chrome/android/java/res/layout/keyboard_accessory_action.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 The Chromium Authors. All rights reserved.
     Use of this source code is governed by a BSD-style license that can be
     found in the LICENSE file. -->

<org.chromium.ui.widget.ButtonCompat
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:gravity="center"
    android:layout_height="@dimen/keyboard_accessory_bar_item_height"
    android:layout_width="wrap_content"
    android:paddingEnd="@dimen/keyboard_accessory_suggestion_padding"
    android:paddingStart="@dimen/keyboard_accessory_suggestion_padding"
    android:layout_marginBottom="@dimen/keyboard_accessory_half_padding"
    android:layout_marginTop="@dimen/keyboard_accessory_half_padding"
    android:textAlignment="center"
    style="@style/FilledButton.Flat" />