core: legacy toasts deserve rounded corners too

Fixes regression caused by 2de4846

Change-Id: Ib113ecb5270c0732b0cd550717308f775e3c8914

core/res/res/drawable/toast_frame_legacy.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* Copyright 2017, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <solid android:color="?android:attr/colorBackground" />
+    <corners android:radius="28dp" />
+</shape>
+

core/res/res/layout/transient_notification.xml

@@ -25,7 +25,7 @@
     android:orientation="horizontal"
     android:gravity="center_vertical"
     android:maxWidth="@dimen/toast_width"
-    android:background="?android:attr/colorBackground"
+    android:background="@drawable/toast_frame_legacy"
     android:elevation="@dimen/toast_elevation"
     android:layout_marginEnd="16dp"
     android:layout_marginStart="16dp"

core/res/res/layout/transient_notification_with_icon.xml

@@ -22,7 +22,7 @@
     android:orientation="horizontal"
     android:gravity="center_vertical"
     android:maxWidth="@dimen/toast_width"
-    android:background="?android:attr/colorBackground"
+    android:background="@drawable/toast_frame_legacy"
     android:elevation="@dimen/toast_elevation"
     android:layout_marginEnd="16dp"
     android:layout_marginStart="16dp"