Add DatagramClientSocket::BindToDefaultNetwork(),GetBoundNetwork()

net/dns/address_sorter_posix_unittest.cc

Index: net/dns/address_sorter_posix_unittest.cc
diff --git a/net/dns/address_sorter_posix_unittest.cc b/net/dns/address_sorter_posix_unittest.cc
index ab63ac49d9c5c50ca9ac581ecc47e0cc17c4dee8..9d7916dd1538fdf197ffc853809f8fd8813b5cbd 100644
--- a/net/dns/address_sorter_posix_unittest.cc
+++ b/net/dns/address_sorter_posix_unittest.cc
@@ -59,7 +59,14 @@ class TestUDPClientSocket : public DatagramClientSocket {
   }
   int BindToNetwork(NetworkChangeNotifier::NetworkHandle network) override {
     NOTIMPLEMENTED();
-    return OK;
+    return ERR_NOT_IMPLEMENTED;
+  }
+  int BindToDefaultNetwork() override {
+    NOTIMPLEMENTED();
+    return ERR_NOT_IMPLEMENTED;
+  }
+  NetworkChangeNotifier::NetworkHandle GetBoundNetwork() override {
+    return NetworkChangeNotifier::kInvalidNetworkHandle;
   }
 
   int Connect(const IPEndPoint& remote) override {