fix show snackbar (#989)

src/deprecated/platformSpecificDeprecated.android.js

@@ -593,7 +593,7 @@ function addNavigationStyleParams(screen) {
   screen.navigatorStyle = Object.assign({}, Screen.navigatorStyle, screen.navigatorStyle);
 }
 
-function showSnackbar(params) {
+function showSnackbar(navigator, params) {
   const adapted = _.cloneDeep(params);
   if (adapted.backgroundColor) {
     adapted.backgroundColor = processColor(adapted.backgroundColor);