Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of waffles@chromium.org

browser_tests failing on chromium.chromiumos/linux-chromeos-dbg

Builders failed on: 
- linux-chromeos-dbg: 
  https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/linux-chromeos-dbg

BrowserNonClientFrameViewAshTest.ImmersiveModeTopViewInset/material* tests affected.

thread-checker failures like:

[16202:16202:0709/211202.910243:FATAL:single_thread_proxy.cc(237)] Check failed: task_runner_provider_->IsMainThread(). 
#0 0x7f9b36f8672d base::debug::StackTrace::StackTrace()
#1 0x7f9b36c9d3fc base::debug::StackTrace::StackTrace()
#2 0x7f9b36d06dfd logging::LogMessage::~LogMessage()
#3 0x7f9b2b5692e8 cc::SingleThreadProxy::SetNeedsCommit()
#4 0x7f9b2b45ecef cc::LayerTreeHost::SetNeedsCommit()
#5 0x7f9b2b467426 cc::LayerTreeHost::SetMutatorsNeedCommit()
#6 0x7f9b0fd29981 cc::AnimationHost::SetNeedsCommit()
#7 0x7f9b0fd1962d cc::Animation::SetNeedsCommit()
#8 0x7f9b0fd41151 cc::KeyframeEffect::KeyframeModelAdded()
#9 0x7f9b0fd44e6c cc::KeyframeEffect::AddKeyframeModel()
#10 0x7f9b0fd17fbc cc::Animation::AddKeyframeModelForKeyframeEffect()
#11 0x7f9b0fd71a6d cc::SingleKeyframeEffectAnimation::AddKeyframeModel()
#12 0x7f9b28c83a95 ui::LayerAnimator::AddThreadedAnimation()
#13 0x7f9b28c7498e ui::(anonymous namespace)::ThreadedLayerAnimationElement::RequestEffectiveStart()
#14 0x7f9b28c71113 ui::LayerAnimationElement::Start()
#15 0x7f9b28c7cbe3 ui::LayerAnimationSequence::Start()
#16 0x7f9b28c84287 ui::LayerAnimator::StartSequenceImmediately()
#17 0x7f9b28c81251 ui::LayerAnimator::StartAnimation()
#18 0x7f9b28c80eb6 ui::LayerAnimator::SetTransform()
#19 0x7f9b28c6122e ui::Layer::SetTransform()
#20 0x7f9b28ded831 aura::Window::SetTransform()
#21 0x7f9b22b732df ash::ScopedTransformOverviewWindow::SetTransform()
#22 0x7f9b22b73f69 ash::ScopedTransformOverviewWindow::OnCompositingStarted()
#23 0x7f9b28c4d734 ui::Compositor::DidSubmitCompositorFrame()
#24 0x7f9b2b56cd05 cc::SingleThreadProxy::DoComposite()
#25 0x7f9b2b56e835 cc::SingleThreadProxy::ScheduledActionDrawIfPossible()
#26 0x7f9b2b3736fd cc::Scheduler::DrawIfPossible()
#27 0x7f9b2b36dbdc cc::Scheduler::ProcessScheduledActions()
#28 0x7f9b2b36d5fd cc::Scheduler::OnBeginImplFrameDeadline()
#29 0x7f9b2b2878ff _ZN4base8internal13FunctorTraitsIMN2cc28ScrollbarAnimationControllerEFvvEvE6InvokeIS5_RKNS_7WeakPtrIS3_EEJEEEvT_OT0_DpOT1_
#30 0x7f9b2b376eba _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMN2cc9SchedulerEFvvERKNS_7WeakPtrIS5_EEJEEEvOT_OT0_DpOT1_
#31 0x7f9b2b376e50 _ZN4base8internal7InvokerINS0_9BindStateIMN2cc9SchedulerEFvvEJNS_7WeakPtrIS4_EEEEEFvvEE7RunImplIRKS6_RKNSt3__15tupleIJS8_EEEJLm0EEEEvOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#32 0x7f9b2b376d9c _ZN4base8internal7InvokerINS0_9BindStateIMN2cc9SchedulerEFvvEJNS_7WeakPtrIS4_EEEEEFvvEE3RunEPNS0_13BindStateBaseE
#33 0x7f9b2b287d4d _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#34 0x7f9b2b287c75 _ZN4base8internal22CancelableCallbackImplINS_17RepeatingCallbackIFvvEEEE16ForwardRepeatingIJEEEvDpT_
#35 0x7f9b2b2878ff _ZN4base8internal13FunctorTraitsIMN2cc28ScrollbarAnimationControllerEFvvEvE6InvokeIS5_RKNS_7WeakPtrIS3_EEJEEEvT_OT0_DpOT1_
#36 0x7f9b2b287eaa _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMNS0_22CancelableCallbackImplINS_17RepeatingCallbackIFvvEEEEEFvvERKNS_7WeakPtrIS8_EEJEEEvOT_OT0_DpOT1_
#37 0x7f9b2b287e40 _ZN4base8internal7InvokerINS0_9BindStateIMNS0_22CancelableCallbackImplINS_17RepeatingCallbackIFvvEEEEEFvvEJNS_7WeakPtrIS7_EEEEES5_E7RunImplIRKS9_RKNSt3__15tupleIJSB_EEEJLm0EEEEvOT_OT0_NSH_16integer_sequenceImJXspT1_EEEE
#38 0x7f9b2b287d8c _ZN4base8internal7InvokerINS0_9BindStateIMNS0_22CancelableCallbackImplINS_17RepeatingCallbackIFvvEEEEEFvvEJNS_7WeakPtrIS7_EEEEES5_E3RunEPNS0_13BindStateBaseE
#39 0x7f9b36c4eb4e _ZNO4base12OnceCallbackIFvvEE3RunEv
#40 0x7f9b36c9e7ea base::debug::TaskAnnotator::RunTask()
#41 0x7f9b36d2824a base::internal::IncomingTaskQueue::RunTask()
#42 0x7f9b36d3148b base::MessageLoop::RunTask()
#43 0x7f9b36d316d5 base::MessageLoop::DeferOrRunPendingTask()
#44 0x7f9b36d31a3f base::MessageLoop::DoWork()
#45 0x7f9b36fcaf8b base::MessagePumpLibevent::Run()
#46 0x7f9b36d30d7e base::MessageLoop::Run()
#47 0x7f9b36dd8512 base::RunLoop::Run()
#48 0x00000799810e content::RunThisRunLoop()
#49 0x0000079982ca content::RunAllPendingInMessageLoop()
#50 0x00000673ffaf InProcessBrowserTest::PostRunTestOnMainThread()
#51 0x00000790f48d content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#52 0x00000098ad3d _ZN4base8internal13FunctorTraitsIM25RenderViewContextMenuBaseFvvEvE6InvokeIS4_P21RenderViewContextMenuJEEEvT_OT0_DpOT1_
#53 0x00000098ac84 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIM25RenderViewContextMenuBaseFvvEJP21RenderViewContextMenuEEEvOT_DpOT0_
#54 0x0000079114c5 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE7RunImplIRKS6_RKNSt3__15tupleIJS8_EEEJLm0EEEEvOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#55 0x00000791140c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE3RunEPNS0_13BindStateBaseE
#56 0x00000097b3bd _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#57 0x000006898640 ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#58 0x00000689681e ChromeBrowserMainParts::PreMainMessageLoopRun()
#59 0x0000033da17a chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#60 0x7f9b2d4444ec content::BrowserMainLoop::PreMainMessageLoopRun()
#61 0x7f9b2c19c69d _ZN4base8internal13FunctorTraitsIMN7content12ChildProcessEFvvEvE6InvokeIS5_PS3_JEEEvT_OT0_DpOT1_
[527/528] BrowserNonClientFrameViewAshTest.ImmersiveModeTopViewInset/material_refresh (CRASHED)