I number of exo unit tests are failing for local target=chromeos builds. Looks related to:

https://chromium.googlesource.com/chromium/src/+/d8f4f642d72fc5fdb428f5a90ca207c2143a6f79

Here's an example:

[ RUN      ] PointerTest.OnPointerEnter
Received signal 11 <unknown> 000000000000
#0 0x7f621b27317e base::debug::StackTrace::StackTrace()
#1 0x7f621b272cbf base::debug::(anonymous namespace)::StackDumpSignalHandler()
#2 0x7f621b69e330 <unknown>
#3 0x7f6212900956 <unknown>
#4 0x7f62129009a0 <unknown>
#5 0x00000046c495 __gnu_debug::_Safe_iterator_base::_Safe_iterator_base()
#6 0x0000004ed270 __gnu_debug::_Safe_iterator<>::_Safe_iterator()
#7 0x0000004effb8 std::__debug::map<>::erase()
#8 0x0000004ebaaf std::__debug::map<>::erase()
#9 0x0000004ea542 exo::CompositorFrameSinkHolder::ReclaimResources()
#10 0x00000061f228 cc::mojom::MojoCompositorFrameSinkClientStubDispatch::Accept()
#11 0x0000004ec4f3 cc::mojom::MojoCompositorFrameSinkClientStub<>::Accept()
#12 0x7f621ba54dd2 mojo::InterfaceEndpointClient::HandleValidatedMessage()
#13 0x7f621ba547c1 mojo::InterfaceEndpointClient::HandleIncomingMessageThunk::Accept()
#14 0x7f621ba5276a mojo::FilterChain::Accept()
#15 0x7f621ba56656 mojo::InterfaceEndpointClient::HandleIncomingMessage()
#16 0x7f621ba6747a mojo::internal::MultiplexRouter::ProcessIncomingMessage()
#17 0x7f621ba66c04 mojo::internal::MultiplexRouter::Accept()
#18 0x7f621ba5276a mojo::FilterChain::Accept()
#19 0x7f621ba47735 mojo::Connector::ReadSingleMessage()
#20 0x7f621ba48259 mojo::Connector::ReadAllAvailableMessages()
#21 0x7f621ba480e1 mojo::Connector::OnHandleReadyInternal()
#22 0x7f621ba47fbb mojo::Connector::OnWatcherHandleReady()
#23 0x7f621ba4a2cc _ZN4base8internal13FunctorTraitsIMN4mojo9ConnectorEFvjEvE6InvokeIPS3_JjEEEvS5_OT_DpOT0_
#24 0x7f621ba4a1d6 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKMN4mojo9ConnectorEFvjEJPS5_jEEEvOT_DpOT0_
#25 0x7f621ba4a167 _ZN4base8internal7InvokerINS0_9BindStateIMN4mojo9ConnectorEFvjEJNS0_17UnretainedWrapperIS4_EEEEEFvjEE7RunImplIRKS6_RKSt5tupleIJS8_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEEOj
#26 0x7f621ba4a06c _ZN4base8internal7InvokerINS0_9BindStateIMN4mojo9ConnectorEFvjEJNS0_17UnretainedWrapperIS4_EEEEEFvjEE3RunEPNS0_13BindStateBaseEOj
#27 0x7f621ba1469f base::internal::RunMixin<>::Run()
#28 0x7f621ba140fd mojo::Watcher::OnHandleReady()
#29 0x7f621ba14e5e _ZN4base8internal13FunctorTraitsIMN4mojo7WatcherEFvjEvE6InvokeIRKNS_7WeakPtrIS3_EEJRKjEEEvS5_OT_DpOT0_
#30 0x7f621ba14cdf _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMN4mojo7WatcherEFvjERKNS_7WeakPtrIS5_EEJRKjEEEvOT_OT0_DpOT1_
#31 0x7f621ba14c53 _ZN4base8internal7InvokerINS0_9BindStateIMN4mojo7WatcherEFvjEJNS_7WeakPtrIS4_EEjEEEFvvEE7RunImplIRKS6_RKSt5tupleIJS8_jEEJLm0ELm1EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE
#32 0x7f621ba14b3c _ZN4base8internal7InvokerINS0_9BindStateIMN4mojo7WatcherEFvjEJNS_7WeakPtrIS4_EEjEEEFvvEE3RunEPNS0_13BindStateBaseE
#33 0x7f621b279041 _ZNO4base8internal8RunMixinINS_8CallbackIFvvELNS0_8CopyModeE0ELNS0_10RepeatModeE0EEEE3RunEv
#34 0x7f621b278a29 base::debug::TaskAnnotator::RunTask()
#35 0x7f621b2fc41f base::MessageLoop::RunTask()
#36 0x7f621b2fc684 base::MessageLoop::DeferOrRunPendingTask()
#37 0x7f621b2fc96e base::MessageLoop::DoWork()
#38 0x7f621b31239c base::MessagePumpGlib::HandleDispatch()
#39 0x7f621b312a61 base::(anonymous namespace)::WorkSourceDispatch()
#40 0x7f6211cc2e04 g_main_context_dispatch
#41 0x7f6211cc3048 <unknown>
#42 0x7f6211cc30ec g_main_context_iteration
#43 0x7f621b31249f base::MessagePumpGlib::Run()
#44 0x7f621b2fbfe5 base::MessageLoop::RunHandler()
#45 0x7f621b39b899 base::RunLoop::Run()
#46 0x7f621b39bad9 base::RunLoop::RunUntilIdle()
#47 0x000000840f81 ash::test::AshTestHelper::RunAllPendingInMessageLoop()
#48 0x00000083ecd1 ash::test::AshTestBase::RunAllPendingInMessageLoop()
#49 0x00000083ec6e ash::test::AshTestBase::TearDown()
#50 0x0000006d4d80 exo::test::ExoTestBase::TearDown()
#51 0x000000873e3e testing::internal::HandleSehExceptionsInMethodIfSupported<>()
#52 0x000000863f02 testing::internal::HandleExceptionsInMethodIfSupported<>()
#53 0x000000858bbb testing::Test::Run()
#54 0x0000008592ad testing::TestInfo::Run()
#55 0x00000085984f testing::TestCase::Run()
#56 0x00000085eb9c testing::internal::UnitTestImpl::RunAllTests()
#57 0x0000008777be testing::internal::HandleSehExceptionsInMethodIfSupported<>()
#58 0x0000008656e2 testing::internal::HandleExceptionsInMethodIfSupported<>()
#59 0x00000085e83f testing::UnitTest::Run()
#60 0x000000805201 RUN_ALL_TESTS()
#61 0x000000804142 base::TestSuite::Run()

staraz@, can you take a look?