Merge "Expands javadocs for Intent.FLAG_ACTIVITY_MATCH_EXTERNAL" into pi-dev

    /**

     * If set, resolution of this intent may take place via an instant app not

     * yet on the device if there does not yet exist an app on device to

     * resolve it.

     * If set in an Intent passed to {@link Context#startActivity Context.startActivity()},

     * this flag will attempt to launch an instant app if no full app on the device can already

     * handle the intent.

     * <p>

     * When attempting to resolve instant apps externally, the following {@link Intent} properties

     * are supported:

     * <ul>

     *     <li>{@link Intent#setAction(String)}</li>

     *     <li>{@link Intent#addCategory(String)}</li>

     *     <li>{@link Intent#setData(Uri)}</li>

     *     <li>{@link Intent#setType(String)}</li>

     *     <li>{@link Intent#setPackage(String)}</li>

     *     <li>{@link Intent#addFlags(int)}</li>

     * </ul>

     * <p>

     * In the case that no instant app can be found, the installer will be launched to notify the

     * user that the intent could not be resolved. On devices that do not support instant apps,

     * the flag will be ignored.

     */

    public static final int FLAG_ACTIVITY_MATCH_EXTERNAL = 0x00000800;