Merge "Update the preview background of the Caption and Style."

    android:clipToPadding="true"

    android:clipChildren="true"

    android:layout_width="match_parent"

    android:layout_height="wrap_content">

    android:layout_height="wrap_content"

    android:paddingStart="?android:attr/listPreferredItemPaddingStart"

    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd">

    <ImageView

        android:layout_width="match_parent"

        android:layout_height="@dimen/captioning_preview_height"

        android:contentDescription="@null"

        android:scaleType="centerCrop"

        android:clipToOutline="true"

        android:background="@drawable/protection_background"

        android:src="@drawable/caption_background"/>

    <FrameLayout