Update Brotli to revision ec03509

This brings in the output streaming decode support.

BUG=472009

Review URL: https://codereview.chromium.org/1061993007

Cr-Commit-Position: refs/heads/master@{#326762}

third_party/brotli/README.chromium

 Name: Brotli
 URL: https://github.com/google/brotli
-Version: 9e53d522a34bb8eabfda4a50f7e9da1d1e57a98f
+Version: ec03509d6d5d18a57afe1254e713b6787ef1c516
 License: Apache 2.0
 License File: LICENSE
 Security Critical: yes

third_party/brotli/dec/Makefile

@@ -2,7 +2,7 @@
 
 include ../shared.mk
 
-CPPFLAGS += -Wall
+CFLAGS += -Wall
 
 OBJS = bit_reader.o decode.o huffman.o safe_malloc.o state.o streams.o
 

third_party/brotli/dec/decode.h

@@ -32,7 +32,9 @@ typedef enum {
   /* Successfully completely done */
   BROTLI_RESULT_SUCCESS = 1,
   /* Partially done, but must be called again with more input */
-  BROTLI_RESULT_PARTIAL = 2
+  BROTLI_RESULT_NEEDS_MORE_INPUT = 2,
+  /* Partially done, but must be called again with more output */
+  BROTLI_RESULT_NEEDS_MORE_OUTPUT = 3
 } BrotliResult;
 
 /* Sets *decoded_size to the decompressed size of the given encoded stream. */

third_party/brotli/dec/state.h

@@ -39,7 +39,12 @@ typedef enum {
   BROTLI_STATE_BLOCK_DISTANCE = 15,
   BROTLI_STATE_BLOCK_POST = 16,
   BROTLI_STATE_UNCOMPRESSED = 17,
+  BROTLI_STATE_METADATA = 18,
+  BROTLI_STATE_BLOCK_INNER_WRITE = 19,
   BROTLI_STATE_METABLOCK_DONE = 20,
+  BROTLI_STATE_BLOCK_POST_WRITE_1 = 21,
+  BROTLI_STATE_BLOCK_POST_WRITE_2 = 22,
+  BROTLI_STATE_BLOCK_POST_CONTINUE = 23,
   BROTLI_STATE_HUFFMAN_CODE_0 = 30,
   BROTLI_STATE_HUFFMAN_CODE_1 = 31,
   BROTLI_STATE_HUFFMAN_CODE_2 = 32,
@@ -51,6 +56,9 @@ typedef enum {
   BROTLI_STATE_SUB_UNCOMPRESSED_FILL = 52,
   BROTLI_STATE_SUB_UNCOMPRESSED_COPY = 53,
   BROTLI_STATE_SUB_UNCOMPRESSED_WARMUP = 54,
+  BROTLI_STATE_SUB_UNCOMPRESSED_WRITE_1 = 55,
+  BROTLI_STATE_SUB_UNCOMPRESSED_WRITE_2 = 56,
+  BROTLI_STATE_SUB_UNCOMPRESSED_WRITE_3 = 57,
   BROTLI_STATE_SUB_HUFFMAN_LENGTH_BEGIN = 60,
   BROTLI_STATE_SUB_HUFFMAN_LENGTH_SYMBOLS = 61,
   BROTLI_STATE_SUB_HUFFMAN_DONE = 62,
@@ -91,6 +99,7 @@ typedef struct {
   int trivial_literal_context;
 
   int meta_block_remaining_len;
+  int is_metadata;
   int is_uncompressed;
   int block_length[3];
   int block_type[3];
@@ -131,6 +140,9 @@ typedef struct {
   /* For CopyUncompressedBlockToOutput */
   int nbytes;
 
+  /* For partial write operations */
+  int partially_written;
+
   /* For HuffmanTreeGroupDecode */
   int htrees_decoded;
 

third_party/brotli/dec/streams.c

@@ -51,8 +51,9 @@ BrotliInput BrotliInitMemInput(const uint8_t* buffer, size_t length,
 
 int BrotliMemOutputFunction(void* data, const uint8_t* buf, size_t count) {
   BrotliMemOutput* output = (BrotliMemOutput*)data;
-  if (output->pos + count > output->length) {
-    return -1;
+  size_t limit = output->length - output->pos;
+  if (count > limit) {
+    count = limit;
   }
   memcpy(output->buffer + output->pos, buf, count);
   output->pos += count;