A DCHECK fails for me on ToT with DCHECK's enabled on gmail.com

Here's a callstack:

[1:27:0904/151520.849840:FATAL:process_memory_dump.cc(484)] Check failed: is_black_hole_non_fatal_for_testing_. 
#0 0x5558cdb139ec base::debug::StackTrace::StackTrace()
#1 0x5558cda654fb logging::LogMessage::~LogMessage()
#2 0x5558cdaf090b base::trace_event::ProcessMemoryDump::GetBlackHoleMad()
#3 0x5558cdaf06f8 base::trace_event::ProcessMemoryDump::AddAllocatorDumpInternal()
#4 0x5558cdaf05bc base::trace_event::ProcessMemoryDump::CreateAllocatorDump()
#5 0x5558d0a26492 gin::V8IsolateMemoryDumpProvider::DumpHeapStatistics()
#6 0x5558d0a25b28 gin::V8IsolateMemoryDumpProvider::OnMemoryDump()
#7 0x5558cdaecef9 base::trace_event::MemoryDumpManager::InvokeOnMemoryDump()
#8 0x5558cdaeca95 base::trace_event::MemoryDumpManager::ContinueAsyncProcessDump()
#9 0x5558cda6da2d base::debug::TaskAnnotator::RunTask()
#10 0x5558cdabe936 base::sequence_manager::internal::ThreadControllerImpl::DoWork()
#11 0x5558cae2fc58 _ZN4base8internal7InvokerINS0_9BindStateIMN3net14MDnsConnectionEFviEJNS_7WeakPtrIS4_EEiEEEFvvEE3RunEPNS0_13BindStateBaseE
#12 0x5558cda6da2d base::debug::TaskAnnotator::RunTask()
#13 0x5558cda6caee base::MessageLoop::RunTask()
#14 0x5558cda6cef2 base::MessageLoop::DoWork()
#15 0x5558cda70606 base::MessagePumpDefault::Run()
#16 0x5558cda6c5c1 base::MessageLoop::Run()
#17 0x5558cda94726 base::RunLoop::Run()
#18 0x5558cdae1e5a base::Thread::Run()
#19 0x5558cdae21e7 base::Thread::ThreadMain()
#20 0x5558cdb27e3f base::(anonymous namespace)::ThreadFunc()
#21 0x7f52f280b494 start_thread
#22 0x7f52ec977a8f clone

Sid, could you please take a look.