Happening consistently in telemetry_perf_unittests step on linux-chromeos-rel:

  https://ci.chromium.org/buildbot/tryserver.chromium.chromiumos/linux-chromeos-rel/56538

Test case is:

  benchmarks.system_health_smoke_test.SystemHealthBenchmarkSmokeTest.system_health.memory_desktop.browse:media:pinterest

Stack trace:

  	[1:1:0208/153634.881115:FATAL:LayoutGeometryMap.cpp(186)] Check failed: RoundedIntRect(layout_object_mapped_result) == RoundedIntRect(result.BoundingBox()) || layout_object_mapped_result.MayNotHaveExactIntRectRepresentation() || result.BoundingBox().MayNotHaveExactIntRectRepresentation(). Rounded: "1217,485 41x42" vs "1217,485 41x43". Original: "1217.14,485.069 41x42.5" vs "1217.14,485.069 41x42.5"
  	#0 0x7f16211cb51c base::debug::StackTrace::StackTrace()
  	#1 0x7f16211e5bfc logging::LogMessage::~LogMessage()
  	#2 0x7f16245877e2 blink::LayoutGeometryMap::MapToAncestor()
  	#3 0x7f162482c5f5 blink::CompositingInputsUpdater::UpdateRecursive()
  	#4 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#5 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#6 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#7 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#8 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#9 0x7f162482d030 blink::CompositingInputsUpdater::UpdateRecursive()
  	#10 0x7f162482c250 blink::CompositingInputsUpdater::Update()
  	#11 0x7f1624800285 blink::PaintLayerCompositor::UpdateIfNeeded()
  	#12 0x7f16247ffccc blink::PaintLayerCompositor::UpdateIfNeededRecursiveInternal()
  	#13 0x7f16247ff776 blink::PaintLayerCompositor::UpdateIfNeededRecursive()
  	#14 0x7f1624312c10 blink::LocalFrameView::UpdateLifecyclePhasesInternal()
  	#15 0x7f16243128da blink::LocalFrameView::UpdateAllLifecyclePhases()
  	#16 0x7f16247550ee blink::PageAnimator::UpdateAllLifecyclePhases()
  	#17 0x7f1625c441e8 blink::WebViewImpl::UpdateLifecycle()
  	#18 0x7f1625c949ab blink::WebViewFrameWidget::UpdateLifecycle()
  	#19 0x7f1624b138b2 content::RenderWidget::UpdateVisualState()
  	#20 0x7f16227935f5 cc::ProxyMain::BeginMainFrame()