Merge "Enable a ripple on the roots list in DocumentsUI."

    <item android:state_focused="false" android:state_activated="true">

        <color android:color="@color/material_grey_300" />

    </item>

    <item android:drawable="@android:color/transparent" />

</selector>

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingTop="8dp"

    android:drawSelectorOnTop="true"

    android:divider="@null" />