Remove event_channel() and control_channel() from Session interface.

remoting/protocol/channel_dispatcher_base.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_CHANNEL_DISPATCHER_BASE_H_
+#define REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace net {
+class StreamSocket;
+}  // namespace net
+
+namespace remoting {
+namespace protocol {
+
+class Session;
+
+// Base class for channel message dispatchers. It's responsible for
+// creating the named channel. Derived dispatchers then dispatch
+// incoming messages on this channel as well as send outgoing
+// messages.
+class ChannelDispatcherBase {
+ public:
+  // The callback is called when initialization is finished. The
+  // parameter is set to true on success.
+  typedef base::Callback<void(bool)> InitializedCallback;
+
+  virtual ~ChannelDispatcherBase();
+
+  // Creates and connects the channel in the specified
+  // |session|. Caller retains ownership of the Session.
+  void Init(Session* session, const InitializedCallback& callback);
+
+  // Returns true if the channel is currently connected.
+  bool is_connected() { return channel() != NULL; }
+
+ protected:
+  explicit ChannelDispatcherBase(const char* channel_name);
+
+  net::StreamSocket* channel() { return channel_.get(); }
+
+  // Called when channel is initialized. Must be overriden in the
+  // child classes. Should not delete the dispatcher.
+  virtual void OnInitialized() = 0;
+
+ private:
+  void OnChannelReady(net::StreamSocket* socket);
+
+  std::string channel_name_;
+  Session* session_;
+  InitializedCallback initialized_callback_;
+  scoped_ptr<net::StreamSocket> channel_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChannelDispatcherBase);
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_