Update brotli to v1.0.0-snapshot.

third_party/brotli/enc/encode_parallel.h

-/* Copyright 2013 Google Inc. All Rights Reserved.
-
-   Distributed under MIT license.
-   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
-*/
-
-// API for parallel Brotli compression
-// Note that this is only a proof of concept currently and not part of the
-// final API yet.
-
-#ifndef BROTLI_ENC_ENCODE_PARALLEL_H_
-#define BROTLI_ENC_ENCODE_PARALLEL_H_
-
-
-#include "./encode.h"
-#include "./types.h"
-
-namespace brotli {
-
-int BrotliCompressBufferParallel(BrotliParams params,
-                                 size_t input_size,
-                                 const uint8_t* input_buffer,
-                                 size_t* encoded_size,
-                                 uint8_t* encoded_buffer);
-
-}  // namespace brotli
-
-#endif  // BROTLI_ENC_ENCODE_PARALLEL_H_