Move URL Loader creation to a separate factory object.

mojo/services/network/public/interfaces/network_service.mojom

 // 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.
 
 module mojo;
 
 import "network/public/interfaces/cookie_store.mojom";
 import "network/public/interfaces/http_server.mojom";
 import "network/public/interfaces/net_address.mojom";
 import "network/public/interfaces/network_error.mojom";
 import "network/public/interfaces/tcp_bound_socket.mojom";
 import "network/public/interfaces/tcp_connected_socket.mojom";
 import "network/public/interfaces/udp_socket.mojom";
-import "network/public/interfaces/url_loader.mojom";
 import "network/public/interfaces/web_socket.mojom";
 
 // TODO Darin suggests that this should probably be two classes. One for
 // high-level origin-build requests like WebSockets and HTTP, and the other for
 // non-origin-bound low-level stuff like DNS, UDP, and TCP.
 interface NetworkService {
-  CreateURLLoader(URLLoader& loader);
-
   GetCookieStore(CookieStore& cookie_store);
 
   CreateWebSocket(WebSocket& socket);
 
   // Creates a TCP socket bound to a given local address. This bound socket
   // can be used for creating a client or server socket on that local address.
   //
   // If you want to create a client socket to connect to a server and are in
   // the common case where you don't care about the local address it's bound
   // to, use CreateTCPConnectedSocket.
@@ skipping 33 matching lines @@
   // The local address can specify 0 for the port to specify that the OS should
   // pick an available port for the given address, or it can pass 0 for the
   // address and port for the OS to pick both the local address and port. In
   // all success cases, the resulting local address will be passed to the
   // callback as bound_to.
   CreateHttpServer(NetAddress local_address,
                    HttpServerDelegate delegate)
       => (NetworkError result,
           NetAddress? bound_to);
 };