ref(base/react/Container): return null for not visible

Now that we no longer hide the filmstrip it is fine to return null
instead of trying to hide with some tricks.

react/features/base/react/components/native/Container.js

@@ -7,7 +7,6 @@ import {
     View
 } from 'react-native';
 
-import { Platform } from '../../';
 import AbstractContainer from '../AbstractContainer';
 
 /**
@@ -39,28 +38,20 @@ export default class Container extends AbstractContainer {
 
         // visible
         if (!visible) {
-            // FIXME: It turns out that display: none will fail on some Android
-            // devices, but work on the others (currently fails on Google Pixel)
-            if (Platform.OS === 'android') {
             return null;
         }
 
-            // Intentionally hide this Container without destroying it.
-            props.style = {
-                ...props.style,
-                display: 'none'
-            };
-        }
-
         let element = super._render(View, props);
 
         // onClick & touchFeedback
-        if (visible && (onClick || touchFeedback)) {
-            element = React.createElement(
-                touchFeedback ? TouchableHighlight : TouchableWithoutFeedback,
-                { onPress: onClick },
+        if (element && (onClick || touchFeedback)) {
             element
-            );
+                = React.createElement(
+                    touchFeedback
+                        ? TouchableHighlight
+                        : TouchableWithoutFeedback,
+                    { onPress: onClick },
+                    element);
         }
 
         return element;

react/features/toolbox/components/Toolbox.native.js

@@ -120,16 +120,13 @@ class Toolbox extends Component {
      * @returns {ReactElement}
      */
     render() {
-        if (!this.props._visible) {
-            return null;
-        }
-
         return (
             <Container
                 style = {
                     isNarrowAspectRatio(this)
                         ? styles.toolbarContainerNarrow
-                        : styles.toolbarContainerWide } >
+                        : styles.toolbarContainerWide }
+                visible = { this.props._visible } >
                 {
                     isNarrowAspectRatio(this)
                         ? this._renderSecondaryToolbar()