packages/SystemUI/res/layout/global_actions_grid.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/global_actions_grid_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clipChildren="false"
    android:clipToPadding="false"
    android:layout_marginBottom="@dimen/global_actions_grid_container_negative_shadow_offset"
>

    <FrameLayout
        android:id="@+id/global_actions_panel_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@id/global_actions_view"
    />

    <com.android.systemui.globalactions.GlobalActionsGridLayout
        android:id="@id/global_actions_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:theme="@style/qs_theme"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:gravity="bottom | center_horizontal"
        android:clipChildren="false"
        android:clipToPadding="false"
        android:paddingBottom="@dimen/global_actions_grid_container_shadow_offset"
        android:layout_marginBottom="@dimen/global_actions_grid_container_negative_shadow_offset"
    >
        <LinearLayout
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:layoutDirection="ltr"
            android:clipChildren="false"
            android:clipToPadding="false"
            android:layout_marginBottom="@dimen/global_actions_grid_container_bottom_margin"
        >
            <!-- For separated items-->
            <LinearLayout
                android:id="@+id/separated_button"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_marginLeft="@dimen/global_actions_grid_side_margin"
                android:layout_marginRight="@dimen/global_actions_grid_side_margin"
                android:paddingLeft="@dimen/global_actions_grid_horizontal_padding"
                android:paddingRight="@dimen/global_actions_grid_horizontal_padding"
                android:paddingTop="@dimen/global_actions_grid_vertical_padding"
                android:paddingBottom="@dimen/global_actions_grid_vertical_padding"
                android:orientation="vertical"
                android:gravity="center"
                android:translationZ="@dimen/global_actions_translate"
            />
            <!-- Grid of action items -->
            <com.android.systemui.globalactions.ListGridLayout
                android:id="@android:id/list"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:gravity="right"
                android:layout_marginRight="@dimen/global_actions_grid_side_margin"
                android:translationZ="@dimen/global_actions_translate"
                android:paddingLeft="@dimen/global_actions_grid_horizontal_padding"
                android:paddingRight="@dimen/global_actions_grid_horizontal_padding"
                android:paddingTop="@dimen/global_actions_grid_vertical_padding"
                android:paddingBottom="@dimen/global_actions_grid_vertical_padding"
            >
                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:visibility="gone"
                    android:layoutDirection="locale"
                />
                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:visibility="gone"
                    android:layoutDirection="locale"
                />
                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:visibility="gone"
                    android:layoutDirection="locale"
                />
            </com.android.systemui.globalactions.ListGridLayout>
        </LinearLayout>

    </com.android.systemui.globalactions.GlobalActionsGridLayout>
</androidx.constraintlayout.widget.ConstraintLayout>