Remove dependency on XMPP implementation in WebRTC

remoting/signaling/xmpp_signal_strategy.h

 // 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.
 
-// The XmppSignalStrategy encapsulates all the logic to perform the signaling
-// STUN/ICE for jingle via a direct XMPP connection.
-//
-// This class is not threadsafe.
-
 #ifndef REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
 #define REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
 
 #include "remoting/signaling/signal_strategy.h"
 
-#include <vector>
-
 #include "base/compiler_specific.h"
-#include "base/observer_list.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/timer/timer.h"
-#include "third_party/webrtc/base/sigslot.h"
-#include "third_party/webrtc/libjingle/xmpp/xmppclient.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 
 namespace net {
 class ClientSocketFactory;
 class URLRequestContextGetter;
 }  // namespace net
 
-namespace rtc {
-class TaskRunner;
-}  // namespace rtc
-
 namespace remoting {
 
-class JingleThread;
-
-class XmppSignalStrategy : public base::NonThreadSafe,
-                           public SignalStrategy,
-                           public buzz::XmppStanzaHandler,
-                           public sigslot::has_slots<> {
+// XmppSignalStrategy implements SignalStrategy using direct XMPP connection.
+class XmppSignalStrategy : public SignalStrategy {
  public:
   // XMPP Server configuration for XmppSignalStrategy.
   struct XmppServerConfig {
     XmppServerConfig();
     ~XmppServerConfig();
 
     std::string host;
     int port;
     bool use_tls;
 
@@ skipping 12 matching lines @@
   void Connect() override;
   void Disconnect() override;
   State GetState() const override;
   Error GetError() const override;
   std::string GetLocalJid() const override;
   void AddListener(Listener* listener) override;
   void RemoveListener(Listener* listener) override;
   bool SendStanza(scoped_ptr<buzz::XmlElement> stanza) override;
   std::string GetNextId() override;
 
-  // buzz::XmppStanzaHandler interface.
-  bool HandleStanza(const buzz::XmlElement* stanza) override;
-
   // This method is used to update the auth info (for example when the OAuth
   // access token is renewed). It is OK to call this even when we are in the
   // CONNECTED state. It will be used on the next Connect() call.
   void SetAuthInfo(const std::string& username,
                    const std::string& auth_token,
                    const std::string& auth_service);
 
-  // Use this method to override the default resource name used (optional).
-  // This will be used on the next Connect() call.
-  void SetResourceName(const std::string& resource_name);
+ private:
+  class Core;
 
- private:
-  static buzz::PreXmppAuth* CreatePreXmppAuth(
-      const buzz::XmppClientSettings& settings);
-
-  void OnConnectionStateChanged(buzz::XmppEngine::State state);
-  void SetState(State new_state);
-
-  void SendKeepAlive();
-
-  net::ClientSocketFactory* socket_factory_;
-  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
-  std::string resource_name_;
-  scoped_ptr<rtc::TaskRunner> task_runner_;
-  buzz::XmppClient* xmpp_client_;
-  XmppServerConfig xmpp_server_config_;
-
-  State state_;
-  Error error_;
-
-  ObserverList<Listener, true> listeners_;
-
-  base::RepeatingTimer<XmppSignalStrategy> keep_alive_timer_;
+  scoped_ptr<Core> core_;
 
   DISALLOW_COPY_AND_ASSIGN(XmppSignalStrategy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_