Remove all blimp network code.

blimp/net/blimp_message_demultiplexer.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_DEMULTIPLEXER_H_
-#define BLIMP_NET_BLIMP_MESSAGE_DEMULTIPLEXER_H_
-
-#include <map>
-
-#include "base/containers/small_map.h"
-#include "base/macros.h"
-#include "base/threading/thread_checker.h"
-#include "blimp/common/proto/blimp_message.pb.h"
-#include "blimp/net/blimp_message_processor.h"
-#include "blimp/net/blimp_net_export.h"
-
-namespace blimp {
-
-// Multiplexing BlimpMessageProcessor which routes BlimpMessages to message
-// processors based on the specific feature.
-// BlimpMessageDemultiplexer is created on the UI thread, and then used and
-// destroyed on the IO thread.
-class BLIMP_NET_EXPORT BlimpMessageDemultiplexer
-    : public BlimpMessageProcessor {
- public:
-  BlimpMessageDemultiplexer();
-  ~BlimpMessageDemultiplexer() override;
-
-  // Registers a message processor which will receive all messages
-  // of the |feature_case| specified.
-  // Only one handler may be added per type.
-  //
-  // |handler| must be valid when ProcessMessage() is called.
-  void AddProcessor(BlimpMessage::FeatureCase feature_case,
-                    BlimpMessageProcessor* handler);
-
-  // BlimpMessageProcessor implementation.
-  void ProcessMessage(std::unique_ptr<BlimpMessage> message,
-                      const net::CompletionCallback& callback) override;
-
- private:
-  base::SmallMap<std::map<BlimpMessage::FeatureCase, BlimpMessageProcessor*>>
-      feature_receiver_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlimpMessageDemultiplexer);
-};
-
-}  // namespace blimp
-
-#endif  // BLIMP_NET_BLIMP_MESSAGE_DEMULTIPLEXER_H_