change the box's size back to 300dp

Author: trambui09

samples/user-interface/predictiveback/src/main/res/drawable/button.xml

@@ -13,8 +13,8 @@
   ~ 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">
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+
     <solid android:color="#4285F4" />
     <corners android:radius="20dp" />
 </shape>

samples/user-interface/predictiveback/src/main/res/layout/fragment_set_custom_animations_second.xml

@@ -35,8 +35,8 @@
 
     <View
         android:id="@+id/box"
-        android:layout_width="350dp"
-        android:layout_height="350dp"
+        android:layout_width="300dp"
+        android:layout_height="300dp"
         android:background="@drawable/box"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"