This issue applies to Chrome OS + --enable-features=NetworkService only.

How to Reproduce:
1. Compile with Chrome OS on Linux
2. out/osDefault/browser_tests --brave-new-test-launcher --enable-features=NetworkService --gtest_filter=ArcRobotAccountAuthServiceTest.GetDemoAccount
(See testing/buildbot/filters/mojo.fyi.chromeos.network_browser_tests.filter for more failing tests)

Sample Output:
```
[124264:124264:0917/102025.451775:WARNING:chrome_browser_main_chromeos.cc(588)] Running as stub user with profile dir: test-user
[124297:124304:0917/102025.578116:ERROR:network_service.cc(84)] Not implemented reached in std::unique_ptr<net::NetworkChangeNotifier> network::(anonymous namespace)::CreateNetworkChangeNotifierIfNeeded()
[124264:124264:0917/102025.612191:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[124264:124264:0917/102025.643791:WARNING:remote_commands_service.cc(40)] Client is not registered.
[124264:124264:0917/102025.643927:INFO:remote_commands_invalidator.cc(32)] Initialize RemoteCommandsInvalidator.
[124264:124264:0917/102025.643988:INFO:remote_commands_invalidator.cc(57)] Starting RemoteCommandsInvalidator.
[124264:124264:0917/102025.644029:INFO:remote_commands_invalidator.cc(123)] RemoteCommandsInvalidator ReloadPolicyData.
[124264:124264:0917/102025.644099:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[124264:124264:0917/102025.804677:ERROR:gpu_interface_provider.cc(85)] Not implemented reached in virtual void content::GpuInterfaceProvider::RegisterOzoneGpuInterfaces(service_manager::BinderRegistry *)
[124264:124264:0917/102025.884352:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[124264:124264:0917/102025.884424:WARNING:remote_commands_service.cc(40)] Client is not registered.
[124264:124264:0917/102025.904954:ERROR:demo_session.cc(388)] Offline resources not loaded - no highlights app available.
[124264:124277:0917/102025.905054:ERROR:demo_session.cc(93)] Offline resources not loaded - no media available.
[124264:124264:0917/102025.918241:ERROR:arc_robot_auth_code_fetcher.cc(87)] Fetching of robot auth code failed. DM Status: 5
../../chrome/browser/chromeos/arc/auth/arc_auth_service_browsertest.cc:407: Failure
Expected equality of these values:
  kFakeUserName
    Which is: "test@example.com"
  auth_instance().account_info()->account_name.value()
    Which is: ""
Stack trace:
#0 0x00000221b84c testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
#1 0x00000221b229 testing::internal::AssertHelper::operator=()
#2 0x000001a2f78f arc::ArcRobotAccountAuthServiceTest_GetDemoAccount_Test::RunTestOnMainThread()
#3 0x00000543ae52 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#4 0x000004f0de4c ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#5 0x000004f0cd1a ChromeBrowserMainParts::PreMainMessageLoopRun()
#6 0x000003c4fc58 chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#7 0x000002fe89e1 content::BrowserMainLoop::PreMainMessageLoopRun()
#8 0x000003493105 content::StartupTaskRunner::RunAllTasksNow()
#9 0x000002fe7127 content::BrowserMainLoop::CreateStartupTasks()
#10 0x000002feb263 content::BrowserMainRunnerImpl::Initialize()
#11 0x000002fe4c92 content::BrowserMain()
#12 0x000004ce769f content::ContentMainRunnerImpl::Run()
#13 0x000006f3fec5 service_manager::Main()
#14 0x000004ce5b34 content::ContentMain()
#15 0x00000543aa19 content::BrowserTestBase::SetUp()
#16 0x000004eaf2a5 InProcessBrowserTest::SetUp()
```