Removed custom FFmpegLock. Removed ffmpeg headers from third_party/ffmpeg/include.

third_party/ffmpeg/include/libavutil/md5.h

-/*
- * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVUTIL_MD5_H
-#define AVUTIL_MD5_H
-
-#include <stdint.h>
-
-extern const int av_md5_size;
-
-struct AVMD5;
-
-void av_md5_init(struct AVMD5 *ctx);
-void av_md5_update(struct AVMD5 *ctx, const uint8_t *src, const int len);
-void av_md5_final(struct AVMD5 *ctx, uint8_t *dst);
-void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len);
-
-#endif /* AVUTIL_MD5_H */
-