Migrate net/socket/socket.h, net/socket/stream_socket.h to base::Bind().

net/dns/dns_transaction.cc

Index: net/dns/dns_transaction.cc
diff --git a/net/dns/dns_transaction.cc b/net/dns/dns_transaction.cc
index a7fa922a885e68baddb2f856a2b9bca9498780c9..8d5a23aaeb503df942377c86415058c5c7f44c27 100644
--- a/net/dns/dns_transaction.cc
+++ b/net/dns/dns_transaction.cc
@@ -154,8 +154,6 @@ DnsTransaction::DnsTransaction(const IPEndPoint& dns_server,
       next_state_(STATE_NONE),
       socket_factory_(socket_factory ? socket_factory :
           ClientSocketFactory::GetDefaultFactory()),
-      ALLOW_THIS_IN_INITIALIZER_LIST(
-          io_callback_(this, &DnsTransaction::OnIOComplete)),
       net_log_(BoundNetLog::Make(net_log, NetLog::SOURCE_DNS_TRANSACTION)) {
   DCHECK(!rand_int.is_null());
   for (size_t i = 0; i < arraysize(kTimeoutsMs); ++i)
@@ -272,7 +270,8 @@ int DnsTransaction::DoSendQuery() {
   next_state_ = STATE_SEND_QUERY_COMPLETE;
   return socket_->Write(query_->io_buffer(),
                         query_->io_buffer()->size(),
-                        &io_callback_);
+                        base::Bind(&DnsTransaction::OnIOComplete,
+                                   base::Unretained(this)));
 }
 
 int DnsTransaction::DoSendQueryComplete(int rv) {
@@ -292,7 +291,8 @@ int DnsTransaction::DoReadResponse() {
   response_.reset(new DnsResponse(query_.get()));
   return socket_->Read(response_->io_buffer(),
                        response_->io_buffer()->size(),
-                       &io_callback_);
+                       base::Bind(&DnsTransaction::OnIOComplete,
+                                  base::Unretained(this)));
 }
 
 int DnsTransaction::DoReadResponseComplete(int rv) {