Refactor of Authenticator to allow it to ProcessMessage asynchronously and then call a callback

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 "remoting/protocol/errors.h"
@@ skipping 11 matching lines @@
 
 // Generic interface for Chromotocol connection used by both client and host.
 // Provides access to the connection channels, but doesn't depend on the
 // protocol used for each channel.
 class Session {
  public:
   enum State {
     // Created, but not connecting yet.
     INITIALIZING,
 
-    // Sent or received session-initiate, but haven't sent or received
-    // session-accept.
-    // TODO(sergeyu): Do we really need this state?
+    // Sent session-initiate, but haven't received session-accept.
     CONNECTING,
 
+    // Received session-initiate, but haven't sent session-accept.
+    ACCEPTING,
+
     // Session has been accepted and is pending authentication.
     CONNECTED,
 
     // Session has been connected and authenticated.
     AUTHENTICATED,
 
     // Session has been closed.
     CLOSED,
 
     // Connection has failed.
@@ skipping 63 matching lines @@
   virtual void Close() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Session);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_SESSION_H_