I'm seeing the following DCHECK hit:

[1:1:1220/143214.895881:FATAL:event_dispatcher.cc(164)] Check failed: !frame->GetAdTracker() || !frame->GetAdTracker()->IsAdScriptInStack(). 
#0 0x7f9b124987df base::debug::StackTrace::StackTrace()
#1 0x7f9b123bbd1a logging::LogMessage::~LogMessage()
#2 0x7f9b092afb2a blink::EventDispatcher::Dispatch()
#3 0x7f9b09491ece blink::MouseEvent::DispatchEvent()
#4 0x7f9b092af20f blink::EventDispatcher::DispatchEvent()
#5 0x7f9b09811e75 blink::MouseEventManager::DispatchMouseEvent()
#6 0x7f9b0981235f blink::MouseEventManager::DispatchMouseClickIfNeeded()
#7 0x7f9b09806c39 blink::EventHandler::HandleMouseReleaseEvent()
#8 0x7f9b09c3c380 blink::PageWidgetEventHandler::HandleMouseUp()
#9 0x7f9b094ea6f2 blink::WebViewImpl::HandleMouseUp()
#10 0x7f9b09c3bf7c blink::PageWidgetDelegate::HandleInputEvent()
#11 0x7f9b094f0fdf blink::WebViewImpl::HandleInputEvent()
#12 0x7f9b0962d458 blink::WebViewFrameWidget::HandleInputEvent()
#13 0x7f9b0ff20d44 content::RenderWidgetInputHandler::HandleInputEvent()
#14 0x7f9b100c5837 content::RenderWidget::HandleInputEvent()
#15 0x7f9b0ff1e890 content::QueuedWebInputEvent::Dispatch()
#16 0x7f9b0ff1dcbc content::MainThreadEventQueue::DispatchEvents()
#17 0x7f9b0f25d47b _ZN4base8internal7InvokerINS0_9BindStateIMN7content28ServiceManagerConnectionImpl15IOThreadContextEFvvEJ13scoped_refptrIS5_EEEEFvvEE7RunOnceEPNS0_13BindStateBaseE
#18 0x7f9b1239d949 base::debug::TaskAnnotator::RunTask()
#19 0x7f9b12434446 base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl()
#20 0x7f9b123cd89d base::MessagePumpDefault::Run()
#21 0x7f9b12434c39 base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run()
#22 0x7f9b123fd866 base::RunLoop::Run()
#23 0x7f9b100d5a64 content::RendererMain()
#24 0x7f9b101acbc3 content::RunZygote()
#25 0x7f9b101addce content::ContentMainRunnerImpl::Run()
#26 0x7f9b01583530 service_manager::Main()
#27 0x7f9b101ac1c1 content::ContentMain()
#28 0x55a627f2a1b3 ChromeMain
#29 0x7f9b03a002b1 __libc_start_main
#30 0x55a627f2a02a _start

Reproduction steps:

Navigate to http://slickdeals.net, wait for it to load, and click in a grey background area. The DCHECK should hit.