Update rtcp receiver fuzzer to use generic function

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/modules/rtp_rtcp/source/rtcp_receiver.h"
 #include "webrtc/system_wrappers/include/clock.h"
 
 namespace webrtc {
+namespace {
+
+class NullModuleRtpRtcp : public RTCPReceiver::ModuleRtpRtcp {
+ public:
+  void SetTmmbn(std::vector<rtcp::TmmbItem>) override {}
+  void OnRequestSendReport() override {}
+  void OnReceivedNack(const std::vector<uint16_t>&) override {};
+  void OnReceivedRtcpReportBlocks(const ReportBlockList&) override {};
+};
+
+}
 
 void FuzzOneInput(const uint8_t* data, size_t size) {
-  RTCPUtility::RTCPParserV2 rtcp_parser(data, size, true);
-  if (!rtcp_parser.IsValid())
-    return;
+  NullModuleRtpRtcp rtp_rtcp_module;
+  SimulatedClock clock(1234);
 
-  webrtc::SimulatedClock clock(1234);
   RTCPReceiver receiver(&clock, false, nullptr, nullptr, nullptr, nullptr,
-                        nullptr);
+                        &rtp_rtcp_module);
 
-  RTCPHelp::RTCPPacketInformation rtcp_packet_information;
-  receiver.IncomingRTCPPacket(rtcp_packet_information, &rtcp_parser);
+  receiver.IncomingPacket(data, size);
 }
 }  // namespace webrtc