remoting: Cleanup class/struct fwd declarations

remoting/protocol/session.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.
 
 #ifndef REMOTING_PROTOCOL_SESSION_H_
 #define REMOTING_PROTOCOL_SESSION_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "remoting/protocol/errors.h"
 #include "remoting/protocol/session_config.h"
 #include "remoting/protocol/transport.h"
 
-namespace buzz {
-class XmlElement;
-}  // namespace buzz
-
 namespace remoting {
 namespace protocol {
 
-class Authenicator;
-class StreamChannelFactory;
 class Transport;
-struct TransportRoute;
 
 // Session is responsible for initializing and authenticating both incoming and
 // outgoing connections. It uses TransportInfoSink interface to pass
 // transport-info messages to the transport.
 class Session {
  public:
   enum State {
     // Created, but not connecting yet.
     INITIALIZING,
 
@@ skipping 57 matching lines @@
   virtual void Close(ErrorCode error) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Session);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_SESSION_H_