Add C++ wrappers for output parameters.

remoting/protocol/pepper_transport_socket_adapter.cc

 // Copyright (c) 2011 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 "remoting/protocol/pepper_transport_socket_adapter.h"
 
 #include "base/logging.h"
 #include "net/base/address_list.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ skipping 122 matching lines @@
   connect_callback_ = callback;
 
   // This will return false when GetNextAddress() returns an
   // error. This helps to detect when the P2P Transport API is not
   // supported.
   int result = ProcessCandidates();
   if (result != net::OK)
     return result;
 
   result = transport_->Connect(
-      callback_factory_.NewRequiredCallback(
-          &PepperTransportSocketAdapter::OnConnect));
+      callback_factory_.NewCallback(&PepperTransportSocketAdapter::OnConnect));
   DCHECK_EQ(result, PP_OK_COMPLETIONPENDING);
 
   return net::ERR_IO_PENDING;
 }
 
 void PepperTransportSocketAdapter::Disconnect() {
   DCHECK(CalledOnValidThread());
   transport_.reset();
 }
 
@@ skipping 127 matching lines @@
   DCHECK(write_buffer_);
 
   net::CompletionCallback callback = write_callback_;
   write_callback_.Reset();
   write_buffer_ = NULL;
   callback.Run(PPErrorToNetError(result));
 }
 
 }  // namespace protocol
 }  // namespace remoting