This test fails in the browser_tests step on four trybots:

  AutoScrollExtensionSettingsWebUITest.testAutoScroll

Bot links:

  https://ci.chromium.org/buildbot/tryserver.chromium.linux/linux_chromium_rel_ng/620275
  https://ci.chromium.org/buildbot/tryserver.chromium.mac/mac_chromium_rel_ng/623932
  https://ci.chromium.org/buildbot/tryserver.chromium.win/win10_chromium_x64_rel_ng/58124
  https://ci.chromium.org/buildbot/tryserver.chromium.win/win7_chromium_rel_ng/76819

On linux_chromium_rel_ng, the same test also fails in the network_service_browser_tests and site_per_process_browser_tests steps.

The output includes:

[1:1:0109/123625.053710:FATAL:PaintLayer.h(338)] Check failed: !needs_descendant_dependent_flags_update_.
#0 0x0000053e8bac base::debug::StackTrace::StackTrace()
#1 0x00000540913c logging::LogMessage::~LogMessage()
#2 0x000008edda75 blink::PaintLayer::SubtreeIsInvisible()
#3 0x00000909f746 blink::LocalFrameView::InvalidateViewportConstrainedObjects()
#4 0x0000097a942a blink::PaintLayerScrollableArea::InvalidatePaintForScrollOffsetChange()
#5 0x0000097a86b9 blink::PaintLayerScrollableArea::UpdateScrollOffset()
#6 0x000008a397be blink::ScrollableArea::ScrollOffsetChanged()
#7 0x000008a3d0c0 blink::ProgrammaticScrollAnimator::ScrollToOffsetWithoutAnimation()
#8 0x000008a396ab blink::ScrollableArea::SetScrollOffset()
#9 0x00000907c990 blink::LocalDOMWindow::scrollTo()
#10 0x00000876f416 blink::V8Element::scrollTopAttributeSetterCallback()
#11 0x000004724d82 v8::internal::FunctionCallbackArguments::Call()
#12 0x00000480a8d5 v8::internal::(anonymous namespace)::HandleApiCallHelper<>()
#13 0x00000480912f v8::internal::Builtins::InvokeApiFunction()
#14 0x000004d14748 v8::internal::Object::SetPropertyWithAccessor()
#15 0x000004d2c133 v8::internal::Object::SetPropertyInternal()
#16 0x000004d2be2a v8::internal::Object::SetProperty()
#17 0x000004c300f7 v8::internal::StoreIC::Store()
#18 0x000004c373d0 v8::internal::__RT_impl_Runtime_StoreIC_Miss()
#19 0x3ace18404384 <unknown>