Replace NULL with nullptr.

extensions/browser/api/cast_channel/cast_socket_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/cast_channel/cast_socket.h"
 
 #include <vector>
 
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 77 matching lines @@
   test_message.set_namespace_("ns");
   test_message.set_source_id("source");
   test_message.set_destination_id("dest");
   test_message.set_payload_type(CastMessage::STRING);
   test_message.set_payload_utf8("payload");
   return test_message;
 }
 
 class MockTCPSocket : public net::TCPClientSocket {
  public:
-  explicit MockTCPSocket(const net::MockConnect& connect_data) :
-      TCPClientSocket(net::AddressList(), NULL, net::NetLog::Source()),
-      connect_data_(connect_data),
-      do_nothing_(false) { }
+  explicit MockTCPSocket(const net::MockConnect& connect_data)
+      : TCPClientSocket(net::AddressList(), nullptr, net::NetLog::Source()),
+        connect_data_(connect_data),
+        do_nothing_(false) {}
 
-  explicit MockTCPSocket(bool do_nothing) :
-      TCPClientSocket(net::AddressList(), NULL, net::NetLog::Source()) {
+  explicit MockTCPSocket(bool do_nothing)
+      : TCPClientSocket(net::AddressList(), nullptr, net::NetLog::Source()) {
     CHECK(do_nothing);
     do_nothing_ = do_nothing;
   }
 
   virtual int Connect(const net::CompletionCallback& callback) {
     if (do_nothing_) {
       // Stall the I/O event loop.
       return net::ERR_IO_PENDING;
     }
 
@@ skipping 82 matching lines @@
                        &capturing_net_log_,
                        base::TimeDelta::FromMilliseconds(timeout_ms),
                        logger),
         ip_(ip_endpoint),
         connect_index_(0),
         extract_cert_result_(true),
         verify_challenge_result_(true),
         verify_challenge_disallow_(false),
         tcp_unresponsive_(false),
         mock_timer_(new base::MockTimer(false, false)),
-        mock_transport_(NULL) {}
+        mock_transport_(nullptr) {}
 
   ~TestCastSocket() override {}
 
   void SetupMockTransport() {
     mock_transport_ = new MockCastTransport;
     SetTransportForTesting(make_scoped_ptr(mock_transport_));
   }
 
   // Socket connection helpers.
   void SetupTcp1Connect(net::IoMode mode, int result) {
@@ skipping 639 matching lines @@
       test_message, base::Bind(&CompleteHandler::OnWriteComplete,
                                base::Unretained(&handler_)));
   RunPendingTasks();
 
   EXPECT_EQ(cast_channel::READY_STATE_OPEN, socket_->ready_state());
   EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, socket_->error_state());
 }
 }  // namespace cast_channel
 }  // namespace core_api
 }  // namespace extensions