Add CheckPortalList manager property to NetworkStateHandler

chromeos/network/shill_property_handler_unittest.cc

Index: chromeos/network/shill_property_handler_unittest.cc
diff --git a/chromeos/network/shill_property_handler_unittest.cc b/chromeos/network/shill_property_handler_unittest.cc
index a3ee1d492e8d329263dd4e344455e7f9b1599deb..36cf83c30dbaa2cf435573675b1351deceeed034 100644
--- a/chromeos/network/shill_property_handler_unittest.cc
+++ b/chromeos/network/shill_property_handler_unittest.cc
@@ -71,6 +71,10 @@ class TestListener : public internal::ShillPropertyHandler::Listener {
     ++manager_updates_;
   }
 
+  virtual void CheckPortalListChanged(
+      const std::string& check_portal_list) OVERRIDE {
+  }
+
   virtual void ManagedStateListChanged(
       ManagedState::ManagedType type) OVERRIDE {
     AddStateListUpdate(GetTypeString(type));