ref(NotificationsContainer.native): simplify

The outer container is not necessary if 'justifyContent: flex-end' is
used with the absolute fill on the main container.

react/features/notifications/components/NotificationsContainer.native.js

@@ -8,6 +8,7 @@ import {
     isNarrowAspectRatio,
     makeAspectRatioAware
 } from '../../base/responsive-ui';
+import { BoxModel } from '../../base/styles';
 import { FILMSTRIP_SIZE, isFilmstripVisible } from '../../filmstrip';
 import { HANGUP_BUTTON_SIZE } from '../../toolbox';
 
@@ -34,7 +35,7 @@ type Props = AbstractProps & {
 /**
  * The margin of the container to be kept from other components.
  */
-const CONTAINER_MARGIN = 10;
+const CONTAINER_MARGIN = BoxModel.margin;
 
 /**
  * Implements a React {@link Component} which displays notifications and handles
@@ -61,28 +62,24 @@ class NotificationsContainer extends AbstractNotificationsContainer<Props> {
         return (
             <View
                 pointerEvents = 'box-none'
-                style = { styles.notificationOverlay }>
-                <View
-                    pointerEvents = 'box-none'
-                    style = { [
-                        styles.notificationContainer,
-                        this._getContainerStyle()
-                    ] }>
-                    {
-                        _notifications.map(notification => {
-                            const { props, uid } = notification;
-
-                            return (
-                                <Notification
-                                    { ...props }
-                                    key = { uid }
-                                    onDismissed = { this._onDismissed }
-                                    uid = { uid } />
-
-                            );
-                        })
-                    }
-                </View>
+                style = { [
+                    styles.notificationContainer,
+                    this._getContainerStyle()
+                ] }>
+                {
+                    _notifications.map(notification => {
+                        const { props, uid } = notification;
+
+                        return (
+                            <Notification
+                                { ...props }
+                                key = { uid }
+                                onDismissed = { this._onDismissed }
+                                uid = { uid } />
+
+                        );
+                    })
+                }
             </View>
         );
     }

react/features/notifications/components/styles.js

@@ -48,12 +48,9 @@ export default createStyleSheet({
      * Outermost container of a list of notifications.
      */
     notificationContainer: {
-        alignItems: 'flex-start',
-        bottom: 0,
-        left: 0,
-        padding: 2 * BoxModel.padding,
-        position: 'absolute',
-        right: 0
+        ...StyleSheet.absoluteFillObject,
+        justifyContent: 'flex-end',
+        padding: 2 * BoxModel.padding
     },
 
     /**
@@ -64,13 +61,6 @@ export default createStyleSheet({
         paddingVertical: 0.5 * BoxModel.padding
     },
 
-    /**
-     * A full screen overlay to help to position the container.
-     */
-    notificationOverlay: {
-        ...StyleSheet.absoluteFillObject
-    },
-
     /**
      * The View containing the title.
      */