Convert JsonWriter::Write to taking a const ref for the in-param

remoting/host/gnubby_auth_handler_posix.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 "remoting/host/gnubby_auth_handler_posix.h"
 
 #include <unistd.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 156 matching lines @@
   request.SetString(kMessageType, kDataMessage);
   request.SetInteger(kConnectionId, connection_id);
 
   base::ListValue* bytes = new base::ListValue();
   for (std::string::const_iterator i = data.begin(); i != data.end(); ++i) {
     bytes->AppendInteger(static_cast<unsigned char>(*i));
   }
   request.Set(kDataPayload, bytes);
 
   std::string request_json;
-  if (!base::JSONWriter::Write(&request, &request_json)) {
+  if (!base::JSONWriter::Write(request, &request_json)) {
     LOG(ERROR) << "Failed to create request json";
     return;
   }
 
   protocol::ExtensionMessage message;
   message.set_type(kGnubbyAuthMessage);
   message.set_data(request_json);
 
   client_stub_->DeliverHostMessage(message);
 }
@@ skipping 110 matching lines @@
 }
 
 void GnubbyAuthHandlerPosix::RequestTimedOut(int connection_id) {
   HOST_LOG << "Gnubby request timed out";
   ActiveSockets::iterator iter = active_sockets_.find(connection_id);
   if (iter != active_sockets_.end())
     SendErrorAndCloseActiveSocket(iter);
 }
 
 }  // namespace remoting