libs/WindowManager/Shell/res/layout/desktop_mode_app_controls_window_decor.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2022 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.
  -->
<com.android.wm.shell.windowdecor.WindowDecorLinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/desktop_mode_caption"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal"
    android:orientation="horizontal"
    android:background="@drawable/desktop_mode_decor_title">

    <LinearLayout
        android:id="@+id/open_menu_button"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:clickable="true"
        android:focusable="true"
        android:paddingStart="8dp">

        <ImageView
            android:id="@+id/application_icon"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_margin="4dp"
            android:layout_gravity="center_vertical"
            android:contentDescription="@string/app_icon_text" />

        <TextView
            android:id="@+id/application_name"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:minWidth="80dp"
            android:textColor="@color/desktop_mode_caption_app_name_dark"
            android:textSize="14sp"
            android:textFontWeight="500"
            android:gravity="center_vertical"
            android:layout_weight="1"
            android:paddingStart="4dp"
            android:paddingEnd="4dp"
            tools:text="Gmail"/>

        <ImageButton
            android:id="@+id/expand_menu_button"
            android:layout_width="32dp"
            android:layout_height="32dp"
            android:padding="4dp"
            android:contentDescription="@string/expand_menu_text"
            android:src="@drawable/ic_baseline_expand_more_24"
            android:tint="@color/desktop_mode_caption_expand_button_dark"
            android:background="@null"
            android:scaleType="fitCenter"
            android:clickable="false"
            android:focusable="false"
            android:layout_gravity="center_vertical"/>

    </LinearLayout>

    <View
        android:id="@+id/caption_handle"
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:layout_weight="1"/>

    <ImageButton
        android:id="@+id/close_window"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:padding="4dp"
        android:layout_marginEnd="8dp"
        android:contentDescription="@string/close_button_text"
        android:src="@drawable/decor_close_button_dark"
        android:scaleType="fitCenter"
        android:gravity="end"
        android:background="@null"
        android:tint="@color/desktop_mode_caption_close_button_dark"/>
</com.android.wm.shell.windowdecor.WindowDecorLinearLayout>