Simplify message parsing.

remoting/protocol/channel_dispatcher_base.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_CHANNEL_DISPATCHER_BASE_H_
 #define REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 37 matching lines @@
 
   const std::string& channel_name() { return channel_name_; }
 
   // Returns true if the channel is currently connected.
   bool is_connected() { return channel_ != nullptr; }
 
  protected:
   explicit ChannelDispatcherBase(const char* channel_name);
 
   BufferedSocketWriter* writer() { return &writer_; }
-  MessageReader* reader() { return &reader_; }
+
+  // Child classes must override this method to handle incoming messages.
+  virtual void OnIncomingMessage(scoped_ptr<CompoundBuffer> message) = 0;
 
  private:
   void OnChannelReady(scoped_ptr<P2PStreamSocket> socket);
   void OnReadWriteFailed(int error);
 
   std::string channel_name_;
   StreamChannelFactory* channel_factory_;
   EventHandler* event_handler_;
   scoped_ptr<P2PStreamSocket> channel_;
 
   BufferedSocketWriter writer_;
   MessageReader reader_;
 
   DISALLOW_COPY_AND_ASSIGN(ChannelDispatcherBase);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_