Add path open errors from the permission broker to the device log.

device/usb/usb_device_impl.h

Index: device/usb/usb_device_impl.h
diff --git a/device/usb/usb_device_impl.h b/device/usb/usb_device_impl.h
index e41dac090f8e8b0f5269f15ad7ce0cd5b157faf1..40bfd1ec345a5803117be0b2fae701cdc42cf130 100644
--- a/device/usb/usb_device_impl.h
+++ b/device/usb/usb_device_impl.h
@@ -97,6 +97,9 @@ class UsbDeviceImpl : public UsbDevice {
 #if defined(OS_CHROMEOS)
   void OnOpenRequestComplete(const OpenCallback& callback,
                              dbus::FileDescriptor fd);
+  void OnOpenRequestError(const OpenCallback& callback,
+                          const std::string& error_name,
+                          const std::string& error_message);
   void OpenOnBlockingThreadWithFd(dbus::FileDescriptor fd,
                                   const OpenCallback& callback);
 #endif