Implement utility-side host resolver Mojo client.

net/dns/type_converters.cc

Index: net/dns/type_converters.cc
diff --git a/net/dns/type_converters.cc b/net/dns/type_converters.cc
index e2f1f67fdbd27833f22e47db6728c0c88e41ad5d..1d114700c76eba129b4fc5186ff3974628c84c3d 100644
--- a/net/dns/type_converters.cc
+++ b/net/dns/type_converters.cc
@@ -8,6 +8,34 @@
 #include "net/base/net_util.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/type_converter.h"
 
+namespace net {
+namespace {
+
+AddressFamily AddressFamilyFromMojo(interfaces::AddressFamily address_family) {
+  switch (address_family) {
+    case interfaces::ADDRESS_FAMILY_UNSPECIFIED:
+      return ADDRESS_FAMILY_UNSPECIFIED;
+    case interfaces::ADDRESS_FAMILY_IPV4:
+      return ADDRESS_FAMILY_IPV4;
+    case interfaces::ADDRESS_FAMILY_IPV6:
+      return ADDRESS_FAMILY_IPV6;
+  }
+}
+
+interfaces::AddressFamily AddressFamilyToMojo(AddressFamily address_family) {
+  switch (address_family) {
+    case ADDRESS_FAMILY_UNSPECIFIED:
+      return interfaces::ADDRESS_FAMILY_UNSPECIFIED;
+    case ADDRESS_FAMILY_IPV4:
+      return interfaces::ADDRESS_FAMILY_IPV4;
+    case ADDRESS_FAMILY_IPV6:
+      return interfaces::ADDRESS_FAMILY_IPV6;
+  }
+}
+
+}  // namespace
+}  // namespace net
+
 namespace mojo {
 
 // static
@@ -16,12 +44,25 @@ TypeConverter<net::HostResolver::RequestInfo,
               net::interfaces::HostResolverRequestInfo>::
     Convert(const net::interfaces::HostResolverRequestInfo& obj) {
   net::HostResolver::RequestInfo result(net::HostPortPair(obj.host, obj.port));
-  result.set_address_family(
-      static_cast<net::AddressFamily>(obj.address_family));
+  result.set_address_family(net::AddressFamilyFromMojo(obj.address_family));
   return result;
 }
 
 // static
+net::interfaces::HostResolverRequestInfoPtr
+TypeConverter<net::interfaces::HostResolverRequestInfoPtr,
+              net::HostResolver::RequestInfo>::
+    Convert(const net::HostResolver::RequestInfo& obj) {
+  net::interfaces::HostResolverRequestInfoPtr result(
+      net::interfaces::HostResolverRequestInfo::New());
+  result->host = obj.hostname();
+  result->port = obj.port();
+  result->address_family = net::AddressFamilyToMojo(obj.address_family());
+  result->is_my_ip_address = obj.is_my_ip_address();
+  return result.Pass();
+}
+
+// static
 net::interfaces::AddressListPtr
 TypeConverter<net::interfaces::AddressListPtr, net::AddressList>::Convert(
     const net::AddressList& obj) {