Simple RTCP receiver fuzzer.

webrtc/test/fuzzers/rtcp_receiver_fuzzer.cc

+/*
+ *  Copyright (c) 2015 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/base/checks.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/modules/rtp_rtcp/source/rtcp_receiver.h"
+#include "webrtc/system_wrappers/include/clock.h"
+
+namespace webrtc {
+
+void FuzzOneInput(const uint8_t* data, size_t size) {
+  RTCPUtility::RTCPParserV2 rtcp_parser(data, size, true);
+  if (!rtcp_parser.IsValid())
+    return;
+
+  webrtc::SimulatedClock clock(1234);
+  RTCPReceiver receiver(&clock, false, nullptr, nullptr, nullptr, nullptr,
+                        nullptr);

[danilchap, 2016/02/22 12:48:51]

Last parameter can't be null: Should point to RtpRtcp module.

It is currently used both for parsing and for callbacks.
Either use a mock object, or wait CL https://codereview.webrtc.org/1491843004/
where, as side effect, I remove calling RtpRtcp module during parse step.

+
+  RTCPHelp::RTCPPacketInformation rtcp_packet_information;
+  receiver.IncomingRTCPPacket(rtcp_packet_information, &rtcp_parser);
+}
+}  // namespace webrtc
+