Use custom QS fragment for auto use-case.

Use a custom QS fragment if the UI mode is car. This fragment disables
the quick settings row and expansion. Remove the config options that
used to have disabled this in the phone QSFragment.

To accomplish this, introduce a new QSFooter interface. The old
QSFooter.java now implements this.

Test: boot on phone and Android Auto headunit
Bug: 33210494
Change-Id: I5accc2d27d6725380ca5e271d332a03991c9419b
diff --git a/packages/SystemUI/res/layout/car_qs_footer.xml b/packages/SystemUI/res/layout/car_qs_footer.xml
new file mode 100644
index 0000000..2ef3b05
--- /dev/null
+++ b/packages/SystemUI/res/layout/car_qs_footer.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+<!-- extends RelativeLayout -->
+<com.android.systemui.qs.car.CarQSFooter
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/qs_footer"
+    android:layout_width="match_parent"
+    android:layout_height="@dimen/qs_footer_height"
+    android:baselineAligned="false"
+    android:clickable="false"
+    android:clipChildren="false"
+    android:clipToPadding="false"
+    android:paddingBottom="16dp"
+    android:paddingTop="16dp"
+    android:paddingEnd="32dp"
+    android:paddingStart="32dp"
+    android:gravity="center_vertical"
+    android:orientation="horizontal">
+
+    <com.android.systemui.statusbar.phone.MultiUserSwitch
+        android:id="@+id/multi_user_switch"
+        android:layout_alignParentStart="true"
+        android:layout_centerVertical="true"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:background="@drawable/ripple_drawable"
+        android:focusable="true">
+
+        <ImageView
+            android:id="@+id/multi_user_avatar"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_gravity="center"
+            android:scaleType="centerInside"/>
+    </com.android.systemui.statusbar.phone.MultiUserSwitch>
+
+    <com.android.systemui.statusbar.phone.SettingsButton
+        android:id="@+id/settings_button"
+        android:layout_alignParentEnd="true"
+        android:layout_centerVertical="true"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:background="@drawable/ripple_drawable"
+        android:contentDescription="@string/accessibility_quick_settings_settings"
+        android:scaleType="centerCrop"
+        android:src="@drawable/ic_settings_16dp"
+        android:tint="?android:attr/colorForeground"
+        style="@android:style/Widget.Material.Button.Borderless" />
+
+</com.android.systemui.qs.car.CarQSFooter>