Fix SDK build Remove links to hidden constant in javadoc.

         * music stream for transient focus losses, and pause otherwise.

         * @param focusChange one of {@link AudioManager#AUDIOFOCUS_GAIN},

         *   {@link AudioManager#AUDIOFOCUS_LOSS}, {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT}

         *   and {@link AudioManager#AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK}.

         */

        public void onAudioFocusChanged(int focusChange);

    }

     *  @param durationHint use {@link #AUDIOFOCUS_GAIN_TRANSIENT} to indicate this focus request

     *      is temporary, and focus will be abandonned shortly. Examples of transient requests are

     *      for the playback of driving directions, or notifications sounds.

     *      Use {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} to indicate also that it's ok for

     *      the previous focus owner to keep playing if it ducks its audio output.

     *      Use {@link #AUDIOFOCUS_GAIN} for a focus request of unknown duration such

     *      as the playback of a song or a video.

     *  @return {@link #AUDIOFOCUS_REQUEST_FAILED} or {@link #AUDIOFOCUS_REQUEST_GRANTED}