Add new InternetAddress class with a static lookup function (including IPv6 results).

runtime/bin/vmstats_impl.cc

Index: runtime/bin/vmstats_impl.cc
diff --git a/runtime/bin/vmstats_impl.cc b/runtime/bin/vmstats_impl.cc
index d2e0af679d2f5933c7fc81d960170ce9b0e20c4c..2ea94e27261db3d00ce34ad7d6848b19a46e7533 100644
--- a/runtime/bin/vmstats_impl.cc
+++ b/runtime/bin/vmstats_impl.cc
@@ -55,13 +55,14 @@ void VmStats::StartServer(int port, const char* root_dir) {
   // TODO(tball): allow host to be specified.
   char* host = const_cast<char*>(DEFAULT_HOST);
   OSError* os_error;
-  const char* host_ip = Socket::LookupIPv4Address(host, &os_error);
-  if (host_ip == NULL) {
+  SocketAddresses* addresses = Socket::LookupAddress(host, &os_error);
+  if (addresses == NULL) {
     Log::PrintErr("Failed IP lookup of VmStats host %s: %s\n",
                   host, os_error->message());
     return;
   }
-
+/*
+  FIXME!
   const intptr_t BACKLOG = 128;  // Default value from HttpServer.dart
   int64_t address = ServerSocket::CreateBindListen(host_ip, port, BACKLOG);
   if (address < 0) {
@@ -78,6 +79,7 @@ void VmStats::StartServer(int port, const char* root_dir) {
     Log::PrintErr("Failed starting VmStats thread: %d\n", err);
     Shutdown();
   }
+  */
 }
 
 void VmStats::Stop() {