First failure seen on Feb 15. Assigning to solenberg@ who made multiple changes to third_party/webrtc/voice_engine/ around that time.

[ RUN      ] WebRtcMediaRecorderTest.PeerConnection/4
...
[23751:23778:0220/221427.278362:28301336531:WARNING:audio_sync_reader.cc(188)] AudioSyncReader::Read timed out, audio glitch count=6
...
[23751:23751:0220/221452.649019:28326707188:INFO:CONSOLE(27)] "Still waiting for satisfaction of function () {
              return videoSize > 0 && timeStamps.length > 100;
            }", source: http://127.0.0.1:41676/media/mediarecorder_test_utils.js (27)
[23751:23751:0220/221452.653136:28326711295:INFO:CONSOLE(27)] "Still waiting for satisfaction of function () {
              return videoSize > 0 && timeStamps.length > 100;
            }", source: http://127.0.0.1:41676/media/mediarecorder_test_utils.js (27)
[23751:23751:0220/221452.663708:28326721872:INFO:CONSOLE(27)] "Still waiting for satisfaction of function () {
              return videoSize > 0 && timeStamps.length > 100;
            }", source: http://127.0.0.1:41676/media/mediarecorder_test_utils.js (27)
[23751:23751:0220/221452.664984:28326723145:INFO:CONSOLE(27)] "Still waiting for satisfaction of function () {
              return videoSize > 0 && timeStamps.length > 100;
            }", source: http://127.0.0.1:41676/media/mediarecorder_test_utils.js (27)
[23751:23778:0220/221453.018323:28327076500:WARNING:audio_sync_reader.cc(188)] AudioSyncReader::Read timed out, audio glitch count=97
...
[23796:23907:0220/221503.195395:28337255529:ERROR:acm_receiver.cc(51)] AcmReceiver::SetExtraDelay 783


#
# Fatal error in ../../third_party/webrtc/voice_engine/channel_proxy.cc, line 289
# last system error: 0
# Check failed: 0 == error (0 vs. -1)
#
#
Received signal 6
#0 0x0000004d1486 __interceptor_backtrace
#1 0x0000030ef69a base::debug::StackTrace::StackTrace()
#2 0x0000030edc3f base::debug::StackTrace::StackTrace()
#3 0x0000030ef0cc base::debug::(anonymous namespace)::StackDumpSignalHandler()
#4 0x0000004be9d3 __tsan::CallUserSignalHandler()
#5 0x0000004bee77 rtl_sigaction()
#6 0x7faf5e781330 <unknown>
#7 0x7faf5df93c37 gsignal
#8 0x7faf5df97028 abort
#9 0x0000004bd954 abort
#10 0x00000459bcb4 rtc::FatalMessage::~FatalMessage()
#11 0x000008447588 webrtc::voe::ChannelProxy::SetMinimumPlayoutDelay()
#12 0x0000083237d1 webrtc::internal::AudioReceiveStream::SetMinimumPlayoutDelay()
#13 0x000008323865 webrtc::internal::AudioReceiveStream::SetMinimumPlayoutDelay()
#14 0x0000084d4e76 webrtc::RtpStreamsSynchronizer::Process()
#15 0x00000832e22d webrtc::ProcessThreadImpl::Process()
#16 0x00000832d74a webrtc::ProcessThreadImpl::Run()
#17 0x00000459c3e9 rtc::PlatformThread::StartThread()
#18 0x0000004b8700 __tsan_thread_start_func
#19 0x7faf5e779184 start_thread
#20 0x7faf5e05737d clone
  r8: 00007faf22ba8700  r9: 00007faf5a0a55d0 r10: 0000000000000008 r11: 0000000000000202
 r12: 00007faf22b67340 r13: 00007faf22b672e0 r14: 00007faf22b67340 r15: 00007faf651bfdf0
  di: 0000000000005cf4  si: 0000000000005d63  bp: 00007faf22b67320  bx: 0000000022b683c0
  dx: 0000000000000006  ax: 0000000000000000  cx: ffffffffffffffff  sp: 00007faf22b67178
  ip: 00007faf5df93c37 efl: 0000000000000202 cgf: 0000000000000033 erf: 0000000000000000
 trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
Calling _exit(1). Core file will not be generated.
ThreadSanitizer: Matched 249 suppressions (pid=23796):
249 race:third_party/libvpx/source/libvpx/vp8/encoder/*
[23751:23778:0220/221504.843976:28338902134:WARNING:audio_sync_reader.cc(188)] AudioSyncReader::Read timed out, audio glitch count=2
[23751:23778:0220/221504.888850:28338947020:WARNING:audio_sync_reader.cc(188)] AudioSyncReader::Read timed out, audio glitch count=3
[23751:23778:0220/221504.931968:28338990133:WARNING:audio_sync_reader.cc(188)] AudioSyncReader::Read timed out, audio glitch count=4
[23751:23751:0220/221504.959306:28339017471:ERROR:browser_test_utils.cc(148)] Cannot communicate with DOMMessageQueue.
../../content/browser/webrtc/webrtc_content_browsertest_base.cc:66: Failure
Value of: ExecuteScriptAndExtractString(shell(), javascript, &result)
  Actual: false
Expected: true
Failed to execute javascript testRecordRemotePeerConnection("video/webm;codecs=VP8");.
From javascript: (nothing)
When executing 'testRecordRemotePeerConnection("video/webm;codecs=VP8");'
../../content/browser/webrtc/webrtc_content_browsertest_base.cc:90: Failure
Failed
[  FAILED  ] WebRtcMediaRecorderTest.PeerConnection/4, where GetParam() = 32-byte object <00-E6 C6-09 00-00 00-00 2A-76 69-64 65-6F 2F-77 65-62 6D-3B 63-6F 64-65 63-73 3D-56 50-38 00-00> (55740 ms)

 Issue 693751  has been merged into this issue.

 Issue 693836  has been merged into this issue.

 Issue 693835  has been merged into this issue.

 Issue 693964  has been merged into this issue.

Detected 3 new flakes for test/step "WebRtcMediaRecorderTest.PeerConnection/3". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyMwsSBUZsYWtlIihXZWJSdGNNZWRpYVJlY29yZGVyVGVzdC5QZWVyQ29ubmVjdGlvbi8zDA. This message was posted automatically by the chromium-try-flakes app.

 Issue 694780  has been merged into this issue.

All the failures are on linux_chromium_tsan_rel_ng. I'll disable the test on Linux TSan.

CL to disable the test: https://codereview.chromium.org/2716463004/

Taking this bug out of the sheriff queue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c1b23bc6063b682fb4145460711ed38de8ed890e

commit c1b23bc6063b682fb4145460711ed38de8ed890e
Author: treib <treib@chromium.org>
Date: Thu Feb 23 13:17:45 2017

Disable WebRtcMediaRecorderTest.PeerConnection on Linux TSan (flaky)

TBR=solenberg@chromium.org

BUG= 694373 

Review-Url: https://codereview.chromium.org/2716463004
Cr-Commit-Position: refs/heads/master@{#452475}

[modify] https://crrev.com/c1b23bc6063b682fb4145460711ed38de8ed890e/content/browser/webrtc/webrtc_media_recorder_browsertest.cc

A fix for this breakage has landed in Chromium with this WebRTC roll: https://codereview.chromium.org/2712833003/

...which landed juuust before the CL that disables the test :D

Feel free to just revert that! And sorry for the trouble.

No worries; created a revert!

An lgtm on the revert would be great: https://codereview.chromium.org/2705113007/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b7e1925f5dc51dcd72c91edf8be38006a6e051a3

commit b7e1925f5dc51dcd72c91edf8be38006a6e051a3
Author: solenberg <solenberg@chromium.org>
Date: Thu Feb 23 20:38:33 2017

Revert of Disable WebRtcMediaRecorderTest.PeerConnection on Linux TSan (flaky) (patchset #1 id:1 of https://codereview.chromium.org/2716463004/ )

Reason for revert:
A fix CL for this breakage should be in this WebRTC roll:
https://codereview.chromium.org/2712833003/

Original issue's description:
> Disable WebRtcMediaRecorderTest.PeerConnection on Linux TSan (flaky)
>
> TBR=solenberg@chromium.org
>
> BUG= 694373 
>
> Review-Url: https://codereview.chromium.org/2716463004
> Cr-Commit-Position: refs/heads/master@{#452475}
> Committed: https://chromium.googlesource.com/chromium/src/+/c1b23bc6063b682fb4145460711ed38de8ed890e

TBR=treib@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 694373 

Review-Url: https://codereview.chromium.org/2705113007
Cr-Commit-Position: refs/heads/master@{#452610}

[modify] https://crrev.com/b7e1925f5dc51dcd72c91edf8be38006a6e051a3/content/browser/webrtc/webrtc_media_recorder_browsertest.cc