Update brotli from 722f89 (Feb 19, 2016) to 510131 (Apr 22, 2016)

third_party/brotli/dec/huffman.h

Index: third_party/brotli/dec/huffman.h
diff --git a/third_party/brotli/dec/huffman.h b/third_party/brotli/dec/huffman.h
index 7cbec80d429b7e82d7f91b06c3167e9b6e1ea99f..fc880810c66658d7bbe735208dd045c611709915 100644
--- a/third_party/brotli/dec/huffman.h
+++ b/third_party/brotli/dec/huffman.h
@@ -10,6 +10,7 @@
 #define BROTLI_DEC_HUFFMAN_H_
 
 #include "./types.h"
+#include "./port.h"
 
 #if defined(__cplusplus) || defined(c_plusplus)
 extern "C" {
@@ -36,27 +37,21 @@ typedef struct {
   uint16_t value;  /* symbol value or table offset */
 } HuffmanCode;
 
-
 /* Builds Huffman lookup table assuming code lengths are in symbol order. */
-void BrotliBuildCodeLengthsHuffmanTable(HuffmanCode* root_table,
-                                        const uint8_t* const code_lengths,
-                                        uint16_t* count);
+BROTLI_INTERNAL void BrotliBuildCodeLengthsHuffmanTable(HuffmanCode* root_table,
+    const uint8_t* const code_lengths, uint16_t* count);
 
 /* Builds Huffman lookup table assuming code lengths are in symbol order. */
 /* Returns size of resulting table. */
-uint32_t BrotliBuildHuffmanTable(HuffmanCode* root_table,
-                                 int root_bits,
-                                 const uint16_t* const symbol_lists,
-                                 uint16_t* count_arg);
+BROTLI_INTERNAL uint32_t BrotliBuildHuffmanTable(HuffmanCode* root_table,
+    int root_bits, const uint16_t* const symbol_lists, uint16_t* count_arg);
 
 /* Builds a simple Huffman table. The num_symbols parameter is to be */
 /* interpreted as follows: 0 means 1 symbol, 1 means 2 symbols, 2 means 3 */
 /* symbols, 3 means 4 symbols with lengths 2,2,2,2, 4 means 4 symbols with */
 /* lengths 1,2,3,3. */
-uint32_t BrotliBuildSimpleHuffmanTable(HuffmanCode* table,
-                                       int root_bits,
-                                       uint16_t* symbols,
-                                       uint32_t num_symbols);
+BROTLI_INTERNAL uint32_t BrotliBuildSimpleHuffmanTable(HuffmanCode* table,
+    int root_bits, uint16_t* symbols, uint32_t num_symbols);
 
 /* Contains a collection of Huffman trees with the same alphabet size. */
 typedef struct {