DevToolsAttachAndDetachNotifications.*
DevtoolsInterceptionWithAuthProxyTest.*
DevToolsNetworkOfflineEmulationTest.*
HeadlessBrowserTest.*
HeadlessBrowserTestWithProxy.*
HeadlessDevToolsClientAttachTest.*
HeadlessProtocolBrowserTest.*
HeadlessProtocolCompositorBrowserTest.*
HeadlessWebContentsScreenshotTest.*
HeadlessWebContentsTest.*

are flaking on  Win10 Tests x64 (dbg), e.g.  https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win10%20Tests%20x64%20%28dbg%29/3035

[ RUN      ] HeadlessProtocolCompositorBrowserTest.RendererWindowLocationFragments
[92:9104:0910/102146.924:17223640:ERROR:registration_protocol_win.cc(84)] TransactNamedPipe: The pipe has been ended. (0x6D)
[92:9104:0910/102146.927:17223656:WARNING:resource_bundle.cc(358)] locale_file_path.empty() for locale
[92:9104:0910/102146.967:17223687:ERROR:gpu_process_transport_factory.cc(638)] Switching to software compositing.
[92:9104:0910/102146.967:17223687:ERROR:gpu_process_transport_factory.cc(980)] Lost UI shared context.
[0910/102147.161:ERROR:registration_protocol_win.cc(56)] CreateFile: The system cannot find the file specified. (0x2)
../../headless/test/headless_browser_test.cc(249): error: Failed
Abnormal renderer termination
Stack trace:
Backtrace:
	StackTraceGetter::CurrentStackTrace [0x00007FF64560D960+80]
	testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop [0x00007FF64562724A+90]
	testing::internal::AssertHelper::operator= [0x00007FF645626D4A+90]
	headless::HeadlessAsyncDevTooledBrowserTest::RenderProcessExited [0x00007FF6451555B0+192]
	headless::HeadlessWebContentsImpl::RenderProcessExited [0x00007FF8372C89D5+421]
	content::RenderProcessHostImpl::ProcessDied [0x00007FF82F76BABB+1227]
	content::RenderProcessHostImpl::OnChannelError [0x00007FF82F76D923+179]
	IPC::ChannelProxy::Context::OnDispatchError [0x00007FF839F314ED+45]
	??$Invoke@P8Context@ChannelProxy@IPC@@EAAXXZAEBV?$scoped_refptr@VContext@ChannelProxy@IPC@@@@$$V@?$FunctorTraits@P8Context@ChannelProxy@IPC@@EAAXXZX@internal@base@@SAXP8Context@ChannelProxy@IPC@@EAAXXZAEBV?$scoped_refptr@VContext@ChannelProxy@IPC@@@@@Z [0x00007FF839F384A3+67]
	base::internal::InvokeHelper<0,void>::MakeItSo<void (__cdecl IPC::ChannelProxy::Context::*const & __ptr64)(void) __ptr64,scoped_refptr<IPC::ChannelProxy::Context> const & __ptr64> [0x00007FF839F38416+86]
	base::internal::Invoker<base::internal::BindState<void (__cdecl IPC::ChannelProxy::Context::*)(void) __ptr64,scoped_refptr<IPC::ChannelProxy::Context> >,void __cdecl(void)>::RunImpl<void (__cdecl IPC::ChannelProxy::Context::*const & __ptr64)(void) __ptr64 [0x00007FF839F383B9+73]
	base::internal::Invoker<base::internal::BindState<void (__cdecl IPC::ChannelProxy::Context::*)(void) __ptr64,scoped_refptr<IPC::ChannelProxy::Context> >,void __cdecl(void)>::Run [0x00007FF839F382DC+60]
	base::OnceCallback<void __cdecl(void)>::Run [0x00007FF8393BD891+97]
	base::debug::TaskAnnotator::RunTask [0x00007FF839425EF3+915]
	base::MessageLoop::RunTask [0x00007FF8394C2FB3+979]
	base::MessageLoop::DeferOrRunPendingTask [0x00007FF8394C3503+83]
	base::MessageLoop::DoWork [0x00007FF8394C39F4+484]
	base::MessagePumpForUI::DoRunLoop [0x00007FF8394D09CD+77]
	base::MessagePumpWin::Run [0x00007FF8394CF93C+140]
	base::MessageLoop::Run [0x00007FF8394C282C+524]
	base::RunLoop::Run [0x00007FF8395A0E5A+506]
	headless::HeadlessBrowserTest::RunAsynchronousTest [0x00007FF645154EA0+432]
	headless::HeadlessAsyncDevTooledBrowserTest::RunTest [0x00007FF6451558E5+709]
	headless::HeadlessProtocolCompositorBrowserTest_RendererWindowLocationFragments_Test::RunTestOnMainThread [0x00007FF645163667+87]
	content::BrowserTestBase::ProxyRunTestOnMainThreadLoop [0x00007FF6466AB81B+811]
	??$Invoke@P8BrowserTestBase@content@@EAAXXZPEAV12@$$V@?$FunctorTraits@P8BrowserTestBase@content@@EAAXXZX@internal@base@@SAXP8BrowserTestBase@content@@EAAXXZ$$QEAPEAV34@@Z [0x00007FF6466AEADA+26]
	base::internal::InvokeHelper<0,void>::MakeItSo<void (__cdecl content::BrowserTestBase::*const & __ptr64)(void) __ptr64,content::BrowserTestBase * __ptr64> [0x00007FF6466AEA54+52]
	base::internal::Invoker<base::internal::BindState<void (__cdecl content::BrowserTestBase::*)(void) __ptr64,base::internal::UnretainedWrapper<content::BrowserTestBase> >,void __cdecl(void)>::RunImpl<void (__cdecl content::BrowserTestBase::*const & __ptr64) [0x00007FF6466AEA08+88]
	base::internal::Invoker<base::internal::BindState<void (__cdecl content::BrowserTestBase::*)(void) __ptr64,base::internal::UnretainedWrapper<content::BrowserTestBase> >,void __cdecl(void)>::Run [0x00007FF6466AE91C+60]
	base::OnceCallback<void __cdecl(void)>::Run [0x00007FF8393BD891+97]
	base::debug::TaskAnnotator::RunTask [0x00007FF839425EF3+915]
	base::MessageLoop::RunTask [0x00007FF8394C2FB3+979]
	base::MessageLoop::DeferOrRunPendingTask [0x00007FF8394C3503+83]
	base::MessageLoop::DoWork [0x00007FF8394C39F4+484]
	base::MessagePumpForUI::DoRunLoop [0x00007FF8394D09CD+77]
	base::MessagePumpWin::Run [0x00007FF8394CF93C+140]
	base::MessageLoop::Run [0x00007FF8394C282C+524]
	base::RunLoop::Run [0x00007FF8395A0E5A+506]
	content::BrowserMainLoop::MainMessageLoopRun [0x00007FF82E7D0A10+512]
	content::BrowserMainLoop::RunMainMessageLoopParts [0x00007FF82E7D06A5+517]
	content::BrowserMainRunnerImpl::Run [0x00007FF82E7E174F+335]
	headless::HeadlessContentMainDelegate::RunProcess [0x00007FF8372D55B7+503]
[92:4148:0910/102147.373:17224093:WARNING:discardable_shared_memory_manager.cc(438)] Some MojoDiscardableSharedMemoryManagerImpls are still alive. They will be leaked.
[  FAILED  ] HeadlessProtocolCompositorBrowserTest.RendererWindowLocationFragments, where TypeParam =  and GetParam() =  (545 ms)