Add DatagramClientSocket::BindToDefaultNetwork(),GetBoundNetwork()

net/base/network_change_notifier.cc

Index: net/base/network_change_notifier.cc
diff --git a/net/base/network_change_notifier.cc b/net/base/network_change_notifier.cc
index fb480e9705f2c418b32ca57a2e80888fd9c20aa0..c51eb8752d4c365ccf7c63b5500675817397980d 100644
--- a/net/base/network_change_notifier.cc
+++ b/net/base/network_change_notifier.cc
@@ -11,6 +11,7 @@
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "build/build_config.h"
+#include "net/base/net_errors.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier_factory.h"
 #include "net/base/network_interfaces.h"
@@ -652,11 +653,11 @@ NetworkChangeNotifier::GetNetworkConnectionType(NetworkHandle network) {
 }
 
 // static
-NetworkChangeNotifier::NetworkHandle
-NetworkChangeNotifier::GetDefaultNetwork() {
+int NetworkChangeNotifier::GetDefaultNetwork(
+    NetworkChangeNotifier::NetworkHandle* network) {
   return g_network_change_notifier
-             ? g_network_change_notifier->GetCurrentDefaultNetwork()
-             : kInvalidNetworkHandle;
+             ? g_network_change_notifier->GetCurrentDefaultNetwork(network)
+             : ERR_FAILED;
 }
 
 // static
@@ -989,9 +990,9 @@ NetworkChangeNotifier::GetCurrentNetworkConnectionType(
   return CONNECTION_UNKNOWN;
 }
 
-NetworkChangeNotifier::NetworkHandle
-NetworkChangeNotifier::GetCurrentDefaultNetwork() const {
-  return kInvalidNetworkHandle;
+int NetworkChangeNotifier::GetCurrentDefaultNetwork(
+    NetworkChangeNotifier::NetworkHandle* network) const {
+  return ERR_NOT_IMPLEMENTED;
 }
 
 // static