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

third_party/brotli/dec/state.c

Index: third_party/brotli/dec/state.c
diff --git a/third_party/brotli/dec/state.c b/third_party/brotli/dec/state.c
index 52c0e6c8f8d4542daba2bdd6c1e5045e1f3de31b..183cc9d7994b303efbb68bbd0752a6c0989bd07b 100644
--- a/third_party/brotli/dec/state.c
+++ b/third_party/brotli/dec/state.c
@@ -15,6 +15,10 @@
 extern "C" {
 #endif
 
+/* Declared in decode.h */
+int BrotliStateIsStreamStart(const BrotliState* s);
+int BrotliStateIsStreamEnd(const BrotliState* s);
+
 static void* DefaultAllocFunc(void* opaque, size_t size) {
   BROTLI_UNUSED(opaque);
   return malloc(size);
@@ -76,7 +80,6 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s,
   s->distance_hgroup.codes = NULL;
   s->distance_hgroup.htrees = NULL;
 
-
   s->custom_dict = NULL;
   s->custom_dict_size = 0;