Added brotli enc/ and tools/ directories.

third_party/brotli/enc/dictionary.cc

Index: third_party/brotli/enc/dictionary.cc
diff --git a/third_party/brotli/dec/dictionary.c b/third_party/brotli/enc/dictionary.cc
similarity index 99%
copy from third_party/brotli/dec/dictionary.c
copy to third_party/brotli/enc/dictionary.cc
index f8f58575c0eec126823bec7358a730af52ca320d..0564bab6aba3767516dece3bc7739c52976ddadb 100644
--- a/third_party/brotli/dec/dictionary.c
+++ b/third_party/brotli/enc/dictionary.cc
@@ -10,9 +10,9 @@
 extern "C" {
 #endif
 
-/* In case of multiple definition linker error with dictionary.cc from the
-  encoder: include only one of enc/dictionary.cc or dec/dictionary.c in a
-  target using both enc and dec. */
+// In case of multiple definition linker error with dictionary.c from the
+// decoder: include only one of enc/dictionary.cc or dec/dictionary.c in a
+// target using both enc and dec.
 const uint8_t kBrotliDictionary[122784] = {
   0x74, 0x69, 0x6d, 0x65, 0x64, 0x6f, 0x77, 0x6e, 0x6c, 0x69, 0x66, 0x65, 0x6c,
   0x65, 0x66, 0x74, 0x62, 0x61, 0x63, 0x6b, 0x63, 0x6f, 0x64, 0x65, 0x64, 0x61,
@@ -9462,5 +9462,5 @@ const uint8_t kBrotliDictionary[122784] = {
 };
 
 #if defined(__cplusplus) || defined(c_plusplus)
-}  /* extern "C" */
+}    /* extern "C" */
 #endif