Implement new network change notifier that uses NetworkStateHandler

chromeos/network/network_state.h

Index: chromeos/network/network_state.h
diff --git a/chromeos/network/network_state.h b/chromeos/network/network_state.h
index b5f73761ae7e63cf5a9f36e9abfc0762bb2aa4fd..e28be5dc33846481f8fb148c161a7fb20f0920ae 100644
--- a/chromeos/network/network_state.h
+++ b/chromeos/network/network_state.h
@@ -7,6 +7,10 @@
 
 #include "chromeos/network/managed_state.h"
 
+namespace net {
+class NetworkChangeNotifierChromeosUpdateTest;
+}
+
 namespace chromeos {
 
 // Simple class to provide network state information about a network service.
@@ -43,6 +47,7 @@ class CHROMEOS_EXPORT NetworkState : public ManagedState {
 
  private:
   friend class NetworkStateHandler;
+  friend class net::NetworkChangeNotifierChromeosUpdateTest;
 
   // Called by NetworkStateHandler when the ip config changes.
   void set_ip_address(const std::string& ip_address) {