Remove all blimp network code.

blimp/net/engine_authentication_handler.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_ENGINE_AUTHENTICATION_HANDLER_H_
-#define BLIMP_NET_ENGINE_AUTHENTICATION_HANDLER_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "blimp/net/blimp_net_export.h"
-#include "blimp/net/connection_handler.h"
-
-namespace blimp {
-
-class BlimpConnection;
-
-// Authenticates connections and passes successfully authenticated connections
-// to |connection_handler|.
-class BLIMP_NET_EXPORT EngineAuthenticationHandler : public ConnectionHandler {
- public:
-  // |client_auth_token|: used to authenticate incoming connection.
-  // |connection_handler|: a new connection is passed on to it after the
-  //    connection is authenticate this handler.
-  EngineAuthenticationHandler(ConnectionHandler* connection_handler,
-                              const std::string& client_auth_token);
-
-  ~EngineAuthenticationHandler() override;
-
-  // ConnectionHandler implementation.
-  void HandleConnection(std::unique_ptr<BlimpConnection> connection) override;
-
- private:
-  // Used to abandon pending authenticated connections if |this| is deleted.
-  base::WeakPtrFactory<ConnectionHandler> connection_handler_weak_factory_;
-
-  // Used to authenticate incoming connection. Engine is assigned to one client
-  // only, and all connections from that client shall carry the same token.
-  const std::string client_auth_token_;
-
-  DISALLOW_COPY_AND_ASSIGN(EngineAuthenticationHandler);
-};
-
-}  // namespace blimp
-
-#endif  // BLIMP_NET_ENGINE_AUTHENTICATION_HANDLER_H_