http_server: accept full NetAddress in CreateHttpServer.

services/http_server/public/http_server_factory.mojom

 // 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.
 
 module http_server;
 
+import "mojo/services/network/public/interfaces/net_address.mojom";
 import "services/http_server/public/http_server.mojom";
 
 interface HttpServerFactory {
-  // Creates an http server running on the specified TCP port. If |port| is 0,
-  // the operating system will pick one of available ports. You can use
-  // HttpServer::GetPort() to retrieve the allocated port.
+  // Creates an http server running on the specified local network address.  If
+  // |local_address| is null, it will take the default value of 0.0.0.0 at a
+  // system-allocated port.
   //
-  // Only one backing server will be created for each port. It will be shared
-  // among clients, if more than one client requests a server running on a
-  // particular port.
+  // Note that the port value of 0 means that the operating system will pick
+  // one of available ports. You can use HttpServer::GetPort() to retrieve the
+  // allocated port.
+  //
+  // Only one backing server will be created for each local network address. It
+  // will be shared among clients, if more than one client requests a server
+  // running on a particular network address.
   //
   // TODO(ppi): would it be better to create a server only for the first caller
   // and require the access to it to be explicitly shared by the party that
   // requests it first?
-  CreateHttpServer(HttpServer& server_request, uint16 port);
+  CreateHttpServer(HttpServer& server_request, mojo.NetAddress? local_address);
 };