chromium/components/browser_ui/widget/android/java/res/drawable/modern_toolbar_text_box_background_highlight.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2023 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item
      android:top="@dimen/modern_toolbar_background_vertical_offset"
      android:bottom="@dimen/modern_toolbar_background_vertical_offset">

      <shape android:shape="rectangle"
          android:top="@dimen/modern_toolbar_background_vertical_offset"
          android:bottom="@dimen/modern_toolbar_background_vertical_offset">

        <solid android:color="@color/color_primary_with_alpha_5" />
        <size
            android:width="@dimen/modern_toolbar_background_size"
            android:height="@dimen/modern_toolbar_background_size" />
        <corners android:radius="@dimen/modern_toolbar_background_corner_radius" />
      </shape>
  </item>
</layer-list>