Merge "Fix errorprone warnings that should be errors"

    private static final String mStatsFile =

            mContext.getExternalFilesDir(null) + "/Muxer." + System.currentTimeMillis() + ".csv";

    private static final String TAG = "MuxerTest";

    private static final Map<String, Integer> mMapFormat = new Hashtable<String, Integer>() {

        {

            put("mp4", MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);

            put("webm", MediaMuxer.OutputFormat.MUXER_OUTPUT_WEBM);

            put("3gpp", MediaMuxer.OutputFormat.MUXER_OUTPUT_3GPP);

            put("ogg", MediaMuxer.OutputFormat.MUXER_OUTPUT_OGG);

        }

    };

    private static final Map<String, Integer> mMapFormat = Map.of(

            "mp4", MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4,

            "webm", MediaMuxer.OutputFormat.MUXER_OUTPUT_WEBM,

            "3gpp", MediaMuxer.OutputFormat.MUXER_OUTPUT_3GPP,

            "ogg", MediaMuxer.OutputFormat.MUXER_OUTPUT_OGG);

    private String mInputFileName;

    private String mFormat;