Implement browser-side host resolver Mojo service.

net/dns/type_converters.h

+// 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.
+
+#ifndef NET_INTERFACES_TYPE_CONVERTERS_H_
+#define NET_INTERFACES_TYPE_CONVERTERS_H_
+
+#include "net/dns/host_resolver.h"
+#include "net/interfaces/host_resolver_service.mojom.h"
+
+namespace mojo {
+
+template <>
+struct TypeConverter<net::HostResolver::RequestInfo,

[eroman, 2015/02/05 19:51:11]

What are these about?

[Anand Mistry (off Chromium), 2015/02/06 06:32:41]

Type converters are the canonical Mojo way to convert between different types,
specifically to/from mojo structs. See
https://code.google.com/p/chromium/codesearch#chromium/src/mojo/common/common...
for a few common examples.

+                     net::interfaces::HostResolverRequestInfo> {
+  static net::HostResolver::RequestInfo Convert(
+      const net::interfaces::HostResolverRequestInfo& obj);
+};
+
+template <>
+struct TypeConverter<net::interfaces::AddressListPtr, net::AddressList> {
+  static net::interfaces::AddressListPtr Convert(const net::AddressList& obj);
+};
+
+template <>
+struct TypeConverter<net::AddressList, net::interfaces::AddressList> {
+  static net::AddressList Convert(const net::interfaces::AddressList& obj);
+};
+
+}  // namespace mojo
+
+#endif  // NET_INTERFACES_TYPE_CONVERTERS_H_