Simplify IqRequest interface.

remoting/jingle_glue/xmpp_iq_request.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/jingle_glue/xmpp_iq_request.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "third_party/libjingle/source/talk/xmpp/constants.h"
 #include "third_party/libjingle/source/talk/xmpp/xmppclient.h"
 
 namespace remoting {
 
 XmppIqRequest::XmppIqRequest(MessageLoop* message_loop,
                              buzz::XmppClient* xmpp_client)
     : message_loop_(message_loop),
       xmpp_client_(xmpp_client),
       cookie_(NULL) {
   DCHECK(xmpp_client_);
   DCHECK_EQ(MessageLoop::current(), message_loop_);
 }
 
 XmppIqRequest::~XmppIqRequest() {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
   Unregister();
 }
 
-void XmppIqRequest::SendIq(const std::string& type,
-                       const std::string& addressee,
-                       buzz::XmlElement* iq_body) {
+void XmppIqRequest::SendIq(buzz::XmlElement* stanza) {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
 
   // Unregister the handler if it is already registered.
   Unregister();
 
-  DCHECK_GT(type.length(), 0U);
-
-  scoped_ptr<buzz::XmlElement> stanza(MakeIqStanza(type, addressee, iq_body,
-                                                   xmpp_client_->NextId()));
-
-  xmpp_client_->engine()->SendIq(stanza.get(), this, &cookie_);
+  stanza->AddAttr(buzz::QN_ID, xmpp_client_->NextId());
+  xmpp_client_->engine()->SendIq(stanza, this, &cookie_);
 }
 
 void XmppIqRequest::set_callback(const ReplyCallback& callback) {
   callback_ = callback;
 }
 
 void XmppIqRequest::Unregister() {
   if (cookie_) {
     // No need to unregister the handler if the client has been destroyed.
     if (xmpp_client_) {
       xmpp_client_->engine()->RemoveIqHandler(cookie_, NULL);
     }
     cookie_ = NULL;
   }
 }
 
 void XmppIqRequest::IqResponse(buzz::XmppIqCookie cookie,
                                const buzz::XmlElement* stanza) {
   if (!callback_.is_null()) {
     callback_.Run(stanza);
     callback_.Reset();
   }
 }
 
 }  // namespace remoting