Managed to get this DCHECK to fail when browsing theverge.com using a debug build:

[1:4:0313/143448:FATAL:tile_manager.cc(206)] Check failed: decode_it == graph->nodes.end() || !high_priority || static_cast<uint16_t>(TASK_CATEGORY_FOREGROUND) == decode_it->category. 
#0 0x7fd2924e2d3e base::debug::StackTrace::StackTrace()
#1 0x7fd2925347cc logging::LogMessage::~LogMessage()
#2 0x7fd290f3a71b cc::(anonymous namespace)::InsertNodesForRasterTask()
#3 0x7fd290f398b9 cc::TileManager::ScheduleTasks()
#4 0x7fd290f372d0 cc::TileManager::PrepareTiles()
#5 0x7fd290f8caa6 cc::LayerTreeHostImpl::PrepareTiles()
#6 0x7fd290f8b8b7 cc::LayerTreeHostImpl::CommitComplete()
#7 0x7fd29100d9dc cc::ProxyImpl::ScheduledActionCommit()
#8 0x7fd290ee8f10 cc::Scheduler::ProcessScheduledActions()
#9 0x7fd290ee9e6e cc::Scheduler::NotifyReadyToCommit()
#10 0x7fd291009ace cc::ProxyImpl::StartCommitOnImpl()
#11 0x7fd29101ea49 _ZN4base8internal15RunnableAdapterIMN2cc9ProxyImplEFvPNS2_15CompletionEventEPNS2_13LayerTreeHostENS_9TimeTicksEbEE3RunIJRKS5_RKS7_RKS8_RKbEEEvPS3_DpOT_
#12 0x7fd29101e8c8 _ZN4base8internal12InvokeHelperILb1EvNS0_15RunnableAdapterIMN2cc9ProxyImplEFvPNS3_15CompletionEventEPNS3_13LayerTreeHostENS_9TimeTicksEbEEEE8MakeItSoINS_7WeakPtrIS4_EEJRKS6_RKS8_RKS9_RKbEEEvSC_T_DpOT0_
#13 0x7fd29101e819 _ZN4base8internal7InvokerINS_13IndexSequenceIJLm0ELm1ELm2ELm3ELm4EEEENS0_9BindStateINS0_15RunnableAdapterIMN2cc9ProxyImplEFvPNS6_15CompletionEventEPNS6_13LayerTreeHostENS_9TimeTicksEbEEEFvPS7_S9_SB_SC_bEJRNS_7WeakPtrIS7_EES9_RSB_RSC_bEEENS0_12InvokeHelperILb1EvSF_EEFvvEE3RunEPNS0_13BindStateBaseE
#14 0x7fd2924ca3fe base::Callback<>::Run()
#15 0x7fd2924e813e base::debug::TaskAnnotator::RunTask()
#16 0x7fd29254f707 base::MessageLoop::RunTask()
#17 0x7fd29254f978 base::MessageLoop::DeferOrRunPendingTask()
#18 0x7fd29254fb42 base::MessageLoop::DoWork()
#19 0x7fd29255f864 base::MessagePumpDefault::Run()
#20 0x7fd29254f19a base::MessageLoop::RunHandler()
#21 0x7fd2925bbe04 base::RunLoop::Run()
#22 0x7fd29254e491 base::MessageLoop::Run()
#23 0x7fd2926270e9 base::Thread::Run()
#24 0x7fd29262741d base::Thread::ThreadMain()
#25 0x7fd292614b1a base::(anonymous namespace)::ThreadFunc()
#26 0x7fd2807e5182 start_thread
#27 0x7fd28051247d clone

Version of Chrome was:
Cr-Commit-Position: refs/heads/master@{#380425}