licenses: skip Brotli's binary files

Author: mdebbar

tools/licenses/lib/filesystem.dart

@@ -86,6 +86,17 @@ FileType identifyFile(String name, Reader reader) {
       path.split(name).reversed.take(6).toList().reversed.join('/') == 'third_party/angle/src/common/fuchsia_egl/fuchsia_egl_backend.h') { // has bogus but benign "authors" reference, reported to author and legal team
     return FileType.binary;
   }
+  if (path.split(name).reversed.take(6).toList().reversed.join('/') == 'flutter/third_party/brotli/c/common/dictionary.bin.br') { // Brotli-compressed Brotli dictionary
+    return FileType.binary;
+  }
+  if (path.split(name).reversed.take(8).toList().reversed.join('/') == 'flutter/third_party/brotli/java/org/brotli/integration/fuzz_data.zip' ||
+      path.split(name).reversed.take(8).toList().reversed.join('/') == 'flutter/third_party/brotli/java/org/brotli/integration/test_corpus.zip' ||
+      path.split(name).reversed.take(8).toList().reversed.join('/') == 'flutter/third_party/brotli/java/org/brotli/integration/test_data.zip' ||
+      path.split(name).reversed.take(5).toList().reversed.join('/') == 'flutter/third_party/brotli/js/test_data.tar') {
+    // These are test data files that include a lot of binary files. Since they
+    // are not part of the build, let's skip them.
+    return FileType.notPartOfBuild;
+  }
   final String base = path.basename(name);
   if (base.startsWith('._')) {
     bytes ??= reader();