On tip of trunk (66.0.3354.0):

1. Sign into a Google account
2. Start a hangout at hangouts.google.com 
3. On the Hangouts page, click the 3-dot menu => Share screen => Share
4. Click "Stop sharing" on the popup at the bottom of the screen
5. In chrome://discards, discard the Hangouts call tab

[112567:112576:0227/211659.688443:FATAL:webrtc_logging_handler_host.cc(56)] Check failed: WebRtcTextLogHandler::CLOSED == text_log_handler_->GetState() (0 vs. 5)
#0 0x7f552fce749c base::debug::StackTrace::StackTrace()
#1 0x7f552fd1130c logging::LogMessage::~LogMessage()
#2 0x557b5f6494c4 WebRtcLoggingHandlerHost::~WebRtcLoggingHandlerHost()
#3 0x557b5f64955e WebRtcLoggingHandlerHost::~WebRtcLoggingHandlerHost()
#4 0x7f552fce7dba base::debug::TaskAnnotator::RunTask()
#5 0x7f552fd1bdd6 base::internal::IncomingTaskQueue::RunTask()
#6 0x7f552fd20007 base::MessageLoop::RunTask()
#7 0x7f552fd2042a base::MessageLoop::DeferOrRunPendingTask()
#8 0x7f552fd206be base::MessageLoop::DoWork()
#9 0x7f552fd23369 base::MessagePumpLibevent::Run()
#10 0x7f552fd1f87c base::MessageLoop::Run()
#11 0x7f552fd580f6 base::RunLoop::Run()
#12 0x7f552fd9902a base::Thread::Run()
#13 0x7f552d22f7e8 content::BrowserThreadImpl::IOThreadRun()
#14 0x7f552d22f961 content::BrowserThreadImpl::Run()
#15 0x7f552fd99623 base::Thread::ThreadMain()
#16 0x7f552fd9517f base::(anonymous namespace)::ThreadFunc()
#17 0x7f552fe33494 start_thread
#18 0x7f552392aa8f clone