session-android/res/layout/delivery_status_view.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <FrameLayout android:id="@+id/pending_indicator_stub"
                 android:layout_width="wrap_content"
                 android:paddingRight="2dp"
                 android:layout_height="wrap_content" />

    <ImageView android:id="@+id/sent_indicator"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_gravity="center_vertical|end"
               android:src="@drawable/ic_done_white_18dp"
               android:paddingLeft="2dp"
               android:paddingBottom="2dp"
               android:visibility="gone"
               android:contentDescription="@string/conversation_item_sent__delivered_description" />

    <ImageView android:id="@+id/delivered_indicator"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_gravity="center_vertical|end"
               android:src="@drawable/ic_done_all_white_18dp"
               android:paddingLeft="2dp"
               android:paddingBottom="2dp"
               android:visibility="gone"
               android:contentDescription="@string/conversation_item_sent__delivered_description" />

</merge>