TUN-813: Clean up cloudflared dependencies

vendor/github.com/cloudflare/brotli-go/enc/backward_references.h

@@ -0,0 +1,39 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Function to find backward reference copies. */
+
+#ifndef BROTLI_ENC_BACKWARD_REFERENCES_H_
+#define BROTLI_ENC_BACKWARD_REFERENCES_H_
+
+#include "../common/constants.h"
+#include "../common/dictionary.h"
+#include <brotli/types.h>
+#include "./command.h"
+#include "./hash.h"
+#include "./port.h"
+#include "./quality.h"
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+/* "commands" points to the next output command to write to, "*num_commands" is
+   initially the total amount of commands output by previous
+   CreateBackwardReferences calls, and must be incremented by the amount written
+   by this call. */
+BROTLI_INTERNAL void BrotliCreateBackwardReferences(
+    const BrotliDictionary* dictionary, size_t num_bytes, size_t position,
+    const uint8_t* ringbuffer, size_t ringbuffer_mask,
+    const BrotliEncoderParams* params, HasherHandle hasher, int* dist_cache,
+    size_t* last_insert_len, Command* commands, size_t* num_commands,
+    size_t* num_literals);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}  /* extern "C" */
+#endif
+
+#endif  /* BROTLI_ENC_BACKWARD_REFERENCES_H_ */