Reimplements net::AddressList without struct addrinfo.

content/browser/renderer_host/p2p/socket_dispatcher_host.cc

Index: content/browser/renderer_host/p2p/socket_dispatcher_host.cc
diff --git a/content/browser/renderer_host/p2p/socket_dispatcher_host.cc b/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
index ef9a094a4110d40431a88022c619e05c53192101..eaf7beb1293b08b65a45e619d51dc47eaf5e6793 100644
--- a/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
+++ b/content/browser/renderer_host/p2p/socket_dispatcher_host.cc
@@ -72,22 +72,15 @@ class P2PSocketDispatcherHost::DnsRequest {
       return;
     }
 
-    if (addresses_.head() == NULL) {
+    // TODO(szym): Redundant check. http://crbug.com/126211
+    if (addresses_.empty()) {
       LOG(ERROR) << "Received 0 addresses when trying to resolve address for "
                  << host_name_;
       done_callback_.Run(net::IPAddressNumber());
       return;
     }
 
-    net::IPEndPoint end_point;
-    if (!end_point.FromSockAddr(addresses_.head()->ai_addr,
-                                addresses_.head()->ai_addrlen)) {
-      LOG(ERROR) << "Received invalid address for " << host_name_;
-      done_callback_.Run(net::IPAddressNumber());
-      return;
-    }
-
-    done_callback_.Run(end_point.address());
+    done_callback_.Run(addresses_.front().address());
   }
 
   int32 routing_id_;