I tried using a new data dir. The following steps reproed the crash:

1) Launch with an empty user data dir.
2) Kill Chromium from command line.
3) Relaunch with the same user data dir.

erikchen@erikchen-macbookpro3 ~/projects/chromium/src  (temp57)$ out/gn/Chromium.app/Contents/MacOS/Chromium  --user-data-dir=/tmp/ah34s --enable-features=GlobalResourceCoordinator
[78637:4611:0717/203946.536654:WARNING:notification_platform_bridge_mac.mm(506)] AlertNotificationService: XPC connection interrupted.
[78637:36867:0717/203946.984041:ERROR:coordination_unit_impl.cc(44)] CoordinationUnitImpl: 78637
[78649:775:0717/203947.512179:ERROR:FrameResourceCoordinator.cpp(27)] FrameResourceCoordinator::Create
[78637:33795:0717/203947.716579:WARNING:simple_synchronous_entry.cc(1102)] Could not open platform files for entry.
[78637:36867:0717/203947.766767:ERROR:coordination_unit_impl.cc(44)] CoordinationUnitImpl: 78637
[78637:36867:0717/203947.842460:ERROR:coordination_unit_impl.cc(44)] CoordinationUnitImpl: 78637
[78649:775:0717/203948.578315:ERROR:FrameResourceCoordinator.cpp(27)] FrameResourceCoordinator::Create
[78637:36867:0717/203948.624105:ERROR:coordination_unit_impl.cc(44)] CoordinationUnitImpl: 78637
[78649:775:0717/203949.053605:ERROR:FrameResourceCoordinator.cpp(27)] FrameResourceCoordinator::Create
[78649:775:0717/203954.225789:FATAL:WebFrameClient.h(198)] Check failed: false. 
0   libbase.dylib                       0x00000001008f470e base::debug::StackTrace::StackTrace(unsigned long) + 174
1   libbase.dylib                       0x00000001008f47dd base::debug::StackTrace::StackTrace(unsigned long) + 29
2   libbase.dylib                       0x00000001008f2a7c base::debug::StackTrace::StackTrace() + 28
3   libbase.dylib                       0x000000010099179f logging::LogMessage::~LogMessage() + 479
4   libbase.dylib                       0x000000010098f115 logging::LogMessage::~LogMessage() + 21
5   libblink_modules.dylib              0x000000013dd26632 blink::WebFrameClient::GetInterfaceProvider() + 130
6   libblink_web.dylib                  0x0000000140b86dde blink::LocalFrameClientImpl::GetInterfaceProvider() + 62
7   libblink_core.dylib                 0x000000013420a011 blink::LocalFrame::LocalFrame(blink::LocalFrameClient*, blink::Page&, blink::FrameOwner*, blink::InterfaceRegistry*) + 913
8   libblink_core.dylib                 0x0000000134209c11 blink::LocalFrame::Create(blink::LocalFrameClient*, blink::Page&, blink::FrameOwner*, blink::InterfaceRegistry*) + 129
9   libblink_web.dylib                  0x0000000140b97496 blink::WebLocalFrameImpl::InitializeCoreFrame(blink::Page&, blink::FrameOwner*, WTF::AtomicString const&) + 118
10  libblink_web.dylib                  0x0000000140b96ecb blink::WebLocalFrameImpl::CreateMainFrame(blink::WebView*, blink::WebFrameClient*, blink::InterfaceRegistry*, blink::WebFrame*, blink::WebString const&, blink::WebSandboxFlags) + 411
11  libblink_web.dylib                  0x0000000140b8b645 blink::WebFactoryImpl::CreateMainWebLocalFrameBase(blink::WebView*, blink::WebFrameClient*, blink::InterfaceRegistry*) const + 117
12  libblink_modules.dylib              0x000000013dd20531 blink::WebEmbeddedWorkerImpl::PrepareShadowPageForLoader() + 497
13  libblink_modules.dylib              0x000000013dd2020c blink::WebEmbeddedWorkerImpl::StartWorkerContext(blink::WebEmbeddedWorkerStartData const&) + 828
14  libcontent.dylib                    0x000000011fb79ac9 content::EmbeddedWorkerInstanceClientImpl::StartWorkerContext(content::EmbeddedWorkerStartParams const&, mojo::StructPtr<content::mojom::ServiceWorkerInstalledScriptsInfo>, std::__1::unique_ptr<content::ServiceWorkerContextClient, std::__1::default_delete<content::ServiceWorkerContextClient> >) + 3657
15  libcontent.dylib                    0x000000011fb781fc content::EmbeddedWorkerInstanceClientImpl::StartWorker(content::EmbeddedWorkerStartParams const&, mojo::InterfaceRequest<content::mojom::ServiceWorkerEventDispatcher>, mojo::StructPtr<content::mojom::ServiceWorkerInstalledScriptsInfo>, mojo::AssociatedInterfacePtrInfo<content::mojom::EmbeddedWorkerInstanceHost>) + 1468
16  libcontent.dylib                    0x000000011cd2d105 content::mojom::EmbeddedWorkerInstanceClientStubDispatch::Accept(content::mojom::EmbeddedWorkerInstanceClient*, mojo::Message*) + 949
17  libcontent.dylib                    0x000000011fb7b913 content::mojom::EmbeddedWorkerInstanceClientStub<mojo::RawPtrImplRefTraits<content::mojom::EmbeddedWorkerInstanceClient> >::Accept(mojo::Message*) + 83
18  libbindings.dylib                   0x0000000119c19dd5 mojo::InterfaceEndpointClient::HandleValidatedMessage(mojo::Message*) + 5733
19  libbindings.dylib                   0x0000000119c18761 mojo::InterfaceEndpointClient::HandleIncomingMessageThunk::Accept(mojo::Message*) + 33
20  libbindings.dylib                   0x0000000119c167a5 mojo::FilterChain::Accept(mojo::Message*) + 821
21  libbindings.dylib                   0x0000000119c1dac2 mojo::InterfaceEndpointClient::HandleIncomingMessage(mojo::Message*) + 242
22  libbindings.dylib                   0x0000000119c3ecfb mojo::internal::MultiplexRouter::ProcessIncomingMessage(mojo::Message*, mojo::internal::MultiplexRouter::ClientCallBehavior, base::SequencedTaskRunner*) + 1483
23  libbindings.dylib                   0x0000000119c3e392 mojo::internal::MultiplexRouter::Accept(mojo::Message*) + 642
24  libbindings.dylib                   0x0000000119c167a5 mojo::FilterChain::Accept(mojo::Message*) + 821
25  libbindings.dylib                   0x0000000119c06a05 mojo::Connector::ReadSingleMessage(unsigned int*) + 949
26  libbindings.dylib                   0x0000000119c07ddb mojo::Connector::ReadAllAvailableMessages() + 123
27  libbindings.dylib                   0x0000000119c07b3f mojo::Connector::OnHandleReadyInternal(unsigned int) + 271
28  libbindings.dylib                   0x0000000119c07a1b mojo::Connector::OnWatcherHandleReady(unsigned int) + 27
29  libbindings.dylib                   0x0000000119c0baff void base::internal::FunctorTraits<void (mojo::Connector::*)(unsigned int), void>::Invoke<mojo::Connector*, unsigned int>(void (mojo::Connector::*)(unsigned int), mojo::Connector*&&, unsigned int&&) + 143
30  libbindings.dylib                   0x0000000119c0ba2f void base::internal::InvokeHelper<false, void>::MakeItSo<void (mojo::Connector::* const&)(unsigned int), mojo::Connector*, unsigned int>(void (mojo::Connector::* const&&&)(unsigned int), mojo::Connector*&&, unsigned int&&) + 95
31  libbindings.dylib                   0x0000000119c0b9a3 void base::internal::Invoker<base::internal::BindState<void (mojo::Connector::*)(unsigned int), base::internal::UnretainedWrapper<mojo::Connector> >, void (unsigned int)>::RunImpl<void (mojo::Connector::* const&)(unsigned int), std::__1::tuple<base::internal::UnretainedWrapper<mojo::Connector> > const&, 0ul>(void (mojo::Connector::* const&&&)(unsigned int), std::__1::tuple<base::internal::UnretainedWrapper<mojo::Connector> > const&&&, base::IndexSequence<0ul>, unsigned int&&) + 115
32  libbindings.dylib                   0x0000000119c0b8d4 base::internal::Invoker<base::internal::BindState<void (mojo::Connector::*)(unsigned int), base::internal::UnretainedWrapper<mojo::Connector> >, void (unsigned int)>::Run(base::internal::BindStateBase*, unsigned int&&) + 68
33  libbindings.dylib                   0x0000000119bff707 base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>::Run(unsigned int) const + 87
34  libbindings.dylib                   0x0000000119c0a29f mojo::SimpleWatcher::DiscardReadyState(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&) + 31
35  libbindings.dylib                   0x0000000119c0a564 void base::internal::FunctorTraits<void (*)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), void>::Invoke<base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&>(void (*)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&&&, unsigned int&&, mojo::HandleSignalsState const&&&) + 68
36  libbindings.dylib                   0x0000000119c0a510 void base::internal::InvokeHelper<false, void>::MakeItSo<void (* const&)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&>(void (* const&&&)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&&&, unsigned int&&, mojo::HandleSignalsState const&&&) + 80
37  libbindings.dylib                   0x0000000119c0a4b0 void base::internal::Invoker<base::internal::BindState<void (*)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> >, void (unsigned int, mojo::HandleSignalsState const&)>::RunImpl<void (* const&)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), std::__1::tuple<base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> > const&, 0ul>(void (* const&&&)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), std::__1::tuple<base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> > const&&&, base::IndexSequence<0ul>, unsigned int&&, mojo::HandleSignalsState const&) + 112
38  libbindings.dylib                   0x0000000119c0a3b4 base::internal::Invoker<base::internal::BindState<void (*)(base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&, unsigned int, mojo::HandleSignalsState const&), base::Callback<void (unsigned int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> >, void (unsigned int, mojo::HandleSignalsState const&)>::Run(base::internal::BindStateBase*, unsigned int&&, mojo::HandleSignalsState const&) + 84
39  libmojo_public_system_cpp.dylib     0x0000000119d8996d base::Callback<void (unsigned int, mojo::HandleSignalsState const&), (base::internal::CopyMode)1, (base::internal::RepeatMode)1>::Run(unsigned int, mojo::HandleSignalsState const&) const + 109
40  libmojo_public_system_cpp.dylib     0x0000000119d896ab mojo::SimpleWatcher::OnHandleReady(int, unsigned int, mojo::HandleSignalsState const&) + 459
41  libmojo_public_system_cpp.dylib     0x0000000119d8a883 void base::internal::FunctorTraits<void (mojo::SimpleWatcher::*)(int, unsigned int, mojo::HandleSignalsState const&), void>::Invoke<base::WeakPtr<mojo::SimpleWatcher> const&, int const&, unsigned int const&, mojo::HandleSignalsState const&>(void (mojo::SimpleWatcher::*)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher> const&&&, int const&&&, unsigned int const&&&, mojo::HandleSignalsState const&&&) + 179
42  libmojo_public_system_cpp.dylib     0x0000000119d8a705 void base::internal::InvokeHelper<true, void>::MakeItSo<void (mojo::SimpleWatcher::* const&)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher> const&, int const&, unsigned int const&, mojo::HandleSignalsState const&>(void (mojo::SimpleWatcher::* const&&&)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher> const&&&, int const&&&, unsigned int const&&&, mojo::HandleSignalsState const&&&) + 149
43  libmojo_public_system_cpp.dylib     0x0000000119d8a662 void base::internal::Invoker<base::internal::BindState<void (mojo::SimpleWatcher::*)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState>, void ()>::RunImpl<void (mojo::SimpleWatcher::* const&)(int, unsigned int, mojo::HandleSignalsState const&), std::__1::tuple<base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState> const&, 0ul, 1ul, 2ul, 3ul>(void (mojo::SimpleWatcher::* const&&&)(int, unsigned int, mojo::HandleSignalsState const&), std::__1::tuple<base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState> const&&&, base::IndexSequence<0ul, 1ul, 2ul, 3ul>) + 242
44  libmojo_public_system_cpp.dylib     0x0000000119d8a4ac base::internal::Invoker<base::internal::BindState<void (mojo::SimpleWatcher::*)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState>, void ()>::Run(base::internal::BindStateBase*) + 44
45  libbase.dylib                       0x0000000100891e8f base::Callback<void (), (base::internal::CopyMode)0, (base::internal::RepeatMode)0>::Run() + 95
46  libbase.dylib                       0x00000001008f6cb0 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 1040
47  libblink_platform.dylib             0x000000013ad97e38 blink::scheduler::TaskQueueManager::ProcessTaskFromWorkQueue(blink::scheduler::internal::WorkQueue*, bool, blink::scheduler::LazyNow, base::TimeTicks*) + 2152
48  libblink_platform.dylib             0x000000013ad92225 blink::scheduler::TaskQueueManager::DoWork(bool) + 2085
49  libblink_platform.dylib             0x000000013ada1557 void base::internal::FunctorTraits<void (blink::scheduler::TaskQueueManager::*)(bool), void>::Invoke<base::WeakPtr<blink::scheduler::TaskQueueManager> const&, bool const&>(void (blink::scheduler::TaskQueueManager::*)(bool), base::WeakPtr<blink::scheduler::TaskQueueManager> const&&&, bool const&&&) + 151
50  libblink_platform.dylib             0x000000013ada1455 void base::internal::InvokeHelper<true, void>::MakeItSo<void (blink::scheduler::TaskQueueManager::* const&)(bool), base::WeakPtr<blink::scheduler::TaskQueueManager> const&, bool const&>(void (blink::scheduler::TaskQueueManager::* const&&&)(bool), base::WeakPtr<blink::scheduler::TaskQueueManager> const&&&, bool const&&&) + 117
51  libblink_platform.dylib             0x000000013ada13cd void base::internal::Invoker<base::internal::BindState<void (blink::scheduler::TaskQueueManager::*)(bool), base::WeakPtr<blink::scheduler::TaskQueueManager>, bool>, void ()>::RunImpl<void (blink::scheduler::TaskQueueManager::* const&)(bool), std::__1::tuple<base::WeakPtr<blink::scheduler::TaskQueueManager>, bool> const&, 0ul, 1ul>(void (blink::scheduler::TaskQueueManager::* const&&&)(bool), std::__1::tuple<base::WeakPtr<blink::scheduler::TaskQueueManager>, bool> const&&&, base::IndexSequence<0ul, 1ul>) + 125
52  libblink_platform.dylib             0x000000013ada12dc base::internal::Invoker<base::internal::BindState<void (blink::scheduler::TaskQueueManager::*)(bool), base::WeakPtr<blink::scheduler::TaskQueueManager>, bool>, void ()>::Run(base::internal::BindStateBase*) + 44
53  libbase.dylib                       0x0000000100891e8f base::Callback<void (), (base::internal::CopyMode)0, (base::internal::RepeatMode)0>::Run() + 95
54  libbase.dylib                       0x00000001008f6cb0 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 1040
55  libbase.dylib                       0x00000001009ed63e base::MessageLoop::RunTask(base::PendingTask*) + 894
56  libbase.dylib                       0x00000001009edb97 base::MessageLoop::DeferOrRunPendingTask(base::PendingTask) + 71
57  libbase.dylib                       0x00000001009eea7b base::MessageLoop::DoWork() + 715
58  libbase.dylib                       0x00000001009fec5f base::MessagePumpCFRunLoopBase::RunWork() + 95
59  libbase.dylib                       0x00000001009febec ___ZN4base24MessagePumpCFRunLoopBase13RunWorkSourceEPv_block_invoke + 28
60  libbase.dylib                       0x0000000100999b5a base::mac::CallWithEHFrame(void () block_pointer) + 10
61  libbase.dylib                       0x00000001009fe0f5 base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 101

Interesting. 

  // Returns an InterfaceProvider the frame can use to request interfaces from
  // the browser. This method may not return nullptr.
  virtual service_manager::InterfaceProvider* GetInterfaceProvider() {
    NOTREACHED();
    return nullptr;
  }

lpy@ has been looking into this; as far as I understand it the issue is that shadow workers hit this path.

Thanks, the ultimate reason is because we have  WebFrameClient subclasses that don't implement GetInterfaceProvider.

As an FYI, the GRC is being enabled by default (with a temp workaround for this) here: https://chromium-review.googlesource.com/c/572429/