Merge "SoundPool.Builder: document default values" into lmp-dev

        /**

         * Constructs a new Builder with the defaults format values.

         * If not provided, the maximum number of streams is 1 (see {@link #setMaxStreams(int)} to

         * change it), and the audio attributes have a usage value of

         * {@link AudioAttributes#USAGE_MEDIA} (see {@link #setAudioAttributes(AudioAttributes)} to

         * change them).

         */

        public Builder() {

        }