sdk/platforms/android-27/data/res/values-watch/config_material.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2016 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.
-->

<!-- These resources are around just to allow their values to be customized
     for watch products.  Do not translate. -->
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <!-- Watch type devices have limited screen real-estate, and thus action bars should not be
         used. -->
    <bool name="config_windowActionBarSupported">false</bool>

    <!-- Watch type devices have limited screen real-estate, and thus titles should not be used. -->
    <bool name="config_windowNoTitleDefault">true</bool>

    <!-- Use micro alert controller -->
    <integer name="config_alertDialogController">1</integer>

    <!-- Always overscan by default to ensure onApplyWindowInsets will always be called. -->
    <bool name="config_windowOverscanByDefault">true</bool>

    <!-- Enable windowSwipeToDismiss. -->
    <bool name="config_windowSwipeToDismiss">true</bool>

    <!-- Style the scrollbars accoridngly. -->
    <drawable name="config_scrollbarThumbVertical">@drawable/scrollbar_vertical_thumb</drawable>
    <drawable name="config_scrollbarTrackVertical">@drawable/scrollbar_vertical_track</drawable>
</resources>