[libfuzzer] flatbuffers verifier fuzzer.

testing/libfuzzer/fuzzers/flatbuffers_verifier_fuzzer.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
-#include <string>
-
-#include "base/json/json_reader.h"
-#include "base/values.h"
+#include "third_party/flatbuffers/src/tests/monster_test_generated.h"
 
 // Entry point for LibFuzzer.
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-  base::JSONReader reader;
-  reader.Read(std::string(reinterpret_cast<const char*>(data), size));
+  flatbuffers::Verifier verifier(data, size);
+  MyGame::Example::VerifyMonsterBuffer(verifier);
   return 0;
 }
+