Merge "Make car nav bar center it's children."

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_height="match_parent"

    android:layout_width="match_parent"

    android:gravity="center"

    android:background="@drawable/system_bar_background">

    <!-- phone.NavigationBarView has rot0 and rot90 but we expect the car head unit to have a fixed

    <LinearLayout

        android:layout_height="match_parent"

        android:layout_width="@dimen/car_navigation_bar_width"

        android:layout_gravity="center"

        android:orientation="horizontal"

        android:clipChildren="false"

        android:clipToPadding="false"