Blimp: create MessageDispatcher class.

blimp/net/blimp_message_receiver.h

+// Copyright 2015 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 BLIMP_NET_BLIMP_MESSAGE_RECEIVER_H_
+#define BLIMP_NET_BLIMP_MESSAGE_RECEIVER_H_
+
+#include "net/base/net_errors.h"
+
+namespace blimp {
+
+class BlimpMessage;
+
+// Interface implemented by components that process BlimpMessages.
+class BlimpMessageReceiver {
+ public:
+  virtual ~BlimpMessageReceiver() {}
+
+  // Processes the BlimpMessage, or returns a net::ERR_* on error.
+  // If an error code is returned, callers should terminate the connection
+  // from which |message| was received.
+  virtual net::Error OnBlimpMessage(const BlimpMessage& message) = 0;
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_NET_BLIMP_MESSAGE_RECEIVER_H_