core/res/res/layout/notification_material_media_seekbar.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2019 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
  -->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/notification_media_progress"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_alignParentBottom="true"
    >
    <SeekBar android:id="@+id/notification_media_progress_bar"
        style="@style/Widget.ProgressBar.Horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:maxHeight="3dp"
        android:paddingTop="24dp"
        android:paddingBottom="24dp"
        android:clickable="true"
        android:layout_marginBottom="-24dp"
        android:layout_marginTop="-12dp"
        android:splitTrack="false"
    />
    <FrameLayout
        android:id="@+id/notification_media_progress_time"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginBottom="11dp"
        >

        <!-- width is set to "match_parent" to avoid extra layout calls -->
        <TextView android:id="@+id/notification_media_elapsed_time"
            style="@style/Widget.DeviceDefault.Notification.Text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_marginStart="@dimen/notification_content_margin_start"
            android:gravity="start"
        />

        <TextView android:id="@+id/notification_media_total_time"
            style="@style/Widget.DeviceDefault.Notification.Text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginEnd="@dimen/notification_content_margin_end"
            android:gravity="end"
        />
    </FrameLayout>
</LinearLayout>