Mass-format GN recipes

This busybody CL should be trivial. It was generated by issuing

```
git ls-files -- "*.gn" | xargs gn format
```

and passed under `git cl split`. This particular CL is scoped to
recipes under:

third_party/brotli

This CL was uploaded by git cl split.

R=bashi@chromium.org

Change-Id: I7d12689f4ecc4f7560cb7ae5e259e0de9d3a0dab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6600730
Auto-Submit: Kalvin Lee <kdlee@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Kalvin Lee <kdlee@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1466944}
NOKEYCHECK=True
GitOrigin-RevId: bf993ccb16a2ad7124794b606334757046090b57

BUILD.gn

diff --git a/BUILD.gn b/BUILD.gn
index 0e986ea..1ba9afb 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -72,67 +72,67 @@
 ]
 
 enc_sources = [
+  "enc/backward_references.c",
+  "enc/backward_references.h",
   "enc/backward_references_hq.c",
   "enc/backward_references_hq.h",
   "enc/backward_references_inc.h",
-  "enc/backward_references.c",
-  "enc/backward_references.h",
-  "enc/bit_cost_inc.h",
   "enc/bit_cost.c",
   "enc/bit_cost.h",
+  "enc/bit_cost_inc.h",
   "enc/block_encoder_inc.h",
-  "enc/block_splitter_inc.h",
   "enc/block_splitter.c",
   "enc/block_splitter.h",
+  "enc/block_splitter_inc.h",
   "enc/brotli_bit_stream.c",
   "enc/brotli_bit_stream.h",
-  "enc/cluster_inc.h",
   "enc/cluster.c",
   "enc/cluster.h",
+  "enc/cluster_inc.h",
   "enc/command.c",
   "enc/command.h",
   "enc/compound_dictionary.c",
   "enc/compound_dictionary.h",
-  "enc/compress_fragment_two_pass.c",
-  "enc/compress_fragment_two_pass.h",
   "enc/compress_fragment.c",
   "enc/compress_fragment.h",
+  "enc/compress_fragment_two_pass.c",
+  "enc/compress_fragment_two_pass.h",
   "enc/dictionary_hash.c",
   "enc/dictionary_hash.h",
   "enc/encode.c",
   "enc/encoder_dict.c",
   "enc/encoder_dict.h",
-  "enc/entropy_encode_static.h",
   "enc/entropy_encode.c",
   "enc/entropy_encode.h",
+  "enc/entropy_encode_static.h",
   "enc/fast_log.c",
   "enc/fast_log.h",
   "enc/find_match_length.h",
+  "enc/hash.h",
   "enc/hash_composite_inc.h",
   "enc/hash_forgetful_chain_inc.h",
+  "enc/hash_longest_match64_inc.h",
   "enc/hash_longest_match_inc.h",
   "enc/hash_longest_match_quickly_inc.h",
-  "enc/hash_longest_match64_inc.h",
   "enc/hash_rolling_inc.h",
   "enc/hash_to_binary_tree_inc.h",
-  "enc/hash.h",
-  "enc/histogram_inc.h",
   "enc/histogram.c",
   "enc/histogram.h",
+  "enc/histogram_inc.h",
   "enc/literal_cost.c",
   "enc/literal_cost.h",
   "enc/memory.c",
   "enc/memory.h",
-  "enc/metablock_inc.h",
   "enc/metablock.c",
   "enc/metablock.h",
+  "enc/metablock_inc.h",
   "enc/params.h",
   "enc/prefix.h",
   "enc/quality.h",
   "enc/ringbuffer.h",
-  "enc/static_dict_lut.h",
   "enc/static_dict.c",
   "enc/static_dict.h",
+  "enc/static_dict_lut.h",
   "enc/utf8_util.c",
   "enc/utf8_util.h",
   "enc/write_bits.h",