[Media Router] Add MediaSink subtypes

net/interfaces/host_resolver_service.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.
 
 // WARNING! Do NOT use this mojom. It is intended as a temporary interface to
 // implement out-of-process proxy resolution. If you wish to use a Mojo DNS
 // service, contact amistry@/sammc@ and net-dev to discuss a permanent Mojo DNS
 // interface.
 
 // Put Mojo definitions into their own namespace to avoid collisions with C++
 // definitions.
 // TODO(amistry): Resolve the conflict between these two sets of definitions.
 module net.interfaces;
 
 // Mirror of net::AddressFamily.
 enum AddressFamily {
   UNSPECIFIED,
   IPV4,
   IPV6,
 };
 
 // Mirror of net::HostResolver::RequestInfo.
 struct HostResolverRequestInfo {
   string host;
   uint16 port;
   AddressFamily address_family;
   bool is_my_ip_address;
 };
 
+// Mirror of net::IPAddress.
+struct IPAddress {
+  // IP address as a numeric value from most to least significant byte.
+  // Will be of length 4 for IPv4 addresses and 16 for IPv6.
+  array<uint8> address;
+};
+
 // Mirror of net::IPEndPoint.
 struct IPEndPoint {
   // IP address as a numeric value from most to least significant byte.
   // Will be of length 4 for IPv4 addresses and 16 for IPv6.
   array<uint8> address;
   uint16 port;
 };
 
 // Mirror of net::AddressList.
 struct AddressList {
   array<IPEndPoint> addresses;
 };
 
 interface HostResolverRequestClient {
   // |error| is a value in net::Error.
   ReportResult(int32 error, AddressList result);
 };