Add a fuzzer target for MP4 AVCC record parsing

media/formats/mp4/mp4_avcc_parser_fuzzer.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 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.
 
-// Empty fuzzer that doesn't do anything. Used as test and documentation.
-
 #include <stddef.h>
 #include <stdint.h>
 
-// Fuzzer entry point.
+#include "base/logging.h"
+#include "media/formats/mp4/box_definitions.h"
+
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-  // Run your code on data.
+  media::mp4::AVCDecoderConfigurationRecord().Parse(data, size);
   return 0;
 }
 
-// Environment is optional.
+// For disabling noisy logging.
 struct Environment {
-  Environment() {
-    // Initialize your environment.
-  }
+  Environment() { logging::SetMinLogLevel(logging::LOG_FATAL); }
 };
 
 Environment* env = new Environment();
-
-