Don't set MAC address randomization when unsupported

chromeos/network/network_device_handler_impl.h

Index: chromeos/network/network_device_handler_impl.h
diff --git a/chromeos/network/network_device_handler_impl.h b/chromeos/network/network_device_handler_impl.h
index 6020a23c5bad828159324d5544b61de4516670b9..25b9b6e182d620f6c86a5430603ccb068192fea0 100644
--- a/chromeos/network/network_device_handler_impl.h
+++ b/chromeos/network/network_device_handler_impl.h
@@ -134,13 +134,18 @@ class CHROMEOS_EXPORT NetworkDeviceHandlerImpl
   // Apply the current value of |mac_addr_randomization_| to wifi devices.
   void ApplyMACAddressRandomizationToShill();
 
+  void SetMACAddressRandomizationErrorCallback(
+      const std::string& error_name,
+      std::unique_ptr<base::DictionaryValue> error_data);
+
   // Get the DeviceState for the wifi device, if any.
   const DeviceState* GetWifiDeviceState(
       const network_handler::ErrorCallback& error_callback);
 
   NetworkStateHandler* network_state_handler_;
   bool cellular_allow_roaming_;
-  bool mac_addr_randomization_;
+  bool mac_addr_randomization_supported_;
+  bool mac_addr_randomization_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkDeviceHandlerImpl);
 };