packages/SystemUI/res/layout-land/global_actions_grid_seascape.xml

<?xml version="1.0" encoding="utf-8"?>
<com.android.systemui.globalactions.GlobalActionsGridLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@id/global_actions_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:clipToPadding="false"
    android:theme="@style/qs_theme"
    android:gravity="top|left"
    android:clipChildren="false"
>

    <LinearLayout
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        android:gravity="bottom|left"
        android:padding="0dp"
        android:orientation="vertical"
        android:layout_marginLeft="@dimen/global_actions_grid_container_bottom_margin"
    >
        <!-- For separated items-->
        <LinearLayout
            android:id="@+id/separated_button"
            android:layout_gravity="top|left"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/global_actions_grid_side_margin"
            android:layout_marginBottom="@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="horizontal"
            android:layoutDirection="rtl"
            android:background="?android:attr/colorBackgroundFloating"
            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_gravity="bottom|left"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:layout_marginBottom="@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"
            android:background="?android:attr/colorBackgroundFloating"
        >
            <LinearLayout
                android:layout_gravity="bottom"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone"
                android:layoutDirection="rtl"
                android:orientation="horizontal"
            />
            <LinearLayout
                android:layout_gravity="bottom"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone"
                android:layoutDirection="rtl"
                android:orientation="horizontal"
            />
            <LinearLayout
                android:layout_gravity="bottom"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:visibility="gone"
                android:layoutDirection="rtl"
                android:orientation="horizontal"
            />
        </com.android.systemui.globalactions.ListGridLayout>
    </LinearLayout>

</com.android.systemui.globalactions.GlobalActionsGridLayout>