Change IPEndpoint::address() to return a net::IPAddress

net/tools/gdig/gdig.cc

Index: net/tools/gdig/gdig.cc
diff --git a/net/tools/gdig/gdig.cc b/net/tools/gdig/gdig.cc
index 9a0176b140d6994f4a6a0baa81f7ceb25997193f..1618df908c263917acd8d13af3a50d8f7f60b350 100644
--- a/net/tools/gdig/gdig.cc
+++ b/net/tools/gdig/gdig.cc
@@ -381,7 +381,7 @@ bool GDig::ParseCommandLine(int argc, const char* argv[]) {
 }
 
 void GDig::Start() {
-  if (nameserver_.address().size() > 0) {
+  if (nameserver_.address_number().size() > 0) {
     DnsConfig dns_config;
     dns_config.attempts = 1;
     dns_config.nameservers.push_back(nameserver_);