chromium/components/permissions/android/res/color/item_chooser_row_background.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2016 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:color="@macro/default_control_color_active" android:state_activated="true"/>
  <item android:color="@android:color/transparent"/>
</selector>