Add background blur to tv volume dialog

<shape xmlns:android="http://schemas.android.com/apk/res/android"

    android:shape="rectangle">

  <solid android:color="@color/tv_volume_dialog_background" />

  <corners android:radius="@dimen/tv_volume_dialog_corner_radius"/>

  <solid android:color="@color/volume_dialog_background_color" />

  <corners android:radius="?android:attr/dialogCornerRadius"/>

</shape>

            android:translationZ="@dimen/volume_dialog_elevation"

            android:clipChildren="false"

            android:clipToPadding="false"

            android:background="@drawable/tv_volume_dialog_background">

            android:background="@android:color/transparent">

            <LinearLayout

                android:id="@+id/volume_dialog_rows"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:gravity="center"

                android:orientation="horizontal">

                android:orientation="horizontal"

                android:background="@drawable/tv_volume_dialog_background">

                <!-- volume rows added and removed here! :-) -->

            </LinearLayout>

  <dimen name="volume_dialog_panel_transparent_padding">24dp</dimen>

  <dimen name="volume_dialog_slider_width">4dp</dimen>

  <dimen name="volume_dialog_slider_corner_radius">@dimen/volume_dialog_slider_width</dimen>

  <dimen name="volume_dialog_background_blur_radius">100dp</dimen>

  <dimen name="tv_volume_dialog_bubble_size">36dp</dimen>

  <dimen name="tv_volume_dialog_corner_radius">36dp</dimen>

  <dimen name="tv_volume_dialog_row_padding">6dp</dimen>

  <dimen name="tv_volume_number_text_size">16sp</dimen>

  <dimen name="tv_volume_seek_bar_thumb_diameter">24dp</dimen>

<?xml version="1.0" encoding="utf-8"?>

<!--

/*

 * Copyright 2021, 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.

 */

-->

<resources>

    <color name="volume_dialog_background_color">#E61F232B</color>

    <color name="volume_dialog_background_color_above_blur">#C71F232B</color>

</resources>

    <!-- The duraction of the hide animation for the volume dialog in milliseconds -->

    <integer name="config_dialogHideAnimationDurationMs">400</integer>

    <!-- Whether to use window background blur for the volume dialog. -->

    <bool name="config_volumeDialogUseBackgroundBlur">true</bool>

</resources>