Merge "Add meta-data constant for activity->slice"

            HINT_NO_TINT, HINT_PARTIAL})

    public @interface SliceHint{ }

    /**

     * The meta-data key that allows an activity to easily be linked directly to a slice.

     * <p>

     * An activity can be statically linked to a slice uri by including a meta-data item

     * for this key that contains a valid slice uri for the same application declaring

     * the activity.

     * @hide

     */

    public static final String SLICE_METADATA_KEY = "android.metadata.SLICE_URI";

    /**

     * Hint that this content is a title of other content in the slice. This can also indicate that

     * the content should be used in the shortcut representation of the slice (icon, label, action),