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

third_party/brotli/dec/decode.h

Index: third_party/brotli/dec/decode.h
diff --git a/third_party/brotli/dec/decode.h b/third_party/brotli/dec/decode.h
index 074b2f58b57090f901aaf846a9eb45e8b4387a94..7ac771e31fb153bdb1fa413d51ab47f6fd253562 100644
--- a/third_party/brotli/dec/decode.h
+++ b/third_party/brotli/dec/decode.h
@@ -9,13 +9,14 @@
 #ifndef BROTLI_DEC_DECODE_H_
 #define BROTLI_DEC_DECODE_H_
 
-#include "./state.h"
 #include "./types.h"
 
 #if defined(__cplusplus) || defined(c_plusplus)
 extern "C" {
 #endif
 
+typedef struct BrotliStateStruct BrotliState;
+
 typedef enum {
   /* Decoding error, e.g. corrupt input or memory allocation problem */
   BROTLI_RESULT_ERROR = 0,
@@ -80,14 +81,21 @@ BrotliResult BrotliDecompressStream(size_t* available_in,
    Not to be confused with the built-in transformable dictionary of Brotli.
    The dictionary must exist in memory until decoding is done and is owned by
    the caller. To use:
-    1) initialize state with BrotliStateInit
-    2) use BrotliSetCustomDictionary
-    3) use BrotliDecompressStream
-    4) clean up with BrotliStateCleanup
+    1) Allocate and initialize state with BrotliCreateState
+    2) Use BrotliSetCustomDictionary
+    3) Use BrotliDecompressStream
+    4) Clean up and free state with BrotliDestroyState
 */
 void BrotliSetCustomDictionary(
     size_t size, const uint8_t* dict, BrotliState* s);
 
+/* Returns 1, if s is in a state where we have not read any input bytes yet,
+   and 0 otherwise */
+int BrotliStateIsStreamStart(const BrotliState* s);
+
+/* Returns 1, if s is in a state where we reached the end of the input and
+   produced all of the output, and 0 otherwise. */
+int BrotliStateIsStreamEnd(const BrotliState* s);
 
 #if defined(__cplusplus) || defined(c_plusplus)
 } /* extern "C" */