Chrome Version: 73.0.3661.0 (Official Build) unknown (64-bit)
OS: 11361.0.0 (Official Build) dev-channel nautilus test

What steps will reproduce the problem?
Follow the steps in Issue 839160, and when you do step 4, tap as fast as you can, in the sense that your fingertip makes contact with the screen for a very short time. It is easy to do on the emulator, with the tap represented by a click where the mouse button is depressed for a very short time.

What is the expected result?
It should just be a way to reproduce Issue 839160.

What happens instead?
[191084:191084:0107/113832.079740:FATAL:event_queue.cc(113)] Check failed: !in_flight_event_. 
#0 0x7f63faa90f6d base::debug::StackTrace::StackTrace()
#1 0x7f63fa78d85a base::debug::StackTrace::StackTrace()
#2 0x7f63fa7f805e logging::LogMessage::~LogMessage()
#3 0x7f63c19fc12a ws::EventQueue::OnWillSendEventToClient()
#4 0x7f63c1a42a47 ws::WindowTree::SendEventToClient()
#5 0x7f63c1a045ed ws::(anonymous namespace)::ProxyWindowEventHandler::OnEvent()
#6 0x7f63ef371d1a ui::EventDispatcher::DispatchEvent()
#7 0x7f63ef371c71 ui::EventDispatcher::DispatchEventToEventHandlers()
#8 0x7f63ef36fb73 ui::EventDispatcher::ProcessEvent()
#9 0x7f63ef36f6e7 ui::EventDispatcherDelegate::DispatchEventToTarget()
#10 0x7f63ef36f53e ui::EventDispatcherDelegate::DispatchEvent()
#11 0x7f63ef3733f5 ui::EventProcessor::OnEventFromSource()
#12 0x7f63ef37372c ui::EventProcessor::OnEventFromSource()
#13 0x7f63e17d811b ash::BackButton::GenerateAndSendBackEvent()
#14 0x7f63e17d8253 ash::BackButton::OnMouseReleased()
#15 0x7f63e4d4d07c views::View::ProcessMouseReleased()
#16 0x7f63e4d4cb65 views::View::OnMouseEvent()
#17 0x7f63ef3723c5 ui::EventHandler::OnEvent()
#18 0x7f63ef391bac ui::ScopedTargetHandler::OnEvent()
#19 0x7f63ef371d1a ui::EventDispatcher::DispatchEvent()
#20 0x7f63ef36fcb3 ui::EventDispatcher::ProcessEvent()
#21 0x7f63ef36f6e7 ui::EventDispatcherDelegate::DispatchEventToTarget()
#22 0x7f63ef36f53e ui::EventDispatcherDelegate::DispatchEvent()
#23 0x7f63e4d63c98 views::internal::RootView::OnMouseReleased()
#24 0x7f63e4d6cacf views::Widget::OnMouseEvent()
#25 0x7f63e182e587 ash::ShelfWidget::OnMouseEvent()
#26 0x7f63e4dbb748 views::NativeWidgetAura::OnMouseEvent()
#27 0x7f63ef3723c5 ui::EventHandler::OnEvent()
#28 0x7f63ef371d1a ui::EventDispatcher::DispatchEvent()
#29 0x7f63ef36fcb3 ui::EventDispatcher::ProcessEvent()
#30 0x7f63ef36f6e7 ui::EventDispatcherDelegate::DispatchEventToTarget()
#31 0x7f63ef36f53e ui::EventDispatcherDelegate::DispatchEvent()
#32 0x7f63ef3733f5 ui::EventProcessor::OnEventFromSource()
#33 0x7f63ef37372c ui::EventProcessor::OnEventFromSource()
#34 0x7f63c19faeef ws::EventQueue::DeliverOrQueueEvent()
#35 0x7f63e16709a8 ash::AshWindowTreeHostPlatform::DeliverEventToSink()
#36 0x7f63e1670a4c ash::AshWindowTreeHostPlatform::DeliverEventToSink()
#37 0x7f63ef3742f6 ui::EventSource::SendEventToSinkFromRewriter()
#38 0x7f63ef375931 ui::EventSource::SendEventToSink()
#39 0x7f63ebc907ed aura::WindowTreeHostPlatform::DispatchEvent()
#40 0x7f63e1670881 ash::AshWindowTreeHostPlatform::DispatchEvent()
#41 0x7f63df30e380 _ZN4base8internal13FunctorTraitsIMN2ui22PlatformWindowDelegateEFvPNS2_5EventEEvE6InvokeIS7_PS3_JS5_EEEvT_OT0_DpOT1_
#42 0x7f63df30e2af _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIMN2ui22PlatformWindowDelegateEFvPNS4_5EventEEJPS5_S7_EEEvOT_DpOT0_
#43 0x7f63df30e245 _ZN4base8internal7InvokerINS0_9BindStateIMN2ui22PlatformWindowDelegateEFvPNS3_5EventEEJNS0_17UnretainedWrapperIS4_EEEEEFvS6_EE7RunImplIS8_NSt4__Cr5tupleIJSA_EEEJLm0EEEEvOT_OT0_NSF_16integer_sequenceImJXspT1_EEEEOS6_
#44 0x7f63df30e179 _ZN4base8internal7InvokerINS0_9BindStateIMN2ui22PlatformWindowDelegateEFvPNS3_5EventEEJNS0_17UnretainedWrapperIS4_EEEEEFvS6_EE7RunOnceEPNS0_13BindStateBaseES6_
#45 0x7f63ef39b361 _ZNO4base12OnceCallbackIFvPN2ui5EventEEE3RunES3_
#46 0x7f63ef392a1d ui::DispatchEventFromNativeUiEvent()
#47 0x7f63df3d345c ui::X11WindowOzone::DispatchEvent()
#48 0x7f63f894b647 ui::PlatformEventSource::DispatchEvent()
#49 0x7f63bed6b659 ui::X11EventSourceLibevent::DispatchPlatformEvent()
#50 0x7f63bed6a05a ui::X11EventSourceLibevent::ProcessXEvent()
#51 0x7f63bed674c5 ui::X11EventSource::ExtractCookieDataDispatchEvent()
#52 0x7f63bed6744e ui::X11EventSource::DispatchXEvents()
#53 0x7f63bed6b8bf ui::X11EventSourceLibevent::OnFileCanReadWithoutBlocking()
#54 0x7f63faae38be base::MessagePumpLibevent::FdWatchController::OnFileCanReadWithoutBlocking()
#55 0x7f63faae4efd base::MessagePumpLibevent::OnLibeventNotification()
#56 0x7f63fab3575e event_process_active
#57 0x7f63fab34da7 event_base_loop
#58 0x7f63faae5339 base::MessagePumpLibevent::Run()
#59 0x7f63fa81d0b6 base::MessageLoopImpl::Run()
#60 0x7f63fa8c3692 base::RunLoop::Run()
#61 0x55c5f038ff50 ChromeBrowserMainParts::MainMessageLoopRun()
#62 0x7f63f2bdb943 content::BrowserMainLoop::RunMainMessageLoopParts()
#63 0x7f63f2be1cd0 content::BrowserMainRunnerImpl::Run()
#64 0x7f63f2b8d77e content::BrowserMain()
#65 0x7f63f4ed0a30 content::RunBrowserProcessMain()
#66 0x7f63f4ed3ea5 content::ContentMainRunnerImpl::RunServiceManager()
#67 0x7f63f4ed2a6c content::ContentMainRunnerImpl::Run()
#68 0x7f63f4ec97cc content::ContentServiceManagerMainDelegate::RunEmbedderProcess()
#69 0x7f63c4bf0a04 service_manager::Main()
#70 0x7f63f4ece115 content::ContentMain()
#71 0x55c5ebf8e466 ChromeMain
#72 0x55c5ebf8e372 main
#73 0x7f63c66f52b1 __libc_start_main
#74 0x55c5ebf8e24a _start



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