Add fuzzers for SDP and STUN parsing.

webrtc/test/fuzzers/stun_validator_fuzzer.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/codecs/isac/main/include/audio_decoder_isac.h"
-#include "webrtc/test/fuzzers/audio_decoder_fuzzer.h"
+#include <stddef.h>
+#include <stdint.h>
+
+#include "webrtc/p2p/base/stun.h"
 
 namespace webrtc {
 void FuzzOneInput(const uint8_t* data, size_t size) {
-  AudioDecoderIsac dec(16000);
-  FuzzAudioDecoderIncomingPacket(data, size, &dec);
+  auto message = reinterpret_cast<const char*>(data);

[pbos-webrtc, 2016/06/06 16:20:43]

replace auto with const char* or inline the cast below

[katrielc, 2016/06/06 16:32:21]

Done.

+
+  cricket::StunMessage::ValidateFingerprint(message, size);
+  cricket::StunMessage::ValidateMessageIntegrity(message, size, "");
 }
 }  // namespace webrtc