Eliminate mojo::Shell client lib class

mojo/services/network/web_socket_factory_impl.cc

 // 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.
 
 #include "mojo/services/network/web_socket_factory_impl.h"
 
 #include <utility>
 
 #include "mojo/services/network/web_socket_impl.h"
 
 namespace mojo {
 
 WebSocketFactoryImpl::WebSocketFactoryImpl(
     NetworkContext* context,
-    scoped_ptr<AppRefCount> app_refcount,
+    scoped_ptr<MessageLoopRef> app_refcount,
     InterfaceRequest<WebSocketFactory> request)
     : context_(context),
       app_refcount_(std::move(app_refcount)),
       binding_(this, std::move(request)) {}
 
 WebSocketFactoryImpl::~WebSocketFactoryImpl() {
 }
 
 void WebSocketFactoryImpl::CreateWebSocket(InterfaceRequest<WebSocket> socket) {
   new WebSocketImpl(context_, app_refcount_->Clone(), std::move(socket));
 }
 
 }  // namespace mojo