danilchap @ could you please look into this.please feel free to re-assigned back if needed. thanks in advance !

Thank you, it is for me.
there is a too strict DCHECK, will relax it.

The following revision refers to this bug:
  https://chromium.googlesource.com/external/webrtc.git/+/f292e3151155d90ca6dd9d0a1a51b4de67c02572

commit f292e3151155d90ca6dd9d0a1a51b4de67c02572
Author: danilchap <danilchap@webrtc.org>
Date: Thu Sep 22 14:24:30 2016

Relax too strict DCHECKs while parsing rtcp reports

BUG= chromium:649129 

Review-Url: https://codereview.webrtc.org/2361493004
Cr-Commit-Position: refs/heads/master@{#14353}

[modify] https://crrev.com/f292e3151155d90ca6dd9d0a1a51b4de67c02572/webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.cc
[modify] https://crrev.com/f292e3151155d90ca6dd9d0a1a51b4de67c02572/webrtc/modules/rtp_rtcp/source/rtcp_packet/sender_report.cc

ClusterFuzz has detected this issue as fixed in range 422768:422805.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6058217144844288

Fuzzer: libfuzzer_rtcp_receiver_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: UNKNOWN
Crash Address: 0x03e90000589e
Crash State:
  webrtc::rtcp::ReceiverReport::Parse
  webrtc::RTCPReceiver::HandleReceiverReport
  webrtc::RTCPReceiver::ParseCompoundPacket
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=419971:420025
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=422768:422805

Minimized Testcase (0.03 Kb): https://cluster-fuzz.appspot.com/download/AMIfv957Nl9c3limy4y669vPArPuthBAbMiAOjo6UI-aiuDiCzAxzHwmVcBwpaZ3OX9DY6CugoCrSFSQBdDPxHKWh_LgOctz2T6bltcSx-KCJjnaBlzpch1cFaWoSeqPaChJuyqQDTFwrkPwXRTXz8da74hl1EZbhA?testcase_id=6058217144844288

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

Rolled in https://chromium.googlesource.com/chromium/src/+/cb14036453c387f0e0d364224ea15d50f9109aca

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot