Fix reconnect in case of empty global network policy.

chromeos/network/network_connection_handler.h

Index: chromeos/network/network_connection_handler.h
diff --git a/chromeos/network/network_connection_handler.h b/chromeos/network/network_connection_handler.h
index cc85a2ff423f4ea4cd5c6208360d07a14ece2660..73ecd669a4b80ba88a926c0eff053b19ee8eb19d 100644
--- a/chromeos/network/network_connection_handler.h
+++ b/chromeos/network/network_connection_handler.h
@@ -215,6 +215,10 @@ class CHROMEOS_EXPORT NetworkConnectionHandler
   // when the device policy is changed.
   void DisconnectIfPolicyRequires();
 
+  // Disconnects from all unmanaged and shared WiFi networks that are currently
+  // connected or connecting.
+  void DisconnectFromUnmanagedSharedWiFiNetworks();
+
   // Requests a connect to the 'best' available network once after login and
   // after any disconnect required by policy is executed (see
   // DisconnectIfPolicyRequires()). To include networks with client