dtapuska: Mixed in there is a test failure for touch events, which appears to be a straightforward "leak" of is-initialized state between one test and the next, in the same shard.

+devlin,

Probably my previous change for UserScriptListener is a culprit? it was merged on 5days ago, and this issue is reported 5days ago.

@wez, could you share crash log for above test failure?

I got a below crash log with trybot today.

[ RUN      ] ExtensionMessageBubbleBridgeUnitTest.TestGetExtraViewInfoMethodWithPolicyInstalledSettingsOverrideExtension
[16097:16097:0306/085917.629868:20511629924:FATAL:child_process_launcher_helper_posix.cc(140)] Check failed: GetRequiredFilesByServiceMap().count(service_name) == 0. 
#0 0x0000040c2697 base::debug::StackTrace::StackTrace()
#1 0x0000040da4bb logging::LogMessage::~LogMessage()
#2 0x0000023d0951 content::internal::SetFilesToShareForServicePosix()
#3 0x0000023cfede content::internal::ChildProcessLauncherHelper::SetRegisteredFilesForService()
#4 0x0000023ce2ae content::ChildProcessLauncher::SetRegisteredFilesForService()
#5 0x00000268fa96 content::(anonymous namespace)::BuiltinManifestProvider::AddServiceManifest()
#6 0x00000268e6dd content::ServiceManagerContext::ServiceManagerContext()
#7 0x00000370c22c content::TestServiceManagerContext::TestServiceManagerContext()
#8 0x000003700d25 content::InProcessUtilityThreadHelper::InProcessUtilityThreadHelper()
#9 0x00000144c7cc extensions::ExtensionServiceTestBase::ExtensionServiceTestBase()
#10 0x00000145053d extensions::ExtensionServiceTestWithInstall::ExtensionServiceTestWithInstall()
#11 0x000000ebf8f6 testing::internal::TestFactoryImpl<>::CreateTest()
#12 0x000003e2d7f8 testing::TestInfo::Run()
#13 0x000003e2dbd7 testing::TestCase::Run()
#14 0x000003e34e27 testing::internal::UnitTestImpl::RunAllTests()
#15 0x000003e34aa7 testing::UnitTest::Run()
#16 0x000003684481 base::TestSuite::Run()
#17 0x000003685ffd base::(anonymous namespace)::LaunchUnitTestsInternal()
#18 0x000003685e74 base::LaunchUnitTests()
#19 0x00000367e1ba main
#20 0x7f86a5515f45 __libc_start_main
#21 0x00000064dc41 <unknown>

Can anyone check if this 2 sequential tests crash:
unit_tests --gtest_filter=DeclarativeContentActionTest.ShowPageAction:RequestContentScriptTest.MissingScripts
There should be state leak of g_connection_for_process.

Re #4: I can confirm that that particular gtest_filter gives a crash:

[11281:11281:0420/181735.782814:786677145905:FATAL:service_manager_connection_impl.cc(408)] Check failed: !g_connection_for_process.Get(). 
#0 0x7fb198d8fadb base::debug::StackTrace::StackTrace()
#1 0x7fb198d8e7dc base::debug::StackTrace::StackTrace()
#2 0x7fb198e01ef3 logging::LogMessage::~LogMessage()
#3 0x7fb1939a2e42 content::ServiceManagerConnection::SetForProcess()
#4 0x7fb194caabcc content::ServiceManagerContext::ServiceManagerContext()
#5 0x00000374982f content::TestServiceManagerContext::TestServiceManagerContext()
#6 0x000003728365 content::InProcessUtilityThreadHelper::InProcessUtilityThreadHelper()
#7 0x00000186b06d extensions::ExtensionServiceTestBase::ExtensionServiceTestBase()
#8 0x0000015d435f extensions::(anonymous namespace)::RequestContentScriptTest::RequestContentScriptTest()
...

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5ffddc43be38516f89c6c631872285324778eb39

commit 5ffddc43be38516f89c6c631872285324778eb39
Author: olegmax <olegmax@yandex-team.ru>
Date: Mon May 15 08:26:12 2017

Isolate tests that initialize ServiceManagerConnection

Some unit tests initialize ServiceManagerConnection and leave it initialized
(e.g. in RenderProcessHostImpl::InitializeChannelProxy). On the other hand,
tests that use TestServiceManagerContext/ServiceManagerContext expect
ServiceManagerConnection to be unitialized on test start or
DCHECK(!g_connection_for_process.Get()) fails.
Change to explicitly uninitialize ServiceManagerConnection on creation of
TestServiceManagerContext.

BUG= 717928 ,697217

Review-Url: https://codereview.chromium.org/2861503003
Cr-Commit-Position: refs/heads/master@{#471696}

[modify] https://crrev.com/5ffddc43be38516f89c6c631872285324778eb39/content/public/test/test_service_manager_context.cc

Still flakes some times on mac try job e.g.,

https://chromium-review.googlesource.com/c/chromium/src/+/836291

[ RUN      ] ThemeServiceTest.DisableUnusedTheme
[676:34843:1220/010054.935127:222084692384:ERROR:data_pack.cc(118)] Could not open pak file for writing: No such file or directory (2)
[676:34843:1220/010054.935198:222084757575:FATAL:theme_service.cc(97)] Check failed: false. Could not write theme pack to disk
0   unit_tests                          0x000000010a01ed5c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   unit_tests                          0x000000010a042eb0 logging::LogMessage::~LogMessage() + 224
2   unit_tests                          0x000000010a732b3f (anonymous namespace)::WritePackToDiskCallback(BrowserThemePack*, base::FilePath const&) + 159
3   unit_tests                          0x000000010a01f6d5 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 261
4   unit_tests                          0x000000010a0d2808 base::internal::TaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 840
5   unit_tests                          0x000000010a0d3628 base::internal::TaskTrackerPosix::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 168
6   unit_tests                          0x0000000109157f34 base::test::ScopedTaskEnvironment::TestTaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 164
7   unit_tests                          0x000000010a0d1978 base::internal::TaskTracker::RunNextTask(scoped_refptr<base::internal::Sequence>, base::internal::CanScheduleSequenceObserver*) + 472
8   unit_tests                          0x000000010a0c91c3 base::internal::SchedulerWorker::Thread::ThreadMain() + 691
9   unit_tests                          0x000000010a0dda2f base::(anonymous namespace)::ThreadFunc(void*) + 95
10  libsystem_pthread.dylib             0x00007fff89f9b899 _pthread_body + 138
11  libsystem_pthread.dylib             0x00007fff89f9b72a _pthread_struct_init + 0
12  libsystem_pthread.dylib             0x00007fff89f9ffc9 thread_start + 13
[ RUN      ] ThemeServiceTest.DisableUnusedTheme
[1308:29187:1220/010249.727724:336877289721:ERROR:data_pack.cc(118)] Could not open pak file for writing: No such file or directory (2)
[1308:29187:1220/010249.727816:336877376035:FATAL:theme_service.cc(97)] Check failed: false. Could not write theme pack to disk
0   unit_tests                          0x0000000109209d5c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   unit_tests                          0x000000010922deb0 logging::LogMessage::~LogMessage() + 224
2   unit_tests                          0x000000010991db3f (anonymous namespace)::WritePackToDiskCallback(BrowserThemePack*, base::FilePath const&) + 159
3   unit_tests                          0x000000010920a6d5 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 261
4   unit_tests                          0x00000001092bd808 base::internal::TaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 840
5   unit_tests                          0x00000001092be628 base::internal::TaskTrackerPosix::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 168
6   unit_tests                          0x0000000108342f34 base::test::ScopedTaskEnvironment::TestTaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 164
7   unit_tests                          0x00000001092bc978 base::internal::TaskTracker::RunNextTask(scoped_refptr<base::internal::Sequence>, base::internal::CanScheduleSequenceObserver*) + 472
8   unit_tests                          0x00000001092b41c3 base::internal::SchedulerWorker::Thread::ThreadMain() + 691
9   unit_tests                          0x00000001092c8a2f base::(anonymous namespace)::ThreadFunc(void*) + 95
10  libsystem_pthread.dylib             0x00007fff89f9b899 _pthread_body + 138
11  libsystem_pthread.dylib             0x00007fff89f9b72a _pthread_struct_init + 0
12  libsystem_pthread.dylib             0x00007fff89f9ffc9 thread_start + 13
[ RUN      ] ThemeServiceTest.DisableUnusedTheme
[1317:29187:1220/010253.160882:340310448019:ERROR:data_pack.cc(118)] Could not open pak file for writing: No such file or directory (2)
[1317:29187:1220/010253.160950:340310509693:FATAL:theme_service.cc(97)] Check failed: false. Could not write theme pack to disk
0   unit_tests                          0x000000010cc44d5c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   unit_tests                          0x000000010cc68eb0 logging::LogMessage::~LogMessage() + 224
2   unit_tests                          0x000000010d358b3f (anonymous namespace)::WritePackToDiskCallback(BrowserThemePack*, base::FilePath const&) + 159
3   unit_tests                          0x000000010cc456d5 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 261
4   unit_tests                          0x000000010ccf8808 base::internal::TaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 840
5   unit_tests                          0x000000010ccf9628 base::internal::TaskTrackerPosix::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 168
6   unit_tests                          0x000000010bd7df34 base::test::ScopedTaskEnvironment::TestTaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 164
7   unit_tests                          0x000000010ccf7978 base::internal::TaskTracker::RunNextTask(scoped_refptr<base::internal::Sequence>, base::internal::CanScheduleSequenceObserver*) + 472
8   unit_tests                          0x000000010ccef1c3 base::internal::SchedulerWorker::Thread::ThreadMain() + 691
9   unit_tests                          0x000000010cd03a2f base::(anonymous namespace)::ThreadFunc(void*) + 95
10  libsystem_pthread.dylib             0x00007fff89f9b899 _pthread_body + 138
11  libsystem_pthread.dylib             0x00007fff89f9b72a _pthread_struct_init + 0
12  libsystem_pthread.dylib             0x00007fff89f9ffc9 thread_start + 13
[ RUN      ] ThemeServiceTest.DisableUnusedTheme
[1319:29443:1220/010253.948878:341098444094:ERROR:data_pack.cc(118)] Could not open pak file for writing: No such file or directory (2)
[1319:29443:1220/010253.948944:341098503668:FATAL:theme_service.cc(97)] Check failed: false. Could not write theme pack to disk
0   unit_tests                          0x000000010c60ad5c base::debug::StackTrace::StackTrace(unsigned long) + 28
1   unit_tests                          0x000000010c62eeb0 logging::LogMessage::~LogMessage() + 224
2   unit_tests                          0x000000010cd1eb3f (anonymous namespace)::WritePackToDiskCallback(BrowserThemePack*, base::FilePath const&) + 159
3   unit_tests                          0x000000010c60b6d5 base::debug::TaskAnnotator::RunTask(char const*, base::PendingTask*) + 261
4   unit_tests                          0x000000010c6be808 base::internal::TaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 840
5   unit_tests                          0x000000010c6bf628 base::internal::TaskTrackerPosix::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 168
6   unit_tests                          0x000000010b743f34 base::test::ScopedTaskEnvironment::TestTaskTracker::RunOrSkipTask(base::internal::Task, base::internal::Sequence*, bool) + 164
7   unit_tests                          0x000000010c6bd978 base::internal::TaskTracker::RunNextTask(scoped_refptr<base::internal::Sequence>, base::internal::CanScheduleSequenceObserver*) + 472
8   unit_tests                          0x000000010c6b51c3 base::internal::SchedulerWorker::Thread::ThreadMain() + 691
9   unit_tests                          0x000000010c6c9a2f base::(anonymous namespace)::ThreadFunc(void*) + 95
10  libsystem_pthread.dylib             0x00007fff89f9b899 _pthread_body + 138
11  libsystem_pthread.dylib             0x00007fff89f9b72a _pthread_struct_init + 0
12  libsystem_pthread.dylib             0x00007fff89f9ffc9 thread_start + 13

An owner is needed for this bug so that somebody is on the hook for it. rdevlin.cronin, can you take it?