Always use chromium threads for IO in remoting host

remoting/jingle_glue/xmpp_signal_strategy.h

 // Copyright (c) 2012 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_JINGLE_GLUE_XMPP_SIGNAL_STRATEGY_H_
 #define REMOTING_JINGLE_GLUE_XMPP_SIGNAL_STRATEGY_H_
 
 #include "remoting/jingle_glue/signal_strategy.h"
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "base/timer.h"
 #include "base/threading/non_thread_safe.h"
 #include "third_party/libjingle/source/talk/base/sigslot.h"
 #include "third_party/libjingle/source/talk/xmpp/xmppclient.h"
 
+namespace net {
+class URLRequestContextGetter;
+}  // namespace net
+
+namespace talk_base {
+class TaskRunner;
+}  // namespace talk_base
+
 namespace remoting {
 
 class JingleThread;
 
 class XmppSignalStrategy : public base::NonThreadSafe,
                            public SignalStrategy,
                            public buzz::XmppStanzaHandler,
                            public sigslot::has_slots<> {
  public:
-  XmppSignalStrategy(JingleThread* thread,
-                     const std::string& username,
-                     const std::string& auth_token,
-                     const std::string& auth_token_service);
+  XmppSignalStrategy(
+      scoped_refptr<net::URLRequestContextGetter> request_context_getter,
+      const std::string& username,
+      const std::string& auth_token,
+      const std::string& auth_token_service);
   virtual ~XmppSignalStrategy();
 
   // SignalStrategy interface.
   virtual void Connect() OVERRIDE;
   virtual void Disconnect() OVERRIDE;
   virtual State GetState() const OVERRIDE;
   virtual Error GetError() const OVERRIDE;
   virtual std::string GetLocalJid() const OVERRIDE;
   virtual void AddListener(Listener* listener) OVERRIDE;
   virtual void RemoveListener(Listener* listener) OVERRIDE;
@@ skipping 16 matching lines @@
 
  private:
   static buzz::PreXmppAuth* CreatePreXmppAuth(
       const buzz::XmppClientSettings& settings);
 
   void OnConnectionStateChanged(buzz::XmppEngine::State state);
   void SetState(State new_state);
 
   void SendKeepAlive();
 
-  JingleThread* thread_;
-
+  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   std::string username_;
   std::string auth_token_;
   std::string auth_token_service_;
   std::string resource_name_;
+  scoped_ptr<talk_base::TaskRunner> task_runner_;
   buzz::XmppClient* xmpp_client_;
 
   State state_;
   Error error_;
 
   ObserverList<Listener, true> listeners_;
 
   base::RepeatingTimer<XmppSignalStrategy> keep_alive_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(XmppSignalStrategy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_JINGLE_GLUE_XMPP_SIGNAL_STRATEGY_H_