
@@ skipping 91 matching lines @@
     resolver_->SignalDone.connect(this, &UDPPort::OnResolveResult);
   }
 
   LOG_J(LS_INFO, this) << "Starting STUN host lookup for "
                        << stun_addr.ToSensitiveString();
   resolver_->Resolve(stun_addr);
 }
 
 void UDPPort::OnResolveResult(const rtc::SocketAddress& input,
                               int error) {
-  RTC_DCHECK(resolver_.get() != NULL);
+  RTC_DCHECK(resolver_.get() != nullptr);
 
   rtc::SocketAddress resolved;
   if (error != 0 ||
       !resolver_->GetResolvedAddress(input, ip().family(), &resolved))  {
     LOG_J(LS_WARNING, this) << "StunPort: stun host lookup received error "
                             << error;
     OnStunBindingOrResolveRequestFailed(input);
     return;
   }
 
@@ skipping 117 matching lines @@
   const std::vector<Candidate>& existing_candidates = Candidates();
   std::vector<Candidate>::const_iterator it = existing_candidates.begin();
   for (; it != existing_candidates.end(); ++it) {
     if (it->address() == addr)
       return true;
   }
   return false;
 }
 
 }  // namespace cricket