Refactor channel dispatchers on the host side.

remoting/protocol/host_input_dispatcher.h

+// 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.
+
+#ifndef REMOTING_PROTOCOL_HOST_INPUT_DISPATCHER_H_
+#define REMOTING_PROTOCOL_HOST_INPUT_DISPATCHER_H_
+
+#include "base/basictypes.h"
+#include "remoting/protocol/message_reader.h"
+
+namespace remoting {
+namespace protocol {
+
+class EventMessage;
+class InputStub;
+class Session;
+
+// A message dispatcher used to listen for messages received in
+// protocol::Session. It dispatches messages to the corresponding
+// handler.
+class HostInputDispatcher {
+ public:
+  typedef base::Callback<void(int64)> SequenceNumberCallback;
+
+  HostInputDispatcher();
+  virtual ~HostInputDispatcher();
+
+  // Initialize the message dispatcher with the given connection and
+  // message handlers.

[Wez, 2011/11/17 02:03:40]

How are they used, and who owns them, etc?

[Sergey Ulanov, 2011/11/17 18:38:14]

Done.

+  void Init(Session* session,
+            InputStub* input_stub,
+            const SequenceNumberCallback& seq_num_callback);

[Wez, 2011/11/17 02:03:40]

Style guide says no abbreviated names. :(

[Sergey Ulanov, 2011/11/17 18:38:14]

Done.

+
+  void Close();
+
+ private:
+  // This method is called by |reader_| when a message is received.
+  void OnMessageReceived(EventMessage* message,
+                         const base::Closure& done_task);
+
+  InputStub* input_stub_;
+  SequenceNumberCallback seq_num_callback_;
+
+  ProtobufMessageReader<EventMessage> reader_;
+
+  DISALLOW_COPY_AND_ASSIGN(HostInputDispatcher);
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_HOST_INPUT_DISPATCHER_H_