browser_tests failing on chromium.chromiumos/Linux ChromiumOS Tests (dbg)

Builders failed on: 
- Linux ChromiumOS Tests (dbg)(1): 
  https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29

This has been causing intermittent failures for several hours.

Sample test log
---------------

SAMLPolicyTest.SAMLInterstitialNext (run #3):
[ RUN      ] SAMLPolicyTest.SAMLInterstitialNext
HTTPS server started on 127.0.0.1:43628...
sending server_data: {"host": "127.0.0.1", "port": 43628} (36 bytes)
HTTPS server started on 127.0.0.1:52622...
sending server_data: {"host": "127.0.0.1", "port": 52622} (36 bytes)
[24907:24907:0307/112605.464966:WARNING:audio_manager.cc(295)] Multiple instances of AudioManager detected
[24907:24907:0307/112605.465073:WARNING:audio_manager.cc(254)] Multiple instances of AudioManager detected
Xlib:  extension "RANDR" missing on display ":99".
[24907:24907:0307/112606.307933:ERROR:network_profile_handler.cc(83)] Manager properties returned from Shill don't contain the field Profiles
[24907:24907:0307/112606.308429:ERROR:network_sms_handler.cc(414)] NetworkSmsHandler: No list value for: Devices
[24907:24930:0307/112606.311207:WARNING:freezer_cgroup_process_manager.cc(61)] Cgroup freezer does not exist or is not writable. Unable to freeze renderer processes.
[24907:24907:0307/112606.315334:WARNING:server_backed_state_keys_broker.cc(78)] Failed to obtain server-backed state keys.
[24907:24907:0307/112606.316089:INFO:remote_commands_service.cc(36)] Fetching remote commands.
[24907:24907:0307/112606.317439:INFO:system_log_uploader.cc(180)] Creating system log uploader.
[24907:24907:0307/112606.317595:INFO:system_log_uploader.cc(307)] Scheduling next system log upload 0 s from now.
[24907:24907:0307/112606.464954:INFO:system_log_uploader.cc(307)] Scheduling next system log upload 43200 s from now.
[24907:24963:0307/112606.684615:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112606.684871:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = , scope = https://www.googleapis.com/auth/userinfo.email, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:06] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24907:0307/112610.317469:WARNING:CONSOLE(1)] "This file is deprecated. Please use `iron-flex-layout/iron-flex-layout-classes.html`, and one of the specific dom-modules instead", source: chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-shadow-flex-layout-extracted.js (1)
[24907:24907:0307/112610.496677:WARNING:device_management_service.cc(286)] DMServer request failed, status: 3, error: -102
[24907:24907:0307/112610.496772:INFO:remote_commands_service.cc(161)] Remote commands fetched.
[24907:24907:0307/112610.497211:WARNING:device_management_service.cc(286)] DMServer request failed, status: 3, error: -102
[24907:24907:0307/112610.517322:WARNING:CONSOLE(1)] "This file is deprecated. Please use `iron-flex-layout/iron-flex-layout-classes.html`, and one of the specific dom-modules instead", source: chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout-extracted.js (1)
[24907:24907:0307/112614.848963:WARNING:CONSOLE(0)] "/deep/ combinator is deprecated. See https://www.chromestatus.com/features/6750456638341120 for more details.", source:  (0)
[24907:24907:0307/112614.949021:ERROR:fake_shill_manager_client.cc(963)] Notify for unknown property: ServiceCompleteList
[24907:24907:0307/112617.983051:INFO:CONSOLE(7810)] "Loading asset bundle oauth-enrollment", source: chrome://oobe/oobe.js (7810)
[24907:24907:0307/112617.990426:ERROR:device_event_log_impl.cc(137)] [11:26:17.990] Network: network_type_pattern.cc:53 ShillNetworkTypeToFlag: Unknown type:
[24907:24907:0307/112617.995969:ERROR:device_event_log_impl.cc(137)] [11:26:17.995] Network: network_type_pattern.cc:53 ShillNetworkTypeToFlag: Unknown type:
[24907:24907:0307/112618.003505:ERROR:device_event_log_impl.cc(137)] [11:26:18.003] Network: network_type_pattern.cc:53 ShillNetworkTypeToFlag: Unknown type:
[24907:24907:0307/112618.004784:ERROR:device_event_log_impl.cc(137)] [11:26:18.004] Network: network_type_pattern.cc:53 ShillNetworkTypeToFlag: Unknown type:
[24907:24907:0307/112618.006550:ERROR:device_event_log_impl.cc(137)] [11:26:18.006] Network: network_type_pattern.cc:53 ShillNetworkTypeToFlag: Unknown type:
[24907:24907:0307/112618.122586:WARNING:device_management_service.cc(286)] DMServer request failed, status: 3, error: -102
[24907:24907:0307/112618.127740:INFO:signin_screen_handler.cc(382)] GetUserLastInputMethod(''): no input method for this user
[24907:24907:0307/112621.784030:INFO:signin_screen_handler.cc(1403)] Login WebUI >> active: 1, source: gaia-signin
[24907:24907:0307/112622.770207:INFO:signin_screen_handler.cc(382)] GetUserLastInputMethod(''): no input method for this user
[24907:24907:0307/112623.658830:INFO:CONSOLE(7794)] "Finished loading asset bundle oauth-enrollment", source: chrome://oobe/oobe.js (7794)
[24907:24907:0307/112623.723216:INFO:signin_screen_handler.cc(1403)] Login WebUI >> active: 0, source: gaia-signin
[24907:24907:0307/112623.735179:INFO:signin_screen_handler.cc(1403)] Login WebUI >> active: 1, source: gaia-signin
[24907:24963:0307/112624.907744:WARNING:fake_gaia.cc(317)] Serving request /samlredirect
127.0.0.1 - - [07/Mar/2017 11:26:24] "GET /samlredirect?domain=example.com&continue=https%3A%2F%2Faccounts.google.com%3A52622%2Fo%2Foauth2%2Fprogrammatic_auth%3Fhl%3Den-US%26scope%3Dhttps%253A%252F%252Fwww.google.com%252Faccounts%252FOAuthLogin%26client_id%3Ddummytoken%26access_type%3Doffline HTTP/1.1" 307 -
[24907:24963:0307/112625.343545:ERROR:fake_gaia.cc(320)] Unhandled request /SAML
127.0.0.1 - - [07/Mar/2017 11:26:25] "GET /SAML?SAMLRequest=fake_request&RelayState=https%3A%2F%2Faccounts.google.com%3A52622%2FDummySAMLContinue HTTP/1.1" 200 -
[24907:24963:0307/112625.695125:ERROR:fake_gaia.cc(320)] Unhandled request /favicon.ico
[24907:24963:0307/112625.695976:WARNING:embedded_test_server.cc(219)] Request not handled. Returning 404: /favicon.ico
127.0.0.1 - - [07/Mar/2017 11:26:25] "GET /favicon.ico HTTP/1.1" 404 -
[24907:24963:0307/112626.079976:ERROR:fake_gaia.cc(320)] Unhandled request /SAMLAuth
127.0.0.1 - - [07/Mar/2017 11:26:26] "POST /SAMLAuth HTTP/1.1" 307 -
[24907:24907:0307/112626.111926:ERROR:surface_manager.cc(117)] Attempting to require callback on nonexistent surface
[24907:24963:0307/112626.234042:WARNING:fake_gaia.cc(317)] Serving request /SSO
127.0.0.1 - - [07/Mar/2017 11:26:26] "POST /SSO?SAMLResponse=fake_response&RelayState=https%3A%2F%2Faccounts.google.com%3A52622%2FDummySAMLContinue HTTP/1.1" 307 -
[24907:24963:0307/112626.378190:WARNING:fake_gaia.cc(317)] Serving request /DummySAMLContinue
127.0.0.1 - - [07/Mar/2017 11:26:26] "POST /DummySAMLContinue HTTP/1.1" 200 -
[24907:24907:0307/112626.461186:WARNING:tab_manager_delegate_chromeos.cc(89)] Set OOM score error:
[24907:24907:0307/112626.608074:WARNING:incoming_task_queue.cc(66)] Requesting super-long task delay period of 9223372036854775807 seconds from here: UserCloudPolicyManagerChromeOS@../../chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc:115
[24907:24963:0307/112626.796047:ERROR:fake_gaia.cc(320)] Unhandled request /favicon.ico
[24907:24963:0307/112626.796729:WARNING:embedded_test_server.cc(219)] Request not handled. Returning 404: /favicon.ico
127.0.0.1 - - [07/Mar/2017 11:26:26] "GET /favicon.ico HTTP/1.1" 404 -
[24907:24963:0307/112626.799167:WARNING:fake_gaia.cc(317)] Serving request /o/oauth2/programmatic_auth
127.0.0.1 - - [07/Mar/2017 11:26:26] "GET /o/oauth2/programmatic_auth?scope=https://www.google.com/accounts/OAuthLogin&client_id=dummytoken HTTP/1.1" 200 -
[24907:24963:0307/112626.899229:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
127.0.0.1 - - [07/Mar/2017 11:26:26] "POST /oauth2/v4/token HTTP/1.1" 200 -
[24907:24963:0307/112626.979282:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112626.979592:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/chromeosdevicemanagement https://www.googleapis.com/auth/userinfo.email, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:26] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24907:0307/112627.003506:ERROR:policy_oauth2_token_fetcher.cc(234)] OAuth2 access token (device management) fetching failed!
[24907:24907:0307/112627.003610:ERROR:policy_oauth2_token_fetcher.cc(251)] Unrecoverable error or retry count max reached.
[24907:24963:0307/112627.355793:WARNING:fake_gaia.cc(317)] Serving request /o/oauth2/programmatic_auth
127.0.0.1 - - [07/Mar/2017 11:26:27] "GET /o/oauth2/programmatic_auth?scope=https://www.google.com/accounts/OAuthLogin&client_id=dummytoken&device_type=chrome HTTP/1.1" 200 -
[24907:24963:0307/112627.765675:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
127.0.0.1 - - [07/Mar/2017 11:26:27] "POST /oauth2/v4/token HTTP/1.1" 200 -
[24907:24907:0307/112627.892321:ERROR:multi_user_window_manager_stub.cc(60)] Not implemented reached in virtual void chrome::MultiUserWindowManagerStub::RemoveObserver(chrome::MultiUserWindowManager::Observer *)
[24907:25020:0307/112627.978368:WARNING:syncer_proto_util.cc(338)] Error posting from syncer: Response Code (bogus on error): -1 Content-Length (bogus on error): -1 Server Status: SYNC_AUTH_ERROR
[24907:24963:0307/112628.145743:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.146178:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/chromeosdevicemanagement https://www.googleapis.com/auth/userinfo.email, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.211111:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.211414:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/userinfo.profile, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.228525:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.228923:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://docs.google.com/feeds/ https://www.googleapis.com/auth/drive https://www.googleapis.com/auth/drive.apps https://www.googleapis.com/auth/drive.apps.readonly, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.236381:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.236672:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.242697:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.242966:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/webhistory, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.250528:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.250843:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.googleapis.com/auth/chromesync, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24963:0307/112628.279498:WARNING:fake_gaia.cc(317)] Serving request /oauth2/v4/token
[24907:24963:0307/112628.279766:ERROR:fake_gaia.cc(732)] Bad request for /oauth2/v4/token - refresh_token = fake-refresh-token, scope = https://www.google.com/accounts/OAuthLogin, client_id = dummytoken
127.0.0.1 - - [07/Mar/2017 11:26:28] "POST /oauth2/v4/token HTTP/1.1" 400 -
[24907:24907:0307/112628.197001:FATAL:keep_alive_registry.cc(83)] Check failed: !g_browser_process->IsShuttingDown().
#0 0x7fa7faa59f9b base::debug::StackTrace::StackTrace()
#1 0x7fa7faa5866c base::debug::StackTrace::StackTrace()
#2 0x7fa7faabefdc logging::LogMessage::~LogMessage()
#3 0x00000427357c KeepAliveRegistry::Register()
#4 0x00000427acbb ScopedKeepAlive::ScopedKeepAlive()
#5 0x0000046f7752 ProfileNotification::ProfileNotification()
#6 0x0000046e04c8 _ZN4base10MakeUniqueI19ProfileNotificationJRP7ProfileRK12NotificationEEENS_8internal16MakeUniqueResultIT_E6ScalarEDpOT0_
#7 0x0000046deb29 MessageCenterNotificationManager::Add()
#8 0x000008a42fa1 SigninErrorNotifier::OnErrorChanged()
#9 0x0000055fc9bf SigninErrorController::AuthStatusChanged()
#10 0x0000045520f4 MutableProfileOAuth2TokenServiceDelegate::AccountStatus::SetLastAuthError()
#11 0x0000045530bb MutableProfileOAuth2TokenServiceDelegate::UpdateAuthError()
#12 0x00000248594e OAuth2TokenService::UpdateAuthError()
#13 0x0000024832e4 OAuth2TokenService::OnFetchComplete()
#14 0x000002482d64 OAuth2TokenService::Fetcher::InformWaitingRequestsAndDelete()
#15 0x0000024830b0 OAuth2TokenService::Fetcher::OnGetTokenFailure()
#16 0x00000247c2f3 OAuth2AccessTokenFetcher::FireOnGetTokenFailure()
#17 0x00000247de8f OAuth2AccessTokenFetcherImpl::OnGetTokenFailure()
#18 0x00000247d9d5 OAuth2AccessTokenFetcherImpl::EndGetAccessToken()
#19 0x00000247e5e7 OAuth2AccessTokenFetcherImpl::OnURLFetchComplete()
#20 0x7fa7f98d75d1 net::URLFetcherCore::InformDelegateFetchIsComplete()
#21 0x7fa7f98d74d3 net::URLFetcherCore::OnCompletedURLRequest()
#22 0x7fa7f98dd757 _ZN4base8internal13FunctorTraitsIMN3net14URLFetcherCoreEFvNS_9TimeDeltaEEvE6InvokeIRK13scoped_refptrIS3_EJRKS4_EEEvS6_OT_DpOT0_
#23 0x7fa7f98dd686 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKMN3net14URLFetcherCoreEFvNS_9TimeDeltaEEJRK13scoped_refptrIS5_ERKS6_EEEvOT_DpOT0_
#24 0x7fa7f98dd613 _ZN4base8internal7InvokerINS0_9BindStateIMN3net14URLFetcherCoreEFvNS_9TimeDeltaEEJ13scoped_refptrIS4_ES5_EEEFvvEE7RunImplIRKS7_RKSt5tupleIJS9_S5_EEJLm0ELm1EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE
#25 0x7fa7f98dd52c _ZN4base8internal7InvokerINS0_9BindStateIMN3net14URLFetcherCoreEFvNS_9TimeDeltaEEJ13scoped_refptrIS4_ES5_EEEFvvEE3RunEPNS0_13BindStateBaseE
#26 0x7fa7faa5f671 _ZNO4base8internal8RunMixinINS_8CallbackIFvvELNS0_8CopyModeE0ELNS0_10RepeatModeE0EEEE3RunEv
#27 0x7fa7faa5ef61 base::debug::TaskAnnotator::RunTask()
#28 0x7fa7faae5e6e base::MessageLoop::RunTask()
#29 0x7fa7faae60e4 base::MessageLoop::DeferOrRunPendingTask()
#30 0x7fa7faae63d4 base::MessageLoop::DoWork()
#31 0x7fa7faafb5bc base::MessagePumpGlib::HandleDispatch()
#32 0x7fa7faafbc61 base::(anonymous namespace)::WorkSourceDispatch()
#33 0x7fa7e0c8be04 g_main_context_dispatch
#34 0x7fa7e0c8c048 <unknown>
#35 0x7fa7e0c8c0ec g_main_context_iteration
#36 0x7fa7faafb6bf base::MessagePumpGlib::Run()
#37 0x7fa7faae5a52 base::MessageLoop::RunHandler()
#38 0x7fa7fab89514 base::RunLoop::Run()
#39 0x000004cbd926 content::RunThisRunLoop()
#40 0x000004cbd8ea content::RunMessageLoop()
#41 0x000001882ef6 chromeos::OobeBaseTest::TearDownOnMainThread()
#42 0x000003b28dc1 InProcessBrowserTest::RunTestOnMainThreadLoop()
#43 0x000004c25174 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#44 0x000000913935 _ZN4base8internal13FunctorTraitsIM25RenderViewContextMenuBaseFvvEvE6InvokeIP21RenderViewContextMenuJEEEvS4_OT_DpOT0_
#45 0x000000913851 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKM25RenderViewContextMenuBaseFvvEJP21RenderViewContextMenuEEEvOT_DpOT0_
#46 0x000004c260d7 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE7RunImplIRKS6_RKSt5tupleIJS8_EEJLm0EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE
#47 0x000004c2601c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE3RunEPNS0_13BindStateBaseE
#48 0x0000008fa57b base::internal::RunMixin<>::Run()
#49 0x000003bcf6cf ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#50 0x000003bce350 ChromeBrowserMainParts::PreMainMessageLoopRun()
#51 0x000001d6edcb chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#52 0x7fa7f2200d11 content::BrowserMainLoop::PreMainMessageLoopRun()
#53 0x7fa7f17153a5 _ZN4base8internal13FunctorTraitsIMN7content22IndexedDBCallbacksImpl13InternalStateEFvvEvE6InvokeIPS4_JEEEvS6_OT_DpOT0_
#54 0x7fa7f220b6d1 _ZN4base8internal12InvokeHelperILb0EiE8MakeItSoIRKMN7content15BrowserMainLoopEFivEJPS5_EEEiOT_DpOT0_
#55 0x7fa7f220b677 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE7RunImplIRKS6_RKSt5tupleIJS8_EEJLm0EEEEiOT_OT0_NS_13IndexSequenceIJXspT1_EEEE
#56 0x7fa7f220b5bc _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE3RunEPNS0_13BindStateBaseE
#57 0x7fa7f1604feb base::internal::RunMixin<>::Run()
#58 0x7fa7f2d0275b content::StartupTaskRunner::RunAllTasksNow()
#59 0x7fa7f21fe9f0 content::BrowserMainLoop::CreateStartupTasks()
#60 0x7fa7f220f157 content::BrowserMainRunnerImpl::Initialize()
#61 0x7fa7f21faf9f content::BrowserMain()