Hit this on ToT chrome (r504782). Running chromeos chrome with --login-manager. Renderer for gaia <webview> crashed because of the DCHECK.

[1:1:0927/161544.466158:FATAL:FindPropertiesNeedingUpdate.h(170)] Check failed: *original_properties_->Effect() == *object_properties->Effect(). Property was updated without the l
ayout object ("LayoutSVGContainer g id='YGlOvc' class='yhFy6d sOEOU'") needing a paint property update.
Original:
{"parent":"0x241fa20dbf30","localTransformSpace":"0x241fa20b2790","outputClip":"(nil)","opacity":0,"compositorElementId":"(528)"}
Updated:
{"parent":"0x241fa20dbf30","localTransformSpace":"0x241fa20b2790","outputClip":"(nil)","opacity":0,"directCompositingReasons":"activeAnimation","compositorElementId":"(528)"}
#0 0x7ff6ae2d7bad base::debug::StackTrace::StackTrace()
#1 0x7ff6ae2d612c base::debug::StackTrace::StackTrace()
#2 0x7ff6ae35fe1d logging::LogMessage::~LogMessage()
#3 0x7ff699e4c46f blink::FindObjectPropertiesNeedingUpdateScope::~FindObjectPropertiesNeedingUpdateScope()
#4 0x7ff699e48cdd blink::PaintPropertyTreeBuilder::UpdateFragmentPropertiesForSelf()
#5 0x7ff699e44c4c blink::PaintPropertyTreeBuilder::UpdatePropertiesForSelf()
#6 0x7ff699e744d8 blink::PrePaintTreeWalk::Walk()
...
#19 0x7ff699e741c2 blink::PrePaintTreeWalk::Walk()
#20 0x7ff69943256d blink::LocalFrameView::PrePaint()
#21 0x7ff699430d0f blink::LocalFrameView::UpdateLifecyclePhasesInternal()
#22 0x7ff6994304c2 blink::LocalFrameView::UpdateAllLifecyclePhases()
#23 0x7ff699d67e07 blink::PageAnimator::UpdateAllLifecyclePhases()
#24 0x7ff699d6d3a5 blink::PageWidgetDelegate::UpdateAllLifecyclePhases()
#25 0x7ff6993a3010 blink::WebViewImpl::UpdateAllLifecyclePhases()
#26 0x7ff6994cff61 blink::WebViewFrameWidget::UpdateAllLifecyclePhases()
#27 0x7ff6a9466cfb content::RenderWidget::UpdateVisualState()
#28 0x7ff6a92a2a5a content::RenderWidgetCompositor::UpdateLayerTreeHost()
#29 0x7ff6a6313b5a cc::LayerTreeHost::RequestMainFrameUpdate()
#30 0x7ff6a6406207 cc::ProxyMain::BeginMainFrame()
#31 0x7ff6a6402dbe _ZN4base8internal13FunctorTraitsIMN2cc9ProxyMainEFvNSt3__110unique_ptrINS2_28BeginMainFrameAndCommitStateENS4_14default_deleteIS6_EEEEEvE6InvokeINS_7WeakPtrIS3_
EEJS9_EEEvSB_OT_DpOT0_
#32 0x7ff6a6402bb5 _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIMN2cc9ProxyMainEFvNSt3__110unique_ptrINS4_28BeginMainFrameAndCommitStateENS6_14default_deleteIS8_EEEEENS_7WeakPt
rIS5_EEJSB_EEEvOT_OT0_DpOT1_
#33 0x7ff6a6402a66 _ZN4base8internal7InvokerINS0_9BindStateIMN2cc9ProxyMainEFvNSt3__110unique_ptrINS3_28BeginMainFrameAndCommitStateENS5_14default_deleteIS7_EEEEEJNS_7WeakPtrIS4_E
ENS0_13PassedWrapperISA_EEEEEFvvEE7RunImplISC_NS5_5tupleIJSE_SG_EEEJLm0ELm1EEEEvOT_OT0_NS5_16integer_sequenceImJXspT1_EEEE
#34 0x7ff6a6402959 _ZN4base8internal7InvokerINS0_9BindStateIMN2cc9ProxyMainEFvNSt3__110unique_ptrINS3_28BeginMainFrameAndCommitStateENS5_14default_deleteIS7_EEEEEJNS_7WeakPtrIS4_E
ENS0_13PassedWrapperISA_EEEEEFvvEE7RunOnceEPNS0_13BindStateBaseE
#35 0x7ff6ae285f21 _ZNO4base12OnceCallbackIFvvEE3RunEv
#36 0x7ff6ae2dc4f0 base::debug::TaskAnnotator::RunTask()