packages/SystemUI/res/layout-xlarge/sysbar_panel_recent.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/* apps/common/assets/default/default/skins/StatusBar.xml
**
** Copyright 2010, 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.systemui.statusbar.tablet.RecentAppsPanel
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:background="@drawable/sysbar_panel_recents_bg"
    android:orientation="vertical">

    <TextView android:id="@+id/recents_no_recents"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/recent_tasks_empty"
        android:gravity="center_horizontal|center_vertical"
        android:visibility="gone">
    </TextView>

    <HorizontalScrollView android:id="@+id/scroll_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <LinearLayout android:id="@+id/recents_container"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="right"
            android:orientation="horizontal"
        />

    </HorizontalScrollView>

</com.android.systemui.statusbar.tablet.RecentAppsPanel>