Eliminate mojo::Shell client lib class

mojo/services/network/network_service_impl.h

 // Copyright 2014 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 MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_
 #define MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "mojo/services/network/public/interfaces/network_service.mojom.h"
-#include "mojo/shell/public/cpp/shell.h"
+#include "mojo/shell/public/cpp/message_loop_ref.h"
 #include "url/gurl.h"
 
 namespace mojo {
 
 class NetworkServiceImpl : public NetworkService {
  public:
-  NetworkServiceImpl(scoped_ptr<mojo::AppRefCount> app_refcount,
+  NetworkServiceImpl(scoped_ptr<mojo::MessageLoopRef> app_refcount,
                      InterfaceRequest<NetworkService> request);
   ~NetworkServiceImpl() override;
 
   // NetworkService methods:
   void CreateTCPBoundSocket(
       NetAddressPtr local_address,
       InterfaceRequest<TCPBoundSocket> bound_socket,
       const CreateTCPBoundSocketCallback& callback) override;
   void CreateTCPConnectedSocket(
       NetAddressPtr remote_address,
       ScopedDataPipeConsumerHandle send_stream,
       ScopedDataPipeProducerHandle receive_stream,
       InterfaceRequest<TCPConnectedSocket> client_socket,
       const CreateTCPConnectedSocketCallback& callback) override;
   void CreateUDPSocket(InterfaceRequest<UDPSocket> socket) override;
   void CreateHttpServer(NetAddressPtr local_address,
                         HttpServerDelegatePtr delegate,
                         const CreateHttpServerCallback& callback) override;
   void GetMimeTypeFromFile(
       const mojo::String& file_path,
       const GetMimeTypeFromFileCallback& callback) override;
 
  private:
-  scoped_ptr<mojo::AppRefCount> app_refcount_;
+  scoped_ptr<mojo::MessageLoopRef> app_refcount_;
   StrongBinding<NetworkService> binding_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_