Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/cast_channel/cast_socket.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 <stdlib.h>
 #include <string.h>
 
 #include "base/bind.h"
@@ skipping 835 matching lines @@
   VLOG_WITH_CONNECTION(2) << "DoReadComplete result = " << result;
 
   if (result <= 0) {  // 0 means EOF: the peer closed the socket
     VLOG_WITH_CONNECTION(1) << "Read error, peer closed the socket";
     SetErrorState(CHANNEL_ERROR_SOCKET_ERROR);
     SetReadState(READ_STATE_ERROR);
     return result == 0 ? net::ERR_FAILED : result;
   }
 
   size_t message_size;
-  DCHECK(current_message_.get() == NULL);
+  DCHECK(current_message_.get() == nullptr);
   current_message_ = framer_->Ingest(result, &message_size, &error_state_);
   if (current_message_.get()) {
     DCHECK_EQ(error_state_, CHANNEL_ERROR_NONE);
     DCHECK_GT(message_size, static_cast<size_t>(0));
     logger_->LogSocketEventForMessage(
         channel_id_,
         proto::MESSAGE_READ,
         current_message_->namespace_(),
         base::StringPrintf("Message size: %u",
                            static_cast<uint32>(message_size)));
     SetReadState(READ_STATE_DO_CALLBACK);
   } else if (error_state_ != CHANNEL_ERROR_NONE) {
-    DCHECK(current_message_.get() == NULL);
+    DCHECK(current_message_.get() == nullptr);
     SetReadState(READ_STATE_ERROR);
   } else {
-    DCHECK(current_message_.get() == NULL);
+    DCHECK(current_message_.get() == nullptr);
     SetReadState(READ_STATE_READ);
   }
   return net::OK;
 }
 
 int CastSocket::DoReadCallback() {
   SetReadState(READ_STATE_READ);
   const CastMessage& message = *current_message_;
   if (ready_state_ == READY_STATE_CONNECTING) {
     if (IsAuthMessage(message)) {
@@ skipping 106 matching lines @@
                                          message_data.size());
   return true;
 }
 
 CastSocket::WriteRequest::~WriteRequest() { }
 }  // namespace cast_channel
 }  // namespace core_api
 }  // namespace extensions
 
 #undef VLOG_WITH_CONNECTION