Remove all blimp network code.

blimp/net/blimp_message_processor.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_PROCESSOR_H_
-#define BLIMP_NET_BLIMP_MESSAGE_PROCESSOR_H_
-
-#include <memory>
-
-#include "net/base/completion_callback.h"
-
-namespace blimp {
-
-class BlimpMessage;
-
-// Interface implemented by components that process BlimpMessages.
-// Message processing workflows can be created as a filter chain of
-// BlimpMessageProcessors, and test processors can be added to validate portions
-// of the filter chain in isolation.
-class BlimpMessageProcessor {
- public:
-  virtual ~BlimpMessageProcessor() {}
-
-  // Processes the BlimpMessage asynchronously.
-  // The result of the operation is returned to the caller via |callback|.
-  virtual void ProcessMessage(std::unique_ptr<BlimpMessage> message,
-                              const net::CompletionCallback& callback) = 0;
-};
-
-}  // namespace blimp
-
-#endif  // BLIMP_NET_BLIMP_MESSAGE_PROCESSOR_H_